M47
open cluster · Puppis · 4.4ᵐ
A bright, coarse cluster visible to the naked eye. The richer but fainter M46 shares the same binocular field.
Notable facts
About the same apparent size as the full Moon.
In brief
Which constellation is M47 in?
M47 lies in Puppis.
Is M47 visible to the naked eye?
4.4ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe M47?
Best observed in January.
Data
- RA / Dec (J2000)
- 7h 37m · −14° 30′
- Type
- open cluster
- Constellation
- Puppis
- How to observe
- 4.4ᵐ — visible to the naked eye (under dark skies)
- Angular size
- 30′
- Designation
- M47 · NGC 2422
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° | 16° | 120° |
| +55° | 21° | 116° |
| +45° | 31° | 111° |
| +30° | 46° | 107° |
| 0° | 76° | 105° |
| −35° | 70° | 108° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 23:51 |
| February | 21:44 |
| March | 19:58 |
| April | 18:05 |
| May | 16:11 |
| June | 14:05 |
| July | 12:01 |
| August | 10:00 |
| September | 08:07 |
| October | 06:18 |
| November | 04:17 |
| December | 02:09 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.