HD 134060
Star in the constellation Circinus / From Wikipedia, the free encyclopedia
HD 134060, also known by its Gould designation of 38 G. Circini, is a star in the southern constellation of Circinus. It is near the lower limit of stars visible to the naked eye, having an apparent visual magnitude of 6.29.[2] The distance to HD 134060, as determined using an annual parallax shift measurement of 41.59 mas,[1] is 78.4 light years. It is moving further away with a heliocentric radial velocity of 43.5 km/s, having come within 34.6 ly some 439,000 years ago.[4]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Circinus |
Right ascension | 15h 10m 44.74390s[1] |
Declination | –61° 25′ 20.3469″[1] |
Apparent magnitude (V) | 6.29±0.01[2] |
Characteristics | |
Spectral type | G0 V Fe+0.4[3] or G3 IV[2] |
B−V color index | 0.623±0.003[4] |
Astrometry | |
Radial velocity (Rv) | 43.50±0.74[4] km/s |
Proper motion (μ) | RA: −185.615[1] mas/yr Dec.: −12.184[1] mas/yr |
Parallax (π) | 41.59 ± 0.23 mas[1] |
Distance | 78.4 ± 0.4 ly (24.0 ± 0.1 pc) |
Absolute magnitude (MV) | 4.37[4] |
Details[2] | |
Mass | 1.07±0.07 M☉ |
Radius | 1.15±0.02 R☉ |
Luminosity | 1.63[4] L☉ |
Surface gravity (log g) | 4.35±0.04 cgs |
Temperature | 5,965±50 K |
Metallicity [Fe/H] | +0.14±0.01 dex |
Rotation | 21.2±1.1 d[5] |
Rotational velocity (v sin i) | 3.21[6] km/s |
Age | 1.75[6] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
During the NStars project, Grey et al. (2006) found a stellar classification of G0 V Fe+0.4 for this star,[3] matching a Sun-like G-type main-sequence star with an overabundance of iron in its outer atmosphere. However, an older classification of G3 IV[2] is still used, which would suggest it is instead a more evolved subgiant star. HD 134060 has an estimated 1.07 times the mass of the Sun and 1.15 times the Sun's radius.[2] It is radiating 1.63[4] times the Sun's luminosity from its photosphere at an effective temperature of about 5,965 K.[2]
The survey in 2015 have ruled out the existence of any additional stellar companions at projected distances from 22 to 163 astronomical units.[8]