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HD 168746 b Extrasolar planet List of extrasolar planets Parent star Star HD 168746 Constellation Serpens Right ascension (α) 18h 21m 49.7832s Declination (δ) –11° 55′ 21.660″ Distance 140.6 ly (43.12 pc) Spectral type G5V Orbital elements Semimajor axis (a) 0.065 AU Periastron (q) 0.060 AU Apastron (Q) 0.070 AU Eccentricity (e) 0.081 ± 0.029 Orbital period (P) 6.403 ± 0.001 d (0.01753 y) Orbital speed (υ) 110 km/s Argument of periastron (ω) 16.30 ± 20.88° Time of periastron (T0) 2,451,994.7 ± 0.4 JD Semi-amplitude (K) 28.6 ± 1.7 m/s Physical characteristics Minimum mass (m sin i) 0.23 MJ (73 M⊕) Discovery information Discovery date 4 May 2000 Discoverer(s) Pepe, Mayor, Galland et al. Detection method Doppler spectroscopy (CORALIE) Discovery site La Silla Observatory Discovery status Published Database references Extrasolar Planets Encyclopaedia data SIMBAD data HD 168746 b is an extrasolar planet orbiting the star HD 168746.[1] It has a minimum mass about one fourth that of Jupiter, so it is most likely a gas giant. It orbits very near the star in a so-called "torch orbit" completing one revolution in only about six and half days. See also HD 108147 b HD 130322 b HD 168443 b HD 169830 b HD 169830 c HD 82943 b References ^ "Exoplanets Galore!". European Southern Observatory. 4 May 2000. http://www.eso.org/public/outreach/press-rel/pr-2000/pr-13-00.html. Retrieved 2 August 2009.  Pepe et al.; Mayor, M.; Galland, F.; Naef, D.; Queloz, D.; Santos, N. C.; Udry, S.; Burnet, M. (2002). "The CORALIE survey for southern extra-solar planets VII Two short-period Saturnian companions to HD 108147 and HD 168746". Astronomy and Astrophysics 388 (2): 632–638. Bibcode 2002A&A...388..632P. doi:10.1051/0004-6361:20020433. http://www.edpsciences.org/papers/aa/full/2002/23/aah3477/aah3477.html.  External links "HD 168746". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+168746.  "HD 168746 b". Extrasolar Visions. http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=133.  Coordinates: 18h 21m 49.7832s, −11° 55′ 21.660″ This extrasolar planet related article is a stub. You can help Wikipedia by expanding it.v · d · e