Rho2 Cancri
Rho2 Cancri (ρ2 Cancri) is a solitary, yellow-hued star in the constellation Cancer. With an apparent visual magnitude of 5.22, it is visible to the naked eye on a dark night. Based upon an annual parallax shift of 6.70 mas as seen from Earth, this star is located around 490 light-years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.06 due to interstellar dust.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 55m 39.68055s |
| Declination | +27° 55′ 38.9299″ |
| Apparent magnitude (V) | 5.22 |
| Characteristics | |
| Spectral type | G8 III or G8 II-III |
| U−B color index | +0.78 |
| B−V color index | +1.00 |
| Astrometry | |
| Radial velocity (Rv) | +16.3±0.3 km/s |
| Proper motion (μ) | RA: −12.24 mas/yr Dec.: −33.79 mas/yr |
| Parallax (π) | 6.70 ± 0.32 mas |
| Distance | 490 ± 20 ly (149 ± 7 pc) |
| Absolute magnitude (MV) | −1.13 |
| Details | |
| Mass | 3.59 M☉ |
| Radius | 24.2 R☉ |
| Luminosity | 310 L☉ |
| Surface gravity (log g) | 2.46 cgs |
| Temperature | 4,994 K |
| Metallicity [Fe/H] | 0.11 dex |
| Rotational velocity (v sin i) | 8.1 km/s |
| Age | 234 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
At the age of about 234 million years, is an evolved, G-type giant star with a stellar classification of G8 III. It has an estimated 3.6 times the mass of the Sun and has expanded to 24 times the Sun's radius. It is radiating 310 times the Sun's luminosity from its photosphere at an effective temperature of 4,994 K.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.