Star · G0IV
39 Ser
39 Ser is a subgiant star of spectral type G0IV in the constellation Serpens, 58.0 light-years from the Sun.
| Other names | GJ 3924 · HIP 77801 |
|---|---|
| Constellation | Serpens |
| Distance | 58.0 light-years (17.8 pc) |
| Apparent magnitude | magnitude 6.07 |
| Absolute magnitude | magnitude 4.82 |
| Spectral type | G0IV |
| Surface temperature | 5,980 K |
| Luminosity | 1.06 L☉ |
| Radius | 0.961 R☉ |
| Mass | 1.01 M☉ (estimated) |
| Right ascension (J2000) | 15h 53m 12.1s |
| Declination (J2000) | +13° 11′ 47″ |
| Space velocity (relative to the Sun) | 63.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.07). Visible from the whole Northern Hemisphere and south to latitude 77° S. North of latitude 77° 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 1968. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around 39 Ser, the Sun would look like a star of magnitude 6.08, 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):
- 2MASS J16150413+1340079 5.55 light-years
- GJ 1200 8.15 light-years
- SDSS J153453.33+121949.2 8.97 light-years
- CWISE J153347.50+175306.7 9.20 light-years
- GJ 1203 10.2 light-years
- GJ 3913 10.3 light-years
- Gl 626 10.4 light-years
- SDSS J163022.92+081822.0 10.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.