This is a list of open clusters in order of estimated distance from the Solar System

Solar System

The Solar System consists of the Sun and the astronomical objects gravitationally bound in orbit around it, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The vast majority of the system's mass is in the Sun...

. An open cluster

Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way Galaxy, and many more are thought to exist...

 is a gravitationally bound association of up to a few thousand star

Star

A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...

s that all formed from the same giant molecular cloud. There are over 1,000 known open clusters in the Milky Way

Milky Way

The Milky Way is the galaxy that contains the Solar System. This name derives from its appearance as a dim un-resolved "milky" glowing band arching across the night sky...

 galaxy, but the actual total may be up to ten times higher. The estimated half lives of clusters, after which half the original cluster members will have been lost, range from 150 million to 800 million years, depending on the original density.

Cluster identifier	Epoch Epoch (astronomy) In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as celestial coordinates, or elliptical orbital elements of a celestial body, where these are subject to perturbations and vary with time...  J2000		Constellation Constellation In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....	Distance (parsec Parsec The parsec is a unit of length used in astronomy. It is about 3.26 light-years, or just under 31 trillion kilometres .... s)	Age (Myr Year A year is the orbital period of the Earth moving around the Sun. For an observer on Earth, this corresponds to the period it takes the Sun to complete one course throughout the zodiac along the ecliptic.... )	Notes
	R. A. Right ascension Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.-Explanation:...	Dec. Declination In astronomy, declination is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. Declination in astronomy is comparable to geographic latitude, but projected onto the celestial sphere. Declination is measured in degrees north and...
Hyades Hyades (star cluster) The Hyades is the nearest open cluster to the Solar System and one of the best-studied of all star clusters. The Hipparcos satellite, the Hubble Space Telescope, and infrared color-magnitude diagram fitting have been used to establish a distance to the cluster's center of ~153 ly...			Taurus Taurus (constellation) Taurus is one of the constellations of the zodiac. Its name is a Latin word meaning 'bull', and its astrological symbol is a stylized bull's head:...	46	625
Coma Coma star cluster Not to be confused with the Coma cluster of galaxies.The Coma Star Cluster in Coma Berenices, designated Melotte 111 after its entry in the catalogue of deep sky objects by P. J. Melotte, is a small but nearby star cluster in our galaxy, containing about 40 brighter stars with a common proper motion...			Coma Berenices Coma Berenices Coma Berenices is a traditional asterism that has since been defined as one of the 88 modern constellations. It is located near Leo, to which it formerly belonged, and accommodates the North Galactic Pole...	90	400-500
Pleiades Pleiades (star cluster) In astronomy, the Pleiades, or Seven Sisters , is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky...			Taurus	135	100
IC 2602 IC 2602 IC 2602 is an open cluster in the constellation Carina. It was discovered by Abbe Lacaille in 1751 from South Africa. The cluster is at a distance of about 479 light-years away from Earth and can be seen with the naked eye...			Carina Carina (constellation) Carina is a constellation in the southern sky. Its name is Latin for the keel of a ship, and it was formerly part of the larger constellation of Argo Navis until that constellation was divided in three.-Stars:...	147	30
IC 2391 IC 2391 IC 2391 is an open cluster in the constellation Vela. It has been purported to be first described by the Persian astronomer Al Sufi in about 964. It was also found by Abbe Lacaille and has been cataloged as Lac II 5. The cluster is at a distance of about 500 light-years away from Earth and can be...			Vela Vela (constellation) Vela is a constellation in the southern sky. Its name is Latin for the sails of a ship, and it was originally part of a larger constellation, the ship Argo Navis, which was later divided into three parts, the others being Carina and Puppis.-Stars:...	148	30
Beehive Beehive Cluster The Beehive Cluster, also known as Praesepe , M44, NGC 2632, or Cr 189, is an open cluster in the constellation Cancer. It is one of the nearest open clusters to the Solar System, and it contains a larger star population than most other nearby clusters...			Cancer Cancer (constellation) Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is . Cancer is small and its stars are faint...	160	830
NGC 2451 A NGC 2451 NGC 2451 is what appears to be an open cluster in the Puppis constellation. It was discovered by Giovanni Batista Hodierna in 1654. In 1994, it was postulated that this was actually two open clusters that lie along the same line of sight. This was confirmed in 1996...			Puppis Puppis Puppis is a constellation in the southern sky. Its name is the Latin word for the poop deck of a ship, and Puppis represents the deck of the ship and its deckhouses...	189	50
Alpha Persei Alpha Persei Cluster The Alpha Persei Cluster, also known as Melotte 20 or Collinder 39, is an open cluster in the constellation of Perseus. To the naked eye, the cluster consists of several blue spectral type B type stars. The most luminous member is the ~2nd magnitude white-yellow supergiant Mirfak, also known as...			Perseus Perseus (constellation) Perseus is a constellation in the northern sky, named after the Greek hero Perseus. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations defined by the International Astronomical Union...	200	50
Blanco 1			Sculptor Sculptor (constellation) Sculptor is a small and faint constellation in the southern sky. It represents a sculptor. It was introduced by Nicolas Louis de Lacaille in the 18th century. He originally named it Apparatus Sculptoris , but the name was later shortened.-Notable features:No stars brighter than 3rd magnitude are...	253	100
Messier 7			Scorpius Scorpius Scorpius, sometimes known as Scorpio, is one of the constellations of the zodiac. Its name is Latin for scorpion, and its symbol is . It lies between Libra to the west and Sagittarius to the east...	280	224
Messier 39 Messier 39 Open Cluster M39 is an open cluster in the Cygnus constellation. It was discovered by Charles Messier in 1764. M39 is at a distance of about 800 light years away from Earth...			Cygnus Cygnus (constellation) Cygnus is a northern constellation lying on the plane of the Milky Way. Its name is the Latinized Hellenic word for swan. One of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross...	311	280
NGC 2232 NGC 2232 NGC 2232 is a bright open star cluster in the constellation Monoceros centred on the star 10 Monocerotis. It consists of about 20 stars....			Monoceros Monoceros Monoceros is a faint constellation on the celestial equator. Its name is Greek for unicorn. Its definition is attributed to the 17th-century Dutch cartographer Petrus Plancius. It is bordered by Orion to the west, Gemini to the north, Canis Major to the south and Hydra to the east...	325	53
IC 4756 IC 4756 IC 4756 is an open cluster in the Serpens constellation. It is at a distance of about 1300 light years away from Earth....			Serpens Serpens Serpens is a constellation of the northern hemisphere. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations defined by the International Astronomical Union....	330	500
NGC 2516 NGC 2516 NGC 2516 is an open cluster in the southern sky in the constellation Carina near Volans discovered by Abbe Lacaille in 1751-1752. From its catalog numbers it is called NGC 2516 or C 96; its popular name is The Diamond Cluster....			Carina	346	141
IC 4665 IC 4665 IC 4665 is an open cluster in the constellation Ophiuchus. It was discovered by Philippe Loys de Chéseaux in 1745. The cluster began to develop less than 40 million years ago, and lies about 1,400 light years away from Earth. It is easily visible in the smallest of telescopes and also with binoculars...			Ophiuchus Ophiuchus Ophiuchus is a large constellation located around the celestial equator. Its name is from the Greek "serpent-bearer", and it is commonly represented as a man grasping the snake that is represented by the constellation Serpens. Ophiuchus was one of the 48 constellations listed by the 2nd-century...	352	43
Trumpler 10 Trumpler 10 Trumpler 10 is an open cluster located in the constellation Vela. It was possibly discovered by Nicolas Louis de Lacaille in 1751-52, as the cluster's location data matches well with No. II.6 in his catalog. The cluster was also officially discovered by James Dunlop in 1826 and rediscovered...			Vela	365	35
IC 348 IC 348 IC 348 is a star forming region in the constellation Perseus located about 315 parsecs from the Sun. It consists of nebulosity and an associated 2 million year old cluster of roughly 400 stars within an angular diameter of 20″. The most massive stars in the cluster are the binary star...			Perseus	385	44
NGC 752 NGC 752 NGC 752 is an open cluster in the constellation Andromeda. The cluster was discovered by Caroline Herschel in 1783 and cataloged by her brother William Herschel in 1786, although an object that may have been NGC 752 was described by Giovanni Batista Hodierna before 1654.The large cluster lies...			Andromeda Andromeda (constellation) Andromeda is a constellation in the northern sky. It is named after Andromeda, the princess in the Greek legend of Perseus who was chained to a rock to be eaten by the sea monster Cetus...	400	1,700–2,000
NGC 3532 NGC 3532 NGC 3532, also known as the Wishing Well Cluster, is an open cluster in the constellation Carina. It got the name because through a telescope's eyepiece it appears like dozens of silver coins twinkling at the bottom of a wishing well....			Carina	405	316
NGC 2516 NGC 2516 NGC 2516 is an open cluster in the southern sky in the constellation Carina near Volans discovered by Abbe Lacaille in 1751-1752. From its catalog numbers it is called NGC 2516 or C 96; its popular name is The Diamond Cluster....			Carina	409	140
Collinder 140 Collinder 140 Collinder 140 is a nearby open cluster of stars in the constellation Canis Major. Based on the combined parallax measurements of nine cluster members, this cluster has an estimated parallax of , which is equivalent to a distance modulus of , or a distance of . The cluster has a density of 0.21...			Canis Major Canis Major Canis Major is one of the 88 modern constellations, and was included in the 2nd-century astronomer Ptolemy's 48 constellations. Its name is Latin for 'greater dog', and is commonly represented as one of the dogs following Orion the hunter...	410	35
NGC 2547 NGC 2547 NGC 2547 is a southern open cluster in Vela, discovered by Abbe Lacaille in 1751-1752 from South Africa....			Vela	433	38
NGC 6281 NGC 6281 NGC 6281 is an open cluster of stars in the constellation Scorpius. It was not included in the Messier or Caldwell catalogues of nebulous objects, but it is the brightest such cluster in the constellation to be left out of both. It is readily observed with binoculars or a small telescope; it is...			Scorpius	479	220
IC 4756 IC 4756 IC 4756 is an open cluster in the Serpens constellation. It is at a distance of about 1300 light years away from Earth....			Serpens	484	500
Butterfly Butterfly Cluster The Butterfly Cluster is an open cluster of stars in the constellation of Scorpius. Its name derives from the vague resemblance of its shape to a butterfly....			Scorpius	487	94
Messier 47 Messier 47 Open Cluster M47 is an open cluster in the constellation Puppis. It was discovered by Giovanni Batista Hodierna before 1654 and independently discovered by Charles Messier on February 19, 1771....			Puppis	490	73
Messier 34 Messier 34 Messier 34 is an open cluster in the constellation Perseus. It was probably discovered by Giovanni Batista Hodierna before 1654 and included by Charles Messier in his catalog of comet-like objects in 1764. Messier described it as, "A cluster of small stars a little below the parallel of γ...			Perseus	499	180
Messier 25 Messier 25 Open Cluster M25 is an open cluster in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745 and included in Charles Messier's list in 1764....			Sagittarius Sagittarius (constellation) Sagittarius is a constellation of the zodiac, the one containing the galactic center. Its name is Latin for the archer, and its symbol is , a stylized arrow. Sagittarius is commonly represented as a centaur drawing a bow...	620	92
Messier 23 Messier 23 Messier 23 is an open cluster in the constellation Sagittarius. It was discovered by Charles Messier on June 20, 1764....			Sagittarius	628	300
NGC 225 NGC 225 NGC 225 is an open cluster in the constellation Cassiopeia.-References:* http://seds.org/~spider/ngc/ngc.cgi?NGC+225* http://www.univie.ac.at/webda/cgi-bin/ocl_page.cgi?dirname=ngc0225-External links:*...			Cassiopeia Cassiopeia (constellation) Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopea was one of the 48 constellations listed by the 2nd century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today...	657	130
NGC 5662			Centaurus Centaurus Centaurus is a bright constellation in the southern sky. One of the largest constellations, Centaurus was included among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.-Stars:...	666	70
NGC 5460			Centaurus Centaurus Centaurus is a bright constellation in the southern sky. One of the largest constellations, Centaurus was included among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.-Stars:...	678	160
Messier 41 Messier 41 Messier 41 is an open cluster in the Canis Major constellation. It was discovered by Giovanni Batista Hodierna before 1654 and was perhaps known to Aristotle about 325 BC. M41 lies about four degrees almost exactly south of Sirius...			Canis Major	710	240
NGC 189 NGC 189 NGC 189 is an open cluster in the Cassiopeia constellation. It was discovered by Caroline Herschel on 27 September 1783. And independently rediscovered by John Herschel on 27 October 1829.-External links:* * at NightSkyInfo.com...			Cassiopeia	752	10
NGC 6025 NGC 6025 NGC 6025 is an open cluster located 2,700 light years away in the Triangulum Australe constellation. It was discovered by Abbe Lacaille in 1751 or 1752 during his South Africa tour.-External links:**-References:...			Triangulum Australe Triangulum Australe Triangulum Australe is a small constellation in the southern sky, created in the sixteenth century. Its name is Latin for 'the southern triangle', which distinguishes it from Triangulum in the northern sky...	756	130
Messier 48 Messier 48 Messier 48 is an open cluster in the Hydra constellation. It was discovered by Charles Messier in 1771.There is actually no cluster in the position indicated by Messier...			Hydra Hydra (constellation) Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake...	770	400
IC 5146 IC 5146 IC 5146 is a reflection/emission nebula and Caldwell object in the constellation Cygnus. IC 5146 refers specifically to the star cluster and Sh2-125 to the nebula. It shines at magnitude +10.0/+9.3/+7.2. Its celestial coordinates are RA , dec...			Cygnus	852	1
IC 4651 IC 4651 IC 4651 is an open cluster of stars located about 2,900 light years distant in the constellation Ara. It was first catalogued by John Louis Emil Dreyer in his 1895 version of the Index Catalogue. This is an intermediate age cluster that is billion years old...			Ara	888	1,900
NGC 6087 NGC 6087 NGC 6087 is one of the brightest open clusters in the constellation Norma with a magnitude of 5.4. It is approximately 3500 light-years away and contains about 40 stars of the seventh to the eleventh magnitude, the brightest being 6.5 magnitude S Normae....			Norma Norma (constellation) Norma is a small and inconspicuous constellation in the southern hemisphere between Scorpius and Centaurus. Its name is Latin for normal, referring to a right angle, and is variously considered to represent a rule, a carpenter's square, a set square or a level....	891	70
Messier 67 Messier 67 Messier 67 is an open cluster in the constellation of Cancer. M67's Trumpler class is variously given as II 2 r, II 2 m, or II 3 r. It was discovered by Johann Gottfried Koehler in 1779. Age estimates for the cluster range between 3.2 and 5 billion years, with the most recent estimate implying...			Cancer Cancer (constellation) Cancer is one of the twelve constellations of the zodiac. Its name is Latin for crab and it is commonly represented as such. Its symbol is . Cancer is small and its stars are faint...	908	4,000
NGC 3114			Carina	911	124
Messier 35 Messier 35 Messier 35 is an open cluster in the constellation Gemini. It was discovered by Philippe Loys de Chéseaux in 1745 and independently discovered by John Bevis before 1750...			Gemini Gemini (constellation) Gemini is one of the constellations of the zodiac. It was one of the 48 constellations described by the 2nd century astronomer Ptolemy and it remains one of the 88 modern constellations today. Its name is Latin for "twins", and it is associated with the twins Castor and Pollux in Greek mythology...	912	180
NGC 2509			Puppis	912	Uncertain
NGC 1502 NGC 1502 NGC 1502 is a small open cluster of approximately 45 stars in the constellation Camelopardalis, or the Giraffe. It is considered one of the finest objects in this constellation. Kemble's Cascade seems to "flow" into NGC 1502....			Camelopardalis Camelopardalis Camelopardalis is a large but faint constellation in the northern sky. The constellation was introduced in 1612 by Petrus Plancius. Some older astronomy books give an alternative spelling of the name, Camelopardus.-Etymology:...	1,000	10
NGC 7822 NGC 7822 NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant, with the younger components aged no more than a...			Cepheus Cepheus (constellation) Cepheus is a constellation in the northern sky. It is named after Cepheus, King of Aethiopia in Greek mythology. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations.-Stars:...	1,000	2
Messier 50 Messier 50 Messier 50 is an open cluster in the constellation Monoceros. It was perhaps discovered by G. D. Cassini before 1711 and independently discovered by Charles Messier in 1772. M50 is at a distance of about 3,000 light-years away from Earth. It is described as a 'heart-shaped' figure.-External...			Monoceros	1,000	130
Messier 93 Messier 93 Messier 93 is an open cluster in the constellation Puppis. It was discovered by Charles Messier in 1781....			Puppis	1037	390
NGC 2169 NGC 2169 NGC 2169, is an open cluster in the Orion constellation. It was discovered by Giovanni Batista Hodierna before 1654 and discovered by William Herschel on October 15, 1784. NGC 2169 is at a distance of about 3,600 light years away from Earth. It is nicknamed "The '37' Cluster" due to its striking...			Orion Orion (constellation) Orion, often referred to as The Hunter, is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous, and most recognizable constellations in the night sky...	1,052	12
NGC 6242 NGC 6242 NGC 6242 is an open cluster in the constellation Scorpius....			Scorpius	1,131	50
NGC 381 NGC 381 NGC 381 is an open cluster in the Cassiopeia constellation. It was discovered by Caroline Herschel in 1783....			Cassiopeia	1,148	320
NGC 6204 NGC 6204 NGC 6204 is an open cluster in the constellation Ara, lying close to the galactic equator.-References:* * *...			Ara Ara (constellation) Ara is a southern constellation situated between Scorpius and Triangulum Australe. Its name is Latin for "altar". Ara was one of the 48 Greek constellations described by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations defined by the International Astronomical...	1,200	79
Messier 21 Messier 21 Messier 21 or M21 is an open cluster of stars in the constellation of Sagittarius. It was discovered and catalogued by Charles Messier on June 5, 1764....			Sagittarius	1,205	12
NGC 6231 NGC 6231 NGC 6231 is an open cluster located near Zeta Scorpii. Zeta1 is a member of this star cluster....			Scorpius	1,243	6
Messier 18 Messier 18 Messier 18 or M18 is an open cluster of stars in the constellation Sagittarius. It was discovered by Charles Messier in 1764 and included in his list of comet-like objects. From the perspective of Earth, M18 is situated between the Omega Nebula and the Sagittarius Star Cloud . Its age is...			Sagittarius	1,296	17
NGC 2439 NGC 2439 NGC 2439 is an open cluster of stars in the constellation Puppis. It has an apparent magnitude of 6.9, an angular size of 10 arcseconds and is visible using a small telescope. This cluster is about 3.855 kpc from the Solar System and has an age of about 10 million years. Observationally,...			Puppis	1,300	25
Messier 36 Messier 36 Open Cluster M36 is an open cluster in the Auriga constellation. It was discovered by Giovanni Batista Hodierna before 1654. M36 is at a distance of about 4,100 light years away from Earth and is about 14 light years across. There are at least sixty members in the cluster...			Auriga Auriga (constellation) Auriga is a constellation in the northern sky. Its name is Latin for 'charioteer' and its stars form a shape that has been associated with the pointed helmet of a charioteer. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains among the 88 modern...	1,330	25
Messier 37 Messier 37 Messier 37 is the richest open cluster in the constellation Auriga. It was discovered by Hodierna before 1654....			Auriga	1,400	347
Messier 38 Messier 38 Messier 38 is an open cluster in the Auriga constellation.It was discovered by Giovanni Batista Hodierna before 1654 and independently found by Le Gentil in 1749...			Auriga	1,400	316
Messier 52 Messier 52 Messier 52 is an open cluster in the Cassiopeia constellation. It was discovered by Charles Messier in 1774. M52 can be seen from Earth with binoculars....			Cassiopeia	1,400	160
NGC 6067 NGC 6067 NGC 6067 is an open cluster of stars in the constellation Norma. It is located to the north of Kappa Normae, with an angular diameter of 12′. The cluster can be observed with binoculars or a small telescope, while a 12-inch aperture telescope will reveal about 250 stars....			Norma	1,417	170
NGC 2362 NGC 2362 NGC 2362 is an open cluster in the constellation Canis Major. It was discovered by Giovanni Batista Hodierna before 1654. Its brightest star is Tau Canis Majoris, and therefore it is sometimes called the Tau Canis Majoris Cluster. NGC 2362 has a distance of 1.48 kpc and is a relatively young 4–5...			Canis Major	1,480	4–5
NGC 6756 NGC 6756 NGC 6756 is an Open Cluster.-References:* * * *...			Aquila Aquila (constellation) Aquila is a stellar constellation. Its name is Latin for 'eagle' and it is commonly represented as such. In mythology, Aquila was owned by the Roman god Jupiter and performed many tasks for him....	1,507	62
NGC 6031			Norma	1,510	117
Messier 46 Messier 46 Messier 46 is an open cluster in the constellation of Puppis. It was discovered by Charles Messier in 1771...			Puppis	1,510	250
Messier 26 Messier 26 Open Cluster M26 is an open cluster in the constellation Scutum. It was discovered by Charles Messier in 1764....			Scutum Scutum Scutum is a small constellation introduced in the seventeenth century. Its name is Latin for shield.-History:Scutum is the only constellation that owes its name to a non-classical historical figure...	1,600	85
NGC 2175 NGC 2175 Open Cluster NGC 2175 is an open cluster in the Orion constellation. It was discovered by Giovanni Batista Hodierna before 1654 and independently discovered by Karl Christian Bruhns in 1857. NGC 2175 is at a distance of about 6,350 light years away from Earth.The nebula surrounding it is...			Orion	1,627	8.9
NGC 188 NGC 188 NGC 188 is an open cluster in the constellation Cepheus. It was discovered by John Herschel in 1825.Unlike most open clusters that drift apart after a few million years because of the gravitational interaction of our galaxy, NGC 188 lies far above the plane of the galaxy and is one of the most...			Cepheus	1,660	6,600
NGC 2244 NGC 2244 NGC 2244 is an open cluster in the Rosette Nebula, which is located in the constellation Monoceros. This cluster has several O-type stars, super hot stars that generate large amounts of radiation and stellar wind....			Monoceros	1,660	1.9
Eagle Nebula Eagle Nebula The Eagle Nebula is a young open cluster of stars in the constellation Serpens, discovered by Jean-Philippe de Cheseaux in 1745-46. Its name derives from its shape which is resemblant of an eagle...			Serpens	1,800	1.3
NGC 2360 NGC 2360 NGC 2360 is an open cluster in the constellation Canis Major. It was discovered by Caroline Herschel in 1783....			Canis Major	1,887	1,000
Wild Duck Wild Duck Cluster The Wild Duck Cluster is an open cluster in the constellation Scutum. It was discovered by Gottfried Kirch in 1681. Charles Messier included it in his catalogue in 1764....			Scutum	1,900	250
NGC 6834 NGC 6834 NGC 6834 is an open cluster of stars located about 7,000 light years from the Sun in the constellation Vulpecula. It has a visual magnitude of 7.8 and an estimated age of 65 million years....			Cygnus	1,930	76
NGC 659 NGC 659 NGC 659 is an open cluster in the Cassiopeia constellation. It was discovered by Caroline Herschel in 1783....			Cassiopeia	1,938	35
Jewel Box			Crux Crux Crux is the smallest of the 88 modern constellations, but is one of the most distinctive. Its name is Latin for cross, and it is dominated by a cross-shaped asterism that is commonly known as the Southern Cross.-Visibility:...	1,976	14
NGC 6200 NGC 6200 NGC 6200 is Open cluster in the constellation Ara, lying close to the galactic equator.-References:* * *...			Ara	2,056	8.5
NGC 869 NGC 869 NGC 869 is an open cluster located 7600 light years away in the constellation of Perseus. The cluster is most likely around 13 million years old. It is the westernmost of the Double Cluster with NGC 884. Located in the Perseus OB1 association both clusters are located physically close to one...			Perseus	2,079	12
NGC 637 NGC 637 NGC 637 is an open cluster of stars in theconstellation Cassiopeia. It has a Trumpler classification of I2m and an angular diameter of 4.2′. At a distance of approximately 7,045 light years, this corresponds to a diameter of . The estimated age of this cluster is 5–15 million years....			Cassiopeia	2,160	10
NGC 2355 NGC 2355 NGC 2355 is an old open cluster in the constellation Gemini.It is approximately a billion years old and is located about 5,400 light years from the Solar System and 1,100 ly above the plane of the Milky Way galaxy. At that distance, the angular size of the cluster halo corresponds to a radius of...			Gemini	2,200	955
NGC 2129 NGC 2129 NGC 2129 is an open cluster in the constellation Gemini. It has an angular distance of 2.5 arcminutes and is approximately 2.2 ± 0.2 kpc from the Sun inside the Local spiral arm. At that distance, the angular size of the cluster corresponds to a diameter of about 10.4 light years...			Gemini	2,200	10
NGC 663 NGC 663 NGC 663, also known as Caldwell 10, is young open cluster of about 400 stars in the Cassiopeia constellation. It has an estimated 400 stars and spans about a quarter of a degree across the sky. It can reportedly be detected with the unaided eye, although a telescope is recommended for best viewing....			Cassiopeia	2,420	25
NGC 457 NGC 457 NGC 457 is an open star cluster in the constellation Cassiopeia. It was discovered by Friedrich Wilhelm Herschel in 1787. and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years...			Cassiopeia	2,429	21
NGC 2204 NGC 2204 NGC 2204 is an open cluster in the Canis Major constellation. It was probably discovered by Caroline Herschel or by William Herschel in 1783.-External links:*...			Canis Major	2,629	787
NGC 884 NGC 884 NGC 884 is an open cluster located 7600 light years away in the constellation of Perseus. The cluster is most likely around 12.5 million years old. It is the easternmost of the Double Cluster with NGC 869. Located in the Perseus OB1 association both clusters are located physically close to one...			Perseus	2,940	14
Messier 103 Messier 103 Messier 103 is an open cluster where a few thousand stars formed in the constellation Cassiopeia. This open cluster was discovered in 1781 by Charles Messier’s friend and collaborator Pierre Méchain. It is one of the most distant open clusters, with distances of 8,000 to 9,500 light years from the...			Cassiopeia	3,000	16
NGC 1931 NGC 1931 NGC 1931, found in the constellation Auriga has been referred to as a "miniature version of the Orion Nebula", as it shares some of the same characteristics. It is a mixed emission-reflection nebula, and contains a smaller version of the Trapezium in its hot young star cluster centered in the...			Auriga	3,086	10
NGC 2158 NGC 2158 NGC 2158 is an open cluster in the constellation of Gemini. It is located southwest of open cluster Messier 35, and is believed to be just over 1 billion years old.-External links:*...			Gemini	5,071	1,054
NGC 6791 NGC 6791 NGC 6791 is an open star cluster in the Lyra constellation. It was discovered by Friedrich August Theodor Winnecke in 1853. At roughly 8 billion years old, and with an Iron to Hydrogen abundance ratio that is more than twice that of the Sun, it is one of the oldest and most metal-rich clusters in...			Lyra Lyra Lyra is a small constellation. It is one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations recognized by the International Astronomical Union. Its principal star, Vega — a corner of the Summer Triangle — is one of the brightest...	5,853	8,900
Arp-Madore 2			Puppis	8,870	5,000
Hodge 301 Hodge 301 Hodge 301 is a star cluster in the Tarantula Nebula, visible from Earth's Southern Hemisphere. The cluster and nebula lie about 168,000 light years away, in one of our Milky Way Galaxy's orbiting satellite galaxies, the Large Magellanic Cloud....			Dorado Dorado Dorado is a constellation in the southern sky. It was created in the late 16th century and is now one of the 88 modern constellations. Its name refers to the dolphinfish , which is known as dorado in Spanish, although it has also been depicted as a swordfish...	51,400	25