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In celestial mechanics, a Kepler orbit (or Keplerian orbit, named after the German astronomer Johannes Kepler) is the motion of one body relative to another, as an ellipse, parabola, or hyperbola, which forms a two-dimensional orbital plane in three-dimensional space.
The mean angular movement relative to an imaginary observer at the Earth–Moon barycentre is 13.176 ° per day to the east (J2000.0 epoch). Minimum, mean and maximum distances of the Moon from Earth with its angular diameter as seen from Earth's surface, to scale.
β Comae Berenices in optical light. Beta Comae Berenices (β Comae Berenices, β Com) is a main sequence dwarf star in the northern constellation of Coma Berenices.It is located at a distance of about 29.95 light-years (9.18 parsecs) from Earth.
Coma Berenices is an ancient asterism in the northern sky, which has been defined as one of the 88 modern constellations.It is in the direction of the fourth galactic quadrant, between Leo and Boötes, and it is visible in both hemispheres.
In the equatorial coordinate system the location is: RA 17 h 45 m 40.04 s, Dec −29° 00′ 28.1″ (J2000 epoch). In July 2022, astronomers reported the discovery of massive amounts of prebiotic molecules, including some associated with RNA, in the Galactic Center of the Milky Way Galaxy. [12] [13]