TABLE 6

Long-term orbit propagator parameters and recommended numerical representation. The number of bits in column 4 refers to a single parameter of the specified type. Depending on the parameter generation process, common epochs may be adopted for EOP and orbit/clock parameters to reduce the total amount of data transmitted to the user

Parameter		Unit	No. of bits	LSB
Epoch	W_eop		13
	t_eop	[s]	8	3600
Pole offset	x_p, y_p	[″]	21	2^–20
	ẋ_p, ẏ_p	[″/d]	15	2^–21
UT1R offset	ΔUT1R	[s]	31	2^–24
	ΔUṪ1R	[s/d]	19	2^–25
Total EOPs			143
Epoch	W_oe = W_oc		13
	t_oe = t_oc	[s]	8	3600
Epoch position	X, y, z	[m]	34	2^–8
Epoch velocity	ẋ, ẏ, ż	[m/s]	34	2^–21
Empirical accels.	D₀, Y₀,	[nm/s²]	13	2^–9
Clock	a_o	[s]	27	2^–30
	a₁	[s/s]	25	2^–50
	a₂	[s/s²]	17	2^–70
Total per satellite			333