HD 222582

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HD 222582
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension  23h 41m 51.5300s[1]
Declination –05° 59′ 08.7315″[1]
Apparent magnitude (V) 7.685 ± 0.005[2]
Spectral type G5[3]
B−V color index 0.648[citation needed]
Radial velocity (Rv)11.5 ± 0.2[citation needed] km/s
Proper motion (μ) RA: −145.401±0.097[1] mas/yr
Dec.: −111.296±0.063[1] mas/yr
Parallax (π)23.6913 ± 0.0606[1] mas
Distance137.7 ± 0.4 ly
(42.2 ± 0.1 pc)
Absolute magnitude (MV)4.44 ± 0.12[2]
Mass1.00[2] M
Radius1.16 ± 0.07[2] R
Luminosity1.2[citation needed] L
Surface gravity (log g)4.37±0.02[4] cgs
Temperature5,792±6[4] K
Metallicity [Fe/H]+0.010±0.005[4] dex
Rotational velocity (v sin i)1.74±0.12[4] km/s
Age6.46±0.44[4] Gyr
Other designations
BD-06° 6262, GC 32912, HD 222582, HIP 116906, NLTT 57682, SPOCS 1030, SAO 146849.
Database references
HD 222582 b Data Simbad
Data ExoPlanet

HD 222582 is a magnitude 7.7 star approximately 138 light-years away in the constellation of Aquarius. In November 1999, a dense superjovian planet was announced orbiting the star by the California and Carnegie Planet Search.[5][3] There is a common proper motion companion in a wide orbit which itself is a close binary making this a triple star system.[6][7]

The HD 222582 planetary system
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b >7.75 MJ 1.35 572 0.76
c (unconfirmed) >0.0513 MJ 0.12 15.144 0.5632

See also[edit]


  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d Fuhrmann, Klaus (February 2008), "Nearby stars of the Galactic disc and halo - IV", Monthly Notices of the Royal Astronomical Society, 384 (1): 173–224, Bibcode:2008MNRAS.384..173F, doi:10.1111/j.1365-2966.2007.12671.x
  3. ^ a b Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal. 536 (2): 902–914. arXiv:astro-ph/9911506. Bibcode:2000ApJ...536..902V. doi:10.1086/308981.
  4. ^ a b c d e dos Santos, Leonardo A.; et al. (August 2016), "The Solar Twin Planet Search. IV; the Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars", Astronomy & Astrophysics, 592: 8, arXiv:1606.06214, Bibcode:2016A&A...592A.156D, doi:10.1051/0004-6361/201628558, A156.
  5. ^ "Astronomers discover six new planets orbiting nearby stars" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. November 1, 1999. Retrieved December 19, 2017.
  6. ^ Riddle, Reed L.; et al. (2015). "A Survey of the High Order Multiplicity of Nearby Solar-type Binary Stars with Robo-AO". The Astrophysical Journal. 799 (1). 4. arXiv:1411.0682. Bibcode:2015ApJ...799....4R. doi:10.1088/0004-637X/799/1/4.
  7. ^ Raghavan, Deepak; et al. (2006). "Two Suns in the Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal. 646 (1): 523–542. arXiv:astro-ph/0603836. Bibcode:2006ApJ...646..523R. doi:10.1086/504823.

External links[edit]

Coordinates: Sky map 23h 41m 51.5299s, −05° 59′ 08.726″