The Triangulum constellation
Tri · Catalogue stars: 5
Why this name?
The three principal stars form an elongated triangle. The Greeks compared it to their triangular letter delta.
A little history
Despite its simple geometric name, Triangulum is an ancient constellation in Ptolemy’s catalogue. Ancient authors also compared its outline to the island of Sicily.
Data
- IAU code
- Tri
- Catalogue stars
- 5
- Messier objects
- 1
- Brightest star
- HIP 10064 · 3.0ᵐ
Messier objects
Stars
Stars (HIP)
- HIP 10064 · 3.0ᵐ · A5III
- HIP 10670 · 4.0ᵐ · A1Vnn
- HIP 10644 · 4.8ᵐ · G0V
- HIP 10280 · 4.9ᵐ · F5V comp SB
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | 62° · never sets | — |
| +55° | 67° | 21° |
| +45° | 77° | 41° |
| +30° | 88° | 52° |
| 0° | 58° | 58° |
| −35° | 23° | 49° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 18:24 |
| February | 16:17 |
| March | 14:32 |
| April | 12:38 |
| May | 10:44 |
| June | 08:38 |
| July | 06:34 |
| August | 04:33 |
| September | 02:40 |
| October | 00:51 |
| November | 22:51 |
| December | 20:42 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.
Neighbouring constellations
In brief
Which is the brightest star in Triangulum?
HIP 10064 — 3.0ᵐ.