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Rosiestep (talk) 21:23, 2 January 2012 (UTC)[reply]

Thank you for uploading File:Mercury perturbation comparison.png. However, it currently is missing information on its copyright and licensing status. Wikipedia takes copyright very seriously. It may be deleted soon, unless we can verify that it has an acceptable license status and a verifiable source. Please add this information by editing the image description page. You may refer to the image use policy to learn what files you can or cannot upload on Wikipedia. The page on copyright tags may help you to find the correct tag to use for your file. If the file is already gone, you can still make a request for undeletion and ask for a chance to fix the problem.

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If you have any questions, please feel free to ask them at the media copyright questions page. Thanks again for your cooperation. Stefan2 (talk) 18:04, 6 March 2012 (UTC)[reply]

		Research Participation Barnstar
		For your participation in the survey for Anonymity and conformity on the internet. Michael Tsikerdekis (talk) 13:02, 12 March 2012 (UTC)[reply]

Thank you for all of your work to the perturbation (astronomy) article. I agree that Ecliptic is a mess. -- Kheider (talk) 21:21, 13 March 2012 (UTC)[reply]

Thanks. I'm glad someone is reading it! How do you think it reads? Feel free to offer criticism. Do the diagrams make sense? I'm not quite done with it, but close. I really don't want to make it one of those "equation dumps".Ecliptic is going to be a project. It looks like a conglomeration of everybody's pet ideas for the past 5 years.

Thanks for your improvements to the "Meridian circle" article. Jc3s5h (talk) 23:13, 7 June 2012 (UTC)[reply]

You're welcome. A few more small improvements, but its basically done at this point. Tfr000 (talk) 14:56, 8 June 2012 (UTC)[reply]

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Fixed it. Tfr000 (talk) 20:28, 28 June 2012 (UTC)[reply]

Could you clarify the origin of this file, please? If it is borrowed from A. Berger's paper and retouched, then it is not an own work. If you made this from Berger's numerical data, then it is certainly your own work, but could you just upload that data instead of a PNG? I will make an SVG image to replace the ugly PNG. Incnis Mrsi (talk) 13:18, 8 September 2012 (UTC)[reply]

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Beautiful! Concise, simple, elegant. https://en.wikipedia.org/wiki/User:Tfr000#/media/File:Heliocentric_rectangular_ecliptic.png I think however it has a small mistake; the earth is tilted wrong. As the earth passes the autumnal equinox as shown, the north pole should be tilted to the left. All summer, the earth has leaned toward the sun, now it will spend six months "leaning away from the sun" (for us northerners). I am looking at this diagram on https://en.wikipedia.org/wiki/Ecliptic_coordinate_system#Rectangular_coordinates and the discussion talks about the earth passing the vernal equinox so perhaps just move the earth as-is over to the near side of the orbit. Your diagram tho, your call.

Sorry to use this venue, I don't know how to just send you a private msg Friendly Person (talk) 17:22, 30 August 2015 (UTC)[reply]

The diagram shows the Sun, as seen from Earth, at the vernal equinox, which means Earth's northern hemisphere will be going into summer. Yes, Earth as seen from the Sun is at the autumnal equinox, but that's not how seasons are reckoned. Tfr000 (talk) 15:32, 24 January 2016 (UTC)[reply]

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Hi, Tfrooo, thanks for your contribution of Perturbation_(astronomy).

I have a question of the figure: https://commons.wikimedia.org/wiki/File:Mercury_perturbation_comparison.png

Do you have any references on it?--Mountain (talk) 17:41, 24 September 2016 (UTC)[reply]

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