| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Norma |
| Right ascension | 16h 28m 17.2832s |
| Declination | –46° 19′ 03.445″ |
| Apparent magnitude (V) | 7.71 |
| Characteristics | |
| Spectral type | G1V |
| Apparent magnitude (B) | 8.22 |
| Apparent magnitude (J) | 6.688 |
| Apparent magnitude (H) | 6.489 |
| Apparent magnitude (K) | 6.397 |
| B−V color index | 0.51 |
| Astrometry | |
| Radial velocity (Rv) | –2.0 km/s |
| Proper motion (μ) | RA: 43.93 mas/yr Dec.: 29.74 mas/yr |
| Parallax (π) | 18.85 ± 1.03 mas |
| Distance | 173 ± 9 ly (53 ± 3 pc) |
| Absolute magnitude (MV) | 4.09 |
| Details | |
| Mass | 1.15 M☉ |
| Radius | 1.28 ± 0.12 R☉ |
| Surface gravity (log g) | 4.31 |
| Luminosity | 1.902 ± 0.235 L☉ |
| Temperature | 6010 ± 100 K |
| Metallicity | 0.29 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| NStED | data |
| Extrasolar Planets Encyclopaedia |
data |
HD 148156 is an 8th magnitude G-type main sequence star located approximately 179 light years away in the constellation Norma. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content almost twice as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity |
|---|---|---|---|---|
| b | ≥0.85+0.67 −0.05 MJ |
2.45+0.04 −0.05 |
1027 ± 28 | 0.52+0.04 −0.09 |