M34
open cluster · Perseus · 5.2ᵐ
An open cluster midway between Algol and Almach, the size of the full Moon — a fine binocular target.
Notable facts
About the same apparent size as the full Moon.
In brief
Which constellation is M34 in?
M34 lies in Perseus.
Is M34 visible to the naked eye?
5.2ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe M34?
Best observed in October.
Data
- RA / Dec (J2000)
- 2h 42m · +42° 47′
- Type
- open cluster
- Constellation
- Perseus
- How to observe
- 5.2ᵐ — visible to the naked eye (under dark skies)
- Angular size
- 35′
- Designation
- M34 · NGC 1039
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° | 73° · never sets | — |
| +55° | 78° · never sets | — |
| +45° | 88° | 16° |
| +30° | 77° | 38° |
| 0° | 47° | 47° |
| −35° | 12° | 34° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 18:56 |
| February | 16:49 |
| March | 15:04 |
| April | 13:11 |
| May | 11:16 |
| June | 09:10 |
| July | 07:06 |
| August | 05:05 |
| September | 03:12 |
| October | 01:23 |
| November | 23:23 |
| December | 21:14 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.