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” is a …

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 and the lon...

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

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 of the orbiting …

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 to …

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 periastron …

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 interval …

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 ascension …

Apr 14, 2022 · According to Hut [1981], for eccentric orbits, pseudo-synchronous states are states of near synchronization of revolution and rotation at periastron Kepler's 2nd law says that a planet …

Oct 20, 2023 · The date that I see in Wikipedia is a calculated date based on two and one-half 50.09 year orbits following the periastron epoch of 1894.13 giving a date of 2019.34.