Diadem
star · Coma Berenices · 4.3ᵐ
Yellow-white star in Coma Berenices.
Notable facts
The light you see today left Diadem around the year 1968.
About 5 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Diadem in?
Diadem lies in Coma Berenices.
Is Diadem visible to the naked eye?
4.3ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Diadem?
Best observed in April.
Data
- RA / Dec (J2000)
- 13h 10m · +17° 32′
- Type
- star
- Constellation
- Coma Berenices
- How to observe
- 4.3ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- F5V — yellow-white star
- Absolute magnitude
- 3.1ᵐ
- Luminosity
- ≈5.1 × the Sun
- Distance
- ~58 light years
- Designation
- HIP 64241
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° | 48° | 53° |
| +55° | 53° | 58° |
| +45° | 63° | 65° |
| +30° | 78° | 70° |
| 0° | 72° | 72° |
| −35° | 37° | 68° |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 05:24 |
| February | 03:17 |
| March | 01:32 |
| April | 23:39 |
| May | 21:44 |
| June | 19:38 |
| July | 17:34 |
| August | 15:33 |
| September | 13:40 |
| October | 11:51 |
| November | 09:51 |
| December | 07:42 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.