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Sunday, March 1, 2020

2020 CD3 - new temporary mini moon

I understand looking at Tony Dunn's simulations (press orbit simulator view button in this page provided by Bill Gray's project pluto) and comments in MPML that chaos is playing a big role here.

For this reason, I am not sure that a backward simulation can be useful to get an idea of the asteroid behaviour.
Probably not .. .but just for curiosity let's do it and let's assume for a moment that 2020 CD3 is a natural object.

I generated 100 clones trying to achieve the "same" orbital parameters and sigma as provided by the JPL solution (Horizons Web Interface)


  Clones   Target
  mean sd   mean sd
q 1.00502954166 2.714862e-05   1.00503150094 2.7143e-05
e 0.01726251622 2.418728e-05   0.01726090999 2.4152e-05
i 0.6401240941 0.00012806312   0.64011545932 0.0001279
peri 46.79953402529 0.09813338369   46.79424491192 0.098245
node 83.09078802026 0.05641077311   83.08730279228 0.056433
tp 2458877.63623114 0.04030051738   2458877.6339221 0.040361

I gave a look at close encounters with other planets a part Eeath-Moon itself.
It seems that in order to see these hypothetical close encounters we need to go back many centuries.
I found that these encounters are more likely and more recent with Venus rather than Mars.
Could this be a hint that the origin of this object is from the inner part of the solar system?

Kind Regards,
Alessandro Odasso

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