HD 11343

HD 11343
Location of HD 11343 (circled)
Observation data
Epoch J2000.0[1]      Equinox J2000.0[1]
Constellation Eridanus
Right ascension 01h 50m 06.33044s
Declination −54° 27′ 53.8624″
Apparent magnitude (V) 7.88[2]
Characteristics
Evolutionary stage Red-giant branch star
Spectral type K2III/IV[2]
B−V color index 1.10[2]
J−H color index 0.556[2]
J−K color index 0.722[2]
Astrometry
Radial velocity (Rv)6.61[3] km/s
Proper motion (μ) RA: 110.617[1] mas/yr
Dec.: −46.798[1] mas/yr
Parallax (π)6.4964 ± 0.0156 mas[1]
Distance502 ± 1 ly
(153.9 ± 0.4 pc)
Absolute magnitude (MV)1.240+0.275
−0.225[a]
Orbit
PrimaryHD 11343 A
CompanionHD 11343 B
Semi-major axis (a)~2600 AU[4]
Details[4]
HD 11343 A
Mass1.17±0.28[4] / 2.009±0.115[5] M☉
Radius7.83±1.02[6] R☉
Luminosity25.1+5.8
−5.6[6] L☉
Surface gravity (log g)2.70±0.20 cgs
Temperature4670±100 K
Metallicity [Fe/H]−0.15±0.08 dex
Rotational velocity (v sin i)1.3±0.9[6] km/s
HD 11343 B
Mass0.680+0.078
−0.083[7] M☉
Radius0.698+0.062
−0.060[7] R☉
Surface gravity (log g)4.58+0.11
−0.09[7] cgs
Temperature4351+142
−113[7] K
Other designations
CD−55 412, CPD−55 351, Gaia DR3 4912062772547406976, GC 2232, HD 11343, HIP 8541, SAO 232538, PPM 331373, TIC 231019255, TYC 8482-1124-1, GSC 08482-01124, 2MASS J01500631-5427539[2]
Database references
SIMBADdata

HD 11343 (HIP 8541) is a wide binary system between HD 11343 A, a K-type borderline giant star, and HD 11343 B, a red dwarf companion, located in the southern constellation of Eridanus about 500 light-years (150 pc) distant. Two gas giant exoplanets are known to orbit the primary star.

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  2. ^ a b c d e f Cite error: The named reference simbad was invoked but never defined (see the help page).
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  4. ^ a b c Cite error: The named reference Xiao2023 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Feng2022 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Jones2016 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).


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