Polar motion of Venus | Astronomy & Astrophysics (A&A)

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Table 4

Periodic components of Venus’s forced polar motion response projected on its surface: $R m_{F} = \sum_{k} R m_{k} \exp (i ν_{k} t)$ $R~m_F = \sum_k R~m_k \exp(i \nu_k t)$ .

Forcing term	Frequency	Period days	Amplitude (m)	Phase (°)
$\frac{T_{0}}{Ω}$ $\dfrac{T_0}{\Omega}$	-Ω	243.02	7.11	348
	2 n - Ω	76.83	2.25	56
	Ω	−243.02	1.80	191
$- i Δ h_{a} - \frac{\dot{Δ h_{a}}}{Ω}$ $- i \Delta h_a - \dfrac{\bdot{\Delta h_a}}{\Omega}$	−(n - Ω)	−116.91	7.00	259
	n - Ω	116.84	3.60	188
		−389.66	1.39	248
	−2(n - Ω)	−58.57	1.26	126
		−20.35	1.04	56
	2(n - Ω)	−58.34	1.04	187

Notes. Time origin is taken at epoch J2000. Only the components with amplitudes >1 m are included.

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