Astrometric measurement and reduction of Pulkovo photographic observations of the main Saturnian satellites from 1972 to 2007 in the Gaia reference frame

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Table 6

Mean (O–C) values in equatorial coordinates and error budget for the ZDA.

Sat	(O–C)_α	σ_α	SEM_α	(O–C)_δ	σ_δ	SEM_δ
Dione	–55	54	31	–49	94	54
Rhea	33	83	23	33	74	20
Titan	10	69	11	23	90	14
Iapetus	19	93	17	–1	88	16

Notes. All values are given in milliarcseconds. SEM is the standard error of the mean.

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