Star · K2III
Grumium
Grumium is a giant star of spectral type K2III in the constellation Draco, 112.2 light-years from the Sun.
| Other names | ξ Dra · HIP 87585 |
|---|---|
| Constellation | Draco |
| Distance | 112.2 light-years (34.4 pc) |
| Apparent magnitude | magnitude 3.73 |
| Absolute magnitude | magnitude 1.05 |
| Spectral type | K2III |
| Surface temperature | 4,350 K |
| Luminosity | 66.6 L☉ |
| Radius | 14.3 R☉ |
| Mass | 3.02 M☉ (estimated) |
| Right ascension (J2000) | 17h 53m 31.7s |
| Declination (J2000) | +56° 52′ 21″ |
| Space velocity (relative to the Sun) | 32.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.73). Visible from the whole Northern Hemisphere and south to latitude 33° S. North of latitude 33° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1914. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.0 million years.
The Sun seen from there
From a planet around Grumium, the Sun would look like a star of magnitude 7.51, in the direction where our sky has the constellation Pictor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J173101.41+531047.9 10.5 light-years
- HIP 86346 12.4 light-years
- GJ 4020A 12.4 light-years
- 2MASS J18131803+5101246 14.6 light-years
- HIP 84203 14.8 light-years
- CWISE J174907.16+554050.3 15.2 light-years
- ν¹ Dra 15.4 light-years
- ν² Dra 15.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.