Star · B3V
HIP 101909
HIP 101909 is a main-sequence star of spectral type B3V in the constellation Delphinus, 1,045 light-years from the Sun.
| Constellation | Delphinus |
|---|---|
| Distance | 1,045 light-years (320.4 pc) |
| Apparent magnitude | magnitude 5.99 |
| Absolute magnitude | magnitude −1.54 |
| Spectral type | B3V |
| Surface temperature | 12,390 K |
| Luminosity | 718 L☉ |
| Radius | 5.81 R☉ |
| Mass | 5.95 M☉ (estimated) |
| Right ascension (J2000) | 20h 39m 05.0s |
| Declination (J2000) | +15° 50′ 17″ |
| Space velocity (relative to the Sun) | 23.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.99). Visible from the whole Northern Hemisphere and south to latitude 74° S. North of latitude 74° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 981. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 19 million years.
The Sun seen from there
From a planet around HIP 101909, the Sun would look like a star of magnitude 12.36, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.