Star · M0III
HIP 20417
HIP 20417 is a giant star of spectral type M0III in the constellation Taurus, 1,601 light-years from the Sun.
| Constellation | Taurus |
|---|---|
| Distance | 1,601 light-years (490.9 pc) |
| Apparent magnitude | magnitude 5.91 |
| Absolute magnitude | magnitude −2.55 |
| Spectral type | M0III |
| Surface temperature | 3,570 K |
| Luminosity | 4,570 L☉ |
| Radius | 177 R☉ |
| Mass | 10.1 M☉ (estimated) |
| Right ascension (J2000) | 4h 22m 22.7s |
| Declination (J2000) | +20° 49′ 16″ |
| Space velocity (relative to the Sun) | 10.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.91). Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° 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 425. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 28 million years.
The Sun seen from there
From a planet around HIP 20417, the Sun would look like a star of magnitude 13.29, in the direction where our sky has the constellation Scorpius. 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.