Star · A0V
101 Aqr
101 Aqr is a main-sequence star of spectral type A0V in the constellation Aquarius, 249.4 light-years from the Sun.
| Other names | HIP 116247 |
|---|---|
| Constellation | Aquarius |
| Distance | 249.4 light-years (76.5 pc) |
| Apparent magnitude | magnitude 4.70 |
| Absolute magnitude | magnitude 0.28 |
| Spectral type | A0V |
| Surface temperature | 9,880 K |
| Luminosity | 89.2 L☉ |
| Radius | 3.22 R☉ |
| Mass | 3.28 M☉ (estimated) |
| Right ascension (J2000) | 23h 33m 16.6s |
| Declination (J2000) | −20° 54′ 52″ |
| Space velocity (relative to the Sun) | 15.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.70). Visible from the whole Southern Hemisphere and north to latitude 69° N. South of latitude 69° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1777. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.4 million years.
The Sun seen from there
From a planet around 101 Aqr, the Sun would look like a star of magnitude 9.25, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 100 Aqr 10.2 light-years
- HIP 117128 13.4 light-years
- HIP 114999 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.