20017+3119 GRV 307

 
 
20h 01m 47.01s +31 19' 21.6" P.A. 138 sep 45.7 mag 12.59,14.19
 
 
Coord 2000
20017+3119
Discov num
GRV 307
Comp
Coord arcsec 2000
20 01 47.01 +31 19 21.6
Date first
1998
Date last
2002
Obs
2
Pa first
138
Pa last
138
P.A. Now (θ)
138°
Sep first
45.7
Sep last
45.7
Sep. Now (ρ)
45.7"
Mag pri
12.59
Mag sec
14.19
delta mag (ΔM)
1.6
Spectral class
Pri motion ra
-009
Sec motion ra
-012
Pri motion dec
-010
Sec motion dec
-007
Notes
rPM=0.305
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
137.8
Precise sep
45.663
Constellation
Cygnus
last precise pa
137.8
last precise sep
45.663
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20017+3119 GRV 307 2000 2 138 45.7 12.30 13.90 D 200147.01+311921.6
20017+3119 GRV 307 2002 3 138 45.7 12.30 13.90 D 200147.01+311921.6
20017+3119 GRV 307 2010 3 142 38.0 12.59 14.19 200147.01+311921.6

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