Star · A3
HIP 77370
HIP 77370 is a main-sequence star of spectral type A3 in the constellation Draco, 238.1 light-years from the Sun.
| Constellation | Draco |
|---|---|
| Distance | 238.1 light-years (73.0 pc) |
| Apparent magnitude | magnitude 5.85 |
| Absolute magnitude | magnitude 1.53 |
| Spectral type | A3 |
| Surface temperature | 7,800 K |
| Luminosity | 21.6 L☉ |
| Radius | 2.54 R☉ |
| Mass | 2.19 M☉ (estimated) |
| Right ascension (J2000) | 15h 47m 37.9s |
| Declination (J2000) | +55° 22′ 36″ |
| Space velocity (relative to the Sun) | 5.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.85). Visible from the whole Northern Hemisphere and south to latitude 35° S. North of latitude 35° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1788. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.2 million years.
The Sun seen from there
From a planet around HIP 77370, the Sun would look like a star of magnitude 9.15, in the direction where our sky has the constellation Reticulum. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J15422494+5522451 4.49 light-years
- HIP 76376 8.38 light-years
- HIP 77110 13.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.