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Asteroid and Comet watch thread Neo 2008
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interest bump
User ID: 373033
2/13/2008 11:32 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
... busy skies! ...
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ZOSIME
User ID: 314632
2/13/2008 9:39 PM
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MPEC 2008-C80 - "15:51 UT" - 2008 CH116
K08CB6H 2008 CH116 (q=0.271 AU, H=19.1 ~513m) was discovered at 1215 UT on 9 Feb. by the MLS, which observed it at Feb. 9.51-52p4 and 13.47-49p4. The discovery was confirmed by Great Shefford Obs. (Feb. 10.20-23p3, 11.22-24p3 & 13.15-17p2), Spacewatch 1.8m (Feb. 12.51-52p3 & 13.47p3), and MRO (Feb. 13.48-49p4).
This one is bigger than Tu24 just found distance not to concerning but the closest so far of bigger ones. |
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ZOSIME
User ID: 314632
2/13/2008 9:40 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
2008 CK70 - intruder
Approximate diameter: 32 meters (H=25.156)
Closest Earth approach: 0.96 LD at 0018 UTC tomorrow
Inside Earth-Moon system: 2227 UTC today until 0208 UTC tomorrow
Inside Earth's Hill sphere: yesterday until 16 Feb.
Inside ten LD of Earth: 12 to 17 Feb.
Closest Moon approach: 1.93 LD at 0008 UTC tomorrow
Data based on: JPL SSD orbit solution #3 downloaded yesterday
based on 59 observations spanning 3 days
Optical observation: observed from 10 locations during 3.0087 days
discovered at 0811 UTC on 9 Feb. by LINEAR
last observed at 0823 UTC on 12 Feb. by the Mt. Lemmon Survey
Note: risk listed |
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screenwr007
User ID: 372940
2/14/2008 3:56 AM
 | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
2008 CK70 - intruder
Approximate diameter: 32 meters (H=25.156)
Closest Earth approach: 0.96 LD at 0018 UTC tomorrow
Inside Earth-Moon system: 2227 UTC today until 0208 UTC tomorrow
Inside Earth's Hill sphere: yesterday until 16 Feb.
Inside ten LD of Earth: 12 to 17 Feb.
Closest Moon approach: 1.93 LD at 0008 UTC tomorrow
Data based on: JPL SSD orbit solution #3 downloaded yesterday
based on 59 observations spanning 3 days
Optical observation: observed from 10 locations during 3.0087 days
discovered at 0811 UTC on 9 Feb. by LINEAR
last observed at 0823 UTC on 12 Feb. by the Mt. Lemmon Survey
Note: risk listed Quoting: ZOSIME
The thing that's really worrisome about these new-found bogeys is the fact that they aren't 'rocky'. Since TU24 and the alarming rate of NEO's 97.891% have been of a particularly strange iron/nickel composition. The composition is different then normal iron/nickel meteors, it's a lot more dense. this means that the size really doesn't come into affect when entering the Earth's atmosphere. I mean a pebble size meteor could hit if the composition is right. Obviously it's good that they are smaller in the event of an impact. The problem is though, that a small one can cause a Tunguska sized problem. They now believe the Tunguska meteor was about 20-25meters, possibly smaller! So it doesn't take much and god-forbid one was to hit in a populated area.
Zosime... Can you e-mail me screenwr@msn.com (I lost your e-mail). I want to send you over some cool things I have found out. When is the best time to catch you online?
Spread the word and show your support!
www.brklynz.blogspot.com
(Don't worry I'm not selling anything, so it's not spam) |
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ZOSIME
User ID: 314632
2/14/2008 12:19 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
First near-Earth triple asteroid discovered by Arecibo Observatory
astronomers – a mere 7 million miles from Earth
ITHACA, N.Y. – Once considered just your average single asteroid, 2001 SN263 has now been revealed as the first near-Earth triple asteroid ever found. The asteroid – with three bodies orbiting each other – was discovered this week by astronomers at the sensitive radar telescope at Cornell University’s Arecibo Observatory in Puerto Rico.
Cornell University and Arecibo astronomer Michael C. Nolan said he and his colleagues made the discovery when they obtained radar images Feb. 11. The group subsequently took more images to learn that the three objects – about 7 million miles from Earth – are rotating around each other
We talked about this with TU24 and if it had other bodies rotating around it here is the link to learn more about it
interesting
[link to www.naic.edu] |
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Anonymous Coward
User ID: 373604
2/14/2008 12:22 PM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
and now the Pentagon are going to go shooting missiles wildly into the sky, to shoot down a ''satellite''!!
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ZOSIME
User ID: 314632
2/19/2008 2:13 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
MPEC 2008-D14 - "16:09 UT" - 2008 DB
K08D00B 2008 DB (small asteroid, Earth MOID=1.0 LD, H=25.6 ~26m) was discovered at 0548 UT on 18 Feb. by the CSS, which observed it at Feb. 18.24-29p8, 18.36p4, 18.52-53p4, 19.32p2, and 19.41p3. The discovery was confirmed by Sabino Canyon Obs. (Feb. 18.42-43p3), Remanzacco Obs. (Feb. 18.86p2), Guidestar Obs. (Feb. 18.86-91p3), Great Shefford Obs. (Feb. 18.99-01p3), and Farra d'Isonzo Obs. (Feb. 19.02-04p3). This object was within ten lunar distances (LD) of Earth, reaching 4.6 LD on 14 Feb. |
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ZOSIME
User ID: 314632
2/19/2008 2:16 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
MPEC 2008-D14 - "16:09 UT" - 2008 DB
K08D00B 2008 DB (small asteroid, Earth MOID=1.0 LD, H=25.6 ~26m) was discovered at 0548 UT on 18 Feb. by the CSS, which observed it at Feb. 18.24-29p8, 18.36p4, 18.52-53p4, 19.32p2, and 19.41p3. The discovery was confirmed by Sabino Canyon Obs. (Feb. 18.42-43p3), Remanzacco Obs. (Feb. 18.86p2), Guidestar Obs. (Feb. 18.86-91p3), Great Shefford Obs. (Feb. 18.99-01p3), and Farra d'Isonzo Obs. (Feb. 19.02-04p3). This object was within ten lunar distances (LD) of Earth, reaching 4.6 LD on 14 Feb. Quoting: ZOSIME
this is departed |
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ZOSIME
User ID: 314632
2/19/2008 2:29 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
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Smerk
User ID: 377084
2/20/2008 3:47 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
Numerous satellites etc, have crashed over the years and they have NEVER before gone to this much trouble just to shoot down one little satellite. Pretty suspicious if you ask me... |
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interest bump
User ID: 377219
2/20/2008 9:54 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
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ZOSIME
User ID: 314632
2/22/2008 3:52 PM
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MPEC 2008-D26 - "19:34 UT" - 2008 DE
K08D00E 2008 DE (Earth MOID=1.9 LD, H=19.3 ~467m) was discovered at 0749 UT on 19 Feb. by the Catalina Sky Survey (CSS), which observed it at Feb. 12.31-32p4, 19.33-38p7, and 19.43-45p4. The discovery was confirmed by Astronomical Research Obs. (ARO) (Feb. 21.26-27p3). |
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ZOSIME
User ID: 384163
3/5/2008 2:09 AM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
MPEC 2008-E42 - "20:13 UT" - 2008 EE5
K08E05E 2008 EE5 (i=42.7°, Q=0.992 AU, Earth MOID=2.1 LD, H=19.2 ~490m) was discovered at 0407 UT on 4 March by the Mt. Lemmon Survey (MLS), which observed it at March 4.17-21p8. The discovery was confirmed by Great Shefford Obs. (March 4.80-82p3). |
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* <-----star of destiny
User ID: 279402
3/5/2008 2:12 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
These things are getting closer arent they ? |
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ZOSIME
User ID: 384163
3/5/2008 2:12 AM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
This one is also of interest Happy ST. Patty's day??
1620 Geographos Mar. 17 49 LD 13 3 km |
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JK1
User ID: 365558
3/5/2008 3:13 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
This one is also of interest Happy ST. Patty's day??
1620 Geographos Mar. 17 49 LD 13 3 km Quoting: ZOSIME
Too many words and no conclusion.
The very question is whether the asteroid is made of magnetic material, holds strong magnetic field and how rotates in space to interact with magnetic lines in the 'magnetotail' of the Earth, where the level of magnetic flux is very low.
The mechanism I revealed and documented is very simple. The magnetic line, when properly oriented to the axis of asteroid's rotation, is bound to asteroid's strong field /imagine multiplicative wire winding in magnetic coil/ and dragged by it to the outer space following the asteroid. When Solar wind is week - as these days is - magnetic reconnection can follow more than month or more after the close flyby.
Result : plasma streams with peak density of particles exceeding 40 pcc followed by Earth's plasma shield heating up to 100 000 000 K or more.
Earth' effects : speeding up earthquakes, volcano activities
severe weather changes, unusually strong auroras, high levels of K-index with great influence on man's psychics...?
Diameter of the Asteroid 2008CM74 with 2008/02/15 flyby 0.006 was only ~8m but the effect was significant and documented at time 05:51:33 UT.
In case of spontaneous reconnection /triggered by some unusually strong Sun's event or close Supernova effects /
the Day of Trifids could start to show us ...how fragile we are...
Maybe, it was pretty good prepared and planned long ago by the Intelligence we are not able to understand or believe in.
Filamentary, dear Watson. |
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Anonymous Coward
User ID: 294313
3/5/2008 3:40 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
Had a dream last night, was watching small streaks of light in the sky, and then small pebble sized meteors started coming down. I took shelter in a warehouse or some building and looked up. The meteors started coming down more quickly and were much bigger, the size of boulders, they started to crash through the roof, I kept avoiding them but eventually a huge rock hit me and I awoke. Now I saw these 'meteors' coming down from the sky in my dream, but they 'bounced' on hitting the earth which isn't likely.
Woke up with a beating heart though  |
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GraftedPromise in USofA
User ID: 386056
3/5/2008 10:39 AM | | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
St. Patrick's Day?
"Wearing of the green" could take on a whole new meaning! |
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ZOSIME
User ID: 384163
3/5/2008 9:08 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
This one is also of interest Happy ST. Patty's day??
1620 Geographos Mar. 17 49 LD 13 3 km Quoting: ZOSIME
Here is some information from 1994-96 when they performed imaging on this asteroid. might find interesting
Abstract
We report on recent radar-based modeling of two near-Earth asteroids. For 1620 Geographos, which was to have been a Clementine I target, radar imaging at Goldstone in August 1994 revealed a very elongated body with peculiar protuberances at its ends (Ostro et al., Icarus 121, 46--66, 1996). Unfortunately the imaging geometry placed the radar close to the asteroid's equatorial plane for the entire experiment, a situation that provides no leverage to resolve the ``north-south ambiguity'' in the delay-Doppler radar images. However, the extensive Geographos lightcurve data set (Magnusson et al., Icarus 123, 227--244, 1996) provides additional geometrical diversity. Using these two data sets, we have produced a comprehensive physical model of Geographos' shape, spin state, and photometric properties. We will present this model, explore its limitations, and discuss the process of integrating radar and optical data in a single physical model. For the Clementine II target 4179 Toutatis (Nature 387, 110, 1997) nine consecutive days of high-resolution delay-Doppler imaging at Goldstone during December 1996 extended the time base of available radar data from nineteen days to about four years (Ostro et al., BAAS in press). With small refinements to its non-principal-axis spin state, a physical model based on 1992 data (Hudson and Ostro, Science 270, 84--86, 1995) accounts for the orientation of the asteroid observed in the 1996 data. |
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ZOSIME
User ID: 384163
3/5/2008 9:09 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
Extreme elongation of asteroid 1620 Geographos from radar images
S. J. Ostro*, K. D. Rosema*, R. S. Hudson†, R. F. Jurgens*, J. D. Giorgini*, R. Winkler*, D. K. Yeomans*, D. Choate*, R. Rose*, M. A. Slade*, S. D. Howard* & D. L. Mitchell*
* Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA
† School of Electrical Engineering and Computer Science, Washington State University, Pullman, Washington 99164-2752, USA
MOST small asteroids are thought to result from catastrophic collisions1, and their shapes can provide insight into their origin and collisional evolution. Two main-belt asteroids have been successfully imaged by spacecraft2,3, but such images have yet to be obtained for asteroids that cross Earth's orbit. Earth-crossing asteroids are generally too small to be resolved by optical telescopes, and shape constraints derived from optical lightcurves are subject to large systematic biases4. Ground-based radar observations, on the other hand, have proved successful in resolving the shapes of some small asteroids5-9. We describe here radar measurements of the Earth-crossing asteroid 1620 Geographos during its recent close encounter with the Earth. We have determined the silhouette of Geographos along its rotation axis, and confirm earlier lightcurve-based conjectures10 that this object has a very unusual shape. The silhouette is irregular, non-convex and has an aspect ratio of 2.76 0.21, establishing it as the most elongated Solar System object yet imaged. The unusual nature of the shape is underscored by laboratory fragmentation experiments11,12, in which the average aspect ratio of fragments is 1.4, with fewer than 1% as elongated as Geographos. |
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ZOSIME
User ID: 384163
3/5/2008 9:12 PM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
The shapes of several Earth-crossing objects (ECOs) have now been inferred by delay-Doppler radar techniques ([Ostro 1993,Ostro et al., 1995a,Ostro et al., 1995b,Hudson and Ostro 1994,Hudson and Ostro 1995,Hudson and Ostro 1997]). They show that ECOs have irregular shapes, often resembling beat-up potatoes or even contact binaries. It is generally believed that these shapes are by-products of asteroid disruption events in the main belt and/or cratering events occurring after an ECO has been ejected from its immediate precursor. A few of these bodies, however, have such unusual shapes and surface features that we suspect an additional reshaping mechanism has been at work. As we will show, at least one ECO, 1620 Geographos, has the exterior characteristics, orbit, and rotation rate of an object which has been significantly manipulated by planetary tidal forces.
1620 Geographos is an S-class asteroid with a mean diameter slightly over 3 km. It was observed with the Goldstone 2.52-cm (8510-MHz) radar from August 28 through September 2, 1994 when the object was within 0.0333 AU of Earth ([Ostro et al., 1995a,Ostro et al., 1996]). A delay-Doppler image of Geographos's pole-on silhouette (Fig. 1) showed it to have more exact dimensions of 5.11 x 1.85 km ( 2.76 x 1.0, normalized), making it the most elongated object yet found in the solar system ([Ostro et al., 1995a,Ostro et al., 1996]). In addition, Geographos's rotation period (P = 5.22 h) is short enough that loose material is scarcely bound near the ends of the body ([Burns 1975]). For reference, Geographos would begin to shed mass for h if its bulk density was 2.0 g (Harris 1996; Richardson et al. 1998).
fig1
read the rest ar
[link to plutoportal.net] |
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ZOSIME
User ID: 384163
3/11/2008 10:39 AM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
very small but close
MPEC 2008-E79 - "15:28 UT" - 2008 EA9
K08E09A 2008 EA9 (risk-listed, Earth MOID=0.5 LD, H=27.7 ~10m) was discovered at 0943 UT on 6 March by MLS, which observed it at March 6.41-47p7, 7.33-35p4, 8.35-37p4, and 10.38-41p4. The discovery was confirmed by Spacewatch 1.8m (March 8.43-44p3). This object was within ten lunar distances (LD) of Earth, reaching 8.7 LD on 5 March. |
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ZOSIME
User ID: 384163
3/15/2008 6:44 AM
| | Re: Asteroid and Comet watch thread Neo 2008 | Quote |
MPEC 2008-E115 - "04:05 UT" - 2008 EZ84
K08E84Z 2008 EZ84 (small asteroid, Earth MOID=0.4 LD, H=26.2 ~19m) was discovered at 1019 UT on 12 March by the Catalina Sky Survey (CSS), which observed it at March 12.43-51p12 and 13.44-45p3. The discovery was confirmed by Modra Obs. (March 15.12-13p2). This object is now within ten lunar distances (LD) of Earth, reaching 9.5 LD on 15 March. |
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