Star · K5
GJ 3299A
GJ 3299A is a main-sequence star of spectral type K5 in the constellation Perseus, 121.6 light-years from the Sun.
| Other names | HIP 21352 |
|---|---|
| Constellation | Perseus |
| Distance | 121.6 light-years (37.3 pc) |
| Apparent magnitude | magnitude 8.91 |
| Absolute magnitude | magnitude 6.05 |
| Spectral type | K5 |
| Surface temperature | 4,850 K |
| Luminosity | 0.479 L☉ |
| Radius | 0.979 R☉ |
| Mass | 0.832 M☉ (estimated) |
| Right ascension (J2000) | 4h 34m 53.1s |
| Declination (J2000) | +39° 08′ 30″ |
| Space velocity (relative to the Sun) | 22.3 km/s |
In the sky
Too faint for the naked eye (magnitude 8.91); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1904. 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 GJ 3299A, the Sun would look like a star of magnitude 7.69, in the direction where our sky has the constellation Scorpius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- TOI-1685 8.37 light-years
- HIP 21559 13.1 light-years
- HIP 21197 14.1 light-years
- PSO J071.4708+36.4930 15.6 light-years
- HIP 19416 15.9 light-years
- HIP 18986 16.2 light-years
- HIP 19143 18.1 light-years
- HIP 21847 18.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.