Star · F3V
ρ Cap
ρ Cap is a main-sequence star of spectral type F3V in the constellation Capricornus, 98.2 light-years from the Sun.
| Other names | Gl 791.1A · HIP 101027 |
|---|---|
| Constellation | Capricornus |
| Distance | 98.2 light-years (30.1 pc) |
| Apparent magnitude | magnitude 4.77 |
| Absolute magnitude | magnitude 2.38 |
| Spectral type | F3V |
| Surface temperature | 6,960 K |
| Luminosity | 9.51 L☉ |
| Radius | 2.12 R☉ |
| Mass | 1.76 M☉ (estimated) |
| Right ascension (J2000) | 20h 28m 51.6s |
| Declination (J2000) | −17° 48′ 49″ |
| Space velocity (relative to the Sun) | 18.6 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.77). 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 July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around ρ Cap, the Sun would look like a star of magnitude 7.22, in the direction where our sky has the constellation Cancer. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 791.1B 1.20 light-years
- SDSS J205235.31-160929.8 10.1 light-years
- Gl 781.2 11.1 light-years
- HIP 99550 12.2 light-years
- ξ² Cap 12.4 light-years
- GJ 4147 13.9 light-years
- Gl 781.3 14.1 light-years
- WISEA J205202.06-204313.0 14.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.