21177+1636 J   850AB

 
 
21h 17m 39.02s +16 34' 44.2" P.A. 236 sep 2.4 mag 9.60,12.50
 
 
Coord 2000
21177+1636
Discov num
J   850
Comp
AB
Coord arcsec 2000
21 17 39.02 +16 34 44.2
Date first
1912
Date last
2008
Obs
11
Pa first
245
Pa last
236
P.A. Now (θ)
236°
Sep first
1.6
Sep last
2.4
Sep. Now (ρ)
2.4"
Mag pri
9.60
Mag sec
12.50
delta mag (ΔM)
2.9
Spectral class
Pri motion ra
+029
Sec motion ra
Pri motion dec
+002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21177+1636 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 21177+1636 J 850 AB 1912 2008 11 236 2.4 9.60 12.50 2.90 <===
Show 21177+1636 J 850 AC 1912 2016 15 331 12.4 9.60 9.60 0.00
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
235.8
Precise sep
2.43
Cdsa2 id
J 850 AB
Constellation
Pegasus
Ra deg
21.294172222222223
De deg
16.578944444444446
last precise pa
235.8
last precise sep
2.43
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21177+1636 J 850 AB 1974 10 233 2.3 9.60 12.50 211739.02+163444.2
21177+1636 J 850 AB 2008 11 236 2.4 9.60 12.50 211739.02+163444.2

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