oblateness


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ob·late 1

 (ŏb′lāt′, ŏ-blāt′)
adj.
1. Having the shape of a spheroid generated by rotating an ellipse about its shorter axis.
2. Having an equatorial diameter greater than the distance between poles; compressed along or flattened at the poles: Planet Earth is an oblate solid.

[Probably New Latin oblātus : Latin ob-, toward; see ob- + Latin (prō)lātus; see prolate.]

ob′late′ly adv.
ob′late′ness n.

ob·late 2

 (ŏb′lāt′)
n.
1. A layperson dedicated to religious life, especially such a layperson who is affiliated with but not a member of a monastic order.
2. Oblate Roman Catholic Church A member of one of various religious communities whose members are bound by less stringent vows than those required of monastic orders.

[Medieval Latin oblātus, from Latin, past participle of offerre, to offer; see offer.]

oblateness

(ɒbˈleɪtnəs)
n
the state of having an oblate shape
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.oblateness - the property possessed by a round shape that is flattened at the poles; "the oblateness of the planet"
bulginess, roundedness - the property possessed by a rounded convexity
References in periodicals archive ?
Other factors also affect the planets orbits, such as the Suns oblateness (how much it bulges in the middle, rather than being a perfect sphere) and how much it warps space-time by virtue of its goliath size, which is described by relativity theory.
Looking at subtle changes in Mercury's orbit, the researchers also arrived at an improved estimate of the sun's oblateness.
By following its brightness variations over four years, the observers watched the star expand and contract slightly as sound waves rang through its interior, and from that information they determined its oblateness.
Additionally, some sensible assumptions are made for the same purpose: (1) the center of mass of the system moves on a Keplerian orbit, (2) the perturbations such as atmospheric drag and Earth oblateness, are negligible, and (3) the eccentricity of the orbit is small and would not induce the system into chaos motion [19].
The influences of lunar-solar perturbations, Earth's oblateness, and atmospheric drag are considered to predict the reentry time more accurately [1, 8, 9].
Oblateness can be considered as a sign of internal cohesive forces within an object and these are absent within a gaseous star.
According to (36), the perturbation potential function due to the Earth's oblateness is given by:
Such activity can lead to changes of oblateness and angular momentum and, through gravity coupling, to orbital period modulation.
Ocean cooling: Constraints from changes in Earth's dynamic oblateness (J 2) and altimetry.
Thus, the oblateness of a planet causes apsides of particle orbits in and near the equatorial plane to precess in the direction of the orbit and lines of nodes of nearly equatorial orbits to regress.