20217+3657 SEI1099

 
 
20h 21m 39.35s +36 56' 43.4" P.A. 288 sep 6.7 mag 11.08,12.10 Sp OB
 
 
Coord 2000
20217+3657
Discov num
SEI1099
Comp
Coord arcsec 2000
20 21 39.35 +36 56 43.4
Date first
1896
Date last
2015
Obs
14
Pa first
289
Pa last
288
P.A. Now (θ)
288°
Sep first
7.2
Sep last
6.7
Sep. Now (ρ)
6.7"
Mag pri
11.08
Mag sec
12.10
delta mag (ΔM)
1.02
Spectral class
OB (blue)
Pri motion ra
+009
Sec motion ra
-002
Pri motion dec
-019
Sec motion dec
-003
Notes
rPM=0.924
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
288.1
Precise sep
6.677
Constellation
Cygnus
Tycho2
2684-00352-1
Gaia DR2
38141082752
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20217+3657 SEI1099 1998 3 288 6.7 11.08 12.10 D 202139.35+365643.4
20217+3657 SEI1099 2008 4 288 6.7 11.08 12.10 D 202139.35+365643.4
20217+3657 SEI1099 2010 9 290 6.6 11.08 12.10 OB 202139.35+365643.4
20217+3657 SEI1099 2015 10 288 6.7 11.08 12.10 OB 202139.35+365643.4

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