Alterf
star · Leo · 4.3ᵐ
Orange star in Leo. It lies about 329 light years from Earth. In visible light it shines roughly 160 times as bright as the Sun.
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 (visual)
- ≈160 × 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.