Star · A3IV
Ascella
Ascella is a subgiant star of spectral type A3IV in the constellation Sagittarius, 88.2 light-years from the Sun.
| Other names | ζ Sgr · HIP 93506 |
|---|---|
| Constellation | Sagittarius |
| Distance | 88.2 light-years (27.0 pc) |
| Apparent magnitude | magnitude 2.60 |
| Absolute magnitude | magnitude 0.44 |
| Spectral type | A3IV |
| Surface temperature | 9,410 K |
| Luminosity | 71.9 L☉ |
| Radius | 3.19 R☉ |
| Mass | 3.08 M☉ (estimated) |
| Right ascension (J2000) | 19h 02m 36.7s |
| Declination (J2000) | −29° 52′ 48″ |
| Space velocity (relative to the Sun) | 24.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 2.60). Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1938. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around Ascella, the Sun would look like a star of magnitude 6.99, in the direction where our sky has the constellation Gemini. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 94595 6.93 light-years
- GJ 4097 7.46 light-years
- K2-129 8.40 light-years
- Gumala 10.0 light-years
- HIP 96124 10.9 light-years
- HIP 90611 11.6 light-years
- GJ 4087 12.0 light-years
- WISEA J190005.76-310810.9 12.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.