HD 330075
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Norma |
| Right ascension | 15h 49m 37.69382s |
| Declination | –49° 57′ 48.6771″ |
| Apparent magnitude (V) | 9.36 |
| Characteristics | |
| Spectral type | G5 |
| B−V color index | 0.935±0.005 |
| Astrometry | |
| Radial velocity (Rv) | 61.67±0.24 km/s |
| Proper motion (μ) | RA: -232.760 mas/yr Dec.: -92.540 mas/yr |
| Parallax (π) | 22.0467±0.0443 mas |
| Distance | 147.9 ± 0.3 ly (45.36 ± 0.09 pc) |
| Absolute magnitude (MV) | 5.89 |
| Details | |
| Mass | 0.86±0.02 M☉ |
| Radius | 0.85+0.02 −0.03 R☉ |
| Luminosity | 0.393±0.001 L☉ |
| Surface gravity (log g) | 4.68±0.09 cgs |
| Temperature | 4,967+88 −65 K |
| Metallicity [Fe/H] | 0.18±0.04 dex |
| Age | 5.30±4.22 Gyr |
| Other designations | |
| CD−49°10033, Gaia DR2 5982775854377691136, HD 330075, HIP 77517, SAO 226248, PPM 321068, LTT 6312, NLTT 41237, 2MASS J15493770-4957486 | |
| 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, 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. The star is estimated to have come as close as 111.5 light-years some 409 million years ago.
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. It is smaller than the Sun with 86% of the Sun's mass and 85% 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. It has a super-solar metallicity, which means the abundance of elements other than hydrogen and helium appears much higher than in the Sun.