20159+4257 ROE  42

 
 
20h 15m 54.16s +42 56' 34.4" P.A. 91 sep 6.1 mag 10.68,11.06
 
 
Coord 2000
20159+4257
Discov num
ROE  42
Comp
Coord arcsec 2000
20 15 54.16 +42 56 34.4
Date first
1892
Date last
2015
Obs
19
Pa first
94
Pa last
91
P.A. Now (θ)
91°
Sep first
6.0
Sep last
6.1
Sep. Now (ρ)
6.1"
Mag pri
10.68
Mag sec
11.06
delta mag (ΔM)
0.38
Spectral class
Pri motion ra
+004
Sec motion ra
+005
Pri motion dec
-008
Sec motion dec
-008
Notes
rPM=0.106 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
91.3
Precise sep
6.051
Constellation
Cygnus
Tycho2
3159-00956-2
Gaia DR2
42373675392
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20159+4257 ROE 42 2006 7 92 6.0 10.68 11.06 D 201554.16+425634.4
20159+4257 ROE 42 2007 14 91 6.0 10.68 11.06 201554.16+425634.4
20159+4257 ROE 42 2010 15 93 4.8 10.68 11.06 201554.16+425634.4
20159+4257 ROE 42 2015 15 91 6.1 10.68 11.06 201554.16+425634.4

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