Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Lynx |
Right ascension | 09h35m 03.83005s[1] |
Declination | +39° 37′ 17.3743″[1] |
Apparent magnitude (V) | 4.81[2] |
Characteristics | |
Spectral type | G9.5 IIIb Fe-1[3] |
B−V color index | 0.980[4] |
Astrometry | |
Radial velocity (Rv) | 0.992±0.002[2] km/s |
Proper motion (μ) | RA: −30.124[1] mas/yr Dec.: +20.155[1] mas/yr |
Parallax (π) | 14.6281 ± 0.2230 mas[1] |
Distance | 223 ± 3 ly (68 ± 1 pc) |
Absolute magnitude (MV) | 0.573[4] |
Details | |
Mass | 1.62[5] M☉ |
Radius | 11[6] R☉ |
Luminosity | 58.9[5] L☉ |
Surface gravity (log g) | 2.6[6] cgs |
Temperature | 4,809±51[5] K |
Metallicity [Fe/H] | −0.18[4] dex |
Rotational velocity (v sin i) | 1.0[6] km/s |
Age | 2.74[5] Gyr |
Other designations | |
BD+40° 2224, FK5 2762, HD 82741, HIP 47029, HR 3809, SAO 61578[7] | |
Database references | |
SIMBAD | data |
HD 82741 is a single[8] star in the northern constellationofLynx. It is visible to the naked eye with an apparent visual magnitude of 4.81.[2] The distance to HD 82741 is 223 light years, as determined from its annual parallax shiftof14.6 mas.[1] It is moving further from the Earth with a heliocentric radial velocity of 1 km/s.[2]
At the age of 2.74[5] billion years, this is an evolved giant star with a stellar classificationofG9.5 IIIb Fe-1,[3] where the suffix notation indicates an underabundance of iron in its atmosphere. It belongs to a sub-category of giants called the red clump, indicating that it is on the horizontal branch and is generating energy through the fusion of helium at its core.[9] With 1.62[5] times the mass of the Sun, it has expanded to 11[6] times the Sun's radius. It is radiating 58.9[5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,809 K.[5]