WDS 19517+2223 CHE 171 : NOTES
 
 
discov_num notes refcode
CHE 171 There was an error in Chevalier's coordinates due to incorrect Che1908
plate center coordinates. In addition, there was a trigonometric
error in deriving theta; the correct value is 180deg - theta. Hrt2012b
Berko's match to this pair was actually a new pair. Bko2011c
 
 
REFERENCES
 
 
refcode metd author reference
Bko2011c C u Berko, E. ...................
Bko2011c Webb Soc., Double Star Circ. 19, 42, 2011 (BKO 981 - BKO1042)
Che1908 Pa - Chevalier, Stanislas .
Che1908 Shanghai Obs. Zo-Se 4, 60, 1908 (corrections described in Bko2011c and Hrt2012b)
Hrt2012b E2 - Hartkopf, W.I. ...................
Hrt2012b Webb Soc., Double Star Circ. 20, 2012
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19517+2223 CHE 171 1907 1 153 21.7 11.60 12.40 195140.09+222309.0
19517+2223 CHE 171 2000 2 24 21.2 12.50 13.10 N 195122.02+222202.7
19517+2223 CHE 171 2001 3 24 21.1 12.50 13.10 N 195122.02+222202.7
19517+2223 CHE 171 2010 4 24 21.1 12.50 13.10 N 195122.02+222202.7
19517+2223 CHE 171 2015 5 24 21.1 12.50 13.10 N 195122.02+222202.7

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