HD 148156
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Norma |
| Right ascension | 16h 28m 17.284s[1] |
| Declination | –46° 19′ 03.46″[1] |
| 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: 44.88±0.94[1] mas/yr Dec.: 28.10±0.74[1] mas/yr |
| Parallax (π) | 19.38 ± 0.75 mas[1] |
| Distance | 168 ± 7 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 4.09 |
| Details | |
| Mass | 1.15 M☉ |
| Radius | 1.28±0.12 R☉ |
| Luminosity | 1.902±0.235 L☉ |
| Surface gravity (log g) | 4.31 cgs |
| Temperature | 6010±100 K |
| Metallicity | 0.29 |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 148156 is an 8th magnitude G-type main sequence star located approximately 168 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.[2]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥ 0.85+0.67 −0.05 MJ |
2.45+0.04 −0.05 |
1027±28 | 0.52+0.04 −0.09 |
— | — |
See also
References
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ^ a b Naef, D.; et al. (2010). "The HARPS search for southern extrasolar planets XXIII. 8 planetary companions to low-activity solar-type stars". Astronomy and Astrophysics. 523. A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616.
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