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I would like to get the data of ecliptic line with respect to celestial equator for a particular day. Is there any specific URL that can give me this. I only have data for declination of Sun and the other planets and i dont think i could construct data of the ecliptic line from that. Any help on this would be appreciated. Please apologise if this question is really vague and not clear.

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  • $\begingroup$ What sort of timespan are you interested in? The obliquity of the ecliptic changes slowly. $\endgroup$
    – PM 2Ring
    Nov 18, 2019 at 18:17
  • $\begingroup$ May be my question is wrong? i need daily data of full ecliptic line that covers the earth wrt latitude and longitude. $\endgroup$
    – Rasika
    Nov 19, 2019 at 2:21
  • $\begingroup$ You said the data of ecliptic line with respect to celestial equator for a particular day. As @PM2Ring notes, the ecliptic is pretty much fixed with respect to the celestial equator. To a good approximation, it's simply a sine wave with respect to the equator, with amplitude of about 23.44 degrees, the 0 crossings at 0h and 12h, the max value at 6h and the min value at 18h. en.wikipedia.org/wiki/Position_of_the_Sun gives formulas for the position of the Sun and the path of the Sun is, by definition, the ecliptic. $\endgroup$
    – user21
    Nov 19, 2019 at 4:45
  • $\begingroup$ How can i draw one when Sun is at different declination. Say today it is at -20, any example will be helpful. thanks for your help $\endgroup$
    – Rasika
    Nov 19, 2019 at 5:00

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