HD 125072

HD 125072
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 14h 19m 04.83414s[1]
Declination −59° 22′ 44.5272″[1]
Apparent magnitude (V) 6.637[2]
Characteristics
Spectral type K3 IV[3]
U−B color index +0.905[4]
B−V color index +1.025[4]
Astrometry
Radial velocity (Rv)−14.9[5] km/s
Proper motion (μ) RA: −454.895[1] mas/yr
Dec.: −810.729[1] mas/yr
Parallax (π)84.4535 ± 0.0349 mas[1]
Distance38.62 ± 0.02 ly
(11.841 ± 0.005 pc)
Absolute magnitude (MV)6.28[2]
Details
Mass0.806±0.017[6] M☉
Radius0.83+0.02
−0.01[1] R☉
Luminosity0.347±0.001[1] L☉
Surface gravity (log g)4.48[3] cgs
Temperature4,858+47
−59[1] K
Metallicity [Fe/H]−0.70[7] dex
Rotational velocity (v sin i)3.97[8] km/s
Age9.98[7] Gyr
Other designations
CD−58°5564, GJ 542, HD 125072, HIP 69972, SAO 241627, LHS 2892, LTT 5625[9]
Database references
SIMBADdata

HD 125072 is a star in the southern constellation of Centaurus. It is a challenge to view with the naked eye, having an apparent visual magnitude of 6.637.[2] The star is located at a distance of 38.6 light years from the Sun based on parallax.[1] It is drifting closer with a radial velocity of −14.9 km/s.[5] The components of the space velocity for this star are U=−18.5, V=−6.9 and W=−26.9 km/s.[7]

The stellar classification of this star is K3 IV,[3] matching a K-type subgiant that is evolving into a giant. It has 81%[6] of the Sun's mass and 83%[1] of the radius of the Sun. The star is radiating 34.7% of the Sun's luminosity from its photosphere at an effective temperature of 4,858 K.[1] Based on the composition and kinematics of this star, it has an estimated age of about 10 billion years.[7] It is spinning with a projected rotational velocity of 4 km/s.[8]

  1. ^ a b c d e f g h i j k Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference cgssn09 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference aj132_1_161 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MERMILLIOD was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference rgcrv was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference aa_555_A150 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference aaa348 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference aaa520_A79 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).