Epsilon Canis Minoris

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Template:Short description

ε Canis Minoris
Template:Location mark
Location of ε Canis Minoris (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Canis Minor
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) +5.002[2]
Characteristics
Evolutionary stage horizontal branch[3]
Spectral type G6.5 IIb[4]
U−B Template:Engvar +0.774[2]
B−V Template:Engvar +1.004[2]
Astrometry
Radial velocity (Rv)Template:Val[5] km/s
Proper motion (μ) RA: Template:Val[6] mas/yr
Dec.: Template:Val[6] mas/yr
Parallax (π)4.2624±0.2288 mas[6]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−2.62[7]
Details[3]
MassTemplate:Val Template:Solar mass
RadiusTemplate:Val Template:Solar radius
LuminosityTemplate:Val Template:Solar luminosity
Surface gravity (log g)Template:Val cgs
TemperatureTemplate:Val K
Metallicity [Fe/H]Template:Val dex
Rotational velocity (v sin i)8[8] km/s
AgeTemplate:Val Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

Script error: No such module "Check for unknown parameters".

Epsilon Canis Minoris (ε Canis Minoris) is a suspected binary star[10] system in the equatorial constellation of Canis Minor. It is a fifth magnitude star, which means it is bright enough to be faintly visible to the naked eye.[2] Based upon an annual parallax shift of just 3.13 mas as seen from Earth,[1] this star is located roughly 770 light years from the Sun, give or take a 40 light year margin of error.[6]

This is an evolved G-type bright giant star with a stellar classification of G6.5 IIb.[4] It is most likely (99% chance) on the horizontal branch,[3] and is a barium star that shows an abnormal overabundance of barium in its spectrum.[11] This s-process element may have been accreted from a now white dwarf companion during a previous stage of its evolution.[10] The bright giant component has an estimated 4.63 times the mass of the Sun and has expanded to 45.5 times the Sun's radius. The star is radiating 1,087 times the Sun's luminosity from its enlarged photosphere at an effective temperature of about 4,916 K.[3]

References

Template:Reflist

Template:Stars of Canis Minor

  1. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named vanLeeuwen2007
  2. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named Jennens1975
  3. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named Reffert2015
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named perkins1989
  5. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named deBruijne2012
  6. ↑ a b c d Template:Cite DR2
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Takeda2008
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Bernacca1970
  9. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named SIMBAD
  10. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named Eggleton2008
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Williams1975
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