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 | |
| Database references | |
| SIMBAD | data |
| Extrasolar Planets Encyclopaedia | data |
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]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.22 MJ | 0.33 | 63.33 ± 0.03 | 0.03 ± 0.01 | — | — |
See also
References
- ↑ "European Southern Observatory: Six Extrasolar Planets Discovered". SpaceRef Interactive Inc. 7 August 2000. Retrieved 15 August 2009.
- ↑ Mayor, M.; et al. (2004). "The CORALIE survey for southern extra-solar planets XII. Orbital solutions for 16 extra-solar planets discovered with CORALIE". Astronomy and Astrophysics. 415 (1): 391–402. arXiv:astro-ph/0310316
. Bibcode:2004A&A...415..391M. doi:10.1051/0004-6361:20034250.
External links
Coordinates: 
13h 57m 17.2375s, −56° 02′ 24.153″
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