Ukdah
star · Hydra · 3.9ᵐ
Orange star in Hydra.
Notable facts
The light you see today left Ukdah around the year 1763.
About 7 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Ukdah in?
Ukdah lies in Hydra.
Is Ukdah visible to the naked eye?
3.9ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Ukdah?
Best observed in February.
Data
- RA / Dec (J2000)
- 9h 40m · −1° 09′
- Type
- star
- Constellation
- Hydra
- How to observe
- 3.9ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- K3IIIvar — orange star
- Absolute magnitude
- -0.6ᵐ
- Luminosity
- ≈154 × the Sun
- Distance
- ~263 light years
- Designation
- HIP 47431
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° | 29° | 92° |
| +55° | 34° | 92° |
| +45° | 44° | 92° |
| +30° | 59° | 91° |
| 0° | 89° | 91° |
| −35° | 56° | 91° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 01:54 |
| February | 23:47 |
| March | 22:02 |
| April | 20:08 |
| May | 18:14 |
| June | 16:08 |
| July | 14:04 |
| August | 12:03 |
| September | 10:10 |
| October | 08:21 |
| November | 06:20 |
| December | 04:12 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.