HD 149143

HD 149143 / Rosalíadecastro
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 16h 32m 51.051s[1]
Declination +02° 05′ 05.38″[1]
Apparent magnitude (V) 7.89[2]
Characteristics
Spectral type G0 IV[2] or G3V[3]
B−V color index 0.680[2]
Astrometry
Radial velocity (Rv)12.104±0.0054[4] km/s
Proper motion (μ) RA: −9.240 mas/yr[5]
Dec.: −86.678 mas/yr[5]
Parallax (π)13.6279 ± 0.0247 mas[5]
Distance239.3 ± 0.4 ly
(73.4 ± 0.1 pc)
Absolute magnitude (MV)3.87[2]
Details
Mass1.1±0.1[2] M☉
Radius1.302+0.083
−0.041[6] R☉
Luminosity2.278±0.008[6] L☉
Surface gravity (log g)4.10[2] cgs
Temperature6,213[6] K
Metallicity [Fe/H]0.20±0.05[2] dex
Rotational velocity (v sin i)3.9[2] km/s
Age7.6±1.2[2] Gyr
Other designations
Rosalíadecastro, BD+02° 3127, HD 149143, HIP 81022, SAO 121678, PPM 162774[7]
Database references
SIMBAD149143 data
Exoplanet Archivedata

HD 149143, also called Rosalíadecastro, is a star with a close orbiting exoplanet in the Ophiuchus constellation. Its apparent visual magnitude is 7.89[2] (a binocular object) and the absolute magnitude is 3.87.[8] The system is located at a distance of 239 light years from the Sun based on parallax measurements, and it is drifting further away with a radial velocity of 12 km/s.[4]

On December 17, 2019, as part of the IAU's NameExoWorlds project, the star HD 149143 was given the name Rosalíadecastro in honour of the Spanish poet Rosalía de Castro, who was a significant figure of Galician culture and prominent Spanish writer, whose work often referenced the night and celestial objects. The exoplanet companion was named Riosar in honour of the Sar River in Spain that was present in much of the literary work of the Spanish author Rosalía de Castro.[9][10]

This is a slightly evolved star with a stellar classification of G0 that is overluminous for a high-metallicity G-type dwarf.[8] It has 1.1[2] times the mass of the Sun and 1.3[6] times the Sun's radius. The star has an estimated age of around 7.6 billion years and is spinning with a projected rotational velocity of 3.9 km/s.[2] It is radiating 2.3 times the luminosity of the Sun from its photosphere at an effective temperature of 6,213 K.[6]

  1. ^ a b Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l Cite error: The named reference Fischer2006 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Houk_Swift_1999 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Soubiran_et_al_2018 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference Johns_et_al_2018 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference da Silva2006 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference exoworlds was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference IAU-CSN was invoked but never defined (see the help page).