HD 11506
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 52m 50.53s[1] |
| Declination | −19° 30′ 25.1″[1] |
| Apparent magnitude (V) | 7.537 |
| Characteristics | |
| Spectral type | G0V |
| B−V color index | 0.538 |
| Astrometry | |
| Radial velocity (Rv) | −8.1 km/s |
| Proper motion (μ) | RA: 22.87 ± 0.46[1] mas/yr Dec.: −98.85 ± 0.35[1] mas/yr |
| Parallax (π) | 19.34 ± 0.58 mas[1] |
| Distance | 169 ± 5 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 3.882 |
| Details | |
| Mass | 1.19 ± 0.1 M☉ |
| Radius | 1.38 ± 0.15 R☉ |
| Luminosity | 2.29 L☉ |
| Surface gravity (log g) | 4.28 cgs |
| Temperature | 6058 ± 51 K |
| Metallicity | 0.31 ± 0.03 |
| Rotation | ~26.3 days |
| Age | 5.4 ± 1.6 years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 11506 is a yellow dwarf star in the constellation Cetus. It is 8th magnitude and about 169 ly away.
Planetary system
The superjovian planet HD 11506 b was discovered orbiting the star by the N2K Consortium using the doppler spectroscopy method. This planet was announced by Debra Fischer in the United States in 2007.[2] In 2009, the second planet HD 11506 c was discovered by using Bayesian analysis.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| c | ≥0.82+0.31 −0.5 MJ |
0.639+0.007 −0.017 |
170.46+4 −6 |
0.42+0.2 −0.42 |
— | — |
| b | ≥3.44+0.9 −0.47 MJ |
2.43+0.24 −0.12 |
1270+200 −95 |
0.22+0.25 −0.12 |
— | — |
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
- ^ Fischer, Debra A.; et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal. 669 (2): 1336–1344. arXiv:0704.1191. Bibcode:2007ApJ...669.1336F. doi:10.1086/521869.
- ^ a b Tuomi, M.; Kotiranta, S. (2009). "Bayesian analysis of the radial velocities of HD 11506 reveals another planetary companion". Astronomy and Astrophysics. 496 (2): L13–L16. arXiv:0902.2997. Bibcode:2009A&A...496L..13T. doi:10.1051/0004-6361/200811531.
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