21056+1749 J   797

 
 
21h 05m 37.30s +17 49' 46.5" P.A. 214 sep 3.4 mag 12.10,13.30
 
 
Coord 2000
21056+1749
Discov num
J   797
Comp
Coord arcsec 2000
21 05 37.30 +17 49 46.5
Date first
1912
Date last
2000
Obs
6
Pa first
215
Pa last
214
P.A. Now (θ)
214°
Sep first
2.5
Sep last
3.4
Sep. Now (ρ)
3.4"
Mag pri
12.10
Mag sec
13.30
delta mag (ΔM)
1.2
Spectral class
Pri motion ra
+002
Sec motion ra
Pri motion dec
-009
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
213.5
Precise sep
3.37
Constellation
Delphinus
Tycho2
1653-01452-1
last precise pa
213.5
last precise sep
3.37
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21056+1749 J 797 1971 5 213 3.4 9.50 11.00 210510.00+174900.0
21056+1749 J 797 2000 6 214 3.4 12.30 13.80 210537.30+174946.5
21056+1749 J 797 2010 7 203 3.4 12.10 13.30 210537.30+174946.5

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