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Topic: Transit of Mercury

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	NASA - 2006 Transit of Mercury
		The position angle is the direction of Mercury with respect to the center of the Sun's disk as measured counterclockwise from the celestial north point on the Sun.
		Transit timings and geographic coordinates of the observing site (measured from a topographic map or GPS) should be sent to Dr. John Westfall (johnwestfall@comcast.net), A.L.P.O. Mercury/Venus Transit Section, P.O. Box 2447, Antioch, CA 94531-2447.
		To determine whether a transit is visible from a specific geographic location, it is simply a matter of calculating the Sun's altitude and azimuth during each phase of the transit.
	sunearth.gsfc.nasa.gov /eclipse/OH/transit06.html (1733 words)

	Transit of Mercury - Wikipedia, the free encyclopedia
		Transits of Mercury with respect to Earth are much more frequent than transits of Venus, with about 13 or 14 per century, in part because Mercury is closer to the Sun and orbits it faster.
		During a May transit, Mercury is near aphelion and has an angular diameter of 12"; during a November transit, it is near perihelion and has an angular diameter of 10".
		The transit of November 15, 1999 was such a transit, and the previous one before that was on October 28, 743.
	en.wikipedia.org /wiki/Transit_of_Mercury (591 words)

	Mercury Transit
		Mercury (arrowed) is seen here as it crosses the edge of the sun to begin a solar transit.
		At the time of the transit, Mercury was only 9.9 arc seconds across, dwarfed by the Sun, which had an apparent size of 1940.47 arc seconds, some 196 times larger.
		Today, transits are used to measure the exact diameter of the Sun, which may vary with the solar cycle and affect weather on Earth.
	www.astropix.com /HTML/G_SUN/TRANSIT.HTM (521 words)

	Mercury Transit
		During the transit, the silhouette of Mercury was visible by day as the innermost planet passed directly between the earth and the sun.
		Transit of Mercury details from Fred Espenak include a table giving the times of major events during the 2006 transit; a map showing the global visibility; and the Index to Local Circumstances, showing when the transit is seen from locations around the world.
		Doppelmayer illustrates the path of Mercury across the face of the sun for the November 6, 1720, transit of Mercury.
	www.transitofvenus.org /mercury.htm (1384 words)

	Transit of Mercury: May 7th, 2003
		Transits of Mercury aren't all that rare--eight previous transits have taken place while I've trod the Earth--but on average half are visible only from the other hemisphere from where one happens to be at the time.
		At aphelion, Mercury is substantially closer to the Earth and its disc crossing the Sun during a transit is 12 arc seconds in diameter, as opposed to 10 arc seconds at November transits.
		A transit of Venus is, in fact, as easily visible to the unaided eye (adequately protected for viewing the Sun, of course) as the rare naked eye sunspot.
	www.fourmilab.ch /images/mercury_transit_2003 (3164 words)

	Transit of Mercury 2003 (Site not responding. Last check: 2007-10-15)
		Transits of Mercury occur when the planet Mercury, the closest planet to the Sun, lies directly between the Earth and the Sun.
		Mercury, a cratered world with a diameter of 3,025 miles, will be only about 1/158th the apparent diameter of the Sun and will appear similar in size to a small sunspot.
		Mercury, which makes one revolution about the Sun every 88 days, is currently situated low in the northwest during evening twilight.
	star.arm.ac.uk /press/Transit_Mercury0503_pr.html (346 words)

	NASA - Planetary Transits Page
		The transit or passage of a planet across the disk of the Sun may be thought of as a special kind of eclipse.
		To determine whether a transit of Mercury is visible from a specific geographic location, it is simply a matter of calculating the Sun's altitude and azimuth during each phase of the transit using information tabulated in the Seven Century Catalog of Mercury Transit.
		To determine whether a transit of Venus is visible from a specific geographic location, it is simply a matter of calculating the Sun's altitude and azimuth during each phase of the transit using information tabulated in the Six Millennium Catalog of Venus Transits.
	sunearth.gsfc.nasa.gov /eclipse/transit/transit.html (1349 words)

	Transit of Mercury : November 15, 1999
		Transit of Venus is easier to view without any telescope but proper filter is still required.
		Transits of Mercury occur in pairs about three years apart and always in the months of May and November.
		Circumstances during a transit can be divided into four contacts; first and second contacts (contact I and II) occur when the planet's disk is at external and internal tangency to the solar disk at ingress.
	touro.ligo-la.caltech.edu /~jkern/Transit (475 words)

	2003 Transit of Mercury
		Mercury apppears in the daytime sky every day round the year, but because of its close distance to the sun, it is usually washed out in the solar glow, it is one of the most difficult planets to observe.
		Mercury is closest to the line of sight from Earth to the Sun, but behind the Sun) to greatest elongation, to the inferior conjunction with the Sun.
		The surface of Mercury has been shaped by three processes: impact cratering where large objects struck the surface resulting in crater formation, volcanism where lava flooded the surface, and tectonic activity where the planet's crust moved in order to adjust to the planetary cooling and contracting.
	www.vigyanprasar.gov.in /mercurytransit.htm (4114 words)

	Mercury Transit: November 8, 2006
		Mercury will make a rare crossing of the Sun on November 8, 2006, a spectacle that will be visible to all of the United States.
		The entire transit of Mercury across the face of the Sun takes almost five hours, which means that those in the eastern half of the United States will have the end of the transit cut short by sunset.
		Mercury will enter the Sun's disk near the middle of the lower half of the Sun on the left, crossing to the right and moving slightly upward until it exits the disk.
	astronomyspace.suite101.com /article.cfm/mercury_transit (534 words)

	Mercury Transit (Site not responding. Last check: 2007-10-15)
		The last transit of Mercury we had was May 7th 2003 Mercury transits change the way we think first, then manifest that into physical changes in our lives over the course of a year to two years.
		The last mercury transit we had prior to May, was in November of 1999 right before the the fifth world energies started to be available the following Solstice.
		Transits of mercury only happen 14 times in every 100 years, the next one is November 8, 2006 then May 9, 2016
	www.spiritnexus.com /library/astro/mercury_transit.htm (97 words)

	2003 Transit of Mercury
		During the 2003 transit, Mercury's minimum separation from the Sun is 708 arc-seconds.
		Transit timings and geographic coordinates of the observing site (measured from a topographic map or GPS receiver) should be sent to: A. Mercury/Venus Transit Section, P.O. Box 16131, San Francisco, CA 94116, USA.
		The next transit of Mercury occurs on 2006 November 8-9 and is visible from the Americas, eastern Asia, Australia and New Zealand.
	sunearth.gsfc.nasa.gov /eclipse/OH/transit03.html (1600 words)

	The Nov.08/09, 2006 Transit of Mercury
		Thus we are fortunate that the 2006 transit is timed so that observers anywhere in the Americas will be able to see at least part of the event, and those on the Pacific coast will be able to watch all of it.
		TRANSIT PARAMETERS Below are some descriptive statistics for the transit, where all times are in UT (Universal Time) and PA stands for position angle, measured in degrees counterclockwise from celestial north.
		Mercury can be spotted on the Sun with low-power safely filtered binoculars, but you will probably need a telescope magnifying at least 50 times, and 60 mm in aperture or larger, to see the details of ingress and egress and time the four transit contacts.
	www.lpl.arizona.edu /~rhill/alpo/transitstuff/transit061109.html (1507 words)

	Transit of Mercury from Jupiter - Wikipedia, the free encyclopedia
		A transit of Mercury across the Sun as seen from Jupiter takes place when the planet Mercury passes directly between the Sun and Jupiter, obscuring a small part of the Sun's disc for an observer on Jupiter.
		During a transit, Mercury can be seen from Jupiter as a small fl disc moving across the face of the Sun.
		The inclination of Mercury's orbit with respect to Jupiter's ecliptic is 6.29°, which is less than its value of 7.00° with respect to Earth's ecliptic.
	en.wikipedia.org /wiki/Transit_of_Mercury_from_Jupiter (380 words)

	BBC NEWS \| Science/Nature \| The world watches Mercury
		Tiny Mercury races around the Sun every 88 days but because its orbit and the Earth's are tilted, transits occur infrequently.
		Mercury was 91 million kilometres (57 million miles) away, the Sun 150 million km (93 million miles) - scales that dwarf human imagination yet are utterly insignificant in cosmic terms.
		It was realised very early on that observations of transits could help establish a fixed distance scale for the Solar System from which the true measurements to the other planets could be gauged, calibrating the scale of space if you like.
	news.bbc.co.uk /2/hi/science/nature/3006051.stm (490 words)

	Transit of Mercury, May 7. 2003
		Mercury is a small planet and so far away that it is tiny compared to the h uge solar disc.
		Mercury will enter the solar disc at 07:12:56 in Norwegian summertime (CET +1 hour), be in the middle of the transit at 09:52:23, and leave the disc at 12:31:46 (the times will vary with only a few minutes at different places on the Earth).
		Mercury will then be in the middle of the transit at 16:00 which starts at 12:15 and lasts until 19:45.
	www.astronomy.no /mercury070503/about.html (934 words)

	Transit of Mercury 2003 (Site not responding. Last check: 2007-10-15)
		Transits of Mercury occur when the planet Mercury, the closest planet to the Sun, lies directly between the Earth and the Sun.
		Mercury, a cratered world with a diameter of 3,025 miles, will be only about 1/158th the apparent diameter of the Sun and will appear similar in size to a small sunspot.
		Mercury, which makes one revolution about the Sun every 88 days, is currently situated low in the northwest during evening twilight.
	www.arm.ac.uk /press/Transit_Mercury0503_pr.html (346 words)

	Transit of Mercury on November 8, 2006 : skywatching : Radioshows : Earth & Sky (Site not responding. Last check: 2007-10-15)
		The transit of Mercury is visible in its entirety from the west coast of North America, and from Hawaii—and after sunrise Thursday from New Zealand and Australia.
		Transit of Mercury on November 8, 2006 from Fred Espenak
		For a transit to occur, Mercury must be appreciably close to one of its nodes at inferior conjunction (when Mercury orbits between the Earth and sun).
	www.earthsky.org /radioshows/mercury-transit-tonight (780 words)

	Jay H. Beder: Transit of Mercury (Site not responding. Last check: 2007-10-15)
		A transit of Mercury (or Venus) is the passage of the planet across the disk of the sun.
		You may be able to see the transit by projecting the image of the sun on a surface, but the planet will be a very small dot, and if the sun's image is small, it may be very hard to see Mercury.
		Kepler was the first (1631) to predict a transit of Mercury (as well as of Venus).
	www.uwm.edu /~beder/mercury.html (358 words)

	BBC NEWS \| Science/Nature \| Mercury passes across Sun
		Mercury began the journey across the star's disc at just after 0510 GMT, depending on the viewing location on Earth.
		The planets Mercury and Venus are the only ones that appear to cross the face of the Sun, as seen from Earth, since both are closer to the star than the Earth is.
		In the case of Mercury, transits occur either close to 7 May at intervals of 13 and 46 years or close to 9 November, which occur more frequently at intervals of 7, 13 and 46 years.
	news.bbc.co.uk /1/hi/sci/tech/2994347.stm (432 words)

	SPACE.com -- Viewer's Guide: Watch Mercury Cross the Sun
		Transits of Venus happen less than twice a century (the next one is scheduled for June 6, 2012).
		Mercury's transit will begin within a minute of 19:12 GMT (Greenwich Mean Time) at every site from which it is visible.
		As Mercury moves across the face of the Sun, it will appear absolutely jet fl in contrast to the lighter gray of any sunspots that may also be present on the solar disk.
	www.space.com /spacewatch/061103_night_sky.html (1311 words)

	2006 Transit of Mercury
		Mercury's diameter is about 4800 km, while the Moon's is slightly less at about 3500 km (compared with about 12,700 km for the Earth).
		Mercury is the closest planet to the Sun, orbiting at about 1/3 the radius of the Earth's orbit.
		During the transit, Mercury's tiny disk--jet fl and perfectly round--will glide slowly across the face of the Sun.
	www.happynews.com /news/1162006/transit-mercury-planet.htm (639 words)

	KryssTal : Transit of Mercury
		A transit occurs when an Inferior Planet passes directly between the Earth and the Sun appearing as a fl spot against the Sun.
		Because of the eccentricity of Mercury's orbit, 9 transits happen in November and only 4 in May. The transit is not visible to the naked eye and must be viewed by projection.
		There have been three previous transits of Mercury visible in the UK since I was young.
	www.krysstal.com /transit2003.html (530 words)

	NSO/GONG: Mercury Transit of 7 May 2003 (Site not responding. Last check: 2007-10-15)
		On May 7, 2003 the planet Mercury transited across the face of the Sun.
		This transit was seen by the 3 GONG telescopes (in Learmonth, Australia; Udaipur, India; and El Teide, the Canary Islands, Spain) that were facing towards the sun during the hours of the transit.
		We're also in the preliminary stages for the Venus transit in June, 2004; this transit of Mercury was an excellent preparation and learning experience for Venus.
	gong.nso.edu /mercury_transit03 (174 words)

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