Star · M4V
WISEP J195550.11-441514.2
WISEP J195550.11-441514.2 is a main-sequence star of spectral type M4V in the constellation Sagittarius, 84.8 light-years from the Sun.
| Constellation | Sagittarius |
|---|---|
| Distance | 84.8 light-years (26.0 pc) |
| Apparent magnitude | magnitude 26.07 |
| Absolute magnitude | magnitude 24.00 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.96 × 10⁻⁷ L☉ |
| Radius | 0.00237 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 19h 55m 49.3s |
| Declination (J2000) | −44° 15′ 09″ |
| Space velocity (relative to the Sun) | 125.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.07. Visible from the whole Southern Hemisphere and north to latitude 46° N. South of latitude 46° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1941. 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 WISEP J195550.11-441514.2, the Sun would look like a star of magnitude 6.90, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4119 5.50 light-years
- HIP 98813 11.5 light-years
- 2MASS J19285196-4356256 11.6 light-years
- WISEA J204928.59-443143.9 14.3 light-years
- GJ 4145 16.0 light-years
- CWISE J200121.21-413606.8 16.7 light-years
- HIP 99137 16.7 light-years
- η Ind 16.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.