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The standard gravitational parameter μ of a celestial body is the product of the gravitational constant G and the mass M of that body. For two bodies, the parameter may be expressed as G(m 1 + m 2), or as GM when one body is much larger than the other: = (+).
Mu is a lost continent introduced by Augustus Le Plongeon (1825–1908), who identified the "Land of Mu" with Atlantis. The name was subsequently identified with the hypothetical land of Lemuria by James Churchward (1851–1936), who asserted that it was located in the Pacific Ocean before its destruction. [ 1 ]
The square of this quotient is proportional to the parameter (that is, the latus rectum) of the orbit and the sum of the mass of the Sun and the body. This is a modified form of Kepler's third law. He next defines: 2p as the parameter (i.e., the latus rectum) of a body's orbit, μ as the mass of the body, where the mass of the Sun = 1,
For Voyager 1, with respect to the Sun: μ = G M {\displaystyle \mu =GM} = 132,712,440,018 km 3 ⋅s −2 is the standard gravitational parameter of the Sun r = 17 billion kilometers
In astrodynamics, canonical units are defined in terms of some important object’s orbit that serves as a reference. In this system, a reference mass, for example the Sun’s, is designated as 1 “canonical mass unit” and the mean distance from the orbiting object to the reference object is considered the “canonical distance unit”.
His writings attempt to describe the civilisation of Mu, its history, inhabitants, and influence on subsequent history and civilisations. Churchward claimed that the ancient Egyptian sun-god Ra originated with the Mu; he claimed that "Rah" was the word which the Naacals used for "sun", as well as for their god and rulers.
This will rise to 10 −6 M ☉ /year on the asymptotic giant branch, before peaking at a rate of 10 −5 to 10 −4 M ☉ /year as the Sun generates a planetary nebula. By the time the Sun becomes a degenerate white dwarf, it will have lost 46% of its starting mass. [15] The mass of the Sun has been decreasing since the time it formed.
It has around 3 times the mass and 135 times the diameter of the Sun. [22] Mu Gruis, composed of Mu 1 and Mu 2, is also an optical double—both stars are yellow giants of spectral type G8III around 2.5 times as massive as the Sun with surface temperatures of around 4900 K. [24] Mu 1 is the brighter of the two at magnitude 4.8 located around ...