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  2. R Lyrae - Wikipedia

    en.wikipedia.org/wiki/R_Lyrae

    In the near-infrared J band, it is brighter than the nearby Vega. R Lyrae is unusual in that it is a red star with a high proper motion, greater than 50 milliarcseconds a year. [ 8 ] It is one of the brightest stars at the K band, having an apparent magnitude of −2.08, only 14 stars are brighter.

  3. Lyra - Wikipedia

    en.wikipedia.org/wiki/Lyra

    In the equatorial coordinate system, the right ascension coordinates of these borders lie between 18 h 14 m and 19 h 28 m, while the declination coordinates are between +25.66° and +47.71°. [12] The International Astronomical Union (IAU) adopted the three-letter abbreviation "Lyr" for the constellation in 1922.

  4. Right ascension - Wikipedia

    en.wikipedia.org/wiki/Right_ascension

    Right ascension is measured eastward up to 24 h along the celestial equator from the primary direction. Right ascension (abbreviated RA; symbol α) is the angular distance of a particular point measured eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point in question above the Earth. [1]

  5. Longitude of the ascending node - Wikipedia

    en.wikipedia.org/wiki/Longitude_of_the_ascending...

    In this case, the longitude is also called the right ascension of the ascending node (RAAN). The angle is measured eastwards (or, as seen from the north, counterclockwise) from the FPA to the node. [2] [3] An alternative is the local time of the ascending node (LTAN), based on the local mean time at which the spacecraft crosses the equator.

  6. Ring Nebula - Wikipedia

    en.wikipedia.org/wiki/Ring_Nebula

    The Ring Nebula (also catalogued as Messier 57, M57 and NGC 6720) is a planetary nebula in the northern constellation of Lyra. [4] Such a nebula is formed when a star, during the last stages of its evolution before becoming a white dwarf, expels a vast luminous envelope of ionized gas into the surrounding interstellar space.

  7. National Register of Historic Places listings in Columbus, Ohio

    en.wikipedia.org/wiki/National_Register_of...

    July 18, 1974 : West of High Street [1] No: Site and its coordinates are restricted 22 # Truman and Sylvia Bull Coe House: Truman and Sylvia Bull Coe House: May 10, 2006 : 75 E. Lakeview Ave. No: 23 # Columbia Building

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