HD 222582
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]
| 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 | — | — |
| 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] |
| Characteristics | |
| Spectral type | G5[3] |
| B−V color index | 0.648 |
| Astrometry | |
| Radial velocity (Rv) | 11.5 ± 0.2 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 |
| Distance | 137.7 ± 0.4 ly (42.2 ± 0.1 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) | 4.37±0.02[4] cgs |
| Temperature | 5,792±6[4] K |
| Metallicity [Fe/H] | +0.010±0.005[4] dex |
| Rotational velocity (v sin i) | 1.74±0.12[4] km/s |
| Age | 6.46±0.44[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Planet | |
| HD 222582 b | Data Simbad |
| Data ExoPlanet | |
See also
- HD 224693
- List of extrasolar planets
References
- 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.
- 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
- 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.
- 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.
- "Astronomers discover six new planets orbiting nearby stars" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. November 1, 1999. Retrieved December 19, 2017.
- 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.
- 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
- "HD 222582 Image". Simbad.
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