Star · K0III
Asellus Australis
Asellus Australis is a giant star of spectral type K0III in the constellation Cancer, 136.9 light-years from the Sun.
| Other names | δ Cnc · HIP 42911 |
|---|---|
| Constellation | Cancer |
| Distance | 136.9 light-years (42.0 pc) |
| Apparent magnitude | magnitude 3.94 |
| Absolute magnitude | magnitude 0.83 |
| Spectral type | K0III |
| Surface temperature | 4,550 K |
| Luminosity | 70.5 L☉ |
| Radius | 13.5 R☉ |
| Mass | 3.06 M☉ (estimated) |
| Right ascension (J2000) | 8h 44m 41.1s |
| Declination (J2000) | +18° 09′ 15″ |
| Space velocity (relative to the Sun) | 48.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 3.94). Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1889. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.4 million years.
The Sun seen from there
From a planet around Asellus Australis, the Sun would look like a star of magnitude 7.94, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 54 Cnc 9.35 light-years
- SDSS J082642.65+193922.0 10.9 light-years
- SDSS J085805.47+221457.8 13.4 light-years
- SDSS J081757.49+182405.0 15.5 light-years
- HIP 42253 15.5 light-years
- HIP 44586 16.1 light-years
- 25 Cnc 16.3 light-years
- HIP 42703 17.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.