HD 112028

HD 112028
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 12h 49m 13.7347s[1]
Declination +83° 24′ 46.432″[1]
Apparent magnitude (V) 5.28[2]
Characteristics
Spectral type A0 IIsp[3]
U−B color index −0.06[2]
B−V color index −0.03[2]
Astrometry
Radial velocity (Rv)+2.3[4] km/s
Proper motion (μ) RA: −31.517(152) mas/yr[1]
Dec.: 20.774(158) mas/yr[1]
Parallax (π)7.7658 ± 0.1164 mas[1]
Distance420 ± 6 ly
(129 ± 2 pc)
Details
Luminosity174[5] L☉
Surface gravity (log g)2.88±0.13[6] cgs
Temperature9,443±345[6] K
Metallicity [Fe/H]−0.39±0.22[6] dex
Rotational velocity (v sin i)275[7] km/s
Other designations
BD+84 290, HD 112028, HIP 62572, HR 4893, SAO 2102, Struve 1694A
Database references
SIMBADdata

HD 112028 is an evolved star in the northern constellation of Camelopardalis. It has spectral peculiarities that have been interpreted as a shell, and also relatively weak magnesium and silicon lines. Its spectral class has been variously assigned between B9 and A2, and its luminosity class between a subgiant and bright giant.[8]

At an angular separation of 21.47″ is the slightly fainter spectroscopic binary HD 112014, consisting of a pair of A-type main sequence stars. HD 112028 and HD 112014 together are known as the binary star Struve 1694.[9]

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  2. ^ a b c Cite error: The named reference MERMILLIOD was invoked but never defined (see the help page).
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  5. ^ Cite error: The named reference Mcdonald2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference prugniel was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference uesugi_fukuda70 was invoked but never defined (see the help page).
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  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).