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New Comet 2007 E2(Lovejoy)-Destination unknown ?
spaceweather.com ^ | 3-17-07 | spaceweather

Posted on 03/17/2007 6:28:40 AM PDT by Orlando

New Comet(Lovejoy): On March 15th, Terry Lovejoy of Thomlands, Australia discovered a new comet (C/2007 E2) in the southern constellation Indus. Remarkably, to make the find he used not a telescope but just a camera- a Canon 350D. At Lovejoy's request John Frummund of Gisborme, New Zealand confirmed the comet with this photo taken through a 0.41-m reflector.

The new comet is green, 9th-magnitude, and located approximately at right ascension 20h 42m 55s, declination -50o 43' 14" (ref: International Astronomical union Circular 8819). A detailed ephemeris is not yet available, so it is impossible to say how bright Comet Lovejoy will become-or even which way it will go. Stay tuned for updates.

(Excerpt) Read more at spaceweather.com ...


TOPICS: Extended News; Miscellaneous
KEYWORDS: 2007e2; comet; comet2007e2; cometlovejoy; greencomet; neo; science; spacenews
No tail is visable. Here's more inforamtion and close-up image.

http://www.possumobservatory.co.nz/comet2007e2-lovejoy.htm

1 posted on 03/17/2007 6:28:44 AM PDT by Orlando
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To: Orlando

http://www.possumobservatory.co.nz/comet2007e2-lovejoy.htm


2 posted on 03/17/2007 6:30:05 AM PDT by Orlando
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To: Orlando

Very cool..


3 posted on 03/17/2007 6:32:38 AM PDT by xcamel (Press to Test, Release to Detonate)
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To: Orlando

A question for those who know. I sometimes read articles on space referencing "north" and "south". Does astronomy use the axis of the Earth as a reference?


4 posted on 03/17/2007 6:40:12 AM PDT by SampleMan (Islamic tolerance is practiced by killing you last.)
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To: SampleMan
A question for those who know. I sometimes read articles on space referencing "north" and "south". Does astronomy use the axis of the Earth as a reference?

Yes. The locations in the sky are given by declination which measures distance north or south of the equator (analogous to latitude) and right ascension which measures distance around the sky along the earth's equator (analogous to longitude). Because the earth's axis is precessing over time you also need a year to define the coordinates.

5 posted on 03/17/2007 6:47:33 AM PDT by KarlInOhio (Parker v. DC: the best court decision of the year.)
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To: Orlando

Good thing it wasn't discovered by Terry Hammer. /obscure


6 posted on 03/17/2007 6:52:00 AM PDT by NonValueAdded (Prevent Glo-Ball Warming ... turn out the sun when not in use)
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To: KarlInOhio

Thanks, I always wondered if they used the axis (which would be easiest, or the orbital plane.


7 posted on 03/17/2007 6:56:57 AM PDT by SampleMan (Islamic tolerance is practiced by killing you last.)
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To: Orlando

Hot Fudge Sunday *ping*


8 posted on 03/17/2007 7:13:44 AM PDT by Bean Counter (Stout Hearts...)
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To: SampleMan
which would be easiest, or the orbital plane.

Planetary, cometary, and asteriod positions are usually calculated in perifocal coordinates, a coordinate system with the XY-plane coincident with the orbital plane of the object, positive z is the direction of the orbital angular momentum vector. ("r-cross-v")

Perifocal cooridinates are translated to heliocentric, with the XY plane the "average" plane of the Earth's orbit, z in the direction of the Earth's angular momentum vector. In heliocentric coordinates, the X axis is the intersection of the XY-axis (also called the "ecliptic plane") and Earth's equatorial plane. Positive X is in the direction where the Sun appears to be at the Vernal Equinox.

(I've glossed over some complications for the sake of clarity)

For the purpose of observing from Earth, heliocentric coordinates are translated to declination (latitude) right ascension (longitude) and geocentric range. Knowing one's geodetic latitude, longitude and altitude, you can translate to local azimuth and elevation. (The steps are slightly different for Earth satellites, including the moon.)

9 posted on 03/17/2007 8:11:33 AM PDT by Lonesome in Massachussets (When I search out the massed wheeling circles of the stars, my feet no longer touch the earth)
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To: SampleMan
which would be easiest, or the orbital plane.

Planetary, cometary, and asteriod positions are usually calculated in perifocal coordinates, a coordinate system with the XY-plane coincident with the orbital plane of the object, positive z is the direction of the orbital angular momentum vector. ("r-cross-v")

Perifocal cooridinates are translated to heliocentric, with the XY plane the "average" plane of the Earth's orbit, z in the direction of the Earth's angular momentum vector. In heliocentric coordinates, the X axis is the intersection of the XY-axis (also called the "ecliptic plane") and Earth's equatorial plane. Positive X is in the direction where the Sun appears to be at the Vernal Equinox.

(I've glossed over some complications for the sake of clarity)

For the purpose of observing from Earth, heliocentric coordinates are translated to declination (latitude) right ascension (longitude) and geocentric range. Knowing one's geodetic latitude, longitude and altitude, you can translate to local azimuth and elevation. (The steps are slightly different for Earth satellites, including the moon.)

10 posted on 03/17/2007 8:11:35 AM PDT by Lonesome in Massachussets (When I search out the massed wheeling circles of the stars, my feet no longer touch the earth)
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To: Orlando

And Moses said, "Nothing to be worried about..."
11 posted on 03/17/2007 8:12:24 AM PDT by JRios1968 (Tagline wanted...inquire within)
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To: JRios1968
Comet McNaught the great comet of 2007 is still vi sable to the south too. The last report I read(26 Feb 07) puts it at a +5.5 Magnitude in the Tucana constellation. It's moving away and it's color is Green.
Comet 2P/Encke is coming in from the North, and should pass between Mercury & Venus(mostly toward Mercury) in April.
This new comet (2007/E2) is coming in from the South(constellation Indus), but we have no ETA, or other data of trajectory & size yet. It's also Green in color.
What makes a comet Green ?
I read in spaceweather on Feb 26th, 2007 that coma contains cyanogen(CN) a poisonous gas, and diatomic carbon (C2),etc...
We have Comet 2P/Encke projected path map out coming in from the North.
It will be interesting to see Comet 2007/E2 path of travel, and when ?
12 posted on 03/17/2007 8:47:08 AM PDT by Orlando
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To: Orlando

When McNaught passed it might of left alot of debris as it passed.

http://www.freerepublic.com/focus/news/1769403/posts

2007 EH,(March 11)Miss Distance 0.5 LD and 2007 EK(March 13) 0.7LD. That's close.


13 posted on 03/17/2007 8:53:46 AM PDT by Orlando
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To: Orlando
The new comet is green, 9th-magnitude, and located approximately at right ascension 20h 42m 55s, declination -50d 43' 14"

Just in time for St. Patty's Day!

14 posted on 03/17/2007 8:53:53 AM PDT by mikrofon (Top of the Mornin' to ye)
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To: mikrofon
lol..what timing
15 posted on 03/17/2007 9:11:50 AM PDT by Orlando
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To: Orlando; All

These Astronomers are good people.
Think about it for a moment to find a new comet with a camera only is amazing, Here's their website:
I know they will provide more updates and images in the days,weeks to come.

http://www.iceinspace.com.au/forum/showthread.php?t=18346

we shall see what happens next ?


16 posted on 03/17/2007 9:16:27 AM PDT by Orlando
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To: All

NASA/JPL projected path of New Comet C/2007 E2, just came out...This is close...Right in front of Earth orbital plane

http://neo.jpl.nasa.gov/cgi-bin/db_shm?sstr=C%2F2007+E2&group=all&search=Search

waiting for more images ,size,etc...


17 posted on 03/19/2007 11:42:47 AM PDT by Orlando
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To: Orlando

OK 17 posts and I don't see the, We're dead guys" yet.


18 posted on 03/19/2007 11:44:55 AM PDT by bmwcyle (Freep Fox they drop the ball on GOE)
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To: Orlando

Somebody notify Bruce Willis.


19 posted on 03/19/2007 11:45:39 AM PDT by dfwgator (The University of Florida - Championship U)
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To: bmwcyle

debris left behind is common with comets


20 posted on 03/19/2007 12:06:36 PM PDT by Orlando
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To: dfwgator

looks like it will be close around April,15 does this mean we may be off the hook :)


21 posted on 03/19/2007 5:51:48 PM PDT by Polynikes
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To: NonValueAdded

that depends when it "Falls" /obscure


22 posted on 03/19/2007 5:54:03 PM PDT by Polynikes
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To: Orlando

no tail visible does that mean it coming straight at us ?


23 posted on 03/19/2007 5:54:49 PM PDT by al baby (Hi mom)
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To: Orlando

just like the clintons


24 posted on 03/19/2007 5:56:11 PM PDT by al baby (Hi mom)
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To: Polynikes

Well, at least we won't live to see Hillary as President!


25 posted on 03/19/2007 5:56:38 PM PDT by whitedog57
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To: Polynikes

Well, at least we won't live to see Hillary as President!


26 posted on 03/19/2007 5:56:44 PM PDT by whitedog57
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To: Orlando

Close, it looks like it's heading straight for us !


27 posted on 03/19/2007 6:00:13 PM PDT by cmsgop ( Axis of Evil = Iran , North Korea , Rob and Amber)
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To: al baby

yes


28 posted on 03/19/2007 9:33:26 PM PDT by Orlando
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To: al baby
no tail visible does that mean it coming straight at us?

The tail goes away from the sun, not in the direction from which the comet is coming.

29 posted on 03/19/2007 9:36:29 PM PDT by Interesting Times (ABCNNBCBS -- yesterday's news.)
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To: NonValueAdded
Good thing it wasn't discovered by Terry Hammer. /obscure

Or, it's Ice Cream Sundae, on a Tuesdae? /more obscure

the infowarrior

30 posted on 03/19/2007 10:12:21 PM PDT by infowarrior
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To: Orlando
Destination unknown ?

Huh?

By definition, comets orbit the Sun!

31 posted on 03/20/2007 5:26:02 AM PDT by Elsie
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To: Lonesome in Massachussets
(I've glossed over some complications for the sake of clarity)

Gee...

Thanks!

;^)

32 posted on 03/20/2007 5:27:50 AM PDT by Elsie
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