Epsilon Corvi (ε Crv, ε Corvi) is a star in the southern constellation of Corvus. It has the traditional name Minkar /ˈmɪŋkɑːr/, from Arabic منقار minqar meaning "beak [of the crow]"[10] The apparent visual magnitude is +3.0[2] and it is located at a distance of 318 light-years (97 parsecs) from Earth.[1]

Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
ε Corvi
Thumb
Location of ε Corvi (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Corvus
Right ascension 12h 10m 07.48058s[1]
Declination –22° 37 11.1620[1]
Apparent magnitude (V) +3.024[2]
Characteristics
Spectral type K2 III[3]
U−B color index +1.458[2]
B−V color index +1.318[2]
Astrometry
Radial velocity (Rv)+4.9[4] km/s
Proper motion (μ) RA: –71.74 mas/yr
Dec.: +10.25 mas/yr
Parallax (π)10.26 ± 0.16 mas[1]
Distance318 ± 5 ly
(97 ± 2 pc)
Absolute magnitude (MV)−1.82+0.15
−0.14
[5]
Details
Mass3.2[6] M
Radius52[7] R
Surface gravity (log g)2.16[8] cgs
Temperature4320[8] K
Metallicity [Fe/H]–0.13[8] dex
Rotational velocity (v sin i)1.0[6] km/s
Other designations
2 Crv, BD21° 3487, FK5 453, HD 105707, HIP 59316, HR 4630, SAO 180531.[9]
Database references
SIMBADdata
Close

In Chinese, 軫宿 (Zhěn Sù), meaning Chariot (asterism), refers to an asterism consisting of ε Corvi, γ Corvi, δ Corvi and β Corvi.[11] Consequently, ε Corvi itself is known as 軫宿二 (Zhěn Sù èr, English: the Second Star of Chariot.).[12]

Epsilon Corvi is a red giant with a stellar classification of K2 III, having consumed the hydrogen at its core and evolved away from the main sequence. It has about three times the Sun's mass.[6] The interferometry-measured angular diameter of this star is about 4.99 mas,[13] which, at its estimated distance, equates to a physical radius of about 52 times the radius of the Sun.[7] The effective temperature of the outer envelope is 4320 K,[8] giving it an orange hue that is characteristic of a K-type star.[14] Around 4 times as massive as the Sun, it spent much of its life as a main sequence star of spectral type B5V.[15]

References

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.