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IAAS Monthly Astronomy Newsletter SUBSCRIBE Read important subscription notes below. Freelists.org |
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Background screen credits:NGC5775 -Imaged March 21/22, 2001 using the 16" Kitt Peak Visitors Center telescope as part of the Advanced Observing Program.
| Planetary Highlights for November - Mercury performs a rare transit of the Sun this month. On November 8, at 2:12 pm EST (12:12 pm MST) Mercury will pass in front of the Sun for 5 long hours. Mercury will appear as a tiny black dot against the Sun's disk. Saturn still provides excellent views through a small telescope this month located in the constellation of Leo. Observers should be able to make out Cassini's division between the A and B rings on a good night. | |
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Mercury - Is in inferior conjunction at 5 pm EST on the 8th as it transits the Sun. Mercury is at greatest western elongation (20° above the eastern horizon) on the 20th. Mercury sets about 5:28 pm on the 1st. After the 8th, Mercury returns to the morning skies. Mercury will be rising about 5:25 am by month's end. Mercury shines at magnitude -0.7. |
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Venus - Is not visible this month. Venus will return to the evening sky by the end of the year. |
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Earth - N/A. |
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Mars - Is not visible this month. Mars is also on the far side of the Sun as is Venus. Mars will return to the morning sky in early December. |
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Jupiter - Is in conjunction with the Sun on the 21st and is not visible this month. Jupiter will return to the morning sky in early December. |
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Saturn - Rises around 12:12 am on the 1st and about 10:15 pm by month's end. Saturn is in the constellation of Leo and shines at a magnitude of 0.5. |
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Uranus - Is still in an excellent position for evening viewing. Uranus sets about 1:44 am on the 1st and about 11:42 pm by month's end. Uranus is in the constellation of Aquarius and shines at magnitude 5.8. |
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Neptune - Sets about 11:40 pm on the 1st and about 9:44 pm by month's end. Neptune is in the constellation of Capricornus this month. Neptune shines at a magnitude of 7.9. |
Dwarf Planets |
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Pluto - Sets about 8:00 pm on the 1st and about 6:05 pm by month's end. Pluto is in the constellation of Ophiuchus. Pluto shines at magnitude 14.0. As always, good luck at spotting this one. |
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Ceres - Is in the constellation of Capricornus shining at magnitude 8.9. |
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Meteor Showers
"This year, Earth passes through a debris trail left by the comet's 1932 passage, and a brief, sharp increase in meteor counts should occur. Astronomers expect meteor rates to reach about 100 per hour around 4h45m UT November 19 (11:45 pm EST on the 18th). This timing favors observers in Europe and Africa." (Astronomy Magazine, Nov. 2006, p. 56) For more information about Comets and Meteor Showers, visit Gary Kronk's Comets & Meteor Showers webpage. |
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Comets
Comet 4P/Faye is in the constellation of Aries shining at 9th magnitude will be difficult to spot from within a city. 4P/Faye is expected to brighten to about 8th magnitude in the next couple of months. A small telescope should be able to resolve this fuzzy ball. 4P/Faye is now rising very soon after Sun set this month. The best time to observe Faye will be in the latter part of the month before the Moon rises. For information, orbital elements and ephemerides on observable comets, visit the Observable Comets page from the Harvard-Smithsonian Center for Astrophysics. For more information about Comets and Meteor Showers, visit Gary Kronk's Comets & Meteor Showers webpage. |
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Eclipses
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Ocultations
More information on occultations can be found by clicking the IOTA logo. |
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Asteroids
(From west to east)
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Cassini - October 11, 2006 - NASA Finds Saturn's Moons May Be Creating New Rings
"Cassini scientists are on the trail of the missing moons of Saturn. A recent observation by the spacecraft leads them to believe that they will find the moons near newly discovered rings around the planet. During an unprecedented opportunity, with the sun poised behind Saturn, Cassini scientists discovered two new rings and confirmed the presence of two others. The new rings are associated with one or more small moons and share their orbits with the moons, while scientists suspect a moon is lurking near a third ring." For the latest mission status reports, visit Cassini Mission Status webpage. The speed and location of the spacecraft along its flight path can be viewed on the "Where is Cassini Now?" webpage. |
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New Horizons - No new news since September 26, 2006 - Jupiter Ahoy!
"Blazing along its path to Pluto, New Horizons has come within hailing distance of Jupiter. The first picture of the giant planet from the spacecraft's Long Range Reconnaissance Imager (LORRI) is a tantalizing promise of what's to come when New Horizons flies through the Jupiter system early next year." For more information on the New Horizons mission - the first mission to the ninth planet - visit the New Horizons homepage: http://pluto.jhuapl.edu/ for more information about the mission. |
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Past, Present, Future and Proposed JPL Missions - http://www.jpl.nasa.gov/missions Visit JPL's mission pages for current status. |
Mars Missions
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Mars Global Surveyor - No new news since August 11, 2006 - Mars Global Surveyor Celebrates Discovery of Deimos
"Deimos was discovered 129 years ago on August 11, 1877. To celebrate, the MGS team presents the first and only Mars Orbiter Camera (MOC) image of this tiny moon." Image of the Wek - October 30, 2006 "The following new image taken by the Mars Orbiter Camera (MOC) on the Mars Global Surveyor spacecraft are now available:
Information about how to submit requests is online at the new Mars Orbiter Camera Target Request Site, at http://www.msss.com/plan/intro" Newly-released MOC images can be seen in the MOC Gallery, a website maintained by Malin Space Science Systems, the company that built and operates MOC for the Jet Propulsion Laboratory and NASA. Mars Global Surveyor was launched in November 1996 and has been in Mars orbit since September 1997. It began its primary mapping mission on March 8, 1999. Mars Global Surveyor is the first mission in a long-term program of Mars exploration known as the Mars Surveyor Program that is managed by JPL for NASA's Office of Space Science, Washington, DC. Malin Space Science Systems (MSSS) and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission. MSSS operates the camera from its facilities in San Diego, CA. The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, CA and Denver, CO. Visit the MGS pages at http://mars.jpl.nasa.gov/mgs/index.html. There are over 200,000 images of Mars from the MGS, check out the newest MGS images of the surface of Mars. |
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Mars Odyssey Orbiter - No new news since August 16, 2006 - NASA Findings Suggest Jets Bursting From Martian Ice Cap
"Every spring brings violent eruptions to the south polar ice cap of Mars, according to researchers interpreting new observations by NASA's Mars Odyssey orbiter. Jets of carbon dioxide gas erupting from the ice cap as it warms in the spring carry dark sand and dust high aloft. The dark material falls back to the surface, creating dark patches on the ice cap which have long puzzled scientists. Deducing the eruptions of carbon dioxide gas from under the warming ice cap solves the riddle of the spots. It also reveals that this part of Mars is much more dynamically active than had been expected for any part of the planet." "A simulated fly-through using the newly assembled imagery is available online at http://www.nasa.gov/mission_pages/mars/missions/odyssey/20060313.html. The fly-through plus tools for wandering across and zooming into the large image are at http://themis.asu.edu."
Mars Odyssey THEMIS Images October 23-27, 2006 The following new images from the Mars Odyssey spacecraft are now available:
The Odyssey data are available through a new online access system established by the Planetary Data System at: http://starbrite.jpl.nasa.gov/pds/" Visit the Mars Odyssey Mission page. |
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Mars Exploration Rover Mission (Spirit and Opportunity) - October 25, 2006 -
NASA Posts Panorama to Celebrate Rover's 1,000th Martian Day
October 20, 2006 - During Solar Conjunction, Mars Spacecraft Will Be on Autopilot "Every day for the past decade, the U.S. has had a presence at Mars, using spacecraft to understand this extreme world and its potential as a past or present habitat for life. During that time, all spacecraft have become virtually incommunicado for about two weeks every two years. The reason is solar conjunction, which occurs again from October 18-29, 2006. Solar conjunction is the period when Earth and Mars, in their eternal march around the Sun, are obscured from each other by the fiery orb of the Sun itself. Like dancers on either side of a huge bonfire, the two planets are temporarily invisible to each other." Spirit Status: Approaching Solar Conjunction - sol 982-987, October 16, 2006 "As Spirit enters a period known as solar conjunction, when the sun interferes with transmissions between Mars and Earth, mission planners sent a complete set of plans for science activities during solar conjunction to Spirit on the rover's 982nd sol, or Martian day, of exploring inside Gusev Crater (Oct. 7, 2006). During that time, the rover will achieve a new milestone: exploring Mars for 1,000 consecutive days. Solar conjunction will begin on sol 991 (Oct. 16, 2006) and end on sol 1015 (Nov. 10, 2006). During this period, both NASA rovers, Spirit and Opportunity, will not receive any new command loads, but they will send daily downlinks to Earth, averaging 15 megabits of data per transmission. The data will be relayed to Earth via NASA's Mars Odyssey spacecraft in orbit above Mars. Each day during conjunction, Spirit will spend 3 hours analyzing dust collected on the rover's filter magnet using the Moessbauer spectrometer and 24 minutes conducting a variety of early morning science observations. The morning science activities are designed to monitor the atmosphere and to search for any possible surface changes. The workload will make optimum use of solar power levels available with the retreat of Martian winter." Opportunity Status: On the Promontory - sol 954-960, October 16, 2006 "Opportunity is healthy and perched at the tip of the promontory "Cape Verde," 3.1 meters (10.2 feet) from the edge of a sharp drop off on the rim of "Victoria Crater." Soon after arriving at Victoria Crater's "Duck Bay" last week, Opportunity was sent on its way to Cape Verde. Six sols, four drives and 127.61 meters (419 feet) later, Opportunity arrived at the rock target "Fogo" near the tip of Cape Verde. Along the way, Opportunity made remote-sensing observations including a panorama from Duck Bay, imagery of Cape Verde and atmospheric science. On Sol 957 (Oct. 3, 2006) Opportunity performed a coordinated observation with NASA's Mars Reconnaissance Orbiter (MRO). MRO imagery included a picture of Opportunity itself! The image was taken with MRO's HiRISE (High Resolution Imaging Science Experiment) camera, the highest-resolution camera ever to orbit Mars." Visit the Mars Exploration Rover page. |
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Mars Reconnaissance Orbiter - No new news since September 29, 2006 - NASA's New Mars Camera Gives Dramatic View of Plane
"Mars is ready for its close-up. The highest-resolution camera ever to orbit Mars is returning low-altitude images to Earth from NASA's Mars Reconnaissance Orbiter. Rocks and surface features as small as armchairs are revealed in the first image from NASA's Mars Reconnaissance Orbiter since the spacecraft maneuvered into its final, low-altitude orbital path. The imaging of the red planet at this resolution heralds a new era in Mars exploration." More information about the mission is available online at http://www.nasa.gov/mro. |
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Mars Missions Status
New Mars missions are being planned to include several new rover and sample collection missions. Check out the Mars Missions web page and the Mars Exploration page. |

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