17558+3117 SEI 552

 
 
17h 55m 49.46s +31 17' 52.8" P.A. 234 sep 5.6 mag 10.57,11.30
 
 
Coord 2000
17558+3117
Discov num
SEI 552
Comp
Coord arcsec 2000
17 55 49.46 +31 17 52.8
Date first
1899
Date last
2010
Obs
12
Pa first
233
Pa last
234
P.A. Now (θ)
234°
Sep first
5.5
Sep last
5.6
Sep. Now (ρ)
5.6"
Mag pri
10.57
Mag sec
11.30
delta mag (ΔM)
0.73
Spectral class
Pri motion ra
-003
Sec motion ra
-007
Pri motion dec
+004
Sec motion dec
-006
Notes
N (See Notes)
rPM=1.168
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
233.7
Precise sep
5.57
Constellation
Hercules
Tycho2
2608-00579-1
last precise pa
233.7
last precise sep
5.57
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17558+3117 SEI 552 1998 9 234 5.6 10.57 11.30 D 175549.46+311752.8
17558+3117 SEI 552 2008 10 235 5.6 10.57 11.30 D 175549.46+311752.8
17558+3117 SEI 552 2010 12 236 4.6 10.57 11.30 N 175549.46+311752.8

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