Star · M9
GJ 9520
GJ 9520 is a main-sequence star of spectral type M9 in the constellation Serpens, 37.4 light-years from the Sun.
| Other names | HIP 75187 |
|---|---|
| Constellation | Serpens |
| Distance | 37.4 light-years (11.5 pc) |
| Apparent magnitude | magnitude 10.66 |
| Absolute magnitude | magnitude 10.37 |
| Spectral type | M9 |
| Surface temperature | 3,070 K |
| Luminosity | 0.0872 L☉ |
| Radius | 1.04 R☉ |
| Mass | 0.543 M☉ (estimated) |
| Right ascension (J2000) | 15h 21m 52.9s |
| Declination (J2000) | +20° 58′ 40″ |
| Space velocity (relative to the Sun) | 9.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.66. Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° 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 1989. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 663 thousand years.
The Sun seen from there
From a planet around GJ 9520, the Sun would look like a star of magnitude 5.12, in the direction where our sky has the constellation Eridanus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Ross 508 2.41 light-years
- WISE J154214.00+223005.2 3.61 light-years
- Gl 568A 4.54 light-years
- Gl 567 4.59 light-years
- Gl 568B 4.59 light-years
- 2MASSW J1506544+132106 5.61 light-years
- γ Ser 6.35 light-years
- Gl 569A 6.95 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.