Deneb Algedi
star · Capricornus · 2.9ᵐ
White star in Capricornus.
Notable facts
About 18 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Deneb Algedi in?
Deneb Algedi lies in Capricornus.
Is Deneb Algedi visible to the naked eye?
2.9ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Deneb Algedi?
Best observed in August.
Data
- RA / Dec (J2000)
- 21h 47m · −16° 08′
- Type
- star
- Constellation
- Capricornus
- How to observe
- 2.9ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- A5mF2 (IV) — white star
- Absolute magnitude
- 2.5ᵐ
- Luminosity
- ≈8.7 × the Sun
- Distance
- ~39 light years
- Designation
- HIP 107556
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° | 14° | 124° |
| +55° | 19° | 119° |
| +45° | 29° | 113° |
| +30° | 44° | 109° |
| 0° | 74° | 106° |
| −35° | 71° | 110° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 14:02 |
| February | 11:54 |
| March | 10:09 |
| April | 08:16 |
| May | 06:21 |
| June | 04:15 |
| July | 02:11 |
| August | 00:10 |
| September | 22:17 |
| October | 20:28 |
| November | 18:28 |
| December | 16:19 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.