Star · M4V
SDSS J160140.86+215945.4
SDSS J160140.86+215945.4 is a main-sequence star of spectral type M4V in the constellation Serpens, 244.6 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 244.6 light-years (75.0 pc) |
| Apparent magnitude | magnitude 21.77 |
| Absolute magnitude | magnitude 17.39 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.73 × 10⁻⁴ L☉ |
| Radius | 0.0495 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 01m 40.9s |
| Declination (J2000) | +21° 59′ 45″ |
| Space velocity (relative to the Sun) | 55.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.77. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1781. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around SDSS J160140.86+215945.4, the Sun would look like a star of magnitude 9.21, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J155438.45+193906.7 13.9 light-years
- HIP 78916 14.9 light-years
- HIP 77247 18.0 light-years
- HIP 77868 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.