HD 27245

HD 27245
Location of HD 27245 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 04h 21m 47.64917s[1]
Declination +60° 44′ 08.2461″[1]
Apparent magnitude (V) 5.40±0.01[2]
Characteristics
Spectral type M0 III[3]
B−V color index +1.50[4]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)+25.2±0.3[6] km/s
Proper motion (μ) RA: +55.890 mas/yr[1]
Dec.: −114.046 mas/yr[1]
Parallax (π)5.3716 ± 0.0848 mas[1]
Distance607 ± 10 ly
(186 ± 3 pc)
Absolute magnitude (MV)−0.27[7]
Details
Mass1.18[8] M☉
Radius52.8±2.7[9] R☉
Luminosity570±16[10] L☉
Surface gravity (log g)1.29[11] cgs
Temperature4,033±122[12] K
Metallicity [Fe/H]+0.11[8] dex
Other designations
25 H. Camelopardalis,[13] NSV 1558, AG+60°426, BD+60°800, FK5 2317, GC 5244, HD 27245, HIP 20736, HR 1335, SAO 13113[14]
Database references
SIMBADdata

HD 27245, also known as HR 1335 or rarely 25 H. Camelopardalis is a solitary red-hued star[15] located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.4,[2] making it faintly visible to the naked eye. Gaia DR3 Parallax measurements place it approximately 607 light years[1] away from it the Solar System and is drifting further away with a heliocentric radial velocity of 25.2 km/s.[6] At its current distance, HD 27245's brightness is diminished by 0.36 magnitudes due to extinction from interstellar dust.[16] It has an absolute magnitude of −0.27.[7]

HD 27245 is an aging red giant with a stellar classification of M0 III.[3] It has 118% the mass of the Sun[8] but has expanded to a radius of 52.8 R☉.[11] It radiates 570 times the luminosity of the Sun[10] from its enlarged photosphere at an effective temperature of 4,033 K.[12] HD 27245's iron abundance is 129% that of the Sun's,[8] making it metal enriched.

HD 27245 is a suspected variable star with an amplitude of 0.05 magnitudes.[5] Its variability was first observed in 1930 by Joel Stebbins.[17] However, Eggen (1967) instead lists it as an ordinary M-type giant and used the object for comparison.[18] In 1978-9, HD 28245 was again listed as a variable star but did not provide further insight.[19] As of 2017, the star has not been confirmed to be variable.[5]

  1. ^ a b c d e Cite error: The named reference EDR3 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 Appenzeller1967 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 c Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Famaey2005 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference McDonald2017 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Verbunt2010 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Stebbins1930 was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference Eggen1967 was invoked but never defined (see the help page).
  19. ^ Cite error: The named reference Pyl'skaja1978 was invoked but never defined (see the help page).