20170+1805 J  2307

 
 
20h 16m 42.43s +18 03' 05.6" P.A. 117 sep 6.1 mag 12.20,13.20
 
 
Coord 2000
20170+1805
Discov num
J  2307
Comp
Coord arcsec 2000
20 16 42.43 +18 03 05.6
Date first
1942
Date last
2015
Obs
10
Pa first
120
Pa last
117
P.A. Now (θ)
117°
Sep first
4.0
Sep last
6.1
Sep. Now (ρ)
6.1"
Mag pri
12.20
Mag sec
13.20
delta mag (ΔM)
1
Spectral class
Pri motion ra
+004
Sec motion ra
+018
Pri motion dec
-012
Sec motion dec
-009
Notes
rPM=0.711
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
116.7
Precise sep
6.098
Constellation
Sagitta
Gaia DR2
81122810368
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20170+1805 J 2307 1942 1 120 4.0 11.00 12.00 201700.00+180500.0
20170+1805 J 2307 2000 3 119 6.1 11.00 12.00 D 201642.43+180305.6
20170+1805 J 2307 2001 4 118 6.2 11.00 12.00 D 201642.43+180305.6
20170+1805 J 2307 2010 4 120 5.3 11.00 12.00 201642.43+180305.6
20170+1805 J 2307 2015 6 117 6.1 12.20 13.20 201642.43+180305.6

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