LUNAR CONSTANTS
Synodical revolution, or interval from new moon to new moon. Sy nodical rotation, or interval from sunrise to sunrise on the same formation | 29d.5305887 (29d 12h 44m 2.s684) |
Sidereal revolution, or interval in passing from one star to the same star again | 27d.3216614 (27d 7h 43m 11.s545) |
Tropical revolution, or interval in passing from the vernal equinox to the same point again | 27.d321582 (27d 7h 43m 4.s68) |
Anomalistic revolution, or interval in passing from perigee to perigee | 27.d55460 (27d 13h 18m 37.s44) |
Nodical revolution, or interval in passing from the ascending node to the ascending node again | 27.d21222 (27d 5h 5m 35.s81) |
Eccentricity of Orbit | 0.05490807 |
Inclination of Orbit to Ecliptic | 5° 8′ 40″ |
Inclination of Equator to Ecliptic | 1° 32′ 9″ |
Maximum geocentric libration in longitude | 7° 45′ |
Maximum geocentric libration in latitude | 6° 44′ |
Maximum geocentric libration | 10° 16′ |
Maximum diurnal libration | 1° 1′ 28.″8 |
Maximum physical libration | 3.′0 |
Surface of the Moon visible at one time or another | 0.59 |
Surface of the Moon never visible | 0.41 |
Distance, maximum | 252,972 miles (407,116 km.) |
Distance, minimum | 221,614 miles (356,650 km.) |
Distance, mean | 238,840 miles (384,372 km.) |
Diameter, maximum | 33′ 33″-20 |
Diameter, minimum | 29′ 23″-65 |
Diameter, mean | 31′ 08″ |
Diameter, linear | 2,163 miles (3,481 km.) |
Mass | 0.01228 or (illegible text) of the Earth |
Surface | 0.07448 or (illegible text) of the Earth |
Volume | 0.02033 or (illegible text) of the Earth |
Density | 0.60419 of the Earth |
Density | 3.444 Water being unity |
Force of Gravity at the surface | 0.16489 or 16064 of the Earth |
Angle subtended by one degree of selenographical longitude or latitude at the centre of the Moon's disk when at its mean distance | 16.″ 566 |
Linear value of the same | 18.871 miles (30.370 km.) |
Selenographical are at the centre of the Moon's disk, when at mean distance subtending an angle of one second of are | 3′ 37.″ 31 |
Linear value of the same | 1.139 miles (1.833 km.) |
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