A question regarding Heliocentric Latitude

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SUMMARY

The discussion centers on the movement of heliocentric latitude points for planets orbiting the Sun, specifically addressing whether these points are fixed or subject to change over time. It is established that the lowest point of Earth occurs in September and the highest in March, with the latitudinal movement being influenced by the planet's orbital tilt. The conversation highlights that the timing of these effects is asynchronous due to the independence of a planet's rotational axis from its orbital plane. Furthermore, the apsidal precession of planets, including Earth, results from complex phenomena, which were only fully understood in the 20th century.

PREREQUISITES
  • Understanding of heliocentric latitude and its significance in planetary motion
  • Familiarity with orbital mechanics and the concept of apsidal precession
  • Knowledge of the ecliptic plane and its relation to planetary orbits
  • Basic grasp of polynomial functions and their application in astronomical models
NEXT STEPS
  • Research "Apsidal Precession" and its implications for planetary orbits
  • Study "Orbital Mechanics" to understand the relationship between rotation and revolution
  • Explore "Heliocentric Latitude" and its calculation for various planets
  • Investigate the "Ecliptic Plane" and its significance in celestial navigation
USEFUL FOR

Astronomers, astrophysicists, and students of planetary science who seek to deepen their understanding of planetary motion and the dynamics of heliocentric latitude.

Mikael17
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TL;DR
Are lower / higher points of Heliocentric Latitude always taking place same time ervery year.?
By following the link below you can see (an animation) showing how the planets that orbiting the Sun each year have their lowest / highest position (relative to the Sun's equator).

The lowest point of the Earth is seen every year in the month of September, (and the highest position of the Earth occurs in March).

My question is whether these "points" over time are immovably fixed, or whether they "move" / "rotate" - in the same way that perihelion also moves (for example Mercury's perihelion precession).

If these "points" move over time, what is the reason and how much do they move?



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Mikael17 said:
The lowest point of the Earth is seen every year in the month of September, (and the highest position of the Earth occurs in March).

My question is whether these "points" over time are immovably fixed, or whether they "move" / "rotate" - in the same way that perihelion also moves (for example Mercury's perihelion precession).

If these "points" move over time, what is the reason and how much do they move?
The plane of each orbit is close to the ecliptic. The latitudinal movement modelled in the graphics is a function of the planet's movement on those tilted orbital planes.

The axis of planet rotation is independent of the planet's orbital plane about the Sun. For that reason, the timing of the two effects will be asynchronous.

The periods are not so much determined, as they are described by polynomials having hundreds of complex coefficients.

The year is different for each planet. Apsidal precession is the rotation of the long axis of the orbit in the planet's orbital plane.
https://en.wikipedia.org/wiki/Apsidal_precession
Cause: "The apsidal precessions of the Earth and other planets are the result of a plethora of phenomena, of which a part remained difficult to account for until the 20th century when the last unidentified part of Mercury's precession was precisely explained. "
 

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