Star · M4V
SIMP J04175143-1838320
SIMP J04175143-1838320 is a main-sequence star of spectral type M4V in the constellation Eridanus, 133.7 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 133.7 light-years (41.0 pc) |
| Apparent magnitude | magnitude 21.83 |
| Absolute magnitude | magnitude 18.77 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.89 × 10⁻⁵ L☉ |
| Radius | 0.0263 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 4h 17m 51.5s |
| Declination (J2000) | −18° 38′ 32″ |
| Space velocity (relative to the Sun) | 37.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.83. Visible from the whole Southern Hemisphere and north to latitude 71° N. South of latitude 71° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1892. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around SIMP J04175143-1838320, the Sun would look like a star of magnitude 7.89, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J041353.96-202320.3 7.93 light-years
- HIP 20342 9.70 light-years
- HIP 19410 10.5 light-years
- HIP 19510 12.2 light-years
- HIP 21222 13.4 light-years
- HIP 20338 13.9 light-years
- HIP 18918 14.2 light-years
- HIP 17852 16.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.