Tilt of the Earth's polar axis as measured from the perpendicular to the plane of the Earth's orbit around the sun. The angle of this tilt varies from 22.5 to 24.5° over a 41,000 year period. Current obliquity is 23.5°.
deviation from proper moral conduct; immorality; perversity
The tilt of the earth's axis. It represents the angle from the perpendicular to the plane of the earth's orbit.
The angle by which the spin axis of a planet to the plane of its ecliptic differs from 90°.
in general the angle between the equatorial and orbital planes of a body or, equivalently, between the rotational and orbital poles. For the Earth the obliquity of the ecliptic is the angle between the planes of the equator and the ecliptic.
the presentation during labor of the head of the fetus at an abnormal angle
of the Ecliptic: The difference between the plane of the earth's equator and the plane of her orbit. These have a mean value of 23°26'40".16 in 1960 and diminishes 0".48 per year. (See Observations Using the Gnomon)
the angle of tilt of a planet's axis of rotation
the angle between a planet’s equator and the plane of its orbit
The angle between the planes of the celestial equator and the ecliptic, currently the earth has a 23.4 degree obliquity.
Obliquity is the angle between the plane of a planet's orbit and that of the planet's equator.
The angle between a body's equatorial plane and orbital plane.