Alterf
star · Leo · 4.3ᵐ
Orange star in Leo.
Notable facts
The light you see today left Alterf around the year 1697.
About 5 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Alterf in?
Alterf lies in Leo.
Is Alterf visible to the naked eye?
4.3ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Alterf?
Best observed in February.
Data
- RA / Dec (J2000)
- 9h 32m · +22° 58′
- Type
- star
- Constellation
- Leo
- How to observe
- 4.3ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- K5IIIvar — orange star
- Absolute magnitude
- -0.7ᵐ
- Luminosity
- ≈163 × the Sun
- Distance
- ~329 light years
- Designation
- HIP 46750
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° | 53° | 39° |
| +55° | 58° | 47° |
| +45° | 68° | 57° |
| +30° | 83° | 63° |
| 0° | 67° | 67° |
| −35° | 32° | 62° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 01:46 |
| February | 23:39 |
| March | 21:54 |
| April | 20:00 |
| May | 18:06 |
| June | 16:00 |
| July | 13:56 |
| August | 11:55 |
| September | 10:02 |
| October | 08:13 |
| November | 06:12 |
| December | 04:04 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.