HD 45866

HD 45866
Location of HD 45866 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 06h 40m 28.87701s[1]
Declination +77° 59′ 44.8179″[1]
Apparent magnitude (V) 5.72±0.01[2]
Characteristics
Spectral type K5 III[3]
B−V color index +1.47[4]
Astrometry
Radial velocity (Rv)−16.6±0.2[5] km/s
Proper motion (μ) RA: +13.997 mas/yr[1]
Dec.: −5.701 mas/yr[1]
Parallax (π)4.4952 ± 0.0455 mas[1]
Distance726 ± 7 ly
(222 ± 2 pc)
Absolute magnitude (MV)−0.89[6]
Details
Mass2.34±0.69[7] M☉
Radius49.6±2.6[8] R☉
Luminosity468±8[1] L☉
Surface gravity (log g)1.62±0.11[7] cgs
Temperature4,207±140[9] K
Metallicity [Fe/H]−0.11±0.01[10] dex
Age1.15+0.51
−0.35[7] Gyr
Other designations
AG+78°144, BD+78°227, FK5 2507, GC 8574, HD 45866, HIP 31940, HR 2363, SAO 5919[11]
Database references
SIMBADdata

HD 45866, also known as HR 2363 is a solitary star[12] located in the northern circumpolar constellation Camelopardalis. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.72.[2] Gaia DR3 parallax measurements place it 726 light years away and it is currently approaching the Solar System with a heliocentric radial velocity of −16.6 km/s.[5] At its current distance, HD 45866's brightness is diminished by 0.26 magnitudes due to interstellar dust.[13] It has an absolute magnitude of −0.89[6]

This is an evolved red giant with a stellar classification of K5 III.[3] It has 2.34 times the mass of the Sun[7] but it has expanded to nearly 50 times the radius of the Sun[8] at an age of 1.15 billion years.[7] It radiates 468 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,207 K.[9] It has an iron abundance 78% of the Sun's,[10] making it slightly metal deficient.

  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 Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Adams1935 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Haggkvist1970 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Famaey2005 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Feuillet2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Bai2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Sprague2022 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).