YZ Canis Minoris

YZ Canis Minoris

A light curve for YZ Canis Minoris from TESS data, adapted from Maehara et al.(2021).[1] The main plot shows both the periodic brightness variation and several flares. The inset plot shows the strongest flare with an expanded time scale.
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Minor
Right ascension 07h 44m 40.17230s[2]
Declination +03° 33′ 08.8752″[2]
Apparent magnitude (V) 11.15[3]
Characteristics
Spectral type M5 V[4]
B−V color index 1.61[3]
Astrometry
Radial velocity (Rv)+26.53±0.30[5] km/s
Proper motion (μ) RA: −347.782[2] mas/yr
Dec.: −445.702[2] mas/yr
Parallax (π)166.9769 ± 0.0343 mas[2]
Distance19.533 ± 0.004 ly
(5.989 ± 0.001 pc)
Absolute magnitude (MV)12.32[6]
Details
Mass0.36±0.02[7] M☉
Radius0.37±0.01[7] R☉
Luminosity1.116×10−2[7] L☉
Surface gravity (log g)5.0[8] cgs
Temperature3,125±61[9] K
Metallicity [Fe/H]−0.26±0.08[9] dex
Rotation2.8[10] days
Rotational velocity (v sin i)4.0[11] km/s
Age49[12] Myr
Other designations
YZ CMI, BD+35°2496, GJ 285, HIP 37766, SAO 63793, G 50-4, G 112-46, LFT 547, LHS 1943, LSPM J0744+0333, LTT 12064, NLTT 18373, PLX 1827, PM 07421+0341, Ross 882, TYC 183-2190-1, GSC 00183-02190, IRAS 07420+0340, 2MASS J07444018+0333089[13]
Database references
SIMBADdata
YZ Canis Minoris is located in the constellation Canis Minor
YZ Canis Minoris is located in the constellation Canis Minor
YZ
Location of YZ Canis Minoris in the constellation Canis Minor

YZ Canis Minoris is a red-hued star in the equatorial constellation of Canis Minor. With an apparent visual magnitude of 11.15,[3] it is much too faint to be viewed with the naked eye. The distance to YZ CMi can be estimated from its annual parallax shift of 167 mas, yielding a value of 19.5 light years. Presently the star is moving further away with a heliocentric radial velocity of +26.5 km/s.[5] It made its closest approach some 162,000 years ago when it made perihelion passage at a distance of 10.2 ly.[14] YZ CMi is a potential member of the Beta Pictoris moving group.[15]

This is a red dwarf star, or M-type main-sequence star, with a stellar classification of M5 V.[4] It is a flare star, so called due to its stellar flares being more powerful than those of Earth's star, and is roughly three times the size of Jupiter.[16] The radio emission from the star is in a 50 mHz bandwidth and is centered on 1464.9 mHz.[17] The X-ray surface flux is 2.73×106 erg s−1 cm−2. It has a coronal temperature of 5.79 MK.[18]

  1. ^ Cite error: The named reference Maehara was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference AstudilloDefru2017 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference West2015 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Nidever2002 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference carmenes2 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference lepine2013 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Gaidos2014 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Newton2017 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference carmenes was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference meshkat2017 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference BailerJones2015 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Nakajima2012 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference First flares was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Mirzoyan (Editor) was invoked but never defined (see the help page).
  18. ^ Cite error: The named reference Johnstone2015 was invoked but never defined (see the help page).