HD 46588

Last updated
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]
Distance 59.37 ± 0.06  ly
(18.20 ± 0.02  pc)
Absolute magnitude  (MV)+4.18 [2]
Details
Mass 1.13+0.03
−0.02 [6]   M☉
Radius 1.19 [7]   R☉
Luminosity 1.82 [7]   L☉
Surface gravity (log g)4.40±0.02 [6]   cgs
Temperature 6,273±91 [6]   K
Metallicity [Fe/H]−0.12±0.06 [6]   dex
Rotational velocity (v sin i)6.63 [8]  km/s
Age 1.27+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
SIMBAD data

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 disk26.34 AU ——

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References

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  7. 1 2 3 4 Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 . ISSN   0004-6256.
  8. 1 2 Martínez-Arnáiz, R.; Maldonado, J.; Montes, D.; Eiroa, C.; Montesinos, B. (September 2010). "Chromospheric activity and rotation of FGK stars in the solar vicinity". Astronomy and Astrophysics. 520: A79. arXiv: 1002.4391 . Bibcode:2010A&A...520A..79M. doi: 10.1051/0004-6361/200913725 . eISSN   1432-0746. ISSN   0004-6361.
  9. 1 2 Loutrel, N. P.; Luhman, K. L.; Lowrance, P. J.; Bochanski, J. J. (12 September 2011). "DISCOVERY OF A COMPANION AT THE L/T TRANSITION WITH THE<i>WIDE-FIELD INFRARED SURVEY EXPLORER</i>". The Astrophysical Journal. 739 (2): 81. arXiv: 1107.1812 . Bibcode:2011ApJ...739...81L. doi: 10.1088/0004-637X/739/2/81 . eISSN   1538-4357. ISSN   0004-637X.
  10. ↑ Gáspár, András; Rieke, George H.; Ballering, Nicholas (29 July 2016). "The Correlation Between Metallicity and Debris Disk Mass". The Astrophysical Journal. 826 (2): 171. arXiv: 1604.07403 . Bibcode:2016ApJ...826..171G. doi: 10.3847/0004-637X/826/2/171 . eISSN   1538-4357.
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