List of stars in Triangulum
Encyclopedia
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....

 Triangulum
Triangulum
Triangulum is a small constellation in the northern sky. Its name is Latin for triangle, and it should not be confused with Triangulum Australe in the southern sky. Its name derives from its three brightest stars, of third and fourth magnitude, which form a nearly isosceles long and narrow triangle...

, 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 RA
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...

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
β Tri
Beta Trianguli
Beta Trianguli is the brightest star in the constellation Triangulum.In Chinese traditional astronomy, it was the 9th star of Tien Ta Tseang ....

 
β 4 13161 10064 3.00 0.09 124 A5III Deltotum, Deltoton
α Tri
Alpha Trianguli
Alpha Trianguli is a binary star in the constellation Triangulum. It has the traditional names Mothallah or Ras al Muthallah , and Caput Trianguli, from the Arabic رأس المثلث ra’s al-muθallaθ "the head of the triangle" and its Latin translation.Alpha Trianguli...

 
α 2 11443 8796 3.42 1.95 64 F6IV Mothallah, Metallah, Ras al Mothallah, Elmuthalleth, Caput Trianguli
γ Tri
Gamma Trianguli
Gamma Trianguli is a star in the constellation Triangulum.Gamma Trianguli is a white A-type main sequence dwarf with an apparent magnitude of +4.03. It is approximately 118 light years from Earth....

 
γ 9 14055 10670 4.03 1.24 118 A1Vnn
δ Tri
Delta Trianguli
Delta Trianguli is a spectroscopic binary star system approximately away in the constellation of Triangulum. The primary star is a yellow dwarf, while the secondary star is thought to be an orange dwarf...

 
δ 8 13974 10644 4.84 4.66 35 G0V
6 Tri  ι 6 13480 10280 4.94 0.08 305 F5V comp SB TZ Tri; 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...

14 Tri  14 15656 11784 5.15 −0.25 391 K5III
7 Tri  7 13869 10559 5.25 0.48 293 A0V
10 Tri  10 14252 10793 5.29 0.13 350 A2V
12 Tri  12 15257 11486 5.29 1.90 155 F0III
R Tri  16210 12193 5.30 1299 M4IIIe Mira variable
Mira variable
Mira variables , named after the star Mira, are a class of pulsating variable stars characterized by very red colors, pulsation periods longer than 100 days, and light amplitudes greater than one magnitude in infrared and 2.5 magnitude in visual...

15 Tri  15 16058 12086 5.38 M3III
ε Tri
Epsilon Trianguli
Epsilon Trianguli is a binary star in the constellation Triangulum. It is approximately 370 light years from Earth....

 
ε 3 12471 9570 5.50 0.22 370 A2V binary star
Binary star
A binary star is a star system consisting of two stars orbiting around their common center of mass. The brighter star is called the primary and the other is its companion star, comes, or secondary...

11 Tri  11 15176 11432 5.55 0.83 286 K1III:
10390 7943 5.63 1.13 259 B9IV-V
11007 8433 5.78 3.60 89 F8V
11928 9132 5.84 0.02 476 M2III
15755 11840 5.84 1.33 260 K0III
13 Tri  13 15335 11548 5.89 3.45 100 G0V
10348 7906 5.97 −0.06 523 K0III
16187 12160 6.07 0.36 452 K0
16220 12200 6.23 2.52 180 F8V
5 Tri  5 13372 10220 6.24 0.39 482 A1m
15464 11651 6.26 0.98 371 K1III
10588 8086 6.32 0.57 460 G8III-IV SB
13747 10446 6.35 2.48 194 K1III
9298 7147 6.39 −0.90 937 B7IIIMNp...
HD 13189
HD 13189
HD 13189 is an 8th magnitude star in Triangulum constellation. It is an orange bright giant star located 603 light years away. The mass is 3.5 times the Sun, which indicated that it was a B-type star when it was a main-sequence star...

 
13189 10085 7.57 1.23 602 K3II has a planet or 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...

 companion (b)
HD 9446
HD 9446
HD 9446 is a G5V class star, located about 172 light-years away in the constellation of Triangulum.- Planetary system :On 5 January 2010, scientists announced the discovery of two planets orbiting around HD 9446.- References :...

 
9446 7245 8.35 4.74 172 G5V has two planets
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
HD 9446 b
HD 9446 b is an exoplanet discovered in 2010 orbiting the star HD 9446 in the constellation Triangulum, 53 parsecs from Earth.- References :...

 & c
HD 9446 c
HD 9446 c is an exoplanet discovered in 2010 orbiting the star HD 9446 in the constellation Triangulum, 53 parsecs from Earth.- References :...

)
X Tri 12211 9383 8.86 2.76 541 A7V
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