Star · M4V
WISEA J020047.29-510521.4
WISEA J020047.29-510521.4 is a main-sequence star of spectral type M4V in the constellation Eridanus, 81.5 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 81.5 light-years (25.0 pc) |
| Apparent magnitude | magnitude 21.91 |
| Absolute magnitude | magnitude 19.92 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.69 × 10⁻⁵ L☉ |
| Radius | 0.0155 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 2h 00m 47.1s |
| Declination (J2000) | −51° 05′ 20″ |
| Space velocity (relative to the Sun) | 21.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.91. Visible from the whole Southern Hemisphere and north to latitude 39° N. South of latitude 39° 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 1944. 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 WISEA J020047.29-510521.4, the Sun would look like a star of magnitude 6.82, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J020110.68-523916.9 2.23 light-years
- Gl 81.3 5.71 light-years
- Gl 93 6.21 light-years
- CWISE J015042.24-462155.3 7.70 light-years
- CWISE J011931.78-493750.4 9.94 light-years
- GJ 3102 10.8 light-years
- HD 13808 11.4 light-years
- CWISE J011558.74-461620.8 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.