| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Norma |
| Right ascension | 15h 49m 37.69382s[1] |
| Declination | –49° 57′ 48.6771″[1] |
| Apparent magnitude (V) | 9.36[2] |
| Characteristics | |
| Spectral type | G5[3] |
| B−V color index | 0.935±0.005[2] |
| Astrometry | |
| Radial velocity (Rv) | 61.67±0.24[1] km/s |
| Proper motion (μ) | RA: -232.760[1] mas/yr Dec.: -92.540[1] mas/yr |
| Parallax (π) | 22.0467 ± 0.0443 mas[1] |
| Distance | 147.9 ± 0.3 ly (45.36 ± 0.09 pc) |
| Absolute magnitude (MV) | 5.89[2] |
| Details | |
| Mass | 0.86±0.02[4] M☉ |
| Radius | 0.85+0.02 −0.03[1] R☉ |
| Luminosity | 0.393±0.001[1] L☉ |
| Surface gravity (log g) | 4.68±0.09[4] cgs |
| Temperature | 4,967+88 −65[1] K |
| Metallicity [Fe/H] | 0.18±0.04[4] dex |
| Age | 5.30±4.22[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 330075 is a star in the southern constellation of Norma. It has a yellow hue and an apparent visual magnitude of 9.36,[2] which makes it too faint to be seen with the naked eye – it is visible only with telescope or powerful binoculars. Parallax measurements provide a distance estimate of 148 light years from the Sun, and it is drifting further away with a radial velocity of 62 km/s.[1] The star is estimated to have come as close as 111.5 light-years some 409 million years ago.[2]
This object appears to be a slightly evolved dwarf with a spectral class of G5. That is, it is nearing the end of its main sequence lifetimes and is becoming a subgiant star. The star has very low chromospheric activity and is around five billion years old.[3] It is smaller than the Sun with 86%[4] of the Sun's mass and 85%[1] of the solar radius. As a consequence, it is radiating just 39% of the luminosity of the Sun from its photosphere at an effective temperature of 4,967 K.[1] It has a super-solar metallicity, which means the abundance of elements other than hydrogen and helium appears much higher than in the Sun.[4]
GaiaDR2 was invoked but never defined (see the help page).Anderson2012 was invoked but never defined (see the help page).Pepe2004 was invoked but never defined (see the help page).Maldonado2018 was invoked but never defined (see the help page).SIMBAD was invoked but never defined (see the help page).