Precise predictions of stellar occultations by Pluto, Charon, Nix, and Hydra for 2008–2015

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Table 2:

Astrometry of individual CCD frames of WFI mosaics.
Sky	Mean errors		Frames	No. UCAC2
path	$\sigma(\Delta$ $\alpha$ cos $\delta)$	$\sigma(\Delta$ $\delta)$	per year	stars/frame
year	mas	mas
2008	59	59	112	105
2009	58	56	112	79
2010	58	56	128	164
2011	61	59	160	153
2012	63	62	168	125
2013	63	62	168	107
2014	62	62	184	105
2015	58	57	168	132

Notes. Mean errors come from standard deviations of (O-C) residuals from individual (RA, Dec) solutions with the UCAC2 catalog. The six constants polynomial model was used to relate (x, y) measurements with (X, Y) tangent plane coordinates. The (x, y) centers were pre-corrected by the FDPs. See details in Sect. 4.2.

Source LaTeX | All tables | In the text

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