Star · M4III
HIP 20075
HIP 20075 is a giant star of spectral type M4III in the constellation Eridanus, 1,011 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 1,011 light-years (310.0 pc) |
| Apparent magnitude | magnitude 6.00 |
| Absolute magnitude | magnitude −1.46 |
| Spectral type | M4III |
| Surface temperature | 3,650 K |
| Luminosity | 1,470 L☉ |
| Radius | 95.7 R☉ |
| Mass | 7.3 M☉ (estimated) |
| Right ascension (J2000) | 4h 18m 16.1s |
| Declination (J2000) | −20° 42′ 55″ |
| Space velocity (relative to the Sun) | 39.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.00). Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° S 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 1015. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 18 million years.
The Sun seen from there
From a planet around HIP 20075, the Sun would look like a star of magnitude 12.29, in the direction where our sky has the constellation Hercules. 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.