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  2. USNO CCD Astrograph Catalog - Wikipedia

    en.wikipedia.org/wiki/USNO_CCD_Astrograph_Catalog

    Edition Description UCAC-1 The first preliminary edition, published in March 2000, gives the positions and proper motions of over 27 million stars in the southern hemisphere in the brightness range 8–16.

  3. User Account Control - Wikipedia

    en.wikipedia.org/wiki/User_Account_Control

    Windows 1.0–3.11 and Windows 9x: all applications had privileges equivalent to the operating system;; All versions of Windows NT up to, and including, Windows XP and Windows Server 2003: introduced multiple user-accounts, but in practice most users continued to function as an administrator for their normal operations.

  4. United Aircraft Corporation - Wikipedia

    en.wikipedia.org/wiki/United_Aircraft_Corporation

    On 30 November 2021, the UAC board of directors approved the annexation to the corporation of both military aircraft producers Mikoyan and Sukhoi, previewed for 2022. The daily management of both is already made by UAC. [53] In January 2022, UAC shareholders approved the annexation. [54] As of 2022, UAC was 88 percent owned by Rostec. [55]

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  6. Smithsonian Astrophysical Observatory Star Catalog - Wikipedia

    en.wikipedia.org/wiki/Smithsonian_Astrophysical...

    Online version of the SAO Catalog was created by the HEASARC in March 2001 based on ADC/CDS Catalog I/131A, which itself is originally derived from a character-coded machine-readable version of the Smithsonian Astrophysical Observatory Star Catalog (SAO, SAO Staff 1966) prepared by T.A. Nagy in 1979, and subsequently modified over the next ...

  7. Tycho-2 Catalogue - Wikipedia

    en.wikipedia.org/wiki/Tycho-2_Catalogue

    To enable rapid access of specific stars in the catalogue, WCSTools software numbers each star using its Guide Star region number (0001 to 9537) and a five-digit star number within each region, separated by a decimal point. sty2 lists Tycho-2 stars by number or sky region. imty2 lists the Tycho-2 stars within an IRAF or FITS image using the world coordinate system defined in its header.

  8. Abell catalogue - Wikipedia

    en.wikipedia.org/wiki/Abell_catalogue

    The standard format used to refer to Abell clusters is: Abell X, where X = 1 to 4076.E.g. Abell 1656. Alternative formats include: ABCG 1656; AC 1656; ACO 1656; A 1656, and A1656. Abell himself preferred the latter, but in recent years ACO 1656 has become the preferred format among professional astronomers and is the one recommended by the Centre de Données astronomiques de Strasbourg

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