Star · G2/3V
HD 82943
HD 82943 is a main-sequence star of spectral type G2/3V in the constellation Hydra, 90.3 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 47007 |
|---|---|
| Constellation | Hydra |
| Distance | 90.3 light-years (27.7 pc) |
| Apparent magnitude | magnitude 6.54 |
| Absolute magnitude | magnitude 4.33 |
| Spectral type | G2/3V |
| Surface temperature | 5,940 K |
| Luminosity | 1.56 L☉ |
| Radius | 1.18 R☉ |
| Mass | 1.08 M☉ |
| Age | 2.4 billion years |
| Metallicity [Fe/H] | 0.26 |
| Right ascension (J2000) | 9h 34m 50.7s |
| Declination (J2000) | −12° 07′ 46″ |
| Space velocity (relative to the Sun) | 24.3 km/s |
In the sky
Too faint for the naked eye (magnitude 6.54); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1936. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around HD 82943, the Sun would look like a star of magnitude 7.04, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- HD 82943 c 220-day orbit · 13.4 R⊕
- HD 82943 b 441-day orbit · 13.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- CWISE J094925.88-102601.9 6.56 light-years
- GJ 3565 9.53 light-years
- PSO J136.5380-14.3267 11.6 light-years
- HIP 44526 13.0 light-years
- HIP 49809 13.6 light-years
- GJ 3581 13.7 light-years
- CWISE J095316.32-094318.9 14.2 light-years
- 2MASSW J0928397-160312 14.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.