discov_num	notes	refcode
CHE 9	Chevalier's measure was correct, but his published (dx,dy) predict	Che1908
	different (rho,theta) than published. This was apparently due to a
	typographic error in dx, which should be +0'.0708. Chevalier applied
	his declination offset from the plate center in the wrong direction,
	leading to an error of over 25' in the coordinates. The image for the
	pair at the corrected coordinates is elongated on the Aladin image;
	due to uncertain relative proper motion it's impossible to tell
	whether his rho and theta values are correct.	Hrt2012b

refcode	metd	author	reference
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

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00210+2647	CHE 9		1907	1	68	4.6	10.11	13.20			002100.37+264741.8
00210+2647	CHE 9		2000	2	336	5.5	10.11	13.20		N	002100.82+271305.5
00210+2647	CHE 9		2015	3	340	4.7	10.11	13.20		N	002100.82+271305.5

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