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The lunar standstill phenomenon was probably known from Megalithic times. In high latitudes, there was a period within the 18.6 years cycle, when the Moon became circumpolar. [4] It would have drawn the attention of locals. In other latitudes, the major lunar standstill featured constant scene illumination during the full Moon.
Lunar standstill: every 18.6 years, the declination range of the Moon reaches a maximum or minimum. Lunar precession is a term used for three different precession motions related to the Moon . First, it can refer to change in orientation of the lunar rotational axis with respect to a reference plane , following the normal rules of precession ...
This is called major lunar standstill. Around this time, the Moon's declination will vary from −28°36′ to +28°36′. Conversely, 9.3 years later, the angle between the Moon's orbit and Earth's equator reaches its minimum of 18°20′. This is called a minor lunar standstill. The last lunar standstill was a minor standstill in October 2015.
This is called major lunar standstill. Around this time, the Moon's declination will vary from −28°36′ to +28°36′. Conversely, 9.3 years later, the angle between the Moon's orbit and Earth's equator reaches its minimum of 18°20′. This is called a minor lunar standstill. The last lunar standstill was a minor standstill in October 2015.
The orientation of the plane containing the vectors normal to the orbits and the Moon's rotational axis rotates 360° with a period of about 18.6 years, whereas the Earth's axis precesses with a period of around 26,000 years, so the line-up of this illustration (a major lunar standstill) occurs only once every 18.6 years.
Lunar standstill; T. Tidal acceleration This page was last edited on 5 September 2023, at 21:33 (UTC). Text is available under the Creative Commons Attribution ...
A standstill is a situation of no movement or activity. Standstill may refer to: Lunar standstill, a time at which the range of the Moon's declination is at a maximum or minimum; Standstill (band), a Spanish post-hardcore-band; Standstill (bicycle), a technique used by bicycle riders; Standstill agreement, an instrument of a hostile takeover ...
This page was last edited on 27 July 2013, at 13:53 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...