Star · G8 III/IV
HD 11977
HD 11977 is a giant star of spectral type G8 III/IV in the constellation Hydrus, 221.2 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | η² Hyi · HIP 8928 |
|---|---|
| Constellation | Hydrus |
| Distance | 221.2 light-years (67.8 pc) |
| Apparent magnitude | magnitude 4.68 |
| Absolute magnitude | magnitude 0.52 |
| Spectral type | G8 III/IV |
| Surface temperature | 4,970 K |
| Luminosity | 69 L☉ |
| Radius | 10.1 R☉ |
| Mass | 1.91 M☉ |
| Age | 1.2 billion years |
| Metallicity [Fe/H] | -0.21 |
| Right ascension (J2000) | 1h 54m 56.2s |
| Declination (J2000) | −67° 38′ 50″ |
| Space velocity (relative to the Sun) | 38.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.68). Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° 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 1805. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around HD 11977, the Sun would look like a star of magnitude 8.99, in the direction where our sky has the constellation Draco. It would be invisible to the naked eye.
Planets
- HD 11977 b 711-day orbit · 12.7 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 9686 10.6 light-years
- HIP 7311 11.0 light-years
- HIP 9308 11.2 light-years
- HIP 9771 14.2 light-years
- HIP 8394 15.5 light-years
- HIP 10548 16.5 light-years
- HIP 7082 16.9 light-years
- HIP 9469 18.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.