Star · B8V
ι Aqr
ι Aqr is a main-sequence star of spectral type B8V in the constellation Aquarius, 210.5 light-years from the Sun.
| Other names | HIP 109139 |
|---|---|
| Constellation | Aquarius |
| Distance | 210.5 light-years (64.5 pc) |
| Apparent magnitude | magnitude 4.29 |
| Absolute magnitude | magnitude 0.24 |
| Spectral type | B8V |
| Surface temperature | 11,170 K |
| Luminosity | 114 L☉ |
| Radius | 2.85 R☉ |
| Mass | 3.51 M☉ (estimated) |
| Right ascension (J2000) | 22h 06m 26.2s |
| Declination (J2000) | −13° 52′ 11″ |
| Space velocity (relative to the Sun) | 24.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.29). Visible from the whole Southern Hemisphere and north to latitude 76° N. South of latitude 76° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1815. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around ι Aqr, the Sun would look like a star of magnitude 8.88, 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):
- HIP 109941 10.4 light-years
- K2-65 13.0 light-years
- HIP 109062 15.0 light-years
- HIP 108649 15.6 light-years
- HIP 110518 16.0 light-years
- HIP 108692 18.5 light-years
- HIP 107527 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.