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Denoted with the symbol Ω, it is the angle from a specified reference direction, called the origin of longitude, to the direction of the ascending node (☊), as measured in a specified reference plane. [1] The ascending node is the point where the orbit of the object passes through the plane of reference, as seen in the adjacent image.
Local time of the ascending node, an orbital element Topics referred to by the same term This disambiguation page lists articles associated with the title LTAN .
Much of Tamil grammar is extensively described in the oldest available grammar book for Tamil, the Tolkāppiyam (dated between 300 BCE and 300 CE). Modern Tamil writing is largely based on the 13th century grammar Naṉṉūl , which restated and clarified the rules of the Tolkāppiyam with some modifications.
An orbiting body's mean longitude is calculated L = Ω + ω + M, where Ω is the longitude of the ascending node, ω is the argument of the pericenter and M is the mean anomaly, the body's angular distance from the pericenter as if it moved with constant speed rather than with the variable speed of an elliptical orbit.
The primary direction of the system is the March equinox, the ascending node of the ecliptic (red) on the celestial equator (blue). Right ascension is measured eastward up to 24 h along the celestial equator from the primary direction.
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In celestial mechanics, true longitude is the ecliptic longitude at which an orbiting body could actually be found if its inclination were zero. Together with the inclination and the ascending node, the true longitude can tell us the precise direction from the central object at which the body would be located at a particular time.
The Tamil script (தமிழ் அரிச்சுவடி Tamiḻ ariccuvaṭi [tamiɻ ˈaɾitːɕuʋaɽi]) is an abugida script that is used by Tamils and Tamil speakers in India, Sri Lanka, Malaysia, Singapore and elsewhere to write the Tamil language. [5]