HD 24496

HD 24496
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 03h 54m 28.03326s[1]
Declination +16° 36′ 57.7897″[1]
Apparent magnitude (V) 6.81[2] (6.9 + 11.1)[3]
Characteristics
Spectral type G7V[4] + M2V[5]
Apparent magnitude (B) 7.529[2]
Apparent magnitude (R) 6.40[2]
Apparent magnitude (I) 6.000[2]
Apparent magnitude (J) 5.384±0.024[2]
Apparent magnitude (H) 5.102±0.026[2]
Apparent magnitude (K) 4.995±0.017[2]
B−V color index 0.719±0.001[2]
Astrometry
Radial velocity (Rv)+18.99±0.09[2] km/s
Proper motion (μ) RA: +214.191[1] mas/yr
Dec.: −167.336[1] mas/yr
Parallax (π)48.8107 ± 0.0474 mas[1]
Distance66.82 ± 0.06 ly
(20.49 ± 0.02 pc)
Absolute magnitude (MV)5.26[2]
Details[6]
A
Mass0.956+0.030
−0.036 M☉
Radius0.91±0.03 R☉
Luminosity0.705+0.073
−0.076 L☉
Surface gravity (log g)4.52+0.03
−0.04 cgs
Temperature5,572±44 K
Metallicity [Fe/H]−0.01±0.03 dex
Rotational velocity (v sin i)0.0±0.5 km/s
Age3.316+3.88
−3.16 Gyr
B
Mass0.53[7] M☉
Other designations
BD+16°527, GC 4699, GJ 3255, HD 24496, HIP 18267, SAO 93662, PPM 119451, WDS J03545+1637A, LTT 11292, NLTT 12133[8]
Database references
SIMBADdata

HD 24496 is a binary star[9] system in the equatorial constellation of Taurus. The combined apparent visual magnitude of the pair is 6.81,[2] which is too faint to be readily visible to the normal human eye. The system is located at a distance of 66.8 light-years from the Sun, based on parallax,[1] and is drifting further away with a radial velocity of +19 km/s.[2] It is traversing the celestial sphere with a proper motion of 0.276″ per year.[10]

The magnitude 6.9[3] primary star, designated component A, is a G-type main-sequence star with a stellar classification of G7V.[4] It is around three billion years old with a low projected rotational velocity. The star has 96% of the mass of the Sun and 91% of the Sun's radius. The metallicity, what astronomers term the abundance of heavier elements, is about the same as in the Sun. The star is radiating 71% of the luminosity of the Sun from its photosphere at an effective temperature of 5,572 K.[6]

The secondary companion, component B, is of magnitude 11.1[3] red dwarf of class M2V[5] that shares a common proper motion with the primary.[11] They have an angular separation of 2.7″ along a position angle of 256°, which is equivalent to a physical projected separation of 55.2 AU.[5] Their orbital period is around 123,000 years.[7]

  1. ^ a b c d e f Cite error: The named reference GaiaDR2 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 Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Mason_et_al_2014 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Koen_et_al_2010 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Raghavan_et_al_2010 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Marsden_et_al_2014 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Tokovinin2014 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 Fuhrmann_et_al_2017 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Lépine_Shara_2005 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Abt_Willmarth_2006 was invoked but never defined (see the help page).