Grumium
star · Draco · 3.7ᵐ
Orange star in Draco. It lies about 113 light years from Earth. In visible light it shines roughly 33 times as bright as the Sun.
Notable facts
The light you see today left Grumium around the year 1913.
About 8 times brighter than the faintest star visible to the naked eye.
In brief
Which constellation is Grumium in?
Grumium lies in Draco.
Is Grumium visible to the naked eye?
3.7ᵐ — visible to the naked eye (under dark skies).
When is the best time to observe Grumium?
Best observed in June.
Data
- RA / Dec (J2000)
- 17h 54m · +56° 52′
- Type
- star
- Constellation
- Draco
- How to observe
- 3.7ᵐ — visible to the naked eye (under dark skies)
- Spectral class
- K2III — orange star
- Absolute magnitude
- 1.0ᵐ
- Luminosity (visual)
- ≈33 × the Sun
- Distance
- ~113 light years
- Designation
- HIP 87585
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° | 87° · never sets | — |
| +55° | 88° · never sets | — |
| +45° | 78° · never sets | — |
| +30° | 63° | 15° |
| 0° | 33° | 33° |
| −35° | never rises | — |
Geometric altitude at upper culmination, atmospheric refraction not included. Positive latitudes are in the northern hemisphere.
Culmination time by month
| Month | Culmination |
|---|---|
| January | 10:08 |
| February | 08:01 |
| March | 06:15 |
| April | 04:22 |
| May | 02:28 |
| June | 00:22 |
| July | 22:18 |
| August | 20:17 |
| September | 18:24 |
| October | 16:35 |
| November | 14:34 |
| December | 12:26 |
Upper culmination in local solar time — no time-zone or daylight-saving correction applied.