HD 121504

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HD 121504
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 13h 57m 17.2375s
Declination –56° 02′ 24.153″
Apparent magnitude (V) 7.6
Distance 144.6 ly
(44.57 pc)
Spectral type G2V
Other designations
CD-55°5427, GC 18842, HIP 68162

LTT 5432, NLTT 35734, SAO 241321

Database references
Extrasolar Planets

HD 121504 is an 8th magnitude star in the constellation of Centaurus. It is a yellow dwarf (spectral type G2V) and remarkably similar to our Sun, only slightly brighter like α Centauri A. However, it is located at a distance for about 140 light years and thus is not visible to the unaided eye; binoculars or small telescope is required to see this star.

Another component, designated as SAO 241323 has been proposed as a component of the system. However, the star is an optical binary component and in reality is a white giant star located thousands of light years away.

In 2000 the Geneva Extrasolar Planet Search Team announced the discovery of an extrasolar planet orbiting the star.[1]

The HD 121504 planetary system[2]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b >1.22 MJ 0.33 63.33 ± 0.03 0.03 ± 0.01

See also[edit]


External links[edit]

Coordinates: Sky map 13h 57m 17.2375s, −56° 02′ 24.153″