- HD 89744
Starbox short
name = HD 89744
epoch =J2000.0
constell =Ursa Major
ra = 10h 22m 10.5621s
dec = +41° 13' 46.308"
appmag_v = 6
dist_ly = 130
dist_pc = 40
spectral = F7V
names = HIP 50786HD 89744 is an F-dwarf star about 130 ly. away in the
constellation Ursa Major .HD 89744 b
Planetbox begin
name = HD 89744 b [cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=TheAstrophysical Journal | volume=646 | issue=1 | pages=505 – 522 | year=2006 | doi=10.1086/504701 ( [http://xxx.lanl.gov/abs/astro-ph/0607493 web Preprint] )] Planetbox orbit
semimajor = 0.934 ± 0.054
eccentricity = 0.6770 ± 0.0072
period = 256.80 ± 0.13
ang_dist = 22
long_peri = 194.4 ± 1.2
t_peri = 2,451,505.33 ± 0.39
semi-amp = 267.3 ± 5.0 Planetbox character
mass = >8.58 ± 0.71Planetbox discovery
discovery_date = 2000
discoverers = Korzennik et al.
discovery_method = Doppler Spectroscopy
discovery_status = ConfirmedHD 89744 b is an
eccentric Jupiter extrasolar planet orbiting HD 89744. [cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/312611 | author=Korzennik "et al." | title=A High-Eccentricity Low-Mass Companion to HD 89744 | journal=TheAstrophysical Journal | year=2000 | volume=533 | issue=2 | pages=L147 – L150 | doi=10.1086/312611 ]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. [cite journal | author=WITTENMYER R., ENDL M., COCHRAN W. & LEVISON H. | year=2007 |title=Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems | journal=Astronomical Journal | volume=134 | url=http://arxiv.org/abs/0706.1962v1 | page=1276]
References
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