Star · K1III
ζ Aps
ζ Aps is a giant star of spectral type K1III in the constellation Apus, 293.4 light-years from the Sun.
| Other names | HIP 84969 |
|---|---|
| Constellation | Apus |
| Distance | 293.4 light-years (89.9 pc) |
| Apparent magnitude | magnitude 4.76 |
| Absolute magnitude | magnitude −0.01 |
| Spectral type | K1III |
| Surface temperature | 4,320 K |
| Luminosity | 181 L☉ |
| Radius | 24 R☉ |
| Mass | 4.01 M☉ (estimated) |
| Right ascension (J2000) | 17h 21m 59.5s |
| Declination (J2000) | −67° 46′ 14″ |
| Space velocity (relative to the Sun) | 19.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.76). Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1733. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.2 million years.
The Sun seen from there
From a planet around ζ Aps, the Sun would look like a star of magnitude 9.60, in the direction where our sky has the constellation Camelopardalis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 87142 15.2 light-years
- HIP 84248 19.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.