Star · M1V
GJ 1213
GJ 1213 is a main-sequence star of spectral type M1V in the constellation Hercules, 78.4 light-years from the Sun.
| Other names | HIP 84223 |
|---|---|
| Constellation | Hercules |
| Distance | 78.4 light-years (24.0 pc) |
| Apparent magnitude | magnitude 10.07 |
| Absolute magnitude | magnitude 8.17 |
| Spectral type | M1V |
| Surface temperature | 4,160 K |
| Luminosity | 0.113 L☉ |
| Radius | 0.647 R☉ |
| Mass | 0.579 M☉ (estimated) |
| Right ascension (J2000) | 17h 12m 55.1s |
| Declination (J2000) | +42° 19′ 54″ |
| Space velocity (relative to the Sun) | 123.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.07. Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1948. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around GJ 1213, the Sun would look like a star of magnitude 6.73, in the direction where our sky has the constellation Columba. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASSI J1707333+430130 6.80 light-years
- CWISE J170127.12+415805.3 8.03 light-years
- GJ 3974 8.93 light-years
- WISEPA J171104.60+350036.8 10.3 light-years
- GJ 4010 10.9 light-years
- SDSS J163030.53+434404.0 11.7 light-years
- Gl 679 12.2 light-years
- HIP 81919 12.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.