Star · B6III
HIP 99929
HIP 99929 is a giant star of spectral type B6III in the constellation Cygnus, 1,414 light-years from the Sun.
| Constellation | Cygnus |
|---|---|
| Distance | 1,414 light-years (433.5 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude −1.72 |
| Spectral type | B6III |
| Surface temperature | 11,520 K |
| Luminosity | 732 L☉ |
| Radius | 6.79 R☉ |
| Mass | 5.98 M☉ (estimated) |
| Right ascension (J2000) | 20h 16m 28.2s |
| Declination (J2000) | +37° 03′ 23″ |
| Space velocity (relative to the Sun) | 9.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Northern Hemisphere and south to latitude 53° S. North of latitude 53° 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 612. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 25 million years.
The Sun seen from there
From a planet around HIP 99929, the Sun would look like a star of magnitude 13.02, in the direction where our sky has the constellation Puppis. 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.