Star · A4III
61 Ser
61 Ser is a giant star of spectral type A4III in the constellation Serpens, 658.9 light-years from the Sun.
| Other names | HIP 90844 |
|---|---|
| Constellation | Serpens |
| Distance | 658.9 light-years (202.0 pc) |
| Apparent magnitude | magnitude 5.93 |
| Absolute magnitude | magnitude −0.60 |
| Spectral type | A4III |
| Surface temperature | 8,400 K |
| Luminosity | 163 L☉ |
| Radius | 6.03 R☉ |
| Mass | 3.9 M☉ (estimated) |
| Right ascension (J2000) | 18h 31m 57.0s |
| Declination (J2000) | −1° 00′ 11″ |
| Space velocity (relative to the Sun) | 24.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.93). Visible from the whole Southern Hemisphere and north to latitude 89° N. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1367. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around 61 Ser, the Sun would look like a star of magnitude 11.36, in the direction where our sky has the constellation Monoceros. 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.