HD 189567

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) 5.108±0.266[5]
Apparent magnitude (H) 4.724±0.076[5]
Apparent magnitude (K) 4.511±0.026[5]
Astrometry
Radial velocity (Rv)−10.548±0.0003[6] 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
Temperature5,726±15[3] K
Metallicity [Fe/H]−0.24±0.01[3] dex
Rotation38.8 days[3]
Rotational velocity (v sin i)2.0[7] km/s
Age11.0±0.5 Gyr[3]
7.23±2.99 Gyr[8]
4.11[9] 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

HD 189567 is a star with a pair of orbiting exoplanets, located in the southern constellation of Pavo. It is also known as Gliese 776, CD-67 2385, and HR 7644. The star has an apparent visual magnitude of 6.07,[3] which is bright enough for it to be dimly visible to the naked eye. It lies at a distance of 58 light years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −10.5 km/s.[6]

The spectrum of HD 189567 presents as an ordinary G-type main-sequence star with a stellar classification of G3V.[3] It has 83%[3] of the mass of the Sun but 110% of the Sun's radius.[2] The star is moderately depleted in heavy elements, having 55% of the solar abundance of iron,[10] but is less depleted in oxygen, having 80% of its solar abundance.[11] It has a low level of magnetic activity in its chromosphere.[3] Age estimates range from 4.11 Gyr based on chromospheric heating to 11.26 Gyr from stellar rotation.[9] The star is radiating 2.1 times the luminosity of the Sun from its photosphere at an effective temperature of 5,726 K.[3]

  1. ^ Cite error: The named reference DJM-2008 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i j k l m n o p q Cite error: The named reference Unger2021 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference GaiaRV was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference chavero2021 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Pace_2013 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Vican_2012 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Giribaldi2019 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference nissen2020 was invoked but never defined (see the help page).