HD 154672
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ara |
| Right ascension | 17h 10m 04.911s |
| Declination | −56° 26′ 57.37″ |
| Apparent magnitude (V) | 8.22 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | G3 IV |
| B−V color index | 0.71 |
| Astrometry | |
| Proper motion (μ) | RA: +30.213 mas/yr Dec.: -124.135 mas/yr |
| Parallax (π) | 15.8188±0.0232 mas |
| Distance | 206.2 ± 0.3 ly (63.22 ± 0.09 pc) |
| Absolute magnitude (MV) | 4.12 |
| Details | |
| Mass | 1.06 +0.11 −0.09 M☉ |
| Radius | 1.27 +0.1 −0.09 R☉ |
| Luminosity | 1.88 L☉ |
| Temperature | 5714 (± 30) K |
| Metallicity | +0.26 (± 0.04) |
| Age | 9.28 +2.18 −2.36 years |
| Other designations | |
| CD−56°6711, HIP 83983, SAO 244476 | |
| Database references | |
| SIMBAD | data |
HD 154672 is a yellow subgiant (spectral type G3 IV). It is about 65 parsecs away from the Sun that is larger than, but of a similar mass to, the Sun. However, HD 154672 is much older. The star is very metal-rich, which is one of the reasons why it was targeted for a planet search by the N2K Consortium, which discovered the gas giant planet HD 154672 b using Doppler Spectroscopy; the discovery was reported in October 2008. The N2K collaboration chose HD 154672 primarily because it aimed to discover the correlation between a star's metallicity and the mass of orbiting planets.
HD 154672 was targeted by the Magellan Telescopes. It is the host of the first planet discovered from the telescopes by N2K.