HD 100777 b

HD 100777 b
Exoplanet List of exoplanets
Parent star
Star HD 100777
Constellation Leo
Right ascension (α) 11h 35m 51.5234s
Declination (δ) −04° 45 20.509
Distance172.2 ly
(52.8 pc)
Spectral type K0IV
Orbital elements
Semi-major axis(a) 1.03 ± 0.03 AU
Periastron (q) 0.659 AU
Apastron (Q) 1.40 AU
Eccentricity (e) 0.36 ± 0.02
Orbital period(P) 383.7 ± 1.2 d
(1.050 y)
Orbital speed (υ) 29.3 km/s
Argument of
periastron
(ω) 202.7 ± 3.0°
Time of periastron (T0) 2,453,456.2 ± 2.3 JD
Semi-amplitude (K) 34.9 ± 0.8 m/s
Physical characteristics
Mass(m)>1.17 ± 0.02 MJ
Discovery information
Discovery date March 5, 2007
Discoverer(s) Naef et al.[1]
Discovery method HARPS
Discovery site Chile
Discovery status Published[1]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 100777 b is an extrasolar planet located approximately 172 light-years away in the constellation of Leo, orbiting the star HD 100777. This is a >1.17 MJ planet taking 33.15 Ms to orbit at 154.1 Gm or 4.99 μpc from the star at 36% eccentricity. The velocity of the orbit is 29.3 km/s. Dominique Naef discovered this planet in March 2007 by using HARPS spectrograph located in Chile.[1]

See also

References

External links

Coordinates: 11h 35m 51.5234s, −04° 45′ 20.509″


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