Eta Canis Minoris

η Canis Minoris
Location of η Canis Minoris (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Minor
Right ascension 07h 28m 02.07527s[1]
Declination +06° 56′ 31.0897″[1]
Apparent magnitude (V) 5.25[2] + 11.1[3]
Characteristics
Spectral type F0 III[3]
U−B color index +0.17[2]
B−V color index +0.22[2]
Astrometry
Radial velocity (Rv)+17.2[4] km/s
Proper motion (μ) RA: −2.955 ± 0.231[5] mas/yr
Dec.: −43.624 ± 0.197[5] mas/yr
Parallax (π)10.2691 ± 0.1452 mas[5]
Distance318 ± 4 ly
(97 ± 1 pc)
Absolute magnitude (MV)0.1[6]
Details
η CMi A
Mass2.16[4] M☉
Luminosity57.5[4] L☉
Surface gravity (log g)3.66[7] cgs
Temperature7,505±66[4] K
Rotational velocity (v sin i)54[8] km/s
Age818[7] Myr
Other designations
η CMi, 5 CMi, BD+07°1729, GC 9970, HD 58923, HIP 36265, HR 2851, SAO 115477, ADS 6101, CCDM 07280+0657[9]
Database references
SIMBADdata

Eta Canis Minoris (η CMi, η Canis Minoris) is a binary star[3] system in the equatorial constellation of Canis Minor. It is approximately 318 light-years from Earth.

The primary component, η Canis Minoris A, is a yellow-white F-type giant with an apparent magnitude of +5.24. Its companion, η Canis Minoris B, is an eleventh-magnitude star located 4 arcseconds from the primary, though is actually around 440 AU from the main star and takes around 5,000 years to orbit it.[10]

  1. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  5. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  6. ^ Cite error: The named reference Jaschek1998 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference David2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Royer2002 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference kalereta was invoked but never defined (see the help page).