Dec 1, 2020 · The generic word for a celestial body is ἄστρον “Periapsis” would mean “the point closest to the point closest to the body.” Nonsense. The proper word is “periastron”: “periapse” …

I'm looking for a mathematical justification of the longitude of periapsis as it makes no mathematical sense to me as a notion. By definition, it is the sum of the argument of periapsis …

Following on from a previous question about the interesting Hulse Taylor Binary Pulsar. BACKGROUD Weisberg & Taylor, 2004 present a graph showing the change in …

May 6, 2021 · Usually, how is phase=0 defined? It is relative to the line of apses perhaps with phase=0 at periastron? The true anomaly, $\theta$, is the angle between the current location …

Mar 20, 2022 · For phase folding I need orbital period P and time of periastron passage T. I have determined the period by plotting a Lomb-Scargle periodogram but I'm unable to find a method …

The argument of periastron, which is already in the database, IS the same thing as the argument of perihelion, minus some nomenclature. I think instead you are looking for the RAAN (Right …

As you see, that phase goes from 0 to 1, and I know it has to do with the time of passage from the periastron and the data time (the HJD column), but I'm not able to derive this number in the …

In orbital dynamics, there exist the argument of periastron (symbol ω) as well as the longitude of periastron (symbol π [or ϖ but may lead to confusion) ), which is equal to the argument of …

Apr 14, 2022 · near synchronization of revolution and rotation at periastron Kepler's 2nd law says that a planet sweeps out equal area in equal time from the star. Periastron is where the planet …

Dec 13, 2021 · I do not think there is a definitive list of post-Keplerian parameters. I would argue there is some ambiguity in the definition of a post-Keplerian parameter. Kramer et al. cite …