Star · F2V
HIP 103646
HIP 103646 is a main-sequence star of spectral type F2V in the constellation Microscopium, 135.6 light-years from the Sun.
| Constellation | Microscopium |
|---|---|
| Distance | 135.6 light-years (41.6 pc) |
| Apparent magnitude | magnitude 6.10 |
| Absolute magnitude | magnitude 3.01 |
| Spectral type | F2V |
| Surface temperature | 6,880 K |
| Luminosity | 5.33 L☉ |
| Radius | 1.62 R☉ |
| Mass | 1.52 M☉ (estimated) |
| Right ascension (J2000) | 20h 59m 59.7s |
| Declination (J2000) | −36° 07′ 47″ |
| Space velocity (relative to the Sun) | 28.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.10). Visible from the whole Southern Hemisphere and north to latitude 54° N. South of latitude 54° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1890. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around HIP 103646, the Sun would look like a star of magnitude 7.92, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 103735 3.72 light-years
- HIP 103832 6.84 light-years
- WISEA J212354.78-365223.4 12.3 light-years
- 2MASS J20414283-3506442 12.4 light-years
- GJ 9713 14.0 light-years
- HIP 101274 14.5 light-years
- HIP 102580 16.0 light-years
- HIP 101292 17.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.