20172+1304 J  1880

 
 
20h 17m 08.12s +13 04' 32.0" P.A. 246 sep 13.6 mag 11.10,12.90
 
 
Coord 2000
20172+1304
Discov num
J  1880
Comp
Coord arcsec 2000
20 17 08.12 +13 04 32.0
Date first
1907
Date last
2015
Obs
12
Pa first
246
Pa last
246
P.A. Now (θ)
246°
Sep first
12.3
Sep last
13.6
Sep. Now (ρ)
13.6"
Mag pri
11.10
Mag sec
12.90
delta mag (ΔM)
1.8
Spectral class
Pri motion ra
+008
Sec motion ra
-005
Pri motion dec
+006
Sec motion dec
+002
Notes
rPM=1.36
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
245.7
Precise sep
13.581
Constellation
Delphinus
Tycho2
1081-00400-1
Gaia DR2
27796798720
HD
357198
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20172+1304 J 1880 2006 5 246 13.5 11.23 13.30 D 201708.12+130432.0
20172+1304 J 1880 2010 7 246 13.2 11.10 12.90 201708.12+130432.0
20172+1304 J 1880 2015 8 246 13.6 11.10 12.90 201708.12+130432.0

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