HD 46588

HD 46588
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 06h 46m 14.1500s[1]
Declination +79° 33′ 53.3185″[1]
Apparent magnitude (V) +5.44[2]
Characteristics
Spectral type F7 V[3]
U−B color index −0.02[4]
B−V color index +0.53[4]
Astrometry
Radial velocity (Rv)15.2±0.2[5] km/s
Proper motion (μ) RA: −99.163 mas/yr[1]
Dec.: −604.042 mas/yr[1]
Parallax (π)54.9380 ± 0.0595 mas[1]
Distance59.37 ± 0.06 ly
(18.20 ± 0.02 pc)
Absolute magnitude (MV)+4.18[2]
Details
Mass1.13+0.03
−0.02[6] M☉
Radius1.19[7] R☉
Luminosity1.82[7] L☉
Surface gravity (log g)4.40±0.02[6] cgs
Temperature6,273±91[6] K
Metallicity [Fe/H]−0.12±0.06[6] dex
Rotational velocity (v sin i)6.63[8] km/s
Age1.27+1.65
−0.22[6] Gyr
Other designations
23 H. Camelopardalis, AG+79°200, BD+79°212, GC 8711, GJ 240.1, HD 46588, HIP 32439, HR 2401, SAO 5946, WDS J06462+7934A
Database references
SIMBADdata

HD 46588 (HR 2401; Gliese 240.1) is a star in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.44,[2] allowing it to be faintly seen with the naked eye. The object is relatively close at a distance of only 59 light years[1] but is receding with a heliocentric radial velocity of 15 km/s.[5]

HD 46588 is an ordinary F-type main-sequence star with a spectral classification of F7 V.[3] It has 113% the mass of the Sun[6] and 119% its radius.[7] It shines at 182% the luminosity of the Sun[7] from its photosphere at an effective temperature of 6,273 K,[6] giving it a yellow white glow. Isochronic measurements place HD 46588's age at 1.27 billion years,[6] but it's poorly constrained. The star's metallicity is 76% that of the Sun[6] and spins modestly with a projected rotational velocity of 6.63 km/s.[8]

Due to the star's close proximity to Earth and similarity to the Sun, it has been well studied by astronomers.[9] No planets have been found, but a brown dwarf companion was discovered in a WISE survey in 2011. It has a mass of 67.04+8.38
−19.90 Jupiter masses and a temperature of 1360+50
−80 K.[9] An infrared excess has been discovered around HD 46588, indicating a cold debris disk with a temperature of 60 K.

The HD 46588 planetary system[10]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(years) 		Eccentricity Inclination Radius
dust disk 26.34 AU — —
  1. ^ a b c d e Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Abt2008 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1967 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ a b c d e f g h i Cite error: The named reference Aguilera-Gómez2018 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference ticv8 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Martínez-Arnáiz2010 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Loutrel2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Gáspár2016 was invoked but never defined (see the help page).