September 1, 2014

AstroEvent: The Best Appearance of Mercury in 2011.

Mercury+Jupiter in the dusk. (Photo by Author).

If you’ve never seen the inner-most world of our solar system, this week is your chance. On Tuesday, March 22nd, the planet Mercury reaches a greatest elongation of 19 degrees east of the Sun.  Due to the varying angle of our ecliptic during different times of the year coupled with an eccentricity of 0.21 for Mercury’s orbit, not all apparitions of the innermost world are equal. [Read more...]

AstroEvent: A Mutual Western Elongation.

January 8th, about a half hour before sunrise looking west from Tampa, Florida. (Created by the Author in Starry Night).   

One of the more unique events of 2011 occurs this weekend. The interior planets of Mercury and Venus both reach greatest western elongation within 24 hours of each other in the dawn skies. First, Venus reaches an elongation of 47° from the Sun on Saturday, January 8th at about 16:00UT/11:00 EST. Then, about 23.6 hours later, Mercury reaches the height of its morning apparition 23° west of the Sun. [Read more...]

Astro-Event: Venus at Greatest Elongation.

Venus earlier this year as seen from Astroguyz HQ. (Photo by Author).

Venus earlier this year as seen from Astroguyz HQ. (Photo by Author).

 

   Our nearest planetary neighbor is about to put on a brilliant dusk showing. The planet Venus reaches greatest elongation, or its maximum separation from the Sun as observed from the Earth on August 19th. From there, it will begin a long dive towards inferior conjunction with the Sun on October 28th, slendering in phase from half-lit to crescent and increasing in angular size as it does so. Venus is now the brightest object high in the west at dusk. Tonight on August 13th, a nice grouping of Venus, Mars, Saturn and the three day old Moon occurs after sunset. [Read more...]