M9
globular cluster · Ophiuchus · 7.9ᵐ
A Messier catalogue object — globular cluster in Ophiuchus.
Notable facts
About 1/3 the apparent diameter of the Moon.
In brief
Which constellation is M9 in?
M9 lies in Ophiuchus.
Is M9 visible to the naked eye?
7.9ᵐ — visible with binoculars.
When is the best time to observe M9?
Best observed in June.
Data
- RA / Dec (J2000)
- 17h 19m · −18° 31′
- Type
- globular cluster
- Constellation
- Ophiuchus
- How to observe
- 7.9ᵐ — visible with binoculars
- Angular size
- 9′
- Designation
- M9 · NGC 6333
Observing tip
In binoculars it is a fuzzy ball; a 100–150 mm telescope starts to resolve individual stars around the edges.
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | 11° | 129° |
| +55° | 16° | 124° |
| +45° | 26° | 117° |
| +30° | 41° | 112° |
| 0° | 71° | 109° |
| −35° | 74° | 113° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 09:34 |
| February | 07:26 |
| March | 05:41 |
| April | 03:48 |
| May | 01:53 |
| June | 23:47 |
| July | 21:43 |
| August | 19:42 |
| September | 17:49 |
| October | 16:01 |
| November | 14:00 |
| December | 11:51 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.