Beta Cancri
Altarf is the proper name of the star Beta Cancri ( β Cancri ). He is a giant star of spectral type K4 ( K4IIIBa0.5 ) and has an apparent magnitude of 3.8 mag. Its distance from Earth is about 230 light-years, it is the brightest star in the constellation Cancer.
Coordinates ( equinox 2000)
- RA: 8h16m30s
- Declination: 9 ° 11'6 "
- Individual fourth star size
- Cancer ( constellation )