Star · A1V
21 Lyn
21 Lyn is a main-sequence star of spectral type A1V in the constellation Lynx, 274.0 light-years from the Sun.
| Other names | HIP 36145 |
|---|---|
| Constellation | Lynx |
| Distance | 274.0 light-years (84.0 pc) |
| Apparent magnitude | magnitude 4.61 |
| Absolute magnitude | magnitude −0.01 |
| Spectral type | A1V |
| Surface temperature | 10,140 K |
| Luminosity | 122 L☉ |
| Radius | 3.58 R☉ |
| Mass | 3.58 M☉ (estimated) |
| Right ascension (J2000) | 7h 26m 42.9s |
| Declination (J2000) | +49° 12′ 41″ |
| Space velocity (relative to the Sun) | 32.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.61). Visible from the whole Northern Hemisphere and south to latitude 41° S. North of latitude 41° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1752. 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 21 Lyn, the Sun would look like a star of magnitude 9.45, in the direction where our sky has the constellation Telescopium. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 37140 13.0 light-years
- HIP 36672 13.7 light-years
- HIP 35824 18.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.