Table summary:

Planets Declination at N/S Max and Perihelion / Aphelion

Planet.....Sequence.....Perih Deg......Dec Max......Aph Deg......Dec Max

Mercury.....P > Mx N......25º 49’N.......28º 32’N....25º 43’ S......28º 32’S

Venus.......Mx N > P......20º 10’N.......24º 26’N.....20º 20’S......24º 25’S

Earth.......Mx N > P.......22º <>N........23º 26’ N....22º <>S.......23º 26’S

Mars........Mx N > A.......11º <>N........24º 40’S.....11º N..........24º 40’N

Jupiter.....P > Mx N.......22º <>N........23º 14’ N....04º 57’S......23º 14’ S

Saturn......P > Mx N.......22º 30’ N......22º 32’ N....22º 30’ S.....22º 32’ S

(Based on NASA Horizons data: https://ssd.jpl.nasa.gov/horizons.cgi)

One possible surprising conclusion is that Planets are slowed in their orbits more by reaching maximum declination than by either Perihelion or Aphelion. For example Mercury spends 1 day* at ±25º (Aphelion/Perihelion) and 4 days at ±28º North/South Maximum declination. Venus spends 13 days at ±24º North/South Maximum declination, but only 3 days at ±20º (Aphelion/Perihelion). Earth spends 23 days at ±23º North/South Maximum declination, but only 9 days at ±22º (Aphelion/Perihelion). For Mercury, Venus and Earth, the objection may be raised that Max. Declination and Aphelion/Perihelion occur close together. However, the same “breaking” effect is true of Mars, which spends 54 days at ±24º North/South Maximum declination and only 6 days at ± 11º Aphelion or Perihelion. *(day number can vary slightly). What mechanism is at play here? Also raises questions with regard to Milankovitch Eccentricity assumptions.