HD 181433 d

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 181433 d
Exoplanet List of exoplanets
Parent star
Star HD 181433
Constellation Pavo
Right ascension (α) 19h 25m 09.5663s[1]
Declination (δ) −66° 28′ 07.671″[1]
Apparent magnitude (mV) 8.38[1]
Distance 87 ± 3[2] ly
(26.8 ± 0.8 pc)
Spectral type K5V[3]
Mass (m) 0.78[4] M
Temperature (T) 4962 ± 134[4] K
Metallicity [Fe/H] 0.33 ± 0.13[4]
Orbital elements
Semi-major axis (a) 3.00[4] AU
Periastron (q) 1.56 AU
Apastron (Q) 4.44 AU
Eccentricity (e) 0.48 ± 0.05[4]
Orbital period (P) 2172 ± 158[4] d
(5.947 y)
Orbital speed (υ) 15.1 km/s
Argument of
periastron
(ω) -30 ± 13[4]°
Time of periastron (T0) 2452154 ± 194[4] JD
Physical characteristics
Minimum mass (m sin i) 0.54[4] MJ
Discovery information
Discovery date December 9, 2008[5]
Discoverer(s) Bouchy et al.[5]
Discovery method Doppler spectroscopy
Discovery site Chile La Silla Observatory
Discovery status Announced
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data
Exoplanet Archive data
Open Exoplanet Catalogue data

HD 181433 d is an extrasolar planet located approximately 87 light years away[2] in the constellation of Pavo, orbiting the star HD 181433. This planet has a minimum mass of 0.54 Jupiter mass and takes 2172 days to orbit the star. The average orbital distance is 3.00 AU. At periastron distance, it will have distance from the star similar to Mars’ distance from the Sun at 1.56 AU. At apastron, the distance is 4.44 AU. These corresponds to the orbital eccentricity of 0.48.[4]

References[edit]

  1. ^ a b c "NLTT 47732 -- High proper-motion star". SIMBAD. Retrieved 2008-12-15. 
  2. ^ a b van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. Retrieved 2008-12-15. 
  3. ^ ESA (1997). "HIP 95152". The Hipparcos and Tycho Catalogues: The Hipparcos Main Catalogue. Retrieved 2008-12-15. 
  4. ^ a b c d e f g h i j Schneider, J. "Notes for Planet HD 181433 d". The Extrasolar Planets Encyclopaedia. Retrieved 2008-12-15. 
  5. ^ a b Bouchy, F.; et al. (2009). "The HARPS search for southern extra-solar planets. XVII. Super-Earth and Neptune-mass planets in multiple planet systems HD 47186 and HD 181433". Astronomy and Astrophysics. 496 (2): 527–531. Bibcode:2009A&A...496..527B. arXiv:0812.1608Freely accessible. doi:10.1051/0004-6361:200810669. 

External links[edit]

Coordinates: Sky map 19h 25m 09.5663s, −66° 28′ 07.671″