Talk:Nodal precession

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" If the orbit is retrograde the increases and the longitude of the ascending node decreases."

should have been: If the orbit is retrograde, this increases the longitude of the ascending node i.e. node precesses eastward.

J2 Formula edit

Latest comment: 6 years ago1 comment1 person in discussion

Does anyone have a citation/source for the given J2 formula? I've always seen J2 derived as part of a harmonic expansion of measured gravity and not as an analytic formula. — Preceding unsigned comment added by Spaceman13 (talk • contribs) 15:16, 30 April 2018 (UTC)Reply

précession apparente d'un satellite à 56° prograde et 800km altitude edit

Latest comment: 3 years ago1 comment1 person in discussion

Une maquette présentant les angles d'ascension droite de l'équateur céleste me fait comprendre que si la précession nodale calculée est de -3.68°, ET que le soleil présente un gain de 0.98° par jour, la somme qui représente la précession apparente est une addition qui atteint 4.66° par jour. Ardéjé85 (talk) 16:14, 14 August 2020 (UTC)Reply

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