Star · G2I
104 Aqr
104 Aqr is a supergiant star of spectral type G2I in the constellation Aquarius, 713.0 light-years from the Sun.
| Other names | HIP 116901 |
|---|---|
| Constellation | Aquarius |
| Distance | 713.0 light-years (218.6 pc) |
| Apparent magnitude | magnitude 4.82 |
| Absolute magnitude | magnitude −1.88 |
| Spectral type | G2I |
| Surface temperature | 5,220 K |
| Luminosity | 609 L☉ |
| Radius | 30.2 R☉ |
| Mass | 5.67 M☉ (estimated) |
| Right ascension (J2000) | 23h 41m 45.8s |
| Declination (J2000) | −17° 48′ 59″ |
| Space velocity (relative to the Sun) | 15.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.82). Visible from the whole Southern Hemisphere and north to latitude 72° N. South of latitude 72° 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 1313. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 13 million years.
The Sun seen from there
From a planet around 104 Aqr, the Sun would look like a star of magnitude 11.53, in the direction where our sky has the constellation Leo. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.