Jupiter Red Spot Position and more

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SUMMARY

The discussion focuses on the positional analysis of Jupiter's Great Red Spot (GRS) over time, emphasizing the need for a stable coordinate system for accurate measurement. The participants suggest using the latitude based on Jupiter's stable axis of rotation and propose defining the central point of the GRS as the intersection of its minimal and maximal diameters. Concerns are raised regarding the measurement of longitude due to the GRS's unique atmospheric dynamics, including the presence of Karman vortex streets. A reference to Project Pluto's GRS data is provided for further exploration.

PREREQUISITES
  • Understanding of celestial coordinate systems
  • Familiarity with atmospheric dynamics and vortex behavior
  • Knowledge of planetary rotation and stability
  • Basic grasp of astronomical observation techniques
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  • Research celestial coordinate systems for planetary bodies
  • Explore atmospheric dynamics related to Jupiter's Great Red Spot
  • Investigate the historical data on the GRS's position and size
  • Examine the implications of Karman vortex streets in planetary atmospheres
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Astronomers, planetary scientists, and educators interested in the dynamics of Jupiter's atmosphere and the Great Red Spot's behavior over time.

Omega0
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Hi,

I would be interested in the position and the "appearing" of Jupiters red spot over many decades.
Here the first question is: What would be the best coordinate system?
Jupiters axis of rotation is very stable. So the latitude would be very interesting in my eyes.
But: How do we define the central point for the "spot" which in reality is something like an elipse?
In my eyes the easiest way would be to think of an elipse and we define the center as the crossing point between the lines of minimal and maximal diameter.
What would be the best measure for the longitude?
I think this is really problematic. In one picture I saw a nice Karman vortex street sourrounding the spot.
This is another word for: The spot is not rotating around the planet with the speed of the rest of the atmosphere in this longitude.
So my question: Is there data about the position of the red spot over time and how it is defined? The same for the "diameter" and the color range?

Thanks,
Jens
 
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