21099+4257 LDS2492

 
 
21h 09m 49.77s +42 57' 20.6" P.A. 135 sep 21.5 mag 15.37,15.64
 
 
Coord 2000
21099+4257
Discov num
LDS2492
Comp
Coord arcsec 2000
21 09 49.77 +42 57 20.6
Date first
1954
Date last
2002
Obs
4
Pa first
135
Pa last
135
P.A. Now (θ)
135°
Sep first
21.0
Sep last
21.5
Sep. Now (ρ)
21.5"
Mag pri
15.37
Mag sec
15.64
delta mag (ΔM)
0.27
Spectral class
Pri motion ra
+202
Sec motion ra
+202
Pri motion dec
-019
Sec motion dec
-019
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
135.2
Precise sep
21.48
Cdsa2 id
LDS 2492
Constellation
Cygnus
Ra deg
21.163825
De deg
42.95572222222223
last precise pa
135.2
last precise sep
21.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21099+4257 LDS2492 2000 3 136 21.6 15.56 15.71 D 210949.77+425720.6
21099+4257 LDS2492 2002 4 135 21.5 15.56 15.71 D 210949.77+425720.6

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