HD 190984

HD 190984
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pavo
Right ascension 20h 11m 30.71538s[1]
Declination −64° 37′ 13.6853″[1]
Apparent magnitude (V) 8.76[2]
Characteristics
Spectral type F8 V[3]
U−B color index +0.02[4]
B−V color index +0.54[4]
Astrometry
Radial velocity (Rv)+20.48±0.14[1] km/s
Proper motion (μ) RA: +0.193 mas/yr[1]
Dec.: +45.355 mas/yr[1]
Parallax (π)6.7060 ± 0.0153 mas[1]
Distance486 ± 1 ly
(149.1 ± 0.3 pc)
Absolute magnitude (MV)+2.25[5]
Details
Mass1.15±0.01[6] M☉
Radius2.31±0.09[7] R☉
Luminosity5.88±1.01[8] L☉
Surface gravity (log g)3.78±0.03[9] cgs
Temperature6,007±25[9] K
Metallicity−0.49±0.02[9]
Rotational velocity (v sin i)5[10] km/s
Age4.44±0.10[6] Gyr
Other designations
CD−64°1271, CPD−64°4030, HD 190984, HIP 99496, PPM 364454, 2MASS J20113069-6437136[11]
Database references
SIMBADdata
Exoplanet Archivedata

HD 190984, also known as HIP 99496, is a star located in the southern circumpolar constellation Pavo, the peacock. It has an apparent magnitude of 8.76,[2] making it readily visible in small telescopes, but not to the naked eye. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 486 light years away from the Solar System.[1] It appears to be receding with a heliocentric radial velocity of 20.3 km/s.[12]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference XHIP was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Carney1978 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Gomes da Silva2021 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Delgado Mena2017 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Nordstrom2004 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Santos2011 was invoked but never defined (see the help page).