HD 136118

HD 136118

Telescope image of HD 136118
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 15h 18m 55.47227s[1]
Declination −01° 35′ 32.5926″[1]
Apparent magnitude (V) 6.93[2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type F7V[4]
B−V color index 0.553±0.007[2]
Astrometry
Radial velocity (Rv)−3.07±0.13[1] km/s
Proper motion (μ) RA: −123.024(31) mas/yr[1]
Dec.: 22.180(30) mas/yr[1]
Parallax (π)19.8116 ± 0.0341 mas[1]
Distance164.6 ± 0.3 ly
(50.48 ± 0.09 pc)
Absolute magnitude (MV)3.60[5]
Details
Mass1.84±0.23[6] M☉
Radius1.70±0.02[7] R☉
Luminosity3.717±0.018[7] L☉
Surface gravity (log g)4.08[5] cgs
Temperature6,148+38
−43[7] K
Metallicity [Fe/H]−0.06±0.01[2] dex
Rotational velocity (v sin i)8.5[5] km/s
Age3.5±0.4[2] Gyr
Other designations
BD−01° 3045, HD 136118, HIP 74948, SAO 140452[8]
Database references
SIMBADdata

HD 136118 is a star in the Serpens Caput section of the Serpens constellation. The star is too dim to be readily visible to the naked eye, having an apparent visual magnitude of 6.93.[2] It is located at a distance of 165 light years from the Sun based on parallax,[1] and is drifting closer with a radial velocity of −3 km/s.[2]

This object is an F-type main-sequence star with a stellar classification of F7V.[4] The absolute visual magnitude of this star suggests that it has begun to evolve away from the main sequence.[3] The abundances of the stellar atmosphere are similar to the Sun, and it has only a modest level of chromospheric activity.[9] HD 136118 has 84% more mass compared to the Sun,[6] and is 70%[7] larger in radius. The star is an estimated 3.5[2] billion years old and is spinning with a projected rotational velocity of 8.5 km/s.[5]

  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 c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Fischer2002 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Earle2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference stassun2017 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Martioli2010 was invoked but never defined (see the help page).