HD 222582

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HD 222582
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 23h 41m 51.53s[1]
Declination –05° 59′ 08.7″[1]
Apparent magnitude (V) 7.685 ± 0.005[2]
Characteristics
Spectral type G5
B−V color index 0.648
Astrometry
Radial velocity (Rv) 11.5 ± 0.2 km/s
Proper motion (μ) RA: -144.88 ± 0.88[1] mas/yr
Dec.: -111.93 ± 0.56[1] mas/yr
Parallax (π) 23.94 ± 0.74[1] mas
Distance 136 ± 4 ly
(42 ± 1 pc)
Absolute magnitude (MV) 4.44 ± 0.12[2]
Details
Mass 1.00[2] M
Radius 1.16 ± 0.07[2] R
Luminosity 1.2 L
Surface gravity (log g) 4.34 ± 0.10[2] cgs
Temperature 5776 ± 70[2] K
Metallicity [Fe/H] -0.01 ± 0.07[2] dex
Rotational velocity (v sin i) 1.5 ± 1.0[2] km/s
Age 6.16 Gyr
Other designations
BD-06° 6262, GC 32912, HD 222582, HIP 116906, NLTT 57682, SPOCS 1030, SAO 146849.
Database references
SIMBAD data
Planet
HD 222582 b Data Simbad
Data ExoPlanet
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 222582 is a magnitude 7.7 star approximately 137 light-years away in the constellation of Aquarius. In 1999, a dense superjovian planet was announced orbiting the star by Steven Vogt. There is a red dwarf companion star in a wide orbit.

The HD 222582 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
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]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "HIP 116906". Hipparcos, the New Reduction. Retrieved 2009-12-11. 
  2. ^ a b c d e f g h 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 

External links[edit]

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