21071+3905 ALI 960

 
 
21h 07m 04.66s +39 05' 15.4" P.A. 110 sep 12.7 mag 12.60,12.60
 
 
Coord 2000
21071+3905
Discov num
ALI 960
Comp
Coord arcsec 2000
21 07 04.66 +39 05 15.4
Date first
1928
Date last
2010
Obs
4
Pa first
111
Pa last
110
P.A. Now (θ)
110°
Sep first
12.8
Sep last
12.7
Sep. Now (ρ)
12.7"
Mag pri
12.60
Mag sec
12.60
delta mag (ΔM)
0
Spectral class
Pri motion ra
-001
Sec motion ra
+001
Pri motion dec
-003
Sec motion dec
-002
Notes
rPM=0.707
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
109.8
Precise sep
12.72
Constellation
Cygnus
last precise pa
109.8
last precise sep
12.72
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21071+3905 ALI 960 1998 2 110 12.8 12.60 12.60 D 210704.66+390515.4
21071+3905 ALI 960 2002 3 110 12.8 12.60 12.60 D 210704.66+390515.4
21071+3905 ALI 960 2010 4 110 12.7 12.60 12.60 210704.66+390515.4

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