List of stars in Gemini - AbsoluteAstronomy.com

This is the list of notable 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 in the 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....

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...

, sorted by decreasing brightness.

Name	B Bayer designation A Bayer designation is a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellation's Latin name...	F Flamsteed designation Flamsteed designations for stars are similar to Bayer designations, except that they use numbers instead of Greek letters. Each star is assigned a number and the Latin genitive of the constellation it lies in...	HD Henry Draper Catalogue The Henry Draper Catalogue is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension , published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the...	HIP	vis. mag. Apparent magnitude The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...	abs. mag. Absolute magnitude Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...	Dist. (ly)	Sp. class Stellar classification In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...	Notes
Pollux Pollux (star) Pollux is an orange giant star approximately 34 light-years from the Earth in the constellation of Gemini . Pollux is the brightest star in the constellation, brighter than Castor...	β	78	62509	37826	1.16	1.09	34	K0IIIvar	Al-Ras al-Taum al-Mu'ahar, Muekher al Dzira, Posterior Brachii; has a planet Extrasolar planet An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars... (b Pollux b Pollux b, also known as Beta Geminorum b and HD 62509 b, is an extrasolar planet approximately 34 light-years away in the constellation of Gemini . This planet was discovered orbiting the star Pollux in 2006. The planet has a comparable mass to the gas giants in our solar system... )
Castor A Castor (star) Castor is the second brightest star in the constellation Gemini and one of the brightest stars in the night sky. Although it has the Bayer designation "alpha", it is actually fainter than Beta Geminorum...	α	66	60179	36850	1.58	0.59	52	A2Vm	Al-Ras al-Taum al-Muqadim, Aoul al Dzira, Prima Brachii
γ Gem Gamma Geminorum Gamma Geminorum is the second brightest star in the constellation Gemini. It has the traditional names Alhena and Almeisan....	γ	24	47105	31681	1.93	−0.60	105	A0IV	Alhena, Almeisan, Nir al Henat, Prima του al Henat
μ Gem Mu Geminorum Mu Geminorum is a star in the constellation Gemini, approximately 230 light years away from Earth. It has the traditional name Tejat Posterior, which means back foot, because it is the foot of Castor, one of the Gemini twins...	μ	13	44478	30343	2.87	−1.39	232	M3IIIvar	Tejat Posterior, Nuhatai, Calx, Pish Pai
Castor B Castor (star) Castor is the second brightest star in the constellation Gemini and one of the brightest stars in the night sky. Although it has the Bayer designation "alpha", it is actually fainter than Beta Geminorum...	α	66	60178		2.88
ε Gem Epsilon Geminorum Epsilon Geminorum is a star in the constellation of Gemini. It has the traditional name Mebsuta ....	ε	27	48329	32246	3.06	−4.15	903	A3mA6-A9	Mebsuta
η Gem Eta Geminorum Eta Geminorum is a triple star system in the constellation Gemini. It has the traditional names Tejat Prior, Propus and Praepes and Pish Pai ....	η	7	42995	29655	3.31	−1.84	349	M3III	Propus, Praepes, Tejat Prior
ξ Gem Xi Geminorum Xi Geminorum is a star in the constellation Gemini. It has the traditional name Alzirr, meaning "the button" in Arabic.This star, along with γ Gem , μ Gem , ν Gem and η Gem were Al Han'ah, "the brand"...	ξ	31	48737	32362	3.35	2.13	57	F5IV	Alzir
δ Gem Delta Geminorum Delta Geminorum is a star in the constellation Gemini. It has the traditional name Wasat. The traditional name comes from the Arabic word for "middle"....	δ	55	56986	35550	3.50	2.22	59	F0IV...	Wasat
κ Gem Kappa Geminorum Kappa Geminorum is a Class G8, fourth-magnitude star in the constellation Gemini. Kappa Geminorum is a multiple star system located about 140 light-years from Earth....	κ	77	62345	37740	3.57	0.35	143	G8III	Jīxīn (積薪)
λ Gem Lambda Geminorum Lambda Geminorum is a Class A3, fourth-magnitude star in the constellation Gemini. Lambda Geminorum is a variable star located about 95 light-years from Earth....	λ	54	56537	35350	3.58	1.27	94	A3V...
θ Gem Theta Geminorum Theta Geminorum is a Class A3, fourth-magnitude star in the constellation Gemini. Theta Geminorum is a binary star with components of magnitudes 3.60 and 5.18, separated by 2.9 arcseconds. This stellar system is located about 200 light-years from Earth....	θ	34	50019	33018	3.60	−0.30	197	A3III
ι Gem Iota Geminorum Iota Geminorum is a Class G9, fourth-magnitude star in the constellation Gemini. It is called by the proper name Propus, meaning "forefoot" in Latin....	ι	60	58207	36046	3.78	0.85	126	G9III+...	Propus
ζ Gem Zeta Geminorum Zeta Geminorum is a star in the constellation Gemini. It has the traditional name Mekbuda.The name Mekbuda has roots in ancient Arabic where it and the star Mebsuta were the paws of a lion...	ζ	43	52973	34088	4.01	−3.76	1168	G3Ibv SB	Mekbuda; δ Cep variable
υ Gem	υ	69	60522	36962	4.06	−0.28	240	K5III
ν Gem A	ν	18	45542	30883	4.13	−1.81	502	B6III
1 Gem		1	41116	28734	4.16	0.84	151	G7III	Propus
ρ Gem	ρ	62	58946	36366	4.16	2.82	60	F0V...
σ Gem	σ	75	62044	37629	4.23	1.36	122	K1III SB	RS CVn variable RS Canum Venaticorum variable RS Canum Venaticorum variables are a type of variable star. They are close binary stars having active chromospheres which can cause large stellar spots. These spots are believed to cause variations in their observed luminosity...
τ Gem Tau Geminorum Tau Geminorum is a star in the Gemini constellation. It is an orange giant of the spectral type K2III, meaning it is probably fusing carbon and oxygen in its core to form iron and nickel. It has the apparent magnitude of 4.40, visible to the naked eye with moderate difficulty. The absolute...	τ	46	54719	34693	4.41	−0.42	302	K2III	has a brown dwarf Brown dwarf Brown dwarfs are sub-stellar objects which are too low in mass to sustain hydrogen-1 fusion reactions in their cores, which is characteristic of stars on the main sequence. Brown dwarfs have fully convective surfaces and interiors, with no chemical differentiation by depth...
30 Gem		30	48433	32249	4.49	−0.15	276	K1III
38 Gem	e	38	50635	33202	4.73	2.50	91	F0Vp
ο Gem	ο	71	61110	37265	4.89	1.46	158	F3III
81 Gem	g	81	62721	37908	4.89	−0.21	341	K5III
χ Gem	χ		66216	39424	4.94	0.45	258	K2III
φ Gem	φ	83	64145	38538	4.97	0.51	254	A3V
65 Gem	b	65	59148	36429	5.01	−0.34	383	K2III
57 Gem	A	57	57727	35846	5.04	1.67	154	G8III
74 Gem	f	74	61338	37300	5.04	−1.02	532	M0III
51 Gem		51	55383	34909	5.07	−1.59	700	K3V
64 Gem		64	59037	36393	5.07	1.58	163	A4V
56 Gem		56	57423	35699	5.09	−0.50	428	M0III
			52960	34033	5.14	−1.65	743	K3III
π Gem	π	80	62898	38016	5.14	−1.04	562	M0III
26 Gem		26	48097	32104	5.20	2.05	139	A2V
ω Gem	ω	42	52497	33927	5.20	−3.33	1655	G5II	Cepheid variable Cepheid variable A Cepheid is a member of a class of very luminous variable stars. The strong direct relationship between a Cepheid variable's luminosity and pulsation period, secures for Cepheids their status as important standard candles for establishing the Galactic and extragalactic distance scales.Cepheid...
63 Gem		63	58728	36238	5.20	2.54	111	F5IV-V...
68 Gem		68	60107	36760	5.27	−0.03	375	A1Vn
36 Gem	d	36	49908	32921	5.28	−0.77	529	A2V
76 Gem	c	76	62285	37704	5.30	−1.01	595	K5III
			60318	36896	5.34	0.50	302	K0III
85 Gem		85	64648	38722	5.38	0.29	339	A0Vs
28 Gem		28	48450	32311	5.42	−0.79	570	K4III
HD 59686 HD 59686 HD 59686 is a 5th magnitude star approximately 316 light years away in the constellation Gemini.- Star :It is an orange giant meaning it has ceased fusing hydrogen in its core and on its way to becoming a red giant...			59686	36616	5.45	0.62	302	K2III	has a planet (b HD 59686 b HD 59686 b is an extrasolar planet that orbits at 91.1% of distance between Earth and the Sun or 0.911 AU in a very circular orbit of the giant star HD 59686.... )
45 Gem		45	54131	34440	5.47	0.61	305	G8III
			53329	34267	5.55	0.69	305	G8IV
NZ Gem			61913	37521	5.55	−1.93	1022	M3Sv
			46374	31277	5.57	1.10	256	K2III:
70 Gem		70	60986	37204	5.58	0.72	306	K0III
35 Gem		35	49738	32814	5.68	−2.64	1502	K3III
			49968	32968	5.68	−0.30	513	K5III
			49380	32740	5.72	0.85	307	K3II
41 Gem		41	52005	33715	5.73	−5.53	5821	K3Ib
37 Gem		37	50692	33277	5.74	4.55	56	G0V
3 Gem		3	42087	29225	5.75			B2.5Ib	PU Gem; α Cyg variable Alpha Cygni variable Alpha Cygni variables are variable stars which exhibit non-radial pulsations, meaning that some portions of the stellar surface are contracting at the same time others parts expand. They are supergiant stars of spectral types B or A...
47 Gem		47	54801	34722	5.75	0.36	390	A4IV
53 Gem		53	55870	35152	5.75	−1.85	1079	M1III
59 Gem		59	57927	35941	5.77	1.73	209	F0:III:
			52556	33914	5.78	−0.70	644	K1III:
			61885	37508	5.79	−1.12	786	M2III
5 Gem		5	42398	29379	5.83	−0.99	753	K0III
52 Gem		52	55621	35025	5.84	0.77	337	M1IIIvar
48 Gem		48	55052	34819	5.85	0.70	349	F5IV
			52609	33937	5.86	−2.99	1918	M2III
33 Gem		33	49606	32753	5.87	−1.40	926	B7III	OV Gem; SX Ari variable SX Arietis variable SX Arietis variables are a class of variable stars. They are high-temperature analogues of Alpha2 Canum Venaticorum variables and exhibit strong magnetic fields and intense He I and Si III spectral lines. They have brightness fluctuations of approximately 0.1 magnitudes with periods of...
			51000	33421	5.91	0.55	385	G5III
			42049	29196	5.93	−5.45	6151	K4III
			52711	34017	5.93	4.53	62	G4V
			61603	37428	5.93	−2.42	1523	K5
			53686	34358	5.94	−0.66	681	K4III
61 Gem		61	58579	36156	5.94	0.47	405	F2Vn
NP Gem			52554	33929	5.96	−2.13	1353	M1.5
			47575	31876	5.99	1.25	289	A2V
44 Gem		44	53257	34182	6.00	0.17	478	B8Vn
			52976	34055	6.01	−1.93	1264	K5
			63889	38394	6.03	0.50	415	K1III:
			40589	28500	6.04	−4.73	4657	B9Iab
			44927	30570	6.05	−0.19	578	A2Vn
			61859	37580	6.05	2.36	178	F7V
			63589	38319	6.06	2.04	208	A2m
			63352	38147	6.07	−0.46	660	K0
8 Gem		8	43261	29789	6.09	0.46	436	G8III
			47358	31813	6.09	0.54	419	G9III
			61295	37339	6.16	1.53	275	F6II
58 Gem		58	57744	35842	6.17	1.27	312	A1V
			45951	31067	6.18			K2III...
			61219	37269	6.18	0.56	435	A2V
82 Gem		82	63208	38106	6.18	−1.36	1052	G2III+...
			56386	35345	6.19	−0.18	612	A0Vn
39 Gem		39	51530	33595	6.20	2.82	155	F8Vbwvar
16 Gem		16	45394	30769	6.22	0.13	538	A2Vs
			59059	36340	6.23	−0.63	769	B9IV
			61630	37404	6.23	−1.28	1035	K0
9 Gem		9	43384	29840	6.24	−2.79	2090	B3Ia	PX Gem; α Cyg variable
			45506	30815	6.24	2.19	210	G5
			62141	37636	6.25	1.38	307	K0III
20 Gem		20	46136	31158	6.26	1.08	354	F6V...
			51330	33465	6.26	−5.25	6520	F2Ib-II	HR 2597
			47863	32020	6.28	−0.63	786	A1V
			53899	34428	6.31	−0.75	840	K1
			44234	30218	6.32	0.78	417	G9:III:
			44780	30501	6.35	−0.68	832	K2III
			49059	32539	6.35	0.74	431	A2V
141 Tau		141	40724	28561	6.36	0.09	584	B8V
			58898	36325	6.36	1.39	321	K2III
			61035	37165	6.37	3.01	153	F0
19 Gem		19	46031	31105	6.38	1.33	334	A8V
			56176	35253	6.38	1.59	296	G7IV
40 Gem		40	51688	33650	6.40	−1.43	1199	B8III
			47415	31850	6.43	3.70	115	F8IV
			54563	34608	6.43	3.11	150	G9V
			47020	31650	6.44	0.33	543	A3V
25 Gem		25	47731	32019	6.45	−1.73	1411	G5Ib
			57049	35548	6.45	−1.18	1094	A2Vn
50 Gem		50	55130	34860	6.46	3.24	144	F8V	spectroscopic binary
32 Gem		32	48843	32404	6.47	−1.25	1140	A9III
			53744	34367	6.47	0.34	549	B9V
OT Gem			58050	35933	6.47	−4.40	4866	B2Ve	γ Cas variable; Be star Be star A Be star is a B-type star with prominent emission lines of hydrogen in its spectrum. The designation is combined by the spectral class, B, and the lowercase e denoting emission in the spectral classification system. Line emission from other atomic ions might be present as well, but is typically...
			54986	34763	6.50	−1.14	1098	K5
6 Gem		6	42543	29450	6.51	−4.09	4289	M1Ia-ab	BU Gem
79 Gem		79	62510	37811	6.53	0.78	460	A1V
15 Gem A		15	45352	30757	6.54	0.31	575	K0
10 Gem		10	43740	30003	6.58	−0.34	789	G5
2 Gem		2	41543	28969	6.67	−0.45	867	K0
23 Gem		23	46781	31525	6.73	2.25	257	F5
HD 50554 HD 50554 HD 50554 is a star approximately away in the constellation Gemini.- Star :HD 50554 is a yellow-white main-sequence star [F8V] that currently fuse hydrogen in its core. Since the star is 7th magnitude, it is not visible to the unaided eye, but with binoculars or a telescope, it should be easy to...			50554	33212	6.86	4.40	101	F8V	has a planet (b HD 50554 b HD 50554 b is a Jupiter-sized extrasolar planet with minimum mass 4.4 times that of Jupiter. The planet was discovered in 2002 by Debra Fischer and three team members, who used doppler spectroscopy to measure the wobbling of the star caused by gravitational interaction with the planet.... )
4 Gem		4	42216	29288	6.88	−0.21	853	B9
11 Gem		11	43818	30046	6.91	−2.28	2248	B0II
12 Gem		12	43836	30049	6.95	−5.15	8579	A0II
49 Gem		49	55156	34861	7.05	−0.01	842	A0
R Gem			53791	34356	7.68	1.65	525	S...
ν Gem B	ν	18	257937		8.00
15 Gem B		15	257498	30756	8.59	7.31	59	G0
BD+20°1790 BD+20°1790 BD+20°1790 is a young late orange dwarf star in the constellation Gemini, located nearly 85 light years away from Sun. The star is young and very active and is a member of the AB Doradus Moving Group. The star has also been studied and monitored by SuperWASP group and found to coincide with the...					9.93	7.86	85	K5Ve	text-align:left; > has a disproven planet
HAT-P-20					11.34		228	K7	text-align:left; > has a transiting planet (b)
HAT-P-24 HAT-P-24 HAT-P-24 is an F8 dwarf star about 405 pc away. However, some sources indicate that the star is about 306 ±20 pc away. It has a planet HAT-P-24b, which is a hot Jupiter...					11.82		998	F8	text-align:left; > has a transiting planet (b HAT-P-24b HAT-P-24b is an extrasolar planet. It is a hot Jupiter, with a mass of 0.681 MJ and a radius of 1.243 RJ. It was discovered in the HATNet Project in 2010.- References :* http://www.astro.keele.ac.uk/jkt/tepcat/planets/HAT-P-24.html... )
HAT-P-33					11.89		1367	F	text-align:left; > has a transiting planet (b HAT-P-33b HAT-P-33b is a planet in the orbit of HAT-P-33, which lies 1,367 light years away from Earth. Its discovery was reported in June 2011, although it was suspected to be a planet as early as 2004... )

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