Table 8: Comparisons between expressions for the basic precession quantities.
Source t⁰ t t² t³ t⁴

IAU1976 (L77) 5038.7784 -1.07259 -0.001147

IAU2000 5038.478750 -1.07259 -0.001147

B03 5038.478750 -1.0719530 -0.00114366 0.000132832

F03 $\psi _{\rm A}$ 5038.478143 -1.0791653 -0.00110654 0.000129144

P03 $_{\rm prel}$ 5038.478750 -1.0790091 -0.00114044 0.000132851

P03 5038.481507 -1.0790069 -0.00114045 0.000132851

IAU1976 (L77)
84381.448 0.0 0.05127        -0.007726

IAU2000 84381.448 -0.025240 0.05127        -0.007726

B03 84381.4088 -0.026501 0.0512769 -0.00772723 -0.000000492

F03 $\omega _{\rm A}$ 84381.4062 -0.021951 0.0539411 -0.00719621 +0.000001907

P03 $_{\rm prel}$ 84381.406 -0.025240 0.0512623 -0.00772502 -0.000000467

P03 84381.406 -0.025754 0.0512623 -0.00772503 -0.000000467

IAU1976 (L77) +4.1976 0.19447 -0.000179

IAU2000 +4.1976 0.19447 -0.000179

B03 +4.199604 0.1939715 -0.00022350 -0.000001035

F03 $P_{\rm A}$ +4.197822 0.1939782 -0.00010053 +0.000000097

P03 +4.199094 0.1939873 -0.00022466 -0.000000912

IAU1976 (L77) -46.8150 0.05059 +0.000344

IAU2000 -46.8150 0.05059 +0.000344

B03 -46.809550 0.0510421 +0.00052228 -0.000000569

F03 $Q_{\rm A}$ -46.812649 0.0483315 -0.00000879 -0.000000215

P03 -46.811015 0.0510283 +0.00052413 -0.000000646

IAU1976 (L77) 84381.448 -46.8150 -0.00059 0.001813

IAU2000 84381.448 -46.84024 -0.00059 0.001813

B03 84381.4088 -46.836051 -0.0001667 0.0019991 -0.000000523

F03 $\epsilon_{\rm A}$ 84381.4062 -46.834600 -0.0001700 0.00200000

P03 $_{\rm prel}$ 84381.406 -46.836255 -0.0001831 0.00200340 -0.000000576

P03 84381.406 -46.836769 -0.0001831 0.00200340 -0.000000576

IAU1976 (L77)
+10.5526 -2.38064 -0.001125

IAU2000 +10.5526 -2.38064 -0.001125

B03 +10.557686 -2.3813769 -0.00121258 +0.000170238

F03 $\chi_{\rm A}$ +10.553205 -2.3815525 -0.00106446 -0.000140596

P03 $_{\rm prel}$ +10.556403 -2.3814277 -0.00121196 +0.000170663

P03 +10.556403 -2.3814292 -0.00121197 +0.000170663

**Table 8:** Comparisons between expressions for the basic precession quantities.
Source		t⁰	t	t²	t³	t⁴
IAU1976 (L77)			5038.7784	-1.07259	-0.001147
IAU2000			5038.478750	-1.07259	-0.001147
B03			5038.478750	-1.0719530	-0.00114366	0.000132832
F03	$\psi _{\rm A}$		5038.478143	-1.0791653	-0.00110654	0.000129144
P03 $_{\rm prel}$			5038.478750	-1.0790091	-0.00114044	0.000132851
P03			5038.481507	-1.0790069	-0.00114045	0.000132851
IAU1976 (L77)		84381.448	0.0	0.05127	-0.007726
IAU2000		84381.448	-0.025240	0.05127	-0.007726
B03		84381.4088	-0.026501	0.0512769	-0.00772723	-0.000000492
F03	$\omega _{\rm A}$	84381.4062	-0.021951	0.0539411	-0.00719621	+0.000001907
P03 $_{\rm prel}$		84381.406	-0.025240	0.0512623	-0.00772502	-0.000000467
P03		84381.406	-0.025754	0.0512623	-0.00772503	-0.000000467
IAU1976 (L77)			+4.1976	0.19447	-0.000179
IAU2000			+4.1976	0.19447	-0.000179
B03			+4.199604	0.1939715	-0.00022350	-0.000001035
F03	$P_{\rm A}$		+4.197822	0.1939782	-0.00010053	+0.000000097
P03			+4.199094	0.1939873	-0.00022466	-0.000000912
IAU1976 (L77)			-46.8150	0.05059	+0.000344
IAU2000			-46.8150	0.05059	+0.000344
B03			-46.809550	0.0510421	+0.00052228	-0.000000569
F03	$Q_{\rm A}$		-46.812649	0.0483315	-0.00000879	-0.000000215
P03			-46.811015	0.0510283	+0.00052413	-0.000000646
IAU1976 (L77)		84381.448	-46.8150	-0.00059	0.001813
IAU2000		84381.448	-46.84024	-0.00059	0.001813
B03		84381.4088	-46.836051	-0.0001667	0.0019991	-0.000000523
F03	$\epsilon_{\rm A}$	84381.4062	-46.834600	-0.0001700	0.00200000
P03 $_{\rm prel}$		84381.406	-46.836255	-0.0001831	0.00200340	-0.000000576
P03		84381.406	-46.836769	-0.0001831	0.00200340	-0.000000576
IAU1976 (L77)			+10.5526	-2.38064	-0.001125
IAU2000			+10.5526	-2.38064	-0.001125
B03			+10.557686	-2.3813769	-0.00121258	+0.000170238
F03	$\chi_{\rm A}$		+10.553205	-2.3815525	-0.00106446	-0.000140596
P03 $_{\rm prel}$			+10.556403	-2.3814277	-0.00121196	+0.000170663
P03			+10.556403	-2.3814292	-0.00121197	+0.000170663

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