HD 40873

HD 40873
Location of HD 40873 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 06h 04m 29.11992s[1]
Declination +51° 34′ 24.1921″[1]
Apparent magnitude (V) 6.45[2]
Characteristics
Spectral type A7 V[3] or A7 III[4]
U−B color index +0.16[2]
B−V color index +0.196±0.007[5]
Astrometry
Radial velocity (Rv)19.6±2.9[5] km/s
Proper motion (μ) RA: +1.850[1] mas/yr
Dec.: −41.692[1] mas/yr
Parallax (π)7.1678 ± 0.0962 mas[1]
Distance455 ± 6 ly
(140 ± 2 pc)
Absolute magnitude (MV)0.76[5]
Details
Luminosity38[6] L☉
Temperature7,753[6] K
Rotational velocity (v sin i)134[7] km/s
Other designations
35 Camelopardalis, NSV 2804, BD+51°1146, FK5 2463, HD 40873, HIP 28765, HR 2123, SAO 25548
Database references
SIMBADdata

HD 40873 is a star in the northern constellation of Auriga, a few degrees to the south of Delta Aurigae. Located around 455 light-years distant,[1] it shines with a luminosity approximately 38 times that of the Sun and has an effective temperature of 7,753 K.[6] It is a suspected variable star[2] and has a fairly rapid rotation rate, showing a projected rotational velocity of 134 km/s.[7] Eggen (1985) suggested it is a probable member of the Hyades Supercluster.[8]

Samuel Molyneux named this star Telescopica in Auriga.[9] Flamsteed catalogued it as 35 Camelopardalis Heveliana, which is the name James Bradley continued to use, although it is within the borders of the modern constellation Auriga.[10] Francis Baily reclassified it to Auriga as star 1924 in the British Association's 1845 Catalogue of 8377 Stars.[11]

HD 40873 is considered to be an Am star, a chemically peculiar star with unusually strong absorption lines of metals.[12] It has been given a spectral type of kA5mA7IV,[13] although other catalogues have given more normal classifications such as A7 V or A7 III.[3][4]

  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 Cite error: The named reference apj149_55 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference abt was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference aaa393_897 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggen1985 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference bradley was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference wagman was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference ba was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference renson was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference gray was invoked but never defined (see the help page).