HD 129445

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HD 129445
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Circinus
Right ascension 14h 46m 03.064s[1]
Declination –68° 45′ 45.89″[1]
Apparent magnitude (V) 8.8
Characteristics
Spectral type G6V
Apparent magnitude (B) 9.6
Apparent magnitude (J) 7.531
Apparent magnitude (H) 7.243
Apparent magnitude (K) 7.167
B−V color index 0.8
Variable type none
Astrometry
Radial velocity (Rv) +7.5 km/s
Proper motion (μ) RA: –198.45 ± 0.82[1] mas/yr
Dec.: –58.57 ± 1.02[1] mas/yr
Parallax (π) 15.26 ± 1.10[1] mas
Distance 210 ± 20 ly
(66 ± 5 pc)
Absolute magnitude (MV) 4.7
Details
Mass 0.99 M
Metallicity 0.25
Other designations
CD–68°1403, HIP 72203, LTT 5856, NLTT 38236, PPM 360965
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 129445 is a G type star found in the Circinus constellation located approximately 210 light-years away[1] from the Earth. The star has been under the Magellan Planet Search Program observation due to its absolute visual magnitude and metallicity. The Magellan program conducted 17 doppler velocity tests which spans a full orbital period. The results led the program to detect a planet dubbed HD 129445 b whose readings was accurate to the Keplerian orbital model.[2][3][4]

The HD 129445 planetary system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥1.6 ± 0.6 MJ 2.9 ± 0.2 1840 ± 55 0.70 ± 0.10

See also[edit]

References[edit]

  1. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b Arriagada, Pamela et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal 711 (2): 1229–35. arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229. 
  3. ^ "Estrella del Anfitrión: HD 129445". Planet Quest. Retrieved 2010-02-12. 
  4. ^ "HD 129445". Exoplanets. Retrieved 2010-02-12. 

Coordinates: Sky map 14h 46m 03.06s, −68° 45′ 45.9″