Star · A4V
22 Com
22 Com is a main-sequence star of spectral type A4V in the constellation Coma Berenices, 278.4 light-years from the Sun.
| Other names | HIP 61295 |
|---|---|
| Constellation | Coma Berenices |
| Distance | 278.4 light-years (85.3 pc) |
| Apparent magnitude | magnitude 6.28 |
| Absolute magnitude | magnitude 1.62 |
| Spectral type | A4V |
| Surface temperature | 8,890 K |
| Luminosity | 22.5 L☉ |
| Radius | 2 R☉ |
| Mass | 2.21 M☉ (estimated) |
| Right ascension (J2000) | 12h 33m 34.2s |
| Declination (J2000) | +24° 16′ 59″ |
| Space velocity (relative to the Sun) | 6.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.28). Visible from the whole Northern Hemisphere and south to latitude 66° S. North of latitude 66° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1748. 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 22 Com, the Sun would look like a star of magnitude 9.49, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 21 Com 8.90 light-years
- HIP 60797 10.4 light-years
- HIP 60880 11.0 light-years
- HIP 60611 11.2 light-years
- HIP 60582 11.7 light-years
- HIP 60525 12.0 light-years
- SDSS J123322.63+213805.1 13.5 light-years
- HIP 60266 14.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.