Star · G8I
HIP 118077
HIP 118077 is a supergiant star of spectral type G8I in the constellation Cassiopeia, 207.5 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 207.5 light-years (63.6 pc) |
| Apparent magnitude | magnitude 5.57 |
| Absolute magnitude | magnitude 1.55 |
| Spectral type | G8I |
| Surface temperature | 6,490 K |
| Luminosity | 20.5 L☉ |
| Radius | 3.58 R☉ |
| Mass | 2.15 M☉ (estimated) |
| Right ascension (J2000) | 23h 57m 08.5s |
| Declination (J2000) | +55° 42′ 20″ |
| Space velocity (relative to the Sun) | 14.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.57). Visible from the whole Northern Hemisphere and south to latitude 34° S. North of latitude 34° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1818. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around HIP 118077, the Sun would look like a star of magnitude 8.85, in the direction where our sky has the constellation Crux. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 116139 15.2 light-years
- HIP 246 15.8 light-years
- HD 220842 16.6 light-years
- HIP 352 19.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.