M67
open cluster · Cancer · 6.9ᵐ
One of the oldest open clusters known, at about 4 billion years. Its stars match the Sun in age and composition, so astronomers use it to study the fate of stars like ours.
Notable facts
About the same apparent size as the full Moon.
In brief
Which constellation is M67 in?
M67 lies in Cancer.
Is M67 visible to the naked eye?
6.9ᵐ — visible with binoculars.
When is the best time to observe M67?
Best observed in January.
Data
- RA / Dec (J2000)
- 8h 50m · +11° 49′
- Type
- open cluster
- Constellation
- Cancer
- How to observe
- 6.9ᵐ — visible with binoculars
- Angular size
- 30′
- Designation
- M67 · NGC 2682
Observing tip
Best in binoculars or a telescope at low power, so the whole cluster fits in the field of view.
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | 42° | 66° |
| +55° | 47° | 69° |
| +45° | 57° | 73° |
| +30° | 72° | 76° |
| 0° | 78° | 78° |
| −35° | 43° | 76° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 01:05 |
| February | 22:58 |
| March | 21:12 |
| April | 19:19 |
| May | 17:25 |
| June | 15:18 |
| July | 13:15 |
| August | 11:14 |
| September | 09:20 |
| October | 07:32 |
| November | 05:31 |
| December | 03:22 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.