Menu
Constellations / Triangulum

Triangulum

Trianguli

Northern 132 sq° Tri

Brightest star: Beta Trianguli

Open in Star Map Browse Catalog

Mythology

One of the original Ptolemaic constellations, its triangular shape was associated with the Nile Delta or the island of Sicily (Trinacria).

Observing Highlights

Contains the Triangulum Galaxy (M33), the third-largest galaxy in the Local Group and one of the most distant objects visible to the naked eye under ideal conditions.

Main Stars

20
Beta Tri

HIP 10064; Beta Tri; 4 Tri

3.00 mag A5III
Metallah

Metallah

HIP 8796; Alpha Tri; 2 Tri

3.41 mag 100.2″ B: 13.3 F5III
Gamma Tri

HIP 10670; Gamma Tri; 9 Tri

4.01 mag 4.7″ B: 19.0 A1Vnn
Delta Tri

HIP 10644; Delta Tri; 8 Tri

4.87 mag 166.8″ B: 13.6 G0.5V
6 Tri

HIP 10280; 6 Tri

4.94 mag 4.0″ B: 6.7 G5III+F5V
10 Tri

HIP 10793; 10 Tri

5.03 mag 58.3″ B: 13.2 A2V
14 Tri

HIP 11784; 14 Tri

5.15 mag K5III
7 Tri

HIP 10559; 7 Tri

5.28 mag A0V
12 Tri

HIP 11486; 12 Tri

5.29 mag 0.1″ B: 7.9 F0III
R Tri

HIP 12193

5.30 mag 5.4 - 12.6 M M4IIIe
15 Tri

HIP 12086; 15 Tri

5.35 mag 142.4″ B: 6.8 M3IIIa
Epsilon Tri

HIP 9570; Epsilon Tri; 3 Tri

5.50 mag 4.4″ B: 11.4 A2V
11 Tri

HIP 11432; 11 Tri

5.54 mag gK1
HIP 7943
5.64 mag B9IV-V
HIP 8433
5.79 mag F8V
HIP 9132
5.82 mag M2III
HIP 11840
5.83 mag K0III
13 Tri

HIP 11548; 13 Tri

5.89 mag G0V
HIP 7906
5.99 mag K0III
HIP 12160
6.10 mag K0

Double Stars

7
6 Tri

HIP 10280; 6 Tri

4.94 mag 4.0″ B: 6.7 G5III+F5V
15 Tri

HIP 12086; 15 Tri

5.35 mag 142.4″ B: 6.8 M3IIIa
Gamma Tri

HIP 10670; Gamma Tri; 9 Tri

4.01 mag 4.7″ B: 19.0 A1Vnn
10 Tri

HIP 10793; 10 Tri

5.03 mag 58.3″ B: 13.2 A2V
Metallah

Metallah

HIP 8796; Alpha Tri; 2 Tri

3.41 mag 100.2″ B: 13.3 F5III
Epsilon Tri

HIP 9570; Epsilon Tri; 3 Tri

5.50 mag 4.4″ B: 11.4 A2V
Delta Tri

HIP 10644; Delta Tri; 8 Tri

4.87 mag 166.8″ B: 13.6 G0.5V

Variable Stars

1
R Tri

HIP 12193

5.30 mag 5.4 - 12.6 M M4IIIe

Deep Sky Objects

30
Galaxy (30)
M33

NGC 598

5.7 mag 62. Sc
NGC 925
10.0 mag 9.8 SABd
NGC 672
10.8 mag 6.6 SBc
NGC 784
11.8 mag 6.2 SBd
IC 1727
11.6 mag 6.2 SBm
NGC 669
13.0 mag 3.4 Sab
NGC 684
13.0 mag 3.9 Sb
NGC 949
11.9 mag 2.8 Sb
NGC 783
13.0 mag 1.8 Sc
NGC 959
13.0 mag 2.2 Sd
NGC 735
14.0 mag 2.0 Sb
NGC 740
15.0 mag 1.7 SBb
NGC 761
15.0 mag 1.6 SBa
NGC 1067
15.0 mag 1.3 SABc
IC 1731
— mag 1.7 SABc
IC 1784
13.2 mag 1.6 Sbc
IC 1792
15.0 mag 1.7 Sb
IC 1793
15.0 mag 1.8 Sab
IC 1823
15.0 mag 2.3 Sc
NGC 579
13.0 mag Sc
NGC 582
13.0 mag SBb
NGC 587
13.0 mag SABb
NGC 634
14.0 mag Sa
NGC 688
13.0 mag Sb
NGC 769
13.0 mag Sc
NGC 777
12.0 mag 3.0 E
NGC 780
14.0 mag Sb
NGC 789
14.0 mag Sb
NGC 819
14.0 mag Sbc
NGC 861
15.0 mag Sb