Star · G0 V
HD 210277
HD 210277 is a main-sequence star of spectral type G0 V in the constellation Aquarius, 69.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | Gl 848.4 · HIP 109378 |
|---|---|
| Constellation | Aquarius |
| Distance | 69.6 light-years (21.3 pc) |
| Apparent magnitude | magnitude 6.54 |
| Absolute magnitude | magnitude 4.89 |
| Spectral type | G0 V |
| Surface temperature | 5,540 K |
| Luminosity | 0.929 L☉ |
| Radius | 1.07 R☉ |
| Mass | 1.01 M☉ |
| Age | 12.0 billion years |
| Metallicity [Fe/H] | 0.22 |
| Right ascension (J2000) | 22h 09m 29.9s |
| Declination (J2000) | −7° 32′ 55″ |
| Space velocity (relative to the Sun) | 50.8 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 82° N. 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 1956. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around HD 210277, the Sun would look like a star of magnitude 6.48, in the direction where our sky has the constellation Leo. It would be visible to the naked eye.
Planets
- HD 210277 b 442-day orbit · 13.6 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4262 7.19 light-years
- WISE J214706.78-102924.0 9.83 light-years
- HD 215152 10.4 light-years
- GJ 4284 11.5 light-years
- GJ 4294 11.8 light-years
- 53 Aqr 12.6 light-years
- 2MASS J21580457-1550098 12.7 light-years
- HIP 110980 13.2 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.