Star · M4V
CWISEP J210007.87-293139.8
CWISEP J210007.87-293139.8 is a main-sequence star of spectral type M4V in the constellation Microscopium, 75.0 light-years from the Sun.
| Constellation | Microscopium |
|---|---|
| Distance | 75.0 light-years (23.0 pc) |
| Apparent magnitude | magnitude 28.81 |
| Absolute magnitude | magnitude 27.00 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.49 × 10⁻⁸ L☉ |
| Radius | 5.93 × 10⁻⁴ R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 00m 07.6s |
| Declination (J2000) | −29° 31′ 39″ |
| Space velocity (relative to the Sun) | 45.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 28.81. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° 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 1951. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around CWISEP J210007.87-293139.8, the Sun would look like a star of magnitude 6.64, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4162 4.10 light-years
- GJ 4157 6.27 light-years
- Gl 811 7.46 light-years
- GJ 9714 8.98 light-years
- WISE J212321.92-261405.1 9.40 light-years
- PSO J318.5338-22.8603 9.83 light-years
- GJ 1257 11.8 light-years
- CWISEP J213838.74-313808.5 12.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.