HD 189567

HD 189567 is a G2V star located 58.4 light years away, in the constellation of Pavo.[3] At least one exoplanet has been discovered around the star: HD 189567 b.[4] This exoplanet has an estimated minimum mass of 10 Earth masses, which means that it is most likely a mini-Neptune.[5] It has an orbital period of 14.3 days, placing it well interior to the habitable zone of the star system.[6] The star HD 189567 is also known as Gliese 776, CD-67 2385, and HR 7644.[7]

The HD 189567 planetary system[4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥10.03±1.04 M⊕ 0.1099±0.0018 14.275±0.005 0.23±0.14 — —
HD 189567
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pavo[1]
Right ascension 20h 05m 32.7652367983s[2]
Declination −67° 19′ 15.228862402″[2]
Apparent magnitude (V) 6.07[2]
Characteristics
Evolutionary stage Main sequence
Spectral type G2V[2]
Apparent magnitude (U) 6.79[2]
Apparent magnitude (B) 6.71[2]
Apparent magnitude (V) 6.07[2]
Apparent magnitude (J) 4.97[2]
Apparent magnitude (H) 4.724±0.076[2]
Apparent magnitude (K) 4.511±0.026[2]
Astrometry
Radial velocity (Rv)−10.548±0.0003[2] km/s
Proper motion (μ) RA: 845.346[2] mas/yr
Dec.: -674.028[2] mas/yr
Parallax (π)55.8197 ± 0.0381[2] mas
Distance58.43 ± 0.04 ly
(17.91 ± 0.01 pc)
Details
Other designations
CD−67 2385, CPD−67 3703, Gaia DR2 6427244702486210816, GJ 776, HD 189567, HIP 98959, HR 7644, SAO 254721, PPM 364390, Ci 20 1180, LFT 1512, LHS 484, LPM 720, LTT 7928, NLTT 48618, PLX 4738, PM 20006-6727, TYC 9098-1638-1, GCRV 12398, GSC 09098-01638, IRAS 20006-6727, 2MASS J20053286-6719156[2]
Database references
SIMBADdata

References
  1. Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 2 January 2021.
  2. "HD 189567 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2 January 2021.
  3. "HD 189567".
  4. Mayor, M.; et al. (12 September 2011). "The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets". arXiv:1109.2497 [astro-ph].
  5. "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-12-16.
  6. "The Extrasolar Planet Encyclopaedia — HD 189567 b". exoplanet.eu. Retrieved 2020-12-16.
  7. "G stars within 100 light-years". www.solstation.com. Retrieved 2020-12-16.


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