Re: [Utah-astronomy] Jupiter and No Visible Galilean Moons Coming in September
Sorry, forgot to add the Sky&Telescope has a nice Jupiter Almanac as a PDF called Phenomena of Jupiter’s Moons that shows the event in their September 2009. Add six hours to the times listed as they are universal times. That link is found here: http://www.skyandtelescope.com/observing/objects/planets/38135094.html Another site I found interesting is http://homepage.ntlworld.com/mjpowell/Astro/Naked-Eye-Planets/Jupiter-Path.h... It has some interesting information regarding Jupiter and objects to view with it. One is the position of Neptune with Jupiter this year located here http://homepage.ntlworld.com/mjpowell/Astro/Naked-Eye-Planets/Neptune-Path-2... I'm sure most know that Jupiter and Neptune are undergoing a triple conjunction this year, first time since 1971. "The first of the 2009 conjunctions took place on May 25th 2009, when Jupiter (at magnitude -2.4) was moving direct (or prograde, i.e. West to East) against the star background and Neptune (at magnitude +7.9) was approaching its Eastern stationary point. The two planets were separated vertically by 25' (25 arcminutes, or just under half a degree) at this point, and were visible in the morning sky before sunrise. The second conjunction takes place on July 13th 2009, when both Jupiter (mag. -2.7) and Neptune (mag. +7.8) are retrograding (moving East to West) against the star background; the planets are separated by 36' (0°.6) at this point, and are visible from the late evening onwards. Jupiter then reaches opposition to the Sun on August 14th (having brightened to mag. -2.8), followed only three days later by Neptune (at mag. +7.8). Finally, the planets are again in conjunction on December 20th 2009, when both Jupiter (-2.2) and Neptune (+7.9) have resumed direct motion, the pair then being separated by 33' (0°.55); this conjunction is visible in the evening sky, shortly after sunset." So Monday is a time when you may want to take a look at Jupiter and Neptune with the second of three conjunctions and then again on December 20th, 2009 per the site. Also, next year 2010 to 2011 Uranus and Jupiter will also share a triple conjunction. That can be found here http://homepage.ntlworld.com/mjpowell/Astro/Naked-Eye-Planets/Uranus-Path-20... about 1/2 down under the title The Jupiter_Uranus Triple Conjunction. Something to put down for next year (and this site gives a finder chart for finding the two planets next year). Good time to view Neptune and Uranus rather easily over the next year or so. Jay
participants (1)
-
Jay Eads