HD 181433 c

HD 181433 c
Parent star
Extrasolar planet		List of extrasolar planets
Star		HD 181433
Constellation		Pavo
Right ascension	(α)	19^h 25^m 09.5663^s^[1]
Declination	(δ)	-66° 28′ 07.671″^[1]
Apparent magnitude	(m_V)	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
Semimajor 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] M_J
Discovery information
Discovery date		June 16, 2008^[5]
Discoverer(s)		Bouchy et al.^[6]
Detection method		Doppler spectroscopy^[5]
Discovery site		La Silla Observatory^[5]
Discovery status		Announced^[5]
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data

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 submitted a paper detailing the HD 181433 planetary system to Astronomy and Astrophysics.^[6]

References

^ ^a ^b ^c "NLTT 47732 -- High proper-motion star". SIMBAD. http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=hd+181433&NbIdent=1&Radius=10&Radius.unit=arcmin&submit=submit+id. Retrieved 2008-10-02.
^ ^a ^b van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=95152. Retrieved 2008-10-02.
^ ESA (1997). "HIP 95152". The Hipparcos and Tycho Catalogues: The Hipparcos Main Catalogue. http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HIP%2095467. Retrieved 2008-10-02.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Schneider, J.. "Notes for Planet HD 181433 c". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/planet.php?p1=HD+181433&p2=c. Retrieved 2008-10-02.
^ ^a ^b ^c ^d "A Trio of Super-Earths" (Press release). ESO. 2008-06-16. http://www.eso.org/public/outreach/press-rel/pr-2008/pr-19-08.html. Retrieved 2008-10-02.
^ ^a ^b Mayor, M.; Udry, S.; Lovis, C.; Pepe, F.; Queloz, D.; Benz, W.; Bertaux, J. -L.; Bouchy, F. et al. (2008). "The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)". Astronomy and Astrophysics 493 (2): 639–644. arXiv:0806.4587. Bibcode 2009A&A...493..639M. doi:10.1051/0004-6361:200810451. - page 2 gives a reference to details about the HD 181433 system as Bouchy et al. (2008)