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Table A.1

List of variables.

Var. Description

a column vector of the P attitude parameters
B width of the attitude bin
C covariance matrix of all parameters, size (5N + P)2
f l calculated CCD transit time in observation l
i, j, k indices used only for sources (=1...N)
L correlation length of the cubic attitude spline
l, m indices used for observations
M spline order (degree M − 1)
N total number of (primary) sources
N normal matrix, size (5N + P)2
n (=9) No. of astrometric CCDs in the along-scan direction
P number of attitude parameters
p, q, r indices used only for attitude points (=1...P)
s i column vector of 5 astrometric parameters for source i
T (=4.85 s) temporal spacing of CCD observations
t l observed CCD transit time in observation l
u, v indices used for both source and attitude parameters
U covariance matrix of source parameters, size (5N)2
V covariance matrix of attitude parameters, size P2
w l (=) the weight of observation l
α order of expansion term (=0,   1,   ...   )
Δt knot interval of the attitude spline
κ(i,k) number of attitude points common to sources i and k
σ l uncertainty (standard deviation) of tl
ω fudge factor for the attitude variance

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