Star · M4V
2MASS J21512543-2441000
2MASS J21512543-2441000 is a main-sequence star of spectral type M4V in the constellation Capricornus, 85.8 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 85.8 light-years (26.3 pc) |
| Apparent magnitude | magnitude 21.25 |
| Absolute magnitude | magnitude 19.15 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.44 × 10⁻⁵ L☉ |
| Radius | 0.0221 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 51m 25.5s |
| Declination (J2000) | −24° 40′ 59″ |
| Space velocity (relative to the Sun) | 34.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.25. Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° S it never sets. 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 1940. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around 2MASS J21512543-2441000, the Sun would look like a star of magnitude 6.93, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 836.1 5.71 light-years
- 2MASS J22092183-2711329 9.23 light-years
- 37 Cap 9.97 light-years
- WISE J212321.92-261405.1 11.3 light-years
- HD 204941 11.9 light-years
- HIP 106350 12.0 light-years
- GJ 4243B 13.9 light-years
- HIP 110750 14.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.