Astronomy News for the Month of November 2006


  This news letter is provided as a service by
The International Association for Astronomical Studies
located in Denver, Colorado. The astronomical data presented here is
not only useful in Colorado but in other parts of the world as well.

Downloadable version of the newsletter in MSWord format.
(Right click and select "Save target as" to begin download.)

Visit the Home Page of KIØAR

You are visitor number AstroCounter to this page. Thank you!


Sign My Guest book Guest book by GuestWorld View My Guest book


Subscribe to the
IAAS Monthly Astronomy Newsletter

SUBSCRIBE

Read important subscription notes below.
Freelists.org
  Receive notification when this page changes.  

by ChangeDetect


An Open Invitation

For amateur radio and scanner enthusiasts, when in the Denver metro area, please join the Colorado Astronomy Net on the Rocky Mountain Radio League repeater on a frequency of 146.94 MHz on Tuesday nights at 7PM local time.


Special Notice to Denver, CO area residents and visitors to the area:

The Plains Conservation Center in Aurora hosts Full Moon Walks every month weather permitting. This month's walk is on the evening of November 5th. Visit http://www.plainsconservationcenter.org for more information and directions.


 Excerpts from JPL mission updates are provided as a public service as part
of the JPL Solar System Ambassador/NASA Outreach program.

For special JPL programs and presentations in your area visit the JPL Solar System Ambassador website.
(Click on the logo to link to the JPL SSA homepage.)


In this Newsletter...

Background screen credits:NGC5775 -Imaged March 21/22, 2001 using the 16" Kitt Peak Visitors Center telescope as part of the Advanced Observing Program.


7

The Moon

Phases

Apogee/Perigee

Moon/Planet Pairs

Return to Top


The Planets & Dwarf Planets

Planetary Reports generated by "TheSky" software. These reports provide predicted data for the planets for the first of each month for the current year. The rise and set times for the Sun and the Moon for each day of the month are also included in the reports.

(All times are local unless other wise noted.)
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.
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.
Venus - Is not visible this month. Venus will return to the evening sky by the end of the year.
Earth - N/A.
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.
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.
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.
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.
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

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.
Ceres - Is in the constellation of Capricornus shining at magnitude 8.9.

Return to Top


Astronomical Events

Meteor Showers

  • The Leonids - The duration of this meteor shower covers the period of Nov. 14-20. Maximum occurs on Nov. 17. The maximum hourly rate typically reaches 10-15, but most notable are periods of enhanced activity that occur every 33 years - events that are directly associated with the periodic return of comet Tempel-Tuttle. During these exceptional returns, the Leonids have produced rates of up to several thousand meteors per hour. The Leonids are swift meteors, which are best known for leaving a high percentage of persistent trains.

    "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.

  • 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.


    Eclipses

  • No eclipse activity this month.
  • Ocultations

    IOTA Logo

    More information on occultations can be found by clicking the IOTA logo.

    Asteroids

    (From west to east)

    Return to Top


    Planetary/Lunar Exploration Missions

    (Excerpts from recent JPL mission updates)
    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."

    Cassini Imaging Team

    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.

    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.

    Past, Present, Future and Proposed JPL Missions - http://www.jpl.nasa.gov/missions

    Visit JPL's mission pages for current status.

    Return to Top


       Mars Missions

    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:

    • Light-toned Rock Outcrop in Aureum Chaos (Released 30 October 2006)
      Image Caption:
      This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows an outcrop of light-toned, layered, sedimentary rock in Aureum Chaos. The darker material, which includes ripples, is composed of windblown sand and granules. This scene is located near 3.8S, 26.2W, and covers an area roughly 7.7 km by 3 km (4.8 by 1.9 mi) wide. Sunlight illuminates the terrain from the top/upper right. This southern autumn image was acquired on 14 July 2006.
    • All of the Mars Global Surveyor images are archived here.

    Every six months, a new suite of MGS MOC data are archived with the NASA Planetary Data System (PDS).

    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.

    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
    Thermal Emission Imaging System (THEMIS) website: http://themis.asu.edu/

    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.

    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."

    Landing sites

    Visit the Mars Exploration Rover page.

    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.

    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.

    Return to Top


    Links and Other Space News

    (If you have a link you would like to recommend to our readers, please feel free to submit it.)

    Return to Top


    Astronomical Lexicon

    Definitions of astronomical terms. Many of the astronomical terms used in this newsletter are defined here.

    Return to Top


    UT Logo

    Read the Universe Today Newsletter by clicking on the logo.

    Return to Top


    Acknowledgments and References

    Much of the information in this newsletter is from Astronomy® Magazine (Kalmbach Publishing), JPL mission status reports, the Internet, "Meteor Showers - A descriptive Catalog" by Gary W. Kronk, Sky & Telescope web pages (S&T), and other astronomical sources that I have stashed on my bookshelves.

    The author will accept any suggestions, constructive criticisms, and corrections. Please feel free to send me any new links or articles to share as well. I will try to accommodate any reasonable requests. Please feel free to send questions, comments, criticisms, or donations to the email address listed below. Enjoy! Return to Top


    Subscription Information

    Return to Top


    ScienceandNature BarnesandNoble.com HomePage

    Return to Top


    Keep looking UP!
    73 from KIØAR

    Return to Top






    FastCounter by LinkExchange
    Home of KIØAR
    created by Burness F. Ansell, III,
    Email me
    IAAS - COO, Director of Aerospace Technologies
    JPL Solar System Ambassador, Colorado
    last modified: November 02, 2006

    URL:http://bfa3.home.att.net/astro.html