Algedi
star · Capricornus · 3.6ᵐ
Yellow star (like the Sun) in Capricornus.
Notable facts
The light you see today left Algedi around the year 1920.
About 9 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Algedi in?
Algedi lies in Capricornus.
Is Algedi visible to the naked eye?
3.6ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Algedi?
Best observed in July.
Data
- RA / Dec (J2000)
- 20h 18m · −12° 33′
- Type
- star
- Constellation
- Capricornus
- How to observe
- 3.6ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- G6/G8III — yellow star (like the Sun)
- Absolute magnitude
- 1.0ᵐ
- Luminosity
- ≈33 × the Sun
- Distance
- ~106 light years
- Designation
- HIP 100064
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° | 17° | 116° |
| +55° | 22° | 112° |
| +45° | 32° | 108° |
| +30° | 47° | 105° |
| 0° | 77° | 103° |
| −35° | 68° | 105° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 12:33 |
| February | 10:25 |
| March | 08:40 |
| April | 06:47 |
| May | 04:52 |
| June | 02:46 |
| July | 00:42 |
| August | 22:41 |
| September | 20:48 |
| October | 18:59 |
| November | 16:59 |
| December | 14:50 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.