Star · M1III
HIP 104872
HIP 104872 is a giant star of spectral type M1III in the constellation Aquarius, 946.2 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 946.2 light-years (290.1 pc) |
| Apparent magnitude | magnitude 6.38 |
| Absolute magnitude | magnitude −0.93 |
| Spectral type | M1III |
| Surface temperature | 3,690 K |
| Luminosity | 864 L☉ |
| Radius | 72.1 R☉ |
| Mass | 6.27 M☉ (estimated) |
| Right ascension (J2000) | 21h 14m 37.0s |
| Declination (J2000) | +0° 05′ 32″ |
| Space velocity (relative to the Sun) | 134.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.38). Visible from the whole Southern Hemisphere and north to latitude 90° N. 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 1080. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 17 million years.
The Sun seen from there
From a planet around HIP 104872, the Sun would look like a star of magnitude 12.14, in the direction where our sky has the constellation Hydra. 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.