Star · ?
GJ 3561
GJ 3561 is a main-sequence star of spectral type ? in the constellation Hydra, 76.8 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 76.8 light-years (23.5 pc) |
| Apparent magnitude | magnitude 14.00 |
| Absolute magnitude | magnitude 12.14 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00537 L☉ |
| Radius | 0.183 R☉ |
| Mass | 0.195 M☉ (estimated) |
| Right ascension (J2000) | 9h 36m 05.2s |
| Declination (J2000) | −6° 06′ 59″ |
| Space velocity (relative to the Sun) | 83.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.00. Visible from the whole Southern Hemisphere and north to latitude 84° N. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1949. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around GJ 3561, the Sun would look like a star of magnitude 6.69, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 9299 3.10 light-years
- Gl 340.3 5.57 light-years
- CWISE J095316.32-094318.9 7.70 light-years
- DENIS-P J090957.1-065806 9.71 light-years
- Gl 346 11.1 light-years
- HIP 49366 12.0 light-years
- 2MASS J09490860-1545485 13.7 light-years
- CWISE J094925.88-102601.9 13.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.