Star · K1V
Gl 819A
Gl 819A is a main-sequence star of spectral type K1V in the constellation Aquarius, 56.7 light-years from the Sun.
| Other names | HIP 104239 |
|---|---|
| Constellation | Aquarius |
| Distance | 56.7 light-years (17.4 pc) |
| Apparent magnitude | magnitude 7.12 |
| Absolute magnitude | magnitude 5.92 |
| Spectral type | K1V |
| Surface temperature | 4,990 K |
| Luminosity | 0.506 L☉ |
| Radius | 0.95 R☉ |
| Mass | 0.843 M☉ (estimated) |
| Right ascension (J2000) | 21h 07m 10.4s |
| Declination (J2000) | −13° 55′ 23″ |
| Space velocity (relative to the Sun) | 46.0 km/s |
In the sky
Too faint for the naked eye (magnitude 7.12); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around Gl 819A, the Sun would look like a star of magnitude 6.03, in the direction where our sky has the constellation Cancer. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 819B 0.07 light-years
- 2MASSI J2104149-103736 3.35 light-years
- Gl 817 4.35 light-years
- WISEA J211456.86-180519.0 4.64 light-years
- Gl 811.1 5.78 light-years
- Gl 830 5.84 light-years
- Gl 826.1 8.21 light-years
- Gl 828.2 8.62 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.