Star · A2V
30 Com
30 Com is a main-sequence star of spectral type A2V in the constellation Coma Berenices, 275.0 light-years from the Sun.
| Other names | HIP 62576 |
|---|---|
| Constellation | Coma Berenices |
| Distance | 275.0 light-years (84.3 pc) |
| Apparent magnitude | magnitude 5.76 |
| Absolute magnitude | magnitude 1.13 |
| Spectral type | A2V |
| Surface temperature | 9,530 K |
| Luminosity | 38.7 L☉ |
| Radius | 2.28 R☉ |
| Mass | 2.58 M☉ (estimated) |
| Right ascension (J2000) | 12h 49m 17.5s |
| Declination (J2000) | +27° 33′ 09″ |
| Space velocity (relative to the Sun) | 38.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.76). Visible from the whole Northern Hemisphere and south to latitude 62° S. North of latitude 62° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1751. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.9 million years.
The Sun seen from there
From a planet around 30 Com, the Sun would look like a star of magnitude 9.46, in the direction where our sky has the constellation Sculptor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 31 Com 2.59 light-years
- HIP 62805 11.5 light-years
- HIP 63405 12.6 light-years
- HIP 62499 14.0 light-years
- HIP 62256 14.2 light-years
- HIP 62129 16.3 light-years
- HIP 63333 16.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.