HD 181433 c

HD 181433 c
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) 1.76[4] AU
Periastron (q) 1.27 AU
Apastron (Q) 2.25 AU
Eccentricity (e) 0.28 ± 0.02[4]
Orbital period(P) 962 ± 15[4] d
(2.63 y)
Orbital speed (υ) 20.0 km/s
Argument of
periastron		 (ω) 21.4 ± 3.2[4]°
Time of periastron (T0) 2453235 ± 7.3[4] JD
Physical characteristics
Minimum mass(m sin i)0.64[4] MJ
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 c 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 0.64 times that of Jupiter and takes 962 days to orbit the star at an orbital distance of 1.76 AU or 263 Gm. However, the orbit is eccentric, which ranges from 1.27 AU (190 Gm) at periastron to 2.25 AU (337 Gm) at apastron.[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 c". 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 c". Exoplanets.

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


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