HD 89744 b

HD 89744 b[1]
Exoplanet List of exoplanets
Parent star
Star HD 89744
Constellation Ursa Major
Right ascension (α) 10h 11m 10.5621s
Declination (δ) +41° 13 46.308
Distance130 ly
(40 pc)
Spectral type F7V
Orbital elements
Semi-major axis(a) 0.934 ± 0.054 AU
Periastron (q) 0.302 AU
Apastron (Q) 1.566 AU
Eccentricity (e) 0.6770 ± 0.0072
Orbital period(P) 256.80 ± 0.13 d
(0.70307 y)
Orbital speed (υ) 39.7 km/s
Argument of
periastron
(ω) 194.4 ± 1.2°
Time of periastron (T0) 2,451,505.33 ± 0.39 JD
Semi-amplitude (K) 267.3 ± 5.0 m/s
Physical characteristics
Minimum mass(m sin i)8.58 ± 0.71 MJ
(2730 M)
Discovery information
Discovery date April 22, 2000
Discoverer(s) Korzennik et al.
Discovery method Doppler Spectroscopy
(Echelle)
Discovery site Whipple Observatory
Discovery status Confirmed
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 89744 b is an eccentric Jupiter extrasolar planet orbiting the star HD 89744.[2]

In a simulation of a 10 million year span, this planet swept away all test particles "except for a narrow region near the 8:3 resonance". There can be no planets in this star's habitable zone. Observation has ruled out any planet over 0.7 Jupiter mass within a year period.[3]

References

  1. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493Freely accessible. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
  2. Korzennik, Sylvain G.; et al. (2000). "A High-Eccentricity Low-Mass Companion to HD 89744". The Astrophysical Journal Letters. 533 (2): L147–L150. arXiv:astro-ph/0003045Freely accessible. Bibcode:2000ApJ...533L.147K. doi:10.1086/312611.
  3. Wittenmyer; Endl, Michael; Cochran, William D.; Levison, Harold F. (2007). "Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems". The Astronomical Journal. 134 (3): 1276–1284. arXiv:0706.1962Freely accessible. Bibcode:2007AJ....134.1276W. doi:10.1086/520880.

External links

Coordinates: 10h 11m 10.5621s, +41° 13′ 46.308″


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