21306+4213 FYM 336AD

 
 
21h 30m 35.00s +42 12' 40.4" P.A. 280 sep 19.4 mag 8.27,14.70 Sp A7V
 
 
Coord 2000
21306+4213
Discov num
FYM 336
Comp
AD
Coord arcsec 2000
21 30 35.00 +42 12 40.4
Date first
1998
Date last
2015
Obs
3
Pa first
279
Pa last
280
P.A. Now (θ)
280°
Sep first
19.5
Sep last
19.4
Sep. Now (ρ)
19.4"
Mag pri
8.27
Mag sec
14.70
delta mag (ΔM)
6.43
Spectral class
A7V (white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21306+4213 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21306+4213 STT 441 AB 1847 2015 18 328 6.1 8.27 11.26 2.99
Show 21306+4213 FYM 336 AC 1998 2015 3 123 9.5 8.27 14.90 6.63
Show 21306+4213 FYM 336 AD 1998 2015 3 280 19.4 8.27 14.70 6.43 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
280
Precise sep
19.4
Constellation
Cygnus
last precise pa
280
last precise sep
19.4
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21306+4213 FYM 336 AD 2015 2 280 19.4 8.27 14.70 A7V 213035.00+421240.4

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