20317+4143 HJ 1530

 
 
20h 31m 38.12s +41 43' 51.4" P.A. 242 sep 16.2 mag 9.86,10.60
 
 
Coord 2000
20317+4143
Discov num
HJ 1530
Comp
Coord arcsec 2000
20 31 38.12 +41 43 51.4
Date first
1828
Date last
2015
Obs
14
Pa first
243
Pa last
242
P.A. Now (θ)
242°
Sep first
12.0
Sep last
16.2
Sep. Now (ρ)
16.2"
Mag pri
9.86
Mag sec
10.60
delta mag (ΔM)
0.74
Spectral class
Pri motion ra
+001
Sec motion ra
-002
Pri motion dec
-004
Sec motion dec
-005
Notes
rPM=0.587
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
242.1
Precise sep
16.17
Constellation
Cygnus
Tycho2
3161-00576-1
Gaia DR2
02229202304
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20317+4143 HJ 1530 2004 6 242 16.3 9.86 10.60 D 203138.12+414351.4
20317+4143 HJ 1530 2013 8 243 15.9 9.86 10.60 203138.12+414351.4
20317+4143 HJ 1530 2015 10 242 16.2 9.86 10.60 203138.12+414351.4

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