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[1] mas |
| Distance | 169 ± 5 ly (52 ± 2 pc) |
| Absolute magnitude (MV) | 3.882 |
| Details | |
| Mass | 1.12 ± 0.02[2] M☉ |
| Radius | 1.06 ± 0.01[2] R☉ |
| Luminosity | 1.17 ± 0.01[2] L☉ |
| Surface gravity (log g) | 4.43 ± 0.02[2] cgs |
| Temperature | 5833 ± 28[2] K |
| Metallicity | 0.31 ± 0.03 |
| Rotation | ~26.3 days |
| Age | 1.6 ± 0.9[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | 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 in 2007 using the doppler spectroscopy method.[3] In 2009, a second planet discovery was claimed based on Bayesian analysis of the original data.[4] However in 2015 additional radial velocity measurements showed that the planetary parameters were significantly different than those determined by Bayesian analysis. An additional linear trend in the radial velocities indicates a stellar or planetary companion on a long term orbit.[5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| c | ≥0.36 ± 0.02 MJ | 0.721 ± 0.001 | 223.6 ± 0.6 | 0.24 ± 0.05 | — | — |
| b | ≥4.21 ± 0.07 MJ | 2.708 ± 0.007 | 1627.5 ± 5.9 | 0.37 ± 0.01 | — | — |
References
- 1 2 3 4 5 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
- 1 2 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- ↑ 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.
- ↑ 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.
- 1 2 Giguere, Matthew J.; et al. (2015). "Newly Discovered Planets Orbiting HD 5319, HD 11506, HD 75784 and HD 10442 from the N2K Consortium". The Astrophysical Journal. 799 (1). 89. arXiv:1411.5374. Bibcode:2015ApJ...799...89G. doi:10.1088/0004-637X/799/1/89.
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