66 Arietis

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66 Arietis
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 03h 28m 26.56850s[1]
Declination +22° 48′ 14.4271″[1]
Apparent magnitude (V) 6.03[2] (6.2/10.4)[3]
Characteristics
Spectral type K0 IV[4]
B−V color index 0.964[5]
Astrometry
Radial velocity (Rv) +48.99 ± 0.16[5] km/s
Proper motion (μ) RA: +2.12[1] mas/yr
Dec.: –110.85[1] mas/yr
Parallax (π) 15.52 ± 0.81[1] mas
Distance 210 ± 10 ly
(64 ± 3 pc)
Details
66 Ari A
Radius 6[5] R
Luminosity 18[5] L
Surface gravity (log g) 3.0[5] cgs
Temperature 4,864[5] K
Rotational velocity (v sin i) 1.6[5] km/s
Other designations
BD+22 495, HD 21467, HIP 16181, HR 1048, SAO 75945, WDS J03284+2248.[6]

66 Arietis (abbreviated 66 Ari) is a double star[3] in the northern constellation of Aries. 66 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 6.03,[2] putting it near the limit for naked eye visibility. The magnitude 10.4 companion is located at an angular separation of 0.810 arcseconds from the primary along a position angle of 65°.[3] The distance to this pair, as determined from parallax measurements made during the Hipparcos mission, is approximately 210 light-years (64 parsecs).[1]

The spectrum of the primary component matches a stellar classification of K0 IV,[4] with the luminosity class of IV indicating this is a subgiant star. It has 6 times the radius of the Sun and shines with 18 times the Sun's energy.[5] This energy is radiated from the outer atmosphere at an effective temperature of 4,864 K,[5] giving it the cool orange-hued glow of a K-type star.

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  2. 2.0 2.1 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  3. 3.0 3.1 3.2 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  4. 4.0 4.1 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  5. 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  6. "66 Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-18.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

External links