HD 121504

from Wikipedia, the free encyclopedia
Stern
HD 121504
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation centaur
Right ascension 13 h 57 m 17.24 s
declination −56 ° 02 ′ 24.2 ″
Apparent brightness 7.52 mag
Typing
Known exoplanets 1
B − V color index +0.59 
Spectral class G2 V
Astrometry
parallax 23.98 ± 0.04  mas
distance 135.9 ± 0.2  ly
41.7  pc
Physical Properties
Dimensions 1.18  M ☉
Effective temperature 6075  K
Metallicity [Fe / H] +0.16
Rotation time 8.6 days
Age 1.6 billion  a
Other names
and catalog entries
Cordoba Survey CD −55 ° 5427
Henry Draper Catalog HD 121504 [1]
Hipparcos catalog HIP 68162 [2]
SAO catalog SAO 241321 [3]
Tycho catalog TYC 8668-674-1 [4]
2MASS catalog 2MASS J13571724-5602242 [5]

HD 121504 is a star that is almost 140  light-years from Earth and has an exoplanet with the systematic name HD 121504 b . The star is classified with the spectral class G2V and, according to initial estimates, has about the same mass as the sun . The apparent magnitude of the star is 7.5 mag. He is located in the constellation Centaurus .

The exoplanet

The exact mass of the exoplanet HD 121504 b is not yet known, so the minimum mass given an unknown system inclination as mass, it is 0.82  Jupiter masses . The mean distance to the orbiting object is 0.32  astronomical units , the planet needs about 65 days for one orbit .

The exoplanet was discovered by measuring the radial velocity of the star using the CORALIE spectrometer and the 1.2 meter reflector at the La Silla Observatory . The findings were made by Queloz et al. presented at an IAU symposium in August 2000 .

literature

Individual evidence

  1. ↑ a b c d e HD 121504. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed August 26, 2018 .
  2. ↑ a b c d e Planet HD 121504 b. In: Extrasolar Planets Encyclopaedia . Retrieved August 26, 2018 .
  3. ↑ HD 121504, HIP68162. In: Universe Guide. Retrieved August 26, 2018 .