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Ann. Geophys., 25, 1227-1232, 2007
www.ann-geophys.net/25/1227/2007/
© European Geosciences Union 2007
The prominent 1.6-year periodicity in solar motion due to the inner planets
I. Charvátová
Geophysical Institute AS CR, Boční II, 141 31 Praha 4, Czech Republic
Abstract. The solar motion due to the inner (terrestrial) planets
(Mercury, Me; Venus, V; Earth, E; Mars, Ma) has been calculated (here for
the years 1868–2030). The author found these basic properties of this
motion: the toroidal volume in which the Sun moves has the inner radius of
101.3 km and the outer radius of 808.2 km. The solar orbit due to the inner
(terrestrial) planets is "heart-shaped". The orbital points which are the
closest to the centre lie at the time distance of 1.6 years (584 days), on
the average, and approximately coincide with the moments of the oppositions
of V and E. The spectrum of periods shows the dominant period of 1.6 years
(V-E) and further periods of 2.13 years (E-Ma) (25.6 months, QBO), 0.91
years (V-Ma), 0.8 years ((V-E)/2) and 6.4 years. All the periods are above
the 99% confidence level. A possible connection of this solar motion with the
mid-term quasi-periodicities (MTQP, i.e. 1.5–1.7 years) in solar and
solar-terrestrial indices can be proposed.
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