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Hubble Finds Smallest Kuiper Belt Object Ever Seen
NASA's Hubble Space Telescope has discovered the smallest object ever seen in visible light in the Kuiper Belt, a vast ring of icy debris that is encircling the outer rim of the solar system just beyond Neptune.
GEMINIDS 2009
This weekend, Earth passed through a stream of debris from 3200 Phaethon. In 1983 Whipple identified Phaethon like the parent of Geminid meteor stream. But it has never displayed unambiguous cometary activity. The Geminids provide the most impressive meteor display of any of the annual showers.
South African Fireball - November 21
After the Utah Fireball on Nov. 18, another bright fireball has been seen over South Africa aroud 11pm local time of Nov. 21, 2009. The meteor was spotted by dozens people as it passed over Johannesburg and Pretoria in Kauteng province on Saturday.
Dinosaur-killing impact set Earth to broil, not burn
The asteroid impact that ended the age of dinosaurs 65 million years ago didn't incinerate life on our planet's surface – it just broiled it, a new study suggests. The work resolves nagging questions about a theory that the impact triggered deadly wildfires around the world, but it also raises new questions about just what led to the mass extinction at the end of the Cretaceous period.
Utah Fireball - 18 November 2009
On Nov. 18, just after midnight local time (MST) a great fireball was seen over parts of the western United States
Leonids 2009
According to preliminary counts from the International Meteor Organization (IMO) the Leonids meteors reached a ZHR(max) ~ 120/130 around 22UT of Nov. 17, as predicted by forecasters.
Small Asteroid 2009 VA Whizzes By The Earth
A newly discovered asteroid designated 2009 VA, which is only about 7 meters in size, passed about 2 Earth radii (14,000 km) from the Earth's surface Nov. 6 at around 16:30 EST. This is the third-closest known (non-impacting) Earth approach on record for a cataloged asteroid.
Arxiv - The Sizes of Kuiper Belt Objects
One of the most fundamental problems in the study of Kuiper belt objects (KBOs) is to know their true physical size. Without knowledge of their albedos we are not able to distinguish large and dark from small and bright KBOs. Spitzer produced rough estimates of the sizes and albedos of about 20 KBOs.
Arxiv - The Dark Red Spot on KBO Haumea
Kuiper belt object 136108 Haumea is one of the most fascinating bodies in our solar system. Approximately 2000x1600x1000 km in size, it is one of the largest Kuiper belt objects (KBOs) and an unusually elongated one for its size.
Dynamical Constraints on the Origin of Main Belt Comets
In an effort to understand the origin of the Main Belt Comets (MBCs) 7968 Elst-Pizzaro, 118401, and P/2005 U1, the dynamics of these three icy asteroids and a large number of hypothetical MBCs were studied. Results of extensive numerical integrations of these objects suggest that these MBCs were formed in-place through the collisional break up of a larger precursor body.
Meteorite crashed into an SUV near Hamilton
Astronomers say they have found a meteorite fragment the size of a golf ball near Hamilton, which they believe streaked across the night sky above Southern Ontario in late September.
Asteroid Impactor Reported over Indonesia
On October 8, 2009 about 03:00 Greenwich time, an atmospheric fireball blast was observed and recorded over an island region of Indonesia. The blast is thought to be due to the atmospheric entry of a small asteroid about 10 meters in diameter that, due to atmospheric pressure, detonated in the atmosphere with an energy of about 50 kilotons (the equivalent of 100,000 pounds of TNT explosives).
Cosmic Blast Rattles Indonesia
Back on October 8th, something big lit up the late-morning sky (at about 3:00 Universal Time) over the island nation of Indonesia.
Ice Confirmed On An Asteroid
Frozen water leaves its signature over the entire surface of the asteroid 24 Themis
Asteroid isn't just a dry heap of rubble
Two teams have found evidence of water ice on the asteroid 24 Themis; the find suggests asteroids could have delivered some water to the early Earth
Fireball event of September 25, 2009
At 9:03 pm on Friday night September 25, 2009 (01:03 UT Sept 26) seven all-sky cameras of Western's Southern Ontario Meteor Network (SOMN) recorded a brilliant fireball in the evening sky over the west end of Lake Ontario.
Comet Lulin (2007 N3): a Detailed Look at a Corkscrew Morphology & the Fascinating 3-D Problem of Lulin’s Rotation by Lowell Observatory
During a presentation on Tuesday at the American Astronomical Society’s Division of Planetary Sciences meeting in Puerto Rico, Knight and colleague, David Schleicher, Lowell Observatory astronomer, described their research, Narrowband Observations of Comet Lulin (2007 N3).
Comet 10P/Tempel 2’s Nucleus Rotation Determined to Within 10 Seconds
Lowell astronomer David Schleicher led a team that made the best measurement of the comet’s rotation period, showing that the rotation period of Tempel 2’s nucleus has lengthened, or the comet has slowed down, by about 10 seconds every five years.
NASA Refines Asteroid Apophis' Path Toward Earth
Using updated information, NASA scientists have recalculated the path of a large asteroid. The refined path indicates a significantly reduced likelihood of a hazardous encounter with Earth in 2036.
Comets & Neo: New Comet Discovery: P/2009 QG31
IAU circular No. 9078, issued on 2009, Sept. 29, announces that an asteroidal object, discovered with a 0.45-m f/2.8 reflector + CCD by the "La Sagra Sky Survey" (Spain), has been reported to show cometary features by several observers, involved in its astrometric follow-up.
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