80 Cancer ( lat. 80 Cancri ) - a double star , which is located in the constellation Cancer at a distance of 470 light years. The main component, 80 of Cancer A , is a white hot Class A star whose luminosity is almost 32 times that of the Sun. The mass of the star is 2.6 times more massive than the Sun , the radius is 1.9 times greater than the solar. The surface temperature is hot up to 10,000 Kelvin. The system is very slowly moving away from the Earth, at a speed of 1 km / s.
| 80 cancer | |||
|---|---|---|---|
| Star | |||
| Observational data ( Age J2000.0) | |||
| Right ascension | |||
| Declination | |||
| Distance | 470 St. years (144.1 pc ) | ||
| Visible magnitude ( V ) | 6.86 | ||
| Constellation | Crayfish | ||
| Astrometry | |||
| Radial velocity ( R v ) | +1 km / s | ||
| Own movement (μ) | RA: -35.68 mas per year Dec: -22.50 mas per year | ||
| Parallax (π) | 6.94 ± 0.92 mas | ||
| Absolute magnitude (V) | +1.07 | ||
| Specifications | |||
| Spectral class | A0 | ||
| physical characteristics | |||
| Weight | 2.6 M ☉ | ||
| Radius | 1.9 R ☉ | ||
| Temperature | 9950 ± 50 K | ||
| Luminosity | 31.9 L ☉ | ||
| Metallicity | [M / H] =? | ||
| |||
| Database Information | |||
| SIMBAD | |||
See also
- Cancer constellation star list