Star · F2
Gl 421.1B
Gl 421.1B is a main-sequence star of spectral type F2 in the constellation Ursa Major, 126.7 light-years from the Sun.
| Other names | HIP 55043 |
|---|---|
| Constellation | Ursa Major |
| Distance | 126.7 light-years (38.8 pc) |
| Apparent magnitude | magnitude 7.90 |
| Absolute magnitude | magnitude 4.95 |
| Spectral type | F2 |
| Surface temperature | 5,960 K |
| Luminosity | 0.939 L☉ |
| Radius | 0.908 R☉ |
| Mass | 0.984 M☉ (estimated) |
| Right ascension (J2000) | 11h 16m 03.7s |
| Declination (J2000) | +52° 46′ 35″ |
| Space velocity (relative to the Sun) | 52.7 km/s |
In the sky
Too faint for the naked eye (magnitude 7.90); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 37° S. North of latitude 37° 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 1899. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around Gl 421.1B, the Sun would look like a star of magnitude 7.78, in the direction where our sky has the constellation Grus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 421.1A 0.02 light-years
- HIP 54233 7.70 light-years
- HIP 56299 11.8 light-years
- HIP 54040 13.5 light-years
- 2MASS J11533966+5032092 13.8 light-years
- HIP 55459 14.9 light-years
- GJ 3676 15.1 light-years
- WISEA J110125.95+540052.8 16.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.