Star · M1
GJ 3649
GJ 3649 is a main-sequence star of spectral type M1 in the constellation Leo, 54.4 light-years from the Sun.
| Constellation | Leo |
|---|---|
| Distance | 54.4 light-years (16.7 pc) |
| Apparent magnitude | magnitude 10.77 |
| Absolute magnitude | magnitude 9.66 |
| Spectral type | M1 |
| Surface temperature | 3,790 K |
| Luminosity | 0.0431 L☉ |
| Radius | 0.481 R☉ |
| Mass | 0.456 M☉ (estimated) |
| Right ascension (J2000) | 11h 12m 39.0s |
| Declination (J2000) | +18° 56′ 05″ |
| Space velocity (relative to the Sun) | 31.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.77. Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° 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 1972. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 966 thousand years.
The Sun seen from there
From a planet around GJ 3649, the Sun would look like a star of magnitude 5.94, in the direction where our sky has the constellation Aquarius. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Zosma 4.30 light-years
- 2MASSI J1104012+195921 4.71 light-years
- Gl 430.1 6.08 light-years
- GJ 3652 6.14 light-years
- GJ 3657 7.07 light-years
- Gl 427 7.27 light-years
- SDSS J104335.08+121314.1 9.20 light-years
- GJ 3643 9.50 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.