HD 181433 b

HD 181433 b
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]
Distance87 ± 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) 0.080[4] AU
Periastron (q) 0.048 AU
Apastron (Q) 0.111 AU
Eccentricity (e) 0.396[4]
Orbital period(P) 9.3743[4] d
Orbital speed (υ) 93 km/s
Argument of
periastron		 (ω) 202 ± 10[4]°
Time of periastron (T0) 2454542 ± 0.26[4] JD
Physical characteristics
Minimum mass(m sin i)0.0238[4] MJ
(7.56 M⊕)
Discovery information
Discovery date June 16, 2008[5]
Discoverer(s) Bouchy et al.[6]
Discovery method Doppler spectroscopy[5]
Discovery site Chile La Silla Observatory[5]
Discovery status Announced[5]
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 181433 b is an extrasolar planet located approximately 87 light years away[2] in the constellation of Pavo, orbiting the star HD 181433. This planet has mass at least 7.56 times that of Earth. This planet is classified as a super-Earth and orbits at 0.080 AU and varies only about 0.063 AU with an eccentricity of 0.396.[4] François Bouchy et al. have published a paper detailing the HD 181433 planetary system in Astronomy and Astrophysics.[6]

References

  1. 1 2 3 "NLTT 47732 -- High proper-motion star". SIMBAD. Retrieved 2008-10-02.
  2. 1 2 van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. Retrieved 2008-10-02.
  3. ↑ ESA (1997). "HIP 95152". The Hipparcos and Tycho Catalogues: The Hipparcos Main Catalogue. Retrieved 2008-10-02.
  4. 1 2 3 4 5 6 7 8 9 10 Schneider, J. "Notes for Planet HD 181433 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-10-02.
  5. 1 2 3 4 "A Trio of Super-Earths" (Press release). ESO. 2008-06-16. Archived from the original on 2008-10-07. Retrieved 2008-10-02.
  6. 1 2 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. arXiv:0812.1608. Bibcode:2009A&A...496..527B. doi:10.1051/0004-6361:200810669.
  • "HD 181433 b". Exoplanets.

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


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