List of stars in Triangulum

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This is the list of notable stars in the constellation Triangulum, sorted by decreasing brightness.

Name B F Var HD HIP RA Dec vis.
mag.
abs.
mag.
Dist. (ly) Sp. class Notes
β Tri β 4 13161 10064 02h 09m 32.52s +34° 59′ 14.6″ 3.00 0.09 124 A5III Deltotum, Deltoton; suspected variable
α Tri α 2 11443 8796 01h 53m 04.90s +29° 34′ 45.8″ 3.42 1.95 64 F6IV Mothallah, Metallah, Ras al Mothallah, Elmuthalleth, Caput Trianguli; rotating ellipsoidal variable
γ Tri γ 9 14055 10670 02h 17m 18.84s +33° 50′ 50.4″ 4.03 1.24 118 A1Vnn
δ Tri δ 8 13974 10644 02h 17m 02.42s +34° 13′ 29.4″ 4.84 4.66 35 G0V
ι Tri ι 6 TZ 13480 10280 02h 12m 22.32s +30° 18′ 11.6″ 4.94 0.08 305 F5V comp SB RS CVn variable, ΔV = 0.09m, P = 14.732 d
14 Tri 14 15656 11784 02h 32m 06.14s +36° 08′ 50.0″ 5.15 −0.25 391 K5III variable star, ΔV = 0.006m, P = 0.08576 d
7 Tri 7 13869 10559 02h 15m 56.30s +33° 21′ 32.3″ 5.25 0.48 293 A0V
10 Tri 10 14252 10793 02h 18m 56.99s +28° 38′ 33.6″ 5.29 0.13 350 A2V
12 Tri 12 15257 11486 02h 28m 09.99s +29° 40′ 10.3″ 5.29 1.90 155 F0III
15 Tri 15 16058 12086 02h 35m 46.80s +34° 41′ 15.7″ 5.38 M3III suspected slow irregular variable, ΔV = 0.14m
R Tri R 16210 12193 02h 37m 02.50s +34° 15′ 50.0″ 5.40 1299 M4IIIe Mira variable, Vmax = 5.4m, Vmin = 12.6m, P = 266.9 d
ε Tri ε 3 12471 9570 02h 02m 57.97s +33° 17′ 02.9″ 5.50 0.22 370 A2V binary star
11 Tri 11 15176 11432 02h 27m 27.79s +31° 48′ 04.9″ 5.55 0.83 286 K1III:
HD 10390 10390 7943 01h 42m 03.45s +35° 14′ 44.8″ 5.63 1.13 259 B9IV-V
HD 11007 11007 8433 01h 48m 41.68s +32° 41′ 22.2″ 5.78 3.60 89 F8V
HD 11928 11928 9132 01h 57m 43.74s +27° 48′ 16.3″ 5.84 0.02 476 M2III variable star, ΔV = 0.013m, P = 50.65856 d
HD 15755 15755 11840 02h 32m 52.66s +34° 32′ 32.8″ 5.84 1.33 260 K0III
13 Tri 13 15335 11548 02h 28m 48.54s +29° 55′ 53.7″ 5.89 3.45 100 G0V
HD 10348 10348 7906 01h 41m 39.24s +30° 02′ 49.7″ 5.97 −0.06 523 K0III
HD 16187 16187 12160 02h 36m 43.05s +31° 36′ 27.6″ 6.07 0.36 452 K0
HD 16220 16220 12200 02h 37m 06.51s +32° 53′ 27.7″ 6.23 2.52 180 F8V
5 Tri 5 13372 10220 02h 11m 25.00s +31° 31′ 35.1″ 6.24 0.39 482 A1m
HD 15464 15464 11651 02h 30m 16.56s +33° 50′ 01.8″ 6.26 0.98 371 K1III variable star, ΔV = 0.005m, P = 0.26973 d
HD 10588 10588 8086 01h 43m 50.15s +32° 11′ 31.2″ 6.32 0.57 460 G8III-IV SB
HD 13747 13747 10446 02h 14m 37.88s +28° 41′ 29.1″ 6.35 2.48 194 K1III
HD 9298 9298 7147 01h 32m 07.58s +34° 47′ 59.9″ 6.39 −0.90 937 B7IIIMNp...
HD 13189 13189 10085 02h 09m 40.17s +32° 18′ 59.2″ 7.57 1.23 602 K3II has a planet or a brown dwarf companion (b)
HD 9446 9446 7245 01h 33m 20.18s +29° 15′ 54.5″ 8.35 4.74 172 G5V has two planets (b & c)
HD 12545 XX 12545 9630 02h 03m 47.11s +35° 35′ 28.7″ 8.42 522 K0III RS CVn variable, Vmax = 8.1m, Vmin = 8.7m, P = 24.26007 d
X Tri X 12211 9383 02h 00m 33.72s +27° 53′ 19.3″ 8.86 2.76 541 A7V Algol variable, Vmax = 8.55m, Vmin = 11.27m, P = 0.9715352 d
V Tri V 01h 31m 47.10s +30° 22′ 01.6″ 10.96 A3 β Lyr variable, Vmax = 10.7m, Vmin = 11.8m, P = 0.5852057 d
RV Tri RV 02h 13m 18.16s +31° 01′ 01.6″ 11.21 A2: Algol variable
WASP-56 01h 44m 19.59s +31° 41′ 22.5″ 11.46 G6 has a planet
RW Tri RW 02h 25m 36.15s +28° 05′ 50.9″ 12.50 M0V Algol variable and nova-like star, Vmax = 12.5m, Vmin = 15.61m, P = 0.231883392 d
AI Tri AI 02h 03m 48.61s +29° 59′ 25.8″ 15.30 M2.5 AM Her variable, Vmax = 14.7m, Vmin = 18.2m, P = 0.19174566 d
Var 83 01h 34m 10.91s +30° 34′ 37.4″ 15.40 3000000 in Triangulum Galaxy; luminous blue variable, Vmax = 15.4m, Vmin = 16.6m; one of the most luminous stars known
Var B 01h 33m 49.20s +30° 38′ 09.1″ 16.21 3000000 A in Triangulum Galaxy; luminous blue variable; one of the most luminous stars known
Var C 01h 33m 35.14s +30° 36′ 00.4″ 16.43 3000000 B in Triangulum Galaxy; luminous blue variable, Vmax = 15.2m, Vmin = 17.2m; one of the most luminous stars known
Var 19 01h 33m 57.1s +30° 45′ 12″ 18.20 3000000 in Triangulum Galaxy; formerly thought to be a Cepheid variable
M33 X-7 01h 33m 34.13s +30° 32′ 11.3″ 18.70 3000000 O6III in Triangulum Galaxy; High-mass X-ray binary; contains largest known stellar black hole
Var A 01h 32m 32.52s +30° 30′ 22.4″ 3000000 F8Ia in Triangulum Galaxy; luminous blue variable; one of the most luminous stars known
Var 2 Y 01h 34m 18.4s +30° 38′ 27″ 3000000 A:Iab:ed- in Triangulum Galaxy; luminous blue variable; one of the most luminous stars known
Table Legend:

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