Star · G5
HIP 4786
HIP 4786 is a supergiant star of spectral type G5 in the constellation Cassiopeia, 1,621 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 1,621 light-years (497.0 pc) |
| Apparent magnitude | magnitude 6.48 |
| Absolute magnitude | magnitude −2.00 |
| Spectral type | G5 |
| Surface temperature | 4,520 K |
| Luminosity | 977 L☉ |
| Radius | 51 R☉ |
| Mass | 6.49 M☉ (estimated) |
| Right ascension (J2000) | 1h 01m 27.0s |
| Declination (J2000) | +49° 32′ 39″ |
| Space velocity (relative to the Sun) | 15.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.48). Visible from the whole Northern Hemisphere and south to latitude 40° S. North of latitude 40° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 405. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 29 million years.
The Sun seen from there
From a planet around HIP 4786, the Sun would look like a star of magnitude 13.31, in the direction where our sky has the constellation Centaurus. 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.