17228+2155 LDS4740

 
 
17h 22m 48.29s +21 55' 12.4" P.A. 239 sep 9.6 mag 15.90,17.80
 
 
Coord 2000
17228+2155
Discov num
LDS4740
Comp
Coord arcsec 2000
17 22 48.29 +21 55 12.4
Date first
1960
Date last
2010
Obs
4
Pa first
254
Pa last
239
P.A. Now (θ)
239°
Sep first
10.0
Sep last
9.6
Sep. Now (ρ)
9.6"
Mag pri
15.90
Mag sec
17.80
delta mag (ΔM)
1.9
Spectral class
Pri motion ra
+002
Sec motion ra
+010
Pri motion dec
-017
Sec motion dec
-003
Notes
rPM=0.942
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
239.2
Precise sep
9.64
Constellation
Hercules
last precise pa
239.2
last precise sep
9.64
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17228+2155 LDS4740 1997 2 239 9.4 15.90 17.80 D 172248.29+215512.4
17228+2155 LDS4740 2001 3 239 9.1 15.90 17.80 D 172248.29+215512.4
17228+2155 LDS4740 2010 4 240 9.4 15.90 17.80 172248.29+215512.4

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