HD 183263 b

HD 183263 b
Exoplanet List of exoplanets
Parent star
Star HD 183263
Constellation Aquila
Right ascension (α) 19h 28m 24.5727s
Declination (δ) +08° 21′ 28.995″
Apparent magnitude (mV) 7.86
Distance172 ly
(52.8 pc)
Spectral type G2IV
Orbital elements
Semi-major axis(a) 1.52 AU
Periastron (q) 0.94 AU
Apastron (Q) 2.10 AU
Eccentricity (e) 0.38 ± 0.03
Orbital period(P) 634.23 d
(1.7364 y)
Orbital speed (υ) 26.2 km/s
Argument of
periastron		 (ω) 242 ± 53°
Time of periastron (T0) 2452120.61 ± 0.69 JD
Semi-amplitude (K) 87.3 ± 3.2 m/s
Physical characteristics
Minimum mass(m sin i)3.69 MJ
Discovery information
Discovery date January 25, 2005
Discoverer(s) Marcy et al.[1]
Discovery method Doppler spectroscopy
Discovery site Keck Observatory, Hawaii,
 USA
Discovery status Published[1]
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 183263 b is an extrasolar planet orbiting the star HD 183263. This planet has a minimum mass of 3.69 times more than Jupiter and takes 1.7364 years to orbit the star. The planet was discovered on January 25, 2005 using multiple Doppler measurements of five nearby FGK main-sequence stars and subgiants obtained during the past 4–6 years at the Keck Observatory in Mauna Kea, Hawaii. These stars, namely, HD 183263, HD 117207, HD 188015, HD 45350, and HD 99492, all exhibit coherent variations in their Doppler shifts consistent with a planet in Keplerian motion, and the results were published in a paper by Geoffrey Marcy et al. Photometric observations were acquired for four of the five host stars with an automatic telescope at Fairborn Observatory. The lack of brightness variations in phase with the radial velocities supports planetary-reflex motion as the cause of the velocity variations.[1] An additional planet in the system was discovered later.[2]

See also

References

  1. 1 2 3 Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal 619 (1): 570–584. Bibcode:2005ApJ...619..570M. doi:10.1086/426384.
  2. ↑ Wright, J. T.; et al. (2009). "Ten New and Updated Multi-planet Systems, and a Survey of Exoplanetary Systems". The Astrophysical Journal 693 (2): 1084–1099. arXiv:0812.1582. Bibcode:2009ApJ...693.1084W. doi:10.1088/0004-637X/693/2/1084.

External links

Coordinates: 19h 28m 24.5727s, +08° 21′ 28.995″


This article is issued from Wikipedia - version of the Monday, December 29, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.