HD 125595

HD 125595
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 14h 21m 23.186s[1]
Declination −40° 23′ 38.22″[1]
Apparent magnitude (V) 9.03[2]
Characteristics
Evolutionary stage Main sequence
Spectral type K4V(k)[3]
Apparent magnitude (B) 10.137[2]
Apparent magnitude (J) 7.097±0.021[2]
Apparent magnitude (H) 6.608±0.026[2]
Apparent magnitude (K) 6.447±0.023[2]
B−V color index 1.107±0.006[2]
Astrometry
Radial velocity (Rv)+4.48±0.45[1] km/s
Proper motion (μ) RA: −561.636[1] mas/yr
Dec.: −68.516[1] mas/yr
Parallax (π)35.4337 ± 0.0762 mas[1]
Distance92.0 ± 0.2 ly
(28.22 ± 0.06 pc)
Absolute magnitude (MV)6.80[2]
Details
Mass0.77[4] M☉
Radius0.73+0.02
−0.03[1] R☉
Luminosity0.241[1] L☉
Surface gravity (log g)4.58[4] cgs
Temperature4,672[4] K
Metallicity [Fe/H]0.13[4] dex
Rotation37.2±2.0 d[5]
Rotational velocity (v sin i)1.50[6] km/s
Age8.17[4] Gyr
Other designations
CD−39°8857, GJ 545.1, HD 125595, HIP 70170, PPM 319432, LHS 2900, LPM 523, LTT 5648, NLTT 37029, GCRV 64739
Database references
SIMBADdata
Exoplanet Archivedata

HD 125595 is a star with a close Neptunian[6] companion in the southern constellation of Centaurus. With an apparent visual magnitude of 9.03,[2] this star is too faint to be viewed with the naked eye. It is located at a distance of 92 light years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +4.5 km/s.[1] The star has a high proper motion, traversing the celestial sphere and an angular rate of 0.57 arcsecond yr−1.[7]

This is an ordinary K-type main-sequence star with a stellar classification of K4V(k),[3] which indicates it is a small star that is generating energy at its core through hydrogen fusion. It is about eight[4] billion years old and is spinning with a projected rotational velocity of 1.5 km/s,[6] giving it a 37 day rotation period.[5] The star shows a moderate level of chromospherically activity due to star spots or plagues.[6] It is smaller, cooler, dimmer, and less massive than the Sun, but shows a higher atmospheric metallicity.[4]

  1. ^ a b c d e f g h i Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray_et_al_2006 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference Luck2018 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference mnras452_3_2745 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Ségransan2011 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Bakos_et_al_2002 was invoked but never defined (see the help page).