Star · F3IV
μ Cap
μ Cap is a subgiant star of spectral type F3IV in the constellation Capricornus, 87.4 light-years from the Sun.
| Other names | Gl 838.5 · HIP 108036 |
|---|---|
| Constellation | Capricornus |
| Distance | 87.4 light-years (26.8 pc) |
| Apparent magnitude | magnitude 5.08 |
| Absolute magnitude | magnitude 2.94 |
| Spectral type | F3IV |
| Surface temperature | 7,000 K |
| Luminosity | 5.66 L☉ |
| Radius | 1.62 R☉ |
| Mass | 1.54 M☉ (estimated) |
| Right ascension (J2000) | 21h 53m 17.7s |
| Declination (J2000) | −13° 33′ 06″ |
| Space velocity (relative to the Sun) | 44.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.08). 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 1939. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around μ Cap, the Sun would look like a star of magnitude 6.97, 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):
- 2MASS J21542494-1023022 4.92 light-years
- GJ 4254 5.95 light-years
- 2MASS J21324898-1452544 7.89 light-years
- 2MASSW J2130446-084520 11.1 light-years
- 2MASS J21580457-1550098 12.1 light-years
- 37 Cap 12.4 light-years
- GJ 4217 13.1 light-years
- GJ 9757 13.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.