Star · B1IV
HIP 20234
HIP 20234 is a subgiant star of spectral type B1IV in the constellation Perseus, 1,506 light-years from the Sun.
| Constellation | Perseus |
|---|---|
| Distance | 1,506 light-years (461.8 pc) |
| Apparent magnitude | magnitude 5.55 |
| Absolute magnitude | magnitude −2.77 |
| Spectral type | B1IV |
| Surface temperature | 10,530 K |
| Luminosity | 1,650 L☉ |
| Radius | 12.2 R☉ |
| Mass | 7.54 M☉ (estimated) |
| Right ascension (J2000) | 4h 20m 11.5s |
| Declination (J2000) | +50° 55′ 15″ |
| Space velocity (relative to the Sun) | 66.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.55). Visible from the whole Northern Hemisphere and south to latitude 39° S. North of latitude 39° 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 520. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 27 million years.
The Sun seen from there
From a planet around HIP 20234, the Sun would look like a star of magnitude 13.15, in the direction where our sky has the constellation Norma. 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.