HD 189567

HD 189567 is a G3V star located 58.5 light years away, in the constellation of Pavo. The star HD 189567 is also known as Gliese 776, CD-67 2385, and HR 7644.

HD 189567
Location of HD 189567 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pavo[1]
Right ascension 20h 05m 32.76549s[2]
Declination −67° 19′ 15.2261″[2]
Apparent magnitude (V) 6.07[3]
Characteristics
Evolutionary stage Main sequence
Spectral type G3V[3]
Apparent magnitude (U) 6.79[4]
Apparent magnitude (B) 6.71[3]
Apparent magnitude (V) 6.07[3]
Apparent magnitude (J) 4.97[4]
Apparent magnitude (H) 4.724±0.076[4]
Apparent magnitude (K) 4.511±0.026[4]
Astrometry
Radial velocity (Rv)−10.548±0.0003[5] km/s
Proper motion (μ) RA: 845.252±0.016 mas/yr[2]
Dec.: −674.213±0.024 mas/yr[2]
Parallax (π)55.7654 ± 0.0245 mas[2]
Distance58.49 ± 0.03 ly
(17.932 ± 0.008 pc)
Absolute magnitude (MV)4.75[3]
Details
Mass0.83±0.01[3] M☉
Radius1.1[2] R☉
Luminosity2.11[3] L☉
Surface gravity (log g)4.41±0.01[3] cgs
Temperature5726±15[3] K
Metallicity [Fe/H]−0.24±0.01[3] dex
Rotational velocity (v sin i)2.0[6] km/s
Age11.0±0.5[3] Gyr
Other designations
CD−67 2385, CPD−67 3703, 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[4]
Database references
SIMBADdata

The star is moderately depleted in heavy elements, having 55% of the solar abundance of iron,[7] but is less depleted in oxygen, having 80% of its solar abundance.[8]

Planetary system

One exoplanet was discovered around the star in 2011, HD 189567 b.[9] This exoplanet has an estimated minimum mass of 8.5 Earth masses, which means that it is most likely a mini-Neptune.[10] It has an orbital period of 14.3 days, placing it well interior to the habitable zone of the star system.[11] The planet's existence was confirmed in 2021, along with the discovery of a second planet, HD 189567 c.[3]

The HD 189567 planetary system[3]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥8.5±0.6 M🜨 0.111±0.002 14.288±0.002 <0.189 — —
c ≥7.0±0.9 M🜨 0.197±0.003 33.688±0.025 0.16±0.09 — —

References
  1. Staff (2 August 2008). "Finding the constellation which contains given sky coordinates". DJM.cc. Retrieved 2 January 2021.
  2. Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. Unger, N.; Ségransan, D.; et al. (2021). "The HARPS search for southern extra-solar planets. XLVI. 12 super-Earths around the solar type stars HD 39194, HD 93385, HD 96700, HD 154088, and HD 189567". Astronomy & Astrophysics. 654: A104. arXiv:2108.10198. Bibcode:2021A&A...654A.104U. doi:10.1051/0004-6361/202141351.
  4. "HD 189567 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2 January 2021.
  5. Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti, P.; Katz, D.; Le Campion, J. -F.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 52952408.
  6. Llorente de Andrés, F.; Chavero, C.; de la Reza, R.; Roca-Fàbrega, S.; Cifuentes, C. (October 2021). "The evolution of lithium in FGK dwarf stars". Astronomy & Astrophysics. 654: A137. arXiv:2108.05852. Bibcode:2021A&A...654A.137L. doi:10.1051/0004-6361/202141339. eISSN 1432-0746. ISSN 0004-6361.
  7. Giribaldi, R. E.; Porto De Mello, G. F.; Lorenzo-Oliveira, D.; Amôres, E. B.; Ubaldo-Melo, M. L. (2019). "Faint solar analogues at the limit of no reddening". Astronomy & Astrophysics. 629: A33. arXiv:1907.00445. doi:10.1051/0004-6361/201935901. S2CID 195766778.
  8. Nissen, P. E.; Christensen-Dalsgaard, J.; Mosumgaard, J. R.; Silva Aguirre, V.; Spitoni, E.; Verma, K. (2020). "High-precision abundances of elements in solar-type stars". Astronomy & Astrophysics. 640: A81. arXiv:2006.06013. doi:10.1051/0004-6361/202038300. S2CID 219573423.
  9. 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].
  10. "The Habitable Exoplanets Catalog - Planetary Habitability Laboratory @ UPR Arecibo". phl.upr.edu. Retrieved 2020-12-16.
  11. "The Extrasolar Planet Encyclopaedia — HD 189567 b". exoplanet.eu. Retrieved 2020-12-16.
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