Angle between the rotational axis and orbital axis of a body.
1The Chinese also determined the obliquity of the ecliptic eleven hundred years before our era.
2The obliquity of the ecliptic is, to a degree, sustained by the relationship between Moon and Earth.
3Technically, the difference is due to the eccentricity of the earth's orbit and the obliquity of the ecliptic.
4By these he had calculated the obliquity of the ecliptic, closely enough to serve for a thousand years after.
5Pythagoras taught the obliquity of the ecliptic, probably learned in Egypt, and the identity of the morning and evening stars.
6Belt, on the other hand, held that the cold was due to an increase in the obliquity of the ecliptic.
7Pythagoras, born 580 B.C., taught the obliquity of the ecliptic, probably learned in Egypt, and the identity of the morning and evening stars.
8He had investigated the obliquity of the ecliptic with extreme care, so far as the circumstances of astronomical observation would at that time permit.
9They determined the obliquity of the ecliptic, one thousand one hundred years before our era, to be 23 degrees 54' 3-15.
10"He determined," says Delambre, "the position of the stars by right ascensions and declinations, and was acquainted with the obliquity of the ecliptic.
Translations for obliquity of the ecliptic