HD 11506

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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 1.19 ± 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
HIP 8770, SAO 148079, BD−20°358
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[edit]

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]

The HD 11506 planetary system[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[edit]

  1. ^ 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
  2. ^ 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. 
  3. ^ 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. 

Coordinates: Sky map 01h 52m 50.534s, −19° 30′ 25.107″