Star · M2
Gl 420B
Gl 420B is a main-sequence star of spectral type M2 in the constellation Draco, 47.2 light-years from the Sun.
| Constellation | Draco |
|---|---|
| Distance | 47.2 light-years (14.5 pc) |
| Apparent magnitude | magnitude 11.40 |
| Absolute magnitude | magnitude 10.60 |
| Spectral type | M2 |
| Surface temperature | 3,890 K |
| Luminosity | 0.0161 L☉ |
| Radius | 0.28 R☉ |
| Mass | 0.315 M☉ (estimated) |
| Right ascension (J2000) | 11h 15m 11.9s |
| Declination (J2000) | +73° 28′ 35″ |
| Space velocity (relative to the Sun) | 28.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.40. Visible from the whole Northern Hemisphere and south to latitude 17° S. North of latitude 17° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1979. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 837 thousand years.
The Sun seen from there
From a planet around Gl 420B, the Sun would look like a star of magnitude 5.63, in the direction where our sky has the constellation Indus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 420A 0.00 light-years
- GJ 3704 5.70 light-years
- WISEA J125721.01+715349.3 6.80 light-years
- GJ 3612 6.90 light-years
- Gl 366 6.93 light-years
- GJ 3550 7.06 light-years
- 2MASSW J1108307+683017 7.10 light-years
- GJ 3520 7.92 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.