Hamal

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Star
Hamal
(Alpha Arietis)
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Aries
Right ascension 02 h 07 m 10.41 s
declination + 23 ° 27 ′ 44.7 ″
Apparent brightness 2.01 mag
Typing
B − V color index +1.15 
U − B color index +1.12 
R − I index +0.62 
Spectral class K2 III
Astrometry
Radial velocity (−14.6 ± 0.1) km / s
parallax (49.56 ± 0.25)  mas
distance (65.8 ± 0.3)  ly
(20.2 ± 0.1)  pc  
Visual absolute brightness M vis +0.5 mag
Proper movement 
Rec. Share: (+188.55 ± 0.31)  mas / a
Dec. portion: (−148.08 ± 0.19)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name α arietis
Flamsteed name 13 Arietis
Bonn survey BD + 22 ° 306
Bright Star Catalog HR 617 [1]
Henry Draper Catalog HD 12929 [2]
Gliese catalog FY 84.3 [3]
Hipparcos catalog HIP 9884 [4]
SAO catalog SAO 75151 [5]
Tycho catalog TYC 1758-2416-1 [6]
2MASS catalog 2MASS J02071038 + 2327447 [7]
Other names FK5  74
annotation
  1. ↑ estimated from apparent brightness and distance

Hamal (also Hamel , Arabic الحمل, DMG al-ḥamal  'lamb'), also called Alpha Arietis in Latin ( α Arietis for short ), is a K2 giant in the constellation Aries . With an apparent visual magnitude of around 2.0  mag , it is the brightest star in this constellation.

See also

Web links

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
  5. ↑ The Construction of the Universe - From Atom to Spiral Nebula, Peter von der Osten-Sacken, Gutenberg Book Guild, FfM, 1971, ISBN 3 7632 1648 0