Motions of the Moon

by K.E. Chilton, F.R.A.S.

1. Daily apparent revolution:

Like all celestial bodies, the moon appears to revolve around the Earth, once every 24 hours. This is caused by the rotation of the Earth. However, the moon revolves eastward in its orbit, ie: in the same direction as the Earth. Therefore, it takes a little longer for the earth to catch up, lengthening the apparent revolution to 24h 50m.

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Members 1936

List of officers and members for 1936. (This booklet was also scanned by, and is in, NASA's ADS.)

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Members 1931

List of officers and members for 1931. (This booklet was also scanned by, and is in, NASA's ADS.)

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Meeting 19401126

Evening Meeting for RASC Ottawa Centre, Dominion Observatory, November 26, 1940.

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RASC Library 1911

1911 catalogue of the RASC's books, periodicals, and lantern slides.

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Asteroid (5262) Brucegoldberg

Named in honor of Bruce A. Goldberg, scientist and astronomer at Caltech's Jet Propulsion Laboratory and the USAF Phillips Laboratory, as well as friend and colleague of the discoverer. He received his Ph.D. from the University of British Columbia and has conducted research in modeling and spectroscopy of Io and comet 21P/Giacobini-Zinner, on adaptive optics and as guest observer at a variety of telescopes throughout the world for over twenty years. Named endorsed by R. Bambery, K. Lawrence and his many friends at JPL.

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Dr. William Bottke

Dr. William Bottke is the Director of the Department for Space Studies at Southwest Research Institute (SwRI) in Boulder, Colorado. Bottke is also the Director of the Center for Lunar Origin and Evolution (CLOE) of NASA’s Lunar Science Institute. His research interests include the collisional and dynamical evolution of small body populations throughout the solar system (e.g., asteroids, comets, irregular satellites, Kuiper belt objects, meteoroids, dust) and the formation and bombardment history of planetesimals, planets and satellites.

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JRASC 2012 August

In this issue:

  • Castle Frederick Observatory
  • So, What’s Up with the Casinos?
  • A Visit to SNOLAB
  • 1681 Medal
  • Gears and Periodic Errors
  • Fifty Years of Astrophotography
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Asteroid (315186) Schade

Since 2001, David Joseph Schade (b. 1953) has served as leader for the NRC Canadian Astronomy Data Centre which has contributed numerous innovations to data management for, inter alia, HST, CFHT, Gemini, JCMT and MOST observatories and to the Virtual Observatory.

Orbit type: Mars-crosser

Reference: MPC 79913

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Asteroid (315012) Hutchings

John Barrie Hutchings (b. 1941) uses observations from the X-ray to the radio regimes to probe intrinsically-luminous stars, X-ray binaries, neutron stars and stellar-mass black holes, and active galactic nuclei and quasars.

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