HD 114386

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HD 114386
Observation data
Epoch 2000
Constellation
(pronunciation)
Centaurus
Right ascension 13h 10m 39.82s
Declination -35° 3' 17.22"
Apparent magnitude (V) 8.8
Distance 91.42 ly
(28.04 pc)
Spectral type K3V
Other designations
CD-34°8698, HIP 64295

HD 114386 is a 9th magnitude star in the constellation of Centaurus. It is an orange dwarf, and rather dim compared to our Sun. To see it, one needs a telescope or good binoculars.

In 2004, the Geneva Extrasolar Planet Search Team announced the discovery of an extrasolar planet orbiting the star.


[edit] HD 114386 b

HD 114386 b
Discovery
Discovered by Mayor et al.
Discovery date 2002
Detection method Radial velocity
Semi-major axis 1.65 AU
Eccentricity 0.23 ± 0.03
Orbital period 937.7 ± 15.6 d
Angular distance 58 mas
Longitude of periastron 273° ± 14°
Time of periastron 2,450,454 ± 43 JD
Semi-amplitude 34.3 ± 1.6 m/s
Physical characteristics
Mass >1.24 MJ

HD 114386 b is a planet orbiting the star. Its minimum mass is almost exactly the same as Jupiter. However, it is likely that the planet is actually more massive, but not by much.

The planet orbits the star in a rather eccentric orbit. Mean distance from the star is 1.62 AU, somewhat more than distance between Mars and the Sun. At periapsis, the planet comes almost as close as Earth orbits the Sun, and at apoapsis the distance is twice as much.


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