03475+2406 STFA 8 AB (Alcyone)

 
 
03h 47m 29.06s +24° 06' 18.8" P.A. 291.00 sep 117.6 mag 2.83,6.27 Sp B7III+A4V dist. 123.61 pc (403.22 l.y.)
 
 
Coord 2000 03475+2406 Discov num STFA  8 Comp AB Coord arcsec 2000 03 47 29.06 +24 06 18.8
Date first 1836 Date last 2016 Obs 37
Pa first 289 Pa last 290.6 P.A. Now (θ) 290.6°
Sep first 117.1 Sep last 117.63 Sep. Now (ρ) 117.63"
Mag pri 2.83 Mag sec 6.27 delta mag (ΔM) 3.44 Spectral class B7III+A4V (blue-white/white)
Pri motion ra +019 Sec motion ra +020
Pri motion dec -044 Sec motion dec -044
Notes N T W (See Notes, Parallax indicates physical, )
rPM=0.021 (< 0.3, Physical double)
This double is physical.
 
 
03475+2406 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 76199 03 47 29 +24 06 19 OCC 251 Aa,Ab 1973 0 -1 -1.0 3.00 4.60 1.60
Show Alcyone 76199 03 47 29 +24 06 19 STFA 8 AB 2016 37 291 117.6 2.83 6.27 3.44 <===
Show 76199 03 47 29 +24 06 19 STFA 8 AC 2016 17 313 182.0 2.83 8.22 5.39
Show 76199 03 47 29 +24 06 19 STFA 8 AD 2016 16 297 191.8 2.83 8.73 5.90
Show 76199 03 47 29 +24 06 19 HL 23 AE 2016 5 232 78.4 2.83 15.00 12.17
Show 76199 03 47 29 +24 06 19 HL 23 AF 2016 5 232 144.5 2.83 13.02 10.19
Show 76199 03 47 29 +24 06 19 HL 23 AG 2016 5 54 200.0 2.83 11.84 9.01
Show 76199 03 47 29 +24 06 19 HL 23 AH 2016 5 44 222.8 2.83 11.72 8.89
Show 76192 03 47 21 +24 06 58 OCC 9084 Ba,Bb 1973 0 -1 0.0 6.70 7.80 1.10
Show 76192 03 47 21 +24 06 58 STFA 8 BC 2017 22 345 86.2 6.27 8.22 1.95
Show 76192 03 47 21 +24 06 58 STFA 8 BD 2015 20 305 75.2 6.27 8.73 2.46
Show 76191 03 47 19 +24 08 21 STFA 8 CD 2016 26 225 54.7 8.22 8.73 0.51
Show 76188 03 47 17 +24 07 42 WSI 52 Da,Db 2010 2 293 0.3 9.20 9.80 0.60
11-fold system
8 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Alcyone Constellation Taurus SAO 76199 HIP 17702
Tycho2 1800-02202-1 Gaia DR2 66714384141781760 HD 23630 HR 1165
GC 4541 BD BD+23 541 Bayer Eta Tauri Bayer name Eta Tau
Flamsteed 25 Tauri Flamsteed name 25 Tau FK5 139 Distance 123.61
Distance ly 403.22 Bayer greek η Tau
Other names 25 TAU
Meaning [Pleiades] queen from evil