20197+4108 STTA205

 
 
20h 19m 44.88s +41 08' 18.7" P.A. 320 sep 46.2 mag 7.19,8.91 Sp B9V
 
 
Coord 2000
20197+4108
Discov num
STTA205
Comp
Coord arcsec 2000
20 19 44.88 +41 08 18.7
Date first
1875
Date last
2016
Obs
30
Pa first
319
Pa last
320
P.A. Now (θ)
320°
Sep first
45.5
Sep last
46.2
Sep. Now (ρ)
46.2"
Mag pri
7.19
Mag sec
8.91
delta mag (ΔM)
1.72
Spectral class
B9V (blue-white)
Pri motion ra
+007
Sec motion ra
+012
Pri motion dec
-001
Sec motion dec
+006
Notes
N (See Notes)
rPM=0.641
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
320.4
Precise sep
46.2
Constellation
Cygnus
SAO
49476
Tycho2
3155-00153-1
Gaia DR2
41264551552
HD
193633
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20197+4108 STTA205 2007 20 320 45.4 7.19 8.91 B9V N D 201944.88+410818.7
20197+4108 STTA205 2012 22 321 46.6 7.19 8.91 B9V N D 201944.88+410818.7
20197+4108 STTA205 2014 23 321 45.1 7.19 8.91 B9V N 201944.88+410818.7
20197+4108 STTA205 2016 25 320 46.2 7.19 8.91 B9V N 201944.88+410818.7

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