Definitions for obliquity of the ecliptic
obliq·ui·ty of the eclip·tic

WikipediaRate this definition:0.0 / 0 votes

1. obliquity of the ecliptic

   In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane. It differs from orbital inclination. At an obliquity of 0 degrees, the two axes point in the same direction; that is, the rotational axis is perpendicular to the orbital plane. The rotational axis of Earth, for example, is the imaginary line that passes through both the North Pole and South Pole, whereas the Earth's orbital axis is the line perpendicular to the imaginary plane through which the Earth moves as it revolves around the Sun; the Earth's obliquity or axial tilt is the angle between these two lines. Earth's obliquity oscillates between 22.1 and 24.5 degrees on a 41,000-year cycle. Based on a continuously updated formula (here Laskar, 1986, though since 2006 the IMCCE and the IAU recommend the P03 model), Earth's mean obliquity (without taking into account the nutation in obliquity) is currently about 23°26′10.6″ (or 23.43629°) and decreasing (about 46.806"/Julian century, on average, from 1 January 2023 to 2 January 2123, with Laskar's model, or 46.833"/Julian century, with P03 model). According to P03 astronomical model, its value (without taking into account the nutation in obliquity) was 23°26′11.120″ (23.4364172008°) on 1 January 2022, 0 TT, and 23°26′10.634″ (23.4362871883°) on 1 January 2023, 0 TT. Over the course of an orbital period, the obliquity usually does not change considerably, and the orientation of the axis remains the same relative to the background of stars. This causes one pole to be pointed more toward the Sun on one side of the orbit, and more away from the Sun on the other side—the cause of the seasons on Earth.

Dictionary of Nautical TermsRate this definition:0.0 / 0 votes

1. obliquity of the ecliptic

   The angle between the planes of the ecliptic and the equator, or the inclination of the earth's equator to the plane of her annual path, upon which the seasons depend: this amounts at present to about 23° 27′.

How to pronounce obliquity of the ecliptic?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

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   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

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   Oliver

   British

   Wendy

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   Fred

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   Tessa

   South African

How to say obliquity of the ecliptic in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of obliquity of the ecliptic in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of obliquity of the ecliptic in Pythagorean Numerology is: 9

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Obliquity_of_the_Ecliptic
2. ^ Dictionary of Nautical Terms
   https://www.gutenberg.org/cache/epub/26000/pg26000-images.html#:~:text=obliquity of the ecliptic