20178+1520 CHE 281

 
 
20h 17m 46.51s +15 19' 35.0" P.A. 316 sep 17.7 mag 11.20,12.60 Sp A5+A8
 
 
Coord 2000
20178+1520
Discov num
CHE 281
Comp
Coord arcsec 2000
20 17 46.51 +15 19 35.0
Date first
1910
Date last
2016
Obs
16
Pa first
308
Pa last
316
P.A. Now (θ)
316°
Sep first
17.3
Sep last
17.7
Sep. Now (ρ)
17.7"
Mag pri
11.20
Mag sec
12.60
delta mag (ΔM)
1.4
Spectral class
A5+A8 (white/white)
Pri motion ra
+003
Sec motion ra
+009
Pri motion dec
-001
Sec motion dec
+014
Notes
rPM=0.971
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.2
Precise sep
17.671
Constellation
Delphinus
SAO
105936
Tycho2
1631-00541-1
Gaia DR2
60560343936
HD
355392
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20178+1520 CHE 281 2006 4 315 17.6 8.89 10.18 D 201746.51+151935.0
20178+1520 CHE 281 2008 5 315 17.5 8.89 10.18 D 201746.51+151935.0
20178+1520 CHE 281 2013 8 317 17.4 8.89 10.18 201746.51+151935.0
20178+1520 CHE 281 2016 11 316 17.7 11.20 12.60 A5+A8 201746.51+151935.0

If you need more information about this double, apply for a data request form to the WDS.