Star · K3 V
HD 222237
HD 222237 is a main-sequence star of spectral type K3 V in the constellation Tucana, 37.3 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | Gl 902 · HIP 116745 |
|---|---|
| Constellation | Tucana |
| Distance | 37.3 light-years (11.4 pc) |
| Apparent magnitude | magnitude 7.09 |
| Absolute magnitude | magnitude 6.80 |
| Spectral type | K3 V |
| Surface temperature | 4,750 K |
| Luminosity | 0.216 L☉ |
| Radius | 0.71 R☉ |
| Mass | 0.76 M☉ |
| Age | 8.8 billion years |
| Metallicity [Fe/H] | -0.32 |
| Right ascension (J2000) | 23h 39m 37.1s |
| Declination (J2000) | −72° 43′ 19″ |
| Space velocity (relative to the Sun) | 80.7 km/s |
In the sky
Too faint for the naked eye (magnitude 7.09); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 17° N. South of latitude 17° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1989. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 662 thousand years.
The Sun seen from there
From a planet around HD 222237, the Sun would look like a star of magnitude 5.12, in the direction where our sky has the constellation Draco. It would be visible to the naked eye.
Planets
- HD 222237 b 14,900-day orbit · 12.8 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEP J235941.07-733504.8 1.12 light-years
- HIP 117828 4.72 light-years
- CWISEP J010527.69-783419.3 5.10 light-years
- WISEPA J231336.40-803700.3 5.49 light-years
- WISEA J221216.27-693121.6 6.10 light-years
- WISEPC J014807.25-720258.7 6.37 light-years
- GJ 4154 8.28 light-years
- Gl 865 8.51 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.