Asterope (star)

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Star
Asterope (21 Tauri)
M45map.jpg
Above right the pair of steropes in the pleiades
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation bull
Right ascension 03 h 45 m 54.48 s
declination + 24 ° 33 ′ 16.2 ″
Apparent brightness 5.76 likes
Typing
B − V color index (−0.04) 
U − B color index (−0.33) 
R − I index (−0.03) 
Spectral class B8 V
Astrometry
Radial velocity (6.0 ± 0.6) km / s
parallax (7.57 ± 0.13)  mas
distance (431 ± 8)  ly
(132)  pc
Proper movement 
Rec. Share: (20.03 ± 0.05)  mas / a
Dec. portion: (−45.95 ± 0.03)  mas / a
Physical Properties
Other names
and catalog entries
Flamsteed name 21 Tauri
Bonn survey BD + 24 ° 553
Bright Star Catalog HR 1151 [1]
Henry Draper Catalog HD 23432 [2]
Hipparcos catalog HIP 17579 [3]
SAO catalog SAO 76159 [4]
Tycho catalog TYC 1803-1584-1 [5]
2MASS catalog 2MASS J03455447 + 2433162 [6]
Other names Asterope, Sterope I

Asterope (also Sterope ) is the proper name of the star 21 Tauri in the Pleiades . The name comes from Asterope , a Pleiad of Greek mythology .

Because of the low luminosity and the small distance, the name was also used in the past alongside 21 Tauri ( Sterope I ) for 22 Tauri ( Sterope II ). In 2016, however, the IAU set the proper name Asterope as a standardized proper name only for 21 Tauri.

Asterope, like all stars in the Pleiades, can occasionally be covered by the moon .

Web links

Commons : Asterope  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b c d e f g h i 21 Tau. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed July 22, 2018 .
  2. ↑ Richard Hinckley Allen: Star names - Their Lore and Meaning . Dover Books, 1963, p. 407 (Retrieved September 14, 2016).
  3. ↑ Bulletin of the IAU Working Group on Star Names, No. October 2, 2016. (PDF) Retrieved November 10, 2016 (English, 151 KiB).