20509+1517 J  3113

 
 
20h 51m 01.66s +15 19' 45.0" P.A. 110 sep 4.6 mag 12.80,12.90
 
 
Coord 2000
20509+1517
Discov num
J  3113
Comp
Coord arcsec 2000
20 51 01.66 +15 19 45.0
Date first
1944
Date last
2010
Obs
5
Pa first
105
Pa last
110
P.A. Now (θ)
110°
Sep first
4.0
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
12.80
Mag sec
12.90
delta mag (ΔM)
0.1
Spectral class
Pri motion ra
-018
Sec motion ra
+008
Pri motion dec
+007
Sec motion dec
-016
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Delphinus
last precise pa
110
last precise sep
4.61
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20509+1517 J 3113 2004 2 112 4.8 11.50 11.50 205006.67+151700.0
20509+1517 J 3113 2010 5 110 4.6 12.80 12.90 205101.66+151945.0

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