21117+3818 SMA 136

 
 
21h 11m 46.82s +38 16' 56.8" P.A. 122 sep 3.8 mag 10.90,11.60
 
 
Coord 2000
21117+3818
Discov num
SMA 136
Comp
Coord arcsec 2000
21 11 46.82 +38 16 56.8
Date first
1923
Date last
2016
Obs
9
Pa first
142
Pa last
122
P.A. Now (θ)
122°
Sep first
4.0
Sep last
3.8
Sep. Now (ρ)
3.8"
Mag pri
10.90
Mag sec
11.60
delta mag (ΔM)
0.7
Spectral class
Pri motion ra
-010
Sec motion ra
-002
Pri motion dec
-022
Sec motion dec
-020
Notes
N (See Notes)
rPM=0.341
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
121.9
Precise sep
3.8
Constellation
Cygnus
Gaia DR2
12271244928
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21117+3818 SMA 136 2003 6 125 4.0 10.90 11.60 N D 211146.82+381656.8
21117+3818 SMA 136 2016 9 122 3.8 10.90 11.60 N 211146.82+381656.8

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