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
2015
Obs
7
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
45.658
Constellation
Cygnus
Gaia DR2
64323419264
 
 
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
20017+3119 GRV 307 2015 3 138 45.7 12.59 14.19 200147.01+311921.6

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