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  2. Approach plate - Wikipedia

    en.wikipedia.org/wiki/Approach_plate

    An approach plate for the ILS or LOC approach to runway 14L at Cologne Bonn Airport, Germany. Approach plates (or, more formally, instrument approach procedure charts) are the printed or digital charts of instrument approach procedures that pilots use to fly instrument approaches during instrument flight rules (IFR) operations.

  3. Light-year - Wikipedia

    en.wikipedia.org/wiki/Light-year

    The product of Simon Newcomb's J1900.0 mean tropical year of 31 556 925.9747 ephemeris seconds and a speed of light of 299 792.5 km/s produced a light-year of 9.460 530 × 10 15 m (rounded to the seven significant digits in the speed of light) found in several modern sources [10] [11] [12] was probably derived from an old source such as C. W ...

  4. Cosmic distance ladder - Wikipedia

    en.wikipedia.org/wiki/Cosmic_distance_ladder

    The amount of shift is quite small, even for the nearest stars, measuring 1 arcsecond for an object at 1 parsec's distance (3.26 light-years), and thereafter decreasing in angular amount as the distance increases. Astronomers usually express distances in units of parsecs (parallax arcseconds); light-years are used in popular media.

  5. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    Point in a direct approach where a 3º normal visual descent can be started to achieve a safe landing and stabilized approach to the RWY - VDP (in distance) = HAT (height over terrain) / 300 (HAT is the height of the MDA read in the approach chart of the AD) VDR VHF digital radio VFO Variable-frequency oscillator: VFR visual flight rules: VG

  6. Initial approach fix - Wikipedia

    en.wikipedia.org/wiki/Initial_approach_fix

    The Initial Approach Fix (IAF) is the point where the initial approach segment of an instrument approach begins. An instrument approach procedure may have more than one Initial approach fix and initial approach segment. The initial approach fix is usually a designated intersection, VHF omnidirectional range (VOR), non-directional beacon (NDB ...

  7. List of star systems within 100–150 light-years - Wikipedia

    en.wikipedia.org/wiki/List_of_star_systems_within...

    This is a list of star systems within 100–150 light years of Earth. This list is incomplete; you can help by adding missing items. (July 2024)

  8. List of star systems within 85–90 light-years - Wikipedia

    en.wikipedia.org/wiki/List_of_star_systems_within...

    This is a list of star systems within 85–90 light years of Earth. The closest M-type red giant star, Gacrux, is in this list. [1]

  9. List of star systems within 75–80 light-years - Wikipedia

    en.wikipedia.org/wiki/List_of_star_systems_within...

    This is a list of star systems within 75–80 light years of Earth. The closest B-type star, Regulus , is in this list. This list is incomplete ; you can help by adding missing items .