Alnair
star · Grus · 1.7ᵐ
Blue-white star in Grus.
Notable facts
The light you see today left Alnair around the year 1925.
About 51 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Alnair in?
Alnair lies in Grus.
Is Alnair visible to the naked eye?
1.7ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Alnair?
Best observed in August.
Data
- RA / Dec (J2000)
- 22h 08m · −46° 58′
- Type
- star
- Constellation
- Grus
- How to observe
- 1.7ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- B7IV — blue-white star
- Absolute magnitude
- -0.7ᵐ
- Luminosity
- ≈166 × the Sun
- Distance
- ~101 light years
- Designation
- HIP 109268
Observing tip
Stars stay points at any magnification: aim your telescope for colour, brightness and companions, not detail.
Altitude above the horizon by latitude
| Latitude | Maximum altitude | Rise azimuth |
|---|---|---|
| +60° | never rises | — |
| +55° | never rises | — |
| +45° | never rises | — |
| +30° | 13° | 148° |
| 0° | 43° | 137° |
| −35° | 78° | 153° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 14:23 |
| February | 12:15 |
| March | 10:30 |
| April | 08:37 |
| May | 06:42 |
| June | 04:36 |
| July | 02:32 |
| August | 00:31 |
| September | 22:38 |
| October | 20:50 |
| November | 18:49 |
| December | 16:40 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.