Lunation

Lunation
From LoveToKnow 1911
LUNATION, the period of return of the moon (luna) to the same position relative to the sun; for example, from full moon to full moon. Its duration is 2 9.530588 4 days.

Lunation
The mean time for one lunar phase cycle (i.e., the synodic period of the ) is 29.530589 days, or 29 days, 12 hours, 44 minutes, 3 seconds. More specifically, a lunation is also commonly defined as the mean time between successive .

lunation
the time between two successive new moons; approximately 29.5 days
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lunation: the time interval between successive New Moons. The mean interval is 29 days 12 hours 44 minutes 3 seconds (the synodic month) but, because of the perturbing action of the sun, ...

Lunation The period of time between two consecutive New Moons.
Magnitude Brightness scale of stellar objects. From one magnitude to the next the ratio of brightness is the 5th root of 100, or approximately 2.52.

Lunation- the interval between one new moon and the next: that is, 29 days, 12 hours, and 44 minutes
MACHO- an acronym for "Massive Compact Halo Object" - supposed dark, massive objects surrounding our galaxy ...

Lunation
the interval of a complete lunar cycle, between one new Moon and the next. A lunation is equal to 29 days, 12 hours, and 44 minutes.
M ...

Lunation. One complete cycle of phases by the Moon, 29.53 days. A lunation is also known as a Synodic month.
M
M. The prefix used for the 109 objects that were catalogued by Charles Messier.

Lunation
Period between new moons. 29 days 12 hours 44 minutes.
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The lunation length used in System B has also been attributed to Kidinnu; it is 29 days + 191 time degrees + 1/72 of a time degree ("barley corn") = 29d 31:50:8:20 (sexagesimal) = 29d + 12h + 793/1080h (Hebrew chelek) = 29.53059414...

lunation (NASA SP-7, 1965) = synodical month. lune (NASA SP-7, 1965) That part of the surface of a sphere bounded by halves of two great circles. lunicentric (NASA SP-7, 1965) = selenocentric.

The synodic period of the moon, which is called the lunar month, or lunation, is 291/2 days long; it is longer than the sidereal month. The moon is full when it is at opposition.

5 days for the Moon to get back to the same position in the Earth-Moon-Sun system to complete one lunation (from one New Moon to the next New Moon). Because it takes 27.3 days to orbit Earth the Moon rises at different times each night.

Already al-Biruni (Qanun VII.2.II) and Copernicus (de revolutionibus IV.4) noted that the period of 4,267 lunations is actually about 5 minutes longer than the value for the eclipse period that Ptolemy attributes to Hipparchus.

The Hermetic Lunar Week Calendar is one of many proposed reforms to the Gregorian Calendar. The lunation is divided into the four Moon Phases and has 6, 7, 8, or 9 days depending on the actual time difference between the Full Moon, First Quarter, ...

Well, it's the number of lunations since a new moon in December 2000, so the fraction after the point tells you how full the moon is. Dicard the number before the point and look at the other bit, if it's: ...

Among the Xhosa it was believed that 'the world ended with the sea, which concealed a vast pit filled with new moons ready for use', i.e. that each new lunation begins with a truly new moon.

33 days, or 223 lunations, at the end of which the centers of the Sun and Moon return so nearly to the relative positions of the beginning that all the eclipses (see eclipse) of the period recur approximately as before, ...

equal to 6 × 1012 miles limb the edge of the apparent disc of a celestial object lunar eclipse occurs when the Moon passes through the shadow cast by the Earth; the three types of lunar eclipses are partial, penumbral and total lunation ...

Also called lunation. synodic period The interval of time between and planetary configuration of a celestial body, with respect to the sun, and the next successive same configuration of that body, ...