Star · K3 V
HD 16905
HD 16905 is a main-sequence star of spectral type K3 V in the constellation Horologium, 129.9 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 12436 |
|---|---|
| Constellation | Horologium |
| Distance | 129.9 light-years (39.8 pc) |
| Apparent magnitude | magnitude 9.44 |
| Absolute magnitude | magnitude 6.44 |
| Spectral type | K3 V |
| Surface temperature | 4,870 K |
| Luminosity | 0.303 L☉ |
| Radius | 0.775 R☉ |
| Mass | 0.85 M☉ |
| Age | 6.1 billion years |
| Metallicity [Fe/H] | 0.24 |
| Right ascension (J2000) | 2h 40m 03.2s |
| Declination (J2000) | −61° 21′ 15″ |
| Space velocity (relative to the Sun) | 73.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.44. Visible from the whole Southern Hemisphere and north to latitude 29° N. South of latitude 29° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1896. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around HD 16905, the Sun would look like a star of magnitude 7.83, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Planets
- HD 16905 b 10,300-day orbit · 12.4 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 13359 3.42 light-years
- 2MASS J02235464-5815067 8.39 light-years
- HIP 10938 8.94 light-years
- HIP 12859 9.32 light-years
- HD 18599 13.1 light-years
- μ Hor 13.7 light-years
- HIP 10842 15.3 light-years
- 2MASS J02410564-5511466 16.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.