20197+3743 ES 2505

 
 
20h 19m 42.58s +37 43' 16.8" P.A. 247 sep 8.3 mag 8.65,12.10 Sp A0II
 
 
Coord 2000
20197+3743
Discov num
ES 2505
Comp
Coord arcsec 2000
20 19 42.58 +37 43 16.8
Date first
1931
Date last
2015
Obs
7
Pa first
253
Pa last
247
P.A. Now (θ)
247°
Sep first
6.5
Sep last
8.3
Sep. Now (ρ)
8.3"
Mag pri
8.65
Mag sec
12.10
delta mag (ΔM)
3.45
Spectral class
A0II (white)
Pri motion ra
+000
Sec motion ra
-052
Pri motion dec
-001
Sec motion dec
+017
Notes
rPM=1.006
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
246.8
Precise sep
8.307
Constellation
Cygnus
SAO
69838
Tycho2
3151-00757-1
Gaia DR2
04384543872
HD
193612
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20197+3743 ES 2505 1931 1 253 6.5 8.65 12.10 A0II 201942.58+374316.8
20197+3743 ES 2505 2011 2 247 8.3 8.65 12.10 A0II 201942.58+374316.8
20197+3743 ES 2505 2015 6 247 8.3 8.65 12.10 A0II 201942.58+374316.8

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