M108
spiral galaxy · Ursa Major · 10.0ᵐ
A Messier catalogue object — spiral galaxy in Ursa Major.
Notable facts
About 1/3 the apparent diameter of the Moon.
In brief
Which constellation is M108 in?
M108 lies in Ursa Major.
Is M108 visible to the naked eye?
10.0ᵐ — a telescope is needed.
When is the best time to observe M108?
Best observed in March.
Data
- RA / Dec (J2000)
- 11h 12m · +55° 40′
- Type
- spiral galaxy
- Constellation
- Ursa Major
- How to observe
- 10.0ᵐ — a telescope is needed
- Angular size
- 9×2′
- Designation
- M108 · NGC 3556
Observing tip
Get away from city light pollution — it washes out the faint glow of galaxies first.
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | 86° · never sets | — |
| +55° | 89° · never sets | — |
| +45° | 79° · never sets | — |
| +30° | 64° | 18° |
| 0° | 34° | 34° |
| −35° | never rises | — |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 03:26 |
| February | 01:19 |
| March | 23:33 |
| April | 21:40 |
| May | 19:46 |
| June | 17:40 |
| July | 15:36 |
| August | 13:35 |
| September | 11:42 |
| October | 09:53 |
| November | 07:52 |
| December | 05:44 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.