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  2. Celestial equator - Wikipedia

    en.wikipedia.org/wiki/Celestial_equator

    In other words, the celestial equator is an abstract projection of the terrestrial equator into outer space. [1] Due to Earth's axial tilt , the celestial equator is currently inclined by about 23.44° with respect to the ecliptic (the plane of Earth's orbit ), but has varied from about 22.0° to 24.5° over the past 5 million years [ 2 ] due ...

  3. Category:Equatorial constellations - Wikipedia

    en.wikipedia.org/wiki/Category:Equatorial...

    These constellations intersect the celestial equator and hence are not circumpolar constellations at any latitude. See also: Category:Northern constellations and Category:Southern constellations Subcategories

  4. List of stars for navigation - Wikipedia

    en.wikipedia.org/wiki/List_of_stars_for_navigation

    Another name of the star which combines a Greek letter with the possessive form of its constellation's Latin name. Etymology of common name Etymology of the common name. [9] SHA Sidereal hour angle (SHA), the angular distance west of the vernal equinox. Dec. Declination, the angular distance north or south of the celestial equator. App. magnitude

  5. Aquila (constellation) - Wikipedia

    en.wikipedia.org/wiki/Aquila_(constellation)

    Aquila is a constellation on the celestial equator. Its name is Latin for 'eagle' and it represents the bird that carried Zeus/Jupiter's thunderbolts in Greek-Roman mythology. Its brightest star, Altair, is one vertex of the Summer Triangle asterism. The constellation is best seen in the northern summer, as it is located along the Milky Way.

  6. Equatorial coordinate system - Wikipedia

    en.wikipedia.org/wiki/Equatorial_coordinate_system

    The right ascension symbol α, (lower case "alpha", abbreviated RA) measures the angular distance of an object eastward along the celestial equator from the March equinox to the hour circle passing through the object. The March equinox point is one of the two points where the ecliptic intersects the celestial equator.

  7. First point of Aries - Wikipedia

    en.wikipedia.org/wiki/First_point_of_Aries

    In diagrams using such coordinate systems, it is often indicated with the symbol ♈︎. Named for the constellation of Aries, it is one of the two points on the celestial sphere at which the celestial equator crosses the ecliptic, the other being the first point of Libra, located exactly 180° from it.

  8. Aquarius (constellation) - Wikipedia

    en.wikipedia.org/wiki/Aquarius_(constellation)

    Aquarius is an equatorial constellation of the zodiac, between Capricornus and Pisces.Its name is Latin for "water-carrier" or "cup-carrier", and its old astronomical symbol is (♒︎), a representation of water.

  9. Virgo (constellation) - Wikipedia

    en.wikipedia.org/wiki/Virgo_(constellation)

    Virgo is one of the constellations of the zodiac. Its name is Latin for maiden, and its old astronomical symbol is . Between Leo to the west and Libra to the east, it is the second-largest constellation in the sky (after Hydra) and the largest constellation in the zodiac. The ecliptic intersects the celestial equator within this constellation ...