Star · M4
Gl 490B
Gl 490B is a main-sequence star of spectral type M4 in the constellation Canes Venatici, 65.8 light-years from the Sun.
| Constellation | Canes Venatici |
|---|---|
| Distance | 65.8 light-years (20.2 pc) |
| Apparent magnitude | magnitude 13.20 |
| Absolute magnitude | magnitude 11.68 |
| Spectral type | M4 |
| Surface temperature | 3,590 K |
| Luminosity | 0.00899 L☉ |
| Radius | 0.244 R☉ |
| Mass | 0.244 M☉ (estimated) |
| Right ascension (J2000) | 12h 57m 39.5s |
| Declination (J2000) | +35° 13′ 21″ |
| Space velocity (relative to the Sun) | 31.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.20. Visible from the whole Northern Hemisphere and south to latitude 55° S. North of latitude 55° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1960. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around Gl 490B, the Sun would look like a star of magnitude 6.35, in the direction where our sky has the constellation Sculptor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 490A 7.70 light-years
- GJ 3766 9.41 light-years
- GJ 9448B 9.75 light-years
- 10 CVn 9.98 light-years
- 2MASSW J1246467+402715 9.99 light-years
- WISE J125715.90+400854.2 10.2 light-years
- SDSS J121951.45+312849.4 10.3 light-years
- Gl 509B 11.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.