Star · F7/F8V
HD 22946
HD 22946 is a main-sequence star of spectral type F7/F8V in the constellation Eridanus, 205.2 light-years from the Sun. It is orbited by 3 confirmed exoplanet(s).
| Other names | HIP 17047 |
|---|---|
| Constellation | Eridanus |
| Distance | 205.2 light-years (62.9 pc) |
| Apparent magnitude | magnitude 8.27 |
| Absolute magnitude | magnitude 4.28 |
| Spectral type | F7/F8V |
| Surface temperature | 6,170 K |
| Luminosity | 1.62 L☉ |
| Radius | 1.12 R☉ |
| Mass | 1.1 M☉ |
| Age | 2.5 billion years |
| Metallicity [Fe/H] | -0.08 |
| Right ascension (J2000) | 3h 39m 16.8s |
| Declination (J2000) | −42° 45′ 45″ |
| Space velocity (relative to the Sun) | 40.2 km/s |
In the sky
Too faint for the naked eye (magnitude 8.27); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 47° N. South of latitude 47° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1821. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around HD 22946, the Sun would look like a star of magnitude 8.82, in the direction where our sky has the constellation Boötes. It would be invisible to the naked eye.
Planets
- TOI-411 b 4.04-day orbit · 1.36 R⊕
- TOI-411 c 9.57-day orbit · 2.33 R⊕
- HD 22946 d 47.4-day orbit · 2.61 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 16315 10.6 light-years
- HIP 17029 10.8 light-years
- HIP 16128 12.4 light-years
- HIP 16160 13.8 light-years
- HIP 15703 14.3 light-years
- HIP 16285 15.1 light-years
- HIP 16272 19.3 light-years
- HIP 19212 19.7 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.