Star · K7
Gl 57.1B
Gl 57.1B is a main-sequence star of spectral type K7 in the constellation Cetus, 98.4 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 98.4 light-years (30.2 pc) |
| Apparent magnitude | magnitude 10.38 |
| Absolute magnitude | magnitude 7.98 |
| Spectral type | K7 |
| Surface temperature | 3,980 K |
| Luminosity | 0.16 L☉ |
| Radius | 0.84 R☉ |
| Mass | 0.632 M☉ (estimated) |
| Right ascension (J2000) | 1h 23m 00.6s |
| Declination (J2000) | −12° 57′ 30″ |
| Space velocity (relative to the Sun) | 87.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.38. Visible from the whole Southern Hemisphere and north to latitude 77° N. South of latitude 77° 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 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around Gl 57.1B, the Sun would look like a star of magnitude 7.23, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 57.1C 0.11 light-years
- Gl 57.1A 0.39 light-years
- HIP 7776 7.42 light-years
- Gl 56 9.00 light-years
- HIP 7276 11.1 light-years
- HIP 6273 12.1 light-years
- WISEA J010738.75-131413.7 14.9 light-years
- 2MASSW J0058425-065123 14.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.