HD 4203 b

HD 4203 b
Exoplanet List of exoplanets
Parent star
Star HD 4203
Constellation Pisces
Right ascension (α) 00h 44m 41.20s[1]
Declination (δ) +20° 26 56.1[1]
Distance250 ± 20[1] ly
(77 ± 6[1] pc)
Spectral type G5
Orbital elements
Semi-major axis(a) 2.07 ± 0.13 AU
Periastron (q) 0.996 AU
Apastron (Q) 3.14 AU
Eccentricity (e) 0.519 ± 0.027
Orbital period(P) 431.88 ± 0.85 d
(1.1824 y)
Orbital speed (υ) 52.3 km/s
Argument of
periastron
(ω) 329.1 ± 3.1°
Time of periastron (T0) 2,451,918.9 ± 2.7 JD
Semi-amplitude (K) 60.3 ± 2.2 m/s
Physical characteristics
Mass(m)>1.16 MJ
(>369 M)
Discovery information
Discovery date 15 October 2001
Discoverer(s) Vogt et al.
Discovery method radial velocity
Discovery site Keck telescope
Discovery status Published[2]
Other designations
HIP 3502 b
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 4203 b is an exoplanet more massive than Jupiter. It orbits two times further from the star than Earth to the Sun. The planet takes 1.1824 year to orbit the star very eccentrically from 1.00 AU to 3.14 AU. The planet was discovered by Steve Vogt using the Keck telescope.[2][3]

See also

References

  1. 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378Freely accessible. Bibcode:2002ApJ...568..352V. doi:10.1086/338768.
  3. Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493Freely accessible. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.

External links

Coordinates: 00h 44m 41.2021s, +20° 26′ 56.138″


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