Star · M4
GJ 3654
GJ 3654 is a main-sequence star of spectral type M4 in the constellation Hydra, 45.7 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 45.7 light-years (14.0 pc) |
| Apparent magnitude | magnitude 13.70 |
| Absolute magnitude | magnitude 12.97 |
| Spectral type | M4 |
| Surface temperature | 3,820 K |
| Luminosity | 0.00197 L☉ |
| Radius | 0.101 R☉ |
| Mass | 0.126 M☉ (estimated) |
| Right ascension (J2000) | 11h 16m 38.1s |
| Declination (J2000) | −27° 57′ 21″ |
| Space velocity (relative to the Sun) | 62.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.70. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S 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 1980. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 811 thousand years.
The Sun seen from there
From a planet around GJ 3654, the Sun would look like a star of magnitude 5.56, in the direction where our sky has the constellation Pegasus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 425A 6.06 light-years
- 2MASS J11220826-3512363 6.18 light-years
- Gl 425B 6.54 light-years
- HIP 52596 7.48 light-years
- GJ 3692 8.28 light-years
- WISE J105257.95-194250.2 8.34 light-years
- WISE J105130.01-213859.7 8.81 light-years
- GJ 3614 9.00 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.