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  2. Quadrature (astronomy) - Wikipedia

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

    Diagram showing the eastern and western quadratures of a superior planet like Mars. In spherical astronomy, quadrature is the configuration of a celestial object in which its elongation is a right angle (90 degrees), i.e., the direction of the object as viewed from Earth is perpendicular to the position of the Sun relative to Earth.

  3. Orbit of Mars - Wikipedia

    en.wikipedia.org/wiki/Orbit_of_Mars

    Extra-close oppositions of Mars happen every 15 to 17 years, when we pass between Mars and the Sun around the time of its perihelion (closest point to the Sun in orbit). The minimum distance between Earth and Mars has been declining over the years, and in 2003 the minimum distance was 55.76 million km, nearer than any such encounter in almost ...

  4. Astronomical unit - Wikipedia

    en.wikipedia.org/wiki/Astronomical_unit

    This is because the distance between Earth and the Sun is not fixed (it varies between 0.983 289 8912 and 1.016 710 3335 au) and, when Earth is closer to the Sun , the Sun's gravitational field is stronger and Earth is moving faster along its orbital path. As the metre is defined in terms of the second and the speed of light is constant for all ...

  5. Ecliptic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Ecliptic_coordinate_system

    Ecliptic longitude or celestial longitude (symbols: heliocentric l, geocentric λ) measures the angular distance of an object along the ecliptic from the primary direction. Like right ascension in the equatorial coordinate system, the primary direction (0° ecliptic longitude) points from the Earth towards the Sun at the March equinox. Because ...

  6. Vakri grahas - Wikipedia

    en.wikipedia.org/wiki/Vakri_grahas

    In Hindu astrology, Vakri grahas are those planets of the Solar System other than the Sun and the Moon that appear to move backwards, which apparent motion is due to Earth’s orbit. Vakri in Sanskrit means twisted or crooked; it also means indirect, evasive and ambiguous. A Vakri graha is also known as the Saktha graha. Vakragati confers ...

  7. List of conjunctions (astronomy) - Wikipedia

    en.wikipedia.org/wiki/List_of_conjunctions...

    Angle distance Planet Elongation to Sun January 18, 2009 06:19:19 Mercury 3°15' north of Jupiter 4.7° East January 23, 2009 15:34:10 Venus 1°24' north of Uranus 46.3° East January 26, 2009 18:23:39 Mercury 4°25' north of Mars 13.5° West February 17, 2009 09:35:27 Mars 35' south of Jupiter 18.8° West February 24, 2009 03:08:31 Mercury

  8. Everything to Know About the Annual Profections Astrology ...

    www.aol.com/everything-know-annual-profections...

    This form of predictive astrology uses your birthdate to identify personalized themes for the year ahead. Learn how to use the annual profections wheel in 2024.

  9. Astronomy on Mars - Wikipedia

    en.wikipedia.org/wiki/Astronomy_on_Mars

    The maximum angular separation of the Earth and Moon varies considerably according to the relative distance between the Earth and Mars: it is about 25′ when Earth is closest to Mars (near inferior conjunction) but only about 3.5′ when the Earth is farthest from Mars (near superior conjunction). For comparison, the apparent diameter of the ...