Star · G5III
39 Cet
39 Cet is a giant star of spectral type G5III in the constellation Cetus, 244.1 light-years from the Sun.
| Other names | HIP 5951 |
|---|---|
| Constellation | Cetus |
| Distance | 244.1 light-years (74.8 pc) |
| Apparent magnitude | magnitude 5.42 |
| Absolute magnitude | magnitude 1.05 |
| Spectral type | G5III |
| Surface temperature | 5,030 K |
| Luminosity | 44.2 L☉ |
| Radius | 8.76 R☉ |
| Mass | 2.68 M☉ (estimated) |
| Right ascension (J2000) | 1h 16m 36.3s |
| Declination (J2000) | −2° 30′ 01″ |
| Space velocity (relative to the Sun) | 50.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.42). Visible from the whole Southern Hemisphere and north to latitude 87° N. 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 1782. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around 39 Cet, the Sun would look like a star of magnitude 9.20, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ULAS J011151.89-010534.2 7.86 light-years
- HIP 6605 9.12 light-years
- HIP 5945 10.3 light-years
- HIP 5845 15.6 light-years
- ULAS J013117.53-003128.6 17.8 light-years
- HIP 5754 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.