HD 140913

HD 140913
Observation data
Epoch J2000      Equinox J2000
Constellation Corona Borealis
Right ascension 15h 45m 07.44910s[1]
Declination +28° 28′ 11.7388″[1]
Apparent magnitude (V) 8.07[2]
Characteristics
Spectral type G0V[3]
B−V color index 0.612±0.007[4]
Astrometry
Radial velocity (Rv)−20.38±0.21[1] km/s
Proper motion (μ) RA: −87.880 mas/yr[1]
Dec.: 37.978 mas/yr[1]
Parallax (π)20.4949 ± 0.0367 mas[1]
Distance159.1 ± 0.3 ly
(48.79 ± 0.09 pc)
Absolute magnitude (MV)4.81[2]
Orbit[5]
Period (P)147.912+0.022
−0.023 d
Semi-major axis (a)0.561+0.015
−0.016 AU
Eccentricity (e)0.5223±0.0081
Inclination (i)30.3±1.3°
Longitude of the node (Ω)311.0±1.6°
Periastron epoch (T)2,457,387.33±0.90 JD
Argument of periastron (ω)
(secondary)		23.7+2.1
−1.8°
Semi-amplitude (K1)
(primary)		2.023±0.073 km/s
Details[5]
Mass0.987±0.087 M☉
Radius1.034±0.021 R☉
Luminosity1.32+0.15
−0.11 L☉
Surface gravity (log g)4.403+0.042
−0.050 cgs
Temperature6,090+180
−140 K
Metallicity [Fe/H]−0.26+0.21
−0.23 dex
Rotational velocity (v sin i)9.7[2] km/s
Age7.13[2] Gyr
HD 140913 b
Mass93.3+1.7
−1.6 MJup
Other designations
BD+28°2469, HD 140913, HIP 77152, SAO 83985[6]
Database references
SIMBADdata

HD 140913 is a Sun-like star located in the northern constellation of Corona Borealis (The Northern Crown). It is too faint to be visible to the naked eye with an apparent visual magnitude of 8.07.[2] The star is located at a distance of 159 light-years from the Sun based on parallax. Prior to the discovery of a companion, this served as an IAU radial velocity standard,[7] and it is receding from the Sun at a rate of +37 km/s.[8] The space velocity components of this star are (U, V, W) = (-21.77, -14.42, 1.67).[3]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Earle2017 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference mnras328_1_45 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Unger2023 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Stefanik_et_al_1994 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference rgcrv was invoked but never defined (see the help page).