HD 47536 b

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HD 47536 b
Extrasolar planet List of extrasolar planets
Parent star
Star HD 47536
Constellation Canis Major
Right ascension (α) 06h 37m 47.618s[1]
Declination (δ) −32° 20′ 23.04″[1]
Apparent magnitude (mV) 5.261
Distance 400 ± 10[1] ly
(123 ± 3[1] pc)
Spectral type K0III
Orbital elements
Semimajor axis (a) 1.61 AU
(241 Gm)
    13.3 mas
Periastron (q) 1.26 AU
(188 Gm)
Apastron (Q) 1.96 AU
(293 Gm)
Eccentricity (e) 0.2 ± 0.08
Orbital period (P) 430 d
(1.18 y)
Orbital speed (υ) 40.8 km/s
Argument of
periastron
(ω) 260.8 ± 23.7°
Time of periastron (T0) 2,451,599 ± 21.5 JD
Semi-amplitude (K) 113 ± 11 m/s
Physical characteristics
Minimum mass (m sin i) 4.96 MJ
Discovery information
Discovery date January 22, 2003[2]
Discoverer(s) Setiawan et al.[3]
Discovery method Radial velocity
Discovery site  Chile
Discovery status Published[3]
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data

HD 47536 b is an extrasolar planet located approximately 400 light-years away[1] in the constellation of Canis Major, orbiting the star HD 47536. The mass and semimajor axis are not exactly known, the mass can either be 4.96 or 9.67 MJ and semimajor axis can either be 1.61 or 2.25 AU, both depending on the mass of parent star. The orbital period about HD 47536 is 430 days or 1.18 years.

Its inclination and thereby true mass is being calculated via astrometry with Hubble. The astrometricians expect publication by mid-2009.[4]

See also[edit]

References[edit]

  1. ^ a b c d e 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. ^ "Distant World in Peril Discovered from La Silla" (Press release). Garching, Germany: European Southern Observatory. January 22, 2003. Retrieved December 30, 2012. 
  3. ^ a b Setiawan, J. et al. (2003). "Evidence of a sub-stellar companion around HD 47536". Astronomy and Astrophysics 398 (2): L19–L23. Bibcode:2003A&A...398L..19S. doi:10.1051/0004-6361:20021846. 
  4. ^ Fritz Benedict, G.; McArthur, Barbara E.; Bean, Jacob L. (2008). "HST FGS astrometry - the value of fractional millisecond of arc precision". arXiv:0803.0296v1 [astro-ph].

External links[edit]

Coordinates: Sky map 06h 37m 47.6189s, −32° 20′ 23.045″