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  2. Magnetic declination - Wikipedia

    en.wikipedia.org/wiki/Magnetic_declination

    How to compensate for magnetic declination when reading a compass. In this example, the declination is 14°E (+14°), so the compass card points to a "north" 14 degrees to the East of true North. To obtain a true bearing, add 14 degrees to the bearing shown by the compass.

  3. Declination - Wikipedia

    en.wikipedia.org/wiki/Declination

    In astronomy, declination ... (1 arcsecond = ⁠ 1 / 3600 ⁠ of a degree) ... This page was last edited on 14 December 2024, at 16:37 ...

  4. Right ascension - Wikipedia

    en.wikipedia.org/wiki/Right_ascension

    Since a complete circle contains 24 h of right ascension or 360° (degrees of arc), ⁠ 1 / 24 ⁠ of a circle is measured as 1 h of right ascension, or 15°; ⁠ 1 / 1440 ⁠ of a circle is measured as 1 m of right ascension, or 15 minutes of arc (also written as 15′); and ⁠ 1 / 86400 ⁠ of a circle contains 1 s of right ascension, or 15 ...

  5. Equatorial coordinate system - Wikipedia

    en.wikipedia.org/wiki/Equatorial_coordinate_system

    Declination (vertical arcs, degrees) and hour angle (horizontal arcs, hours) is shown. For hour angle, right ascension (horizontal arcs, degrees) can be used as an alternative. The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

  6. Astronomical coordinate systems - Wikipedia

    en.wikipedia.org/wiki/Astronomical_coordinate...

    These equations [14] ... Angles in the degrees ( ° ), minutes ( ′ ), and seconds ( ″ ) ... The cosine of a latitude (declination, ecliptic and Galactic latitude ...

  7. Polar distance (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Polar_distance_(astronomy)

    Here body will be on declination circle ( XY). The distance between PY or PX will be the Polar distance of the body. NP=ZQ=Latitude of observer NY and NX will be the True altitude of body at that instant. Polar distance (PD) = 90° ± δ Polar distances are expressed in degrees and cannot exceed 180° in magnitude. An object on the celestial ...

  8. Meridian altitude - Wikipedia

    en.wikipedia.org/wiki/Meridian_altitude

    A further correction must then be taken into account to counter the "wobble" of the earth's spin and rotation relative to the sun and planets. This is given in the declination for the body on a particular day in the year (also taken from the nautical almanac). If the declination of the body is in the opposite hemisphere (ie if you are in the ...

  9. Subsolar point - Wikipedia

    en.wikipedia.org/wiki/Subsolar_point

    is the longitude of the subsolar point in degrees, δ {\displaystyle \delta } is the declination of the Sun in degrees, T G M T {\displaystyle T_{\mathrm {GMT} }} is the Greenwich Mean Time or UTC , in decimal hours since 00:00:00 UTC on the relevant date