HD 73534

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HD 73534
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 08h 39m 15.803s[1]
Declination +12° 57′ 37.34″[1]
Apparent magnitude (V) 8.24
Characteristics
Spectral type G5IV
Apparent magnitude (B) 9.19
Apparent magnitude (J) 6.524
Apparent magnitude (H) 6.072
Apparent magnitude (K) 5.962
B−V color index 0.95
Astrometry
Proper motion (μ) RA: -114.84 ± 1.00[1] mas/yr
Dec.: -94.19 ± 0.59[1] mas/yr
Parallax (π) 12.34 ± 0.74[1] mas
Distance 260 ± 20 ly
(81 ± 5 pc)
Absolute magnitude (MV) 3.31
Details
Mass 1.29 ± 0.1 M
Radius 2.65 ± 0.1 R
Luminosity 3.79 L
Surface gravity (log g) 3.81 cgs
Temperature 4952 ± 50 K
Metallicity 0.16 ± 0.04
Other designations
BD+13°1956, HIP 42446, PPM 125542, SAO 98004
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 73534 is an 8th magnitude G-type subgiant star located approximately 260 light years away[1] in the constellation Cancer. A G5 star, it has evolved off the main sequence, which is why it is much more luminous than our Sun. In August 2009, it was announced that it has a planet. It is the first planetary system discovered in Cancer since that of 55 Cancri in April 1996, and the sixth planet, as 55 Cancri has five known planets.

The HD 73534 planetary system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥1.103 ± 0.087 MJ 3.067 ± 0.068 1770 ± 40 0.074 ± 0.071

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. ^ Valenti, Jeff A. et al. (2009). "Two Exoplanets Discovered at Keck Observatory". The Astrophysical Journal 702 (2): 989–997. arXiv:0908.1612. Bibcode:2009ApJ...702..989V. doi:10.1088/0004-637X/702/2/989. 

Coordinates: Sky map 08h 39m 15.8035s, +12° 57′ 37.351″