

1980 IAU Theory of Nutation


Long periodoc terms


arg                   A                         B                   Per (dygn)

N                -17.1996 - 0.01742 * T     +9.2025 + 0.00089 * T     6798
2*L               -1.3187 - 0.00016 * T     +0.5736 - 0.00031 * T      183
2*N               +0.2062 + 0.00002 * T     -0.0895 + 0.00005 * T     3399
L - G             +0.1426 - 0.00034 * T     +0.0054 - 0.00001 * T      365
3*L - G           -0.0517 + 0.00012 * T     +0.0224 - 0.00006 * T      122

L + G             +0.0217 - 0.00005 * T     -0.0095 + 0.00003 * T      365
2*L - N           +0.0129 + 0.00001 * T     -0.0070                    178
2*L - 2*G1        +0.0048                   +0.0001                    206
2*G1 - N          +0.0046                   -0.0024                   1305
2*L - 2*N         -0.0022                    0                         173

2*L - 2*G         +0.0017 - 0.00001 * T      0                         183
4*L - 2*G         -0.0016 + 0.00001 * T     +0.0007                     91
L - G + N         -0.0015                   +0.0009                    386
-L + G + N        -0.0012                   +0.0006                    347
-2*G1 + 2*N       +0.0011                    0                        1095

-2*L + 2*G1 + N   -0.0006                   +0.0003                    200
L + G - N         -0.0005                   +0.0003                    347
2*L - 2*G1 + N    +0.0004                   -0.0002                    212
3*L - G - N       +0.0004                   -0.0002                    120
L - G1            -0.0004                    0                         412

2*G1              -0.0003                   +0.0001                   1616
G - G1            -0.0003                    0                        3233
2*G - N           -0.0002                   +0.0001                   6786
-2*1 + 3*N        +0.0001                    0                         943
3*L - G - 2*G1    +0.0001                    0                         132

-2*L + 3*N        +0.0001                    0                         169
-L - G + 2*N      -0.0001                    0                         330
L - G + 2*N       +0.0001                    0                         409
-L + G1 + N       +0.0001                    0                         388
3*L - G - 2*N     -0.0001                    0                         118



Short periodoc terms


arg                      a                      b                    Per (dygn)

2*M                   -0.2274 - 0.00002 * T   +0.0977 - 0.00005 * T    13.7
M - G1                +0.0712 + 0.00001 * T   -0.0007                  27.6
2*M - G               -0.0386 - 0.00004 * T   +0.0200                  13.6
3*M - G1              -0.0301                 +0.0129                   9.1
-M + 2*l - G1         -0.0158                 -0.0001                  31.8

M + G1                +0.0123                 -0.0053                  27.1
M - G1 + N            +0.0063 + 0.00001 * T   -0.0033                  27.7
2*M - 2*L             +0.0063                 -0.0002                  14.8
3*M - 2*L + G1        -0.0059                 +0.0026                   9.6
-M + G1 + N           -0.0058 - 0.00001 * T   +0.0032                  27.4

3*M - G1 - N          -0.0051                 +0.0027                   9.1
4*M - 2*L             -0.0038                 +0.0016                   7.1
4*M - 2*G1            -0.0031                 +0.0013                   6.9
M + 2*L - G1          +0.0029                 -0.0012                  23.9
2*M - 2*G1            +0.0029                 -0.0001                  13.8

2*M - 2*N             +0.0026                 -0.0001                  13.6
M + G1 - N            +0.0021                 -0.0010                  27.0
M - 2*L + G1 + N      +0.0016                 -0.0008                  32.0
-M + 2*L - G1 + N     -0.0013                 +0.0007                  31.7
3*M - 2*L + G1 - N    -0.0010                 +0.0005                   9.5

5*M - 2*L - G1        -0.0008                 +0.0003                   5.6
2*M + L - G           +0.0007                 -0.0003                  13.2
2*M - L + G           -0.0007                 +0.0003                  14.2
4*M - 2*L - N         -0.0007                 +0.0003                   7.1
-M + 3*L - G - G1     -0.0007                  0                       34.8

2*M + 2*L - 2*G1      +0.0006                 -0.0003                  12.8
2*M - 2*L + N         -0.0006                 +0.0003                  14.8
M + 2*L - G1 - N      +0.0006                 -0.0003                  23.9
3*M - 2*L - G1        +0.0006                  0                        9.6
-2*M + 2*L + N        -0.0005                 +0.0003                  14.7

4*M - 2*G1 - N        -0.0005                 +0.0003                   6.9
M - L + G - G1        +0.0005                  0                       29.8
-2*M + 3*L - G        -0.0004                  0                       15.4
-M - G1 + 2*N         +0.0004                  0                       26.9
M - L                 -0.0004                  0                       29.5

3*M - L + G - G1      -0.0003                 +0.0001                   9.4
3*M - 3*L + G + G1    -0.0003                 +0.0001                   9.8
5*M - 3*G1            -0.0003                 +0.0001                   5.5
4*M - 3*L + G         -0.0003                 +0.0001                   7.2
M + L - G - G1        -0.0003                  0                       25.6

3*M - G - 2*N         +0.0003                  0                        9.1
-2*M + 2*G1 + N       -0.0002                 +0.0001                  13.7
3*M + L - G - G1      +0.0002                 -0.0001                   8.9
-M + 2*L + G1 - N     -0.0002                 +0.0001                  32.6
2*M - 2*G1 + N        +0.0002                 -0.0001                  13.8

M - G1 + 2*N          -0.0002                 +0.0001                  27.8
3*M - L               +0.0002                 -0.0001                   9.3
5*M - 4*L + G1        -0.0002                 +0.0001                   5.8
3*M - 3*G1            +0.0002                  0                        9.2
-M + G1 + 2*N         +0.0001                 -0.0001                  27.3

2*M - 2*L + 2*G1      +0.0001                 -0.0001                  14.6
M + 3*L - G - G1      +0.0001                 -0.0001                  22.5
5*M - 2*L - G1 - N    -0.0001                 +0.0001                   5.6
4*M - 4*L + 2*G1      -0.0001                 +0.0001                   7.3
2*M + 2*L - 2*G1 - N  +0.0001                 -0.0001                  12.8

-3*M + 4*L - G1       -0.0001                  0                       10.1
-2*M + 4*L - 2*G1     -0.0001                  0                       15.9
3*M + G1 - 2*N        +0.0001                  0                        9.1
-M + L + G - G1       +0.0001                  0                       29.3
6*M - 2*L - 2*G1      -0.0001                  0                        4.7

3*M - 2*L - G1 + N    -0.0001                  0                        9.6
2*M + 2*L - 2*N       +0.0001                  0                       12.7
3*M + 2*L - 3*G1      +0.0001                  0                        8.7
M + 2*L - G1 - 2*N    -0.0001                  0                       23.8
2*M + L - G - N       +0.0001                  0                       13.1

M - 3*L + G + G1 + N  +0.0001                  0                       35.0
-2*M + 3*N            -0.0001                  0                       13.6
M + L                 -0.0001                  0                       25.4
2*M - L - G           -0.0001                  0                       14.2
-3*M + 2*L - G1 + 2*N -0.0001                  0                        9.5

2*M - L + G - N       -0.0001                  0                       14.2
-M + 3*L - G - G1 + N -0.0001                  0                       34.7
M - 2*L - G1 + 2*N    -0.0001                  0                       32.8
4*M - 2*L - 2*G1      +0.0001                  0                        7.1
6*M - 4*L             -0.0001                  0                        4.8

M - G                 -0.0001                  0                       27.3

