Near-Earth Asteroid 2007 TU24 to Pass
Close to Earth on Jan. 29 - Should be
Observable with Modest Sized Telescopes
Don Yeomans
NASA/JPL Near-Earth Object Program Office
January 22, 2008
Asteroid 2007 TU24, discovered by
the Catalina Sky Survey on October 11,
2007 will closely approach the Earth to
within 1.4 lunar distances (334,000 miles)
on 2008 Jan. 29 08:33 UT. This object,
between 150 and 600 meters in diameter,
will reach an approximate apparent
magnitude 10.3 on Jan. 29-30 before
quickly becoming fainter as it moves
further from Earth. For a brief time the
asteroid will be observable in dark and
clear skies with amateur telescopes of 3
inch apertures or larger.
For an interactive illustration of
this object's orbit see:
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007+TU24&orb=1
The illustration below is courtesy
of amateur astronomer Dr. Dale Ireland
from Silverdale, WA. The illustration
shows the asteroid's track on the sky for
3 days near the time of the close Earth
approach as seen from the city of
Philadelphia. Since the object's parallax
will be a significant fraction of a
degree, observers are encouraged to use
our on-line Horizons ephemeris generation
service for their specific locations.
These personalized ephemeris tables can be
generated at:
http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2007%20TU24
| Given the estimated number of
near-Earth asteroids of this size
(about 7,000 discovered and
undiscovered objects), an object of
this size would be expected to pass
this close to Earth, on average, about
every 5 years or so. The average
interval between actual Earth impacts
for an object of this size would be
about 37,000 years. For the January
29th encounter, near Earth asteroid
2007 TU24 has no chance of hitting, or
affecting, Earth.
2007 TU24 will be the closest
currently known approach by a
potentially hazardous asteroid of this
size or larger until 2027. Plans have
been made for the Goldstone planetary
radar to observe this object Jan 23-24
and for the Arecibo radar to observe
it Jan 27-28 and then Feb 1-4. High
resolution radar imaging is expected,
which may permit later 3-D shape
reconstruction. |
From:
http://neo.jpl.nasa.gov/news/news157.html
1-27-08 The Associated Press
Space scientists and
government officials are
tracking two massive objects
that are hurtling toward
Earth, but only one, a dead
satellite the size of a bus,
is expected to hit somewhere
on the globe.
Government officials said
Saturday that a large U.S. spy
satellite has lost power and
could hit Earth in late February
or early March. And an asteroid
at least 500 feet long will make
a rare close pass by Earth early
Tuesday, but scientists say
there is no chance of an impact.
The
satellite, which no longer can
be controlled, could contain
hazardous materials, and it is
unknown where it might come
down, said the government
officials, who spoke on
condition of anonymity because
the information is classified as
secret.
"Appropriate government agencies
are monitoring the situation,"
says Gordon Johndroe, a
spokesman for the National
Security Council.
John
Pike, director of the defense
research group
GlobalSecurity.org, estimates
that the spacecraft weighs about
20,000 pounds and is the size of
a small bus. Satellites have
natural decay periods, and it's
possible this one died as long
as a year ago and is just now
getting ready to re-enter the
atmosphere.
Jeffrey
Richelson, a senior fellow at
the National Security Archive,
says the spacecraft probably is
a photo-reconnaissance
satellite. Those are used to
gather information from space
about adversarial governments
and terror groups and to survey
damage from hurricanes, fires
and other disasters.
The
closest approach of the
asteroid, known as 2007 TU24, is
expected to be at 334,000 miles,
or about 1½ times the distance
of Earth to the moon.
The
nighttime encounter should be
bright enough for medium-size
telescopes to get a glimpse,
says Don Yeomans, manager of the
Near-Earth Object Program Office
at NASA's Jet Propulsion
Laboratory, which tracks
potentially dangerous space
rocks. The closest approach is
expected to be at 3:33 a.m. ET.
The
asteroid TU24 is one of an
estimated 7,000 so-called
near-Earth objects.
An actual
collision of a similar-size
object with Earth occurs on
average every 37,000 years.
Spotted
in October by the NASA-funded
Catalina Sky Survey in Arizona,
TU24 is estimated to be 500 to
2,000 feet long.
The next
time an asteroid this size will
fly this close to Earth will be
in 2027.
Contributing: Reuters
Asteroid
zips past Earth, but satellite is
expected to hit
The Associated Press
Contributing: Reuters
It's all right folks,
that was just a massive asteroid
Article from: News.com.au
- Mass extinction
event averted
- Asteroid continuing
as before
-
Other space stuff: The
latest on UFOs
A MASSIVE asteroid that
was first spotted only four
months ago has just zoomed
past Earth.
The space rock, uninspiringly
named TU-24 and roughly 250m
in diameter, passed by at only
around 1.4 times the moon's
distance from Earth.
Boffins who scan the sky for
asteroids on potentially
deadly trajectories first saw
the rock on October 11 last
year.
Yesterday astronomers
got a good look at the
asteroid, which was so big
that it would have caused
devastating regional damage
had it struck Earth's surface.
DC Agle, a spokesman for
NASA's Jet Propulsion
Laboratory in California,
said: "I can confirm it came
the closest to Earth ... and
it's on its way, away from
Earth".
TU-24 flew by at 4.30pm AEDT
yesterday.
Earth was never in danger of
being struck by the asteroid
as it passed within 538,000km
of our planet, or 1.4 times
the Moon's distance from
Earth.
The asteroid's fly-by "is the
closest until at least the end
of the next century", JPL
senior astronomer Steve Ostro
said.
"It is also the asteroid's
closest Earth approach for
more than 2000 years."
For a brief period, the
asteroid was visible in dark
and clear skies with amateur
telescopes of 7.5cm or larger.
NOTE: David Sereda says a source of
his alludes to a contact at Lockheed, we
may have sent a craft to divert the orbit
of TU-24 Around 6:00 p.m.
fireballs were seen coming down in
California and some people saw a white
light fly around the fireball pieces -
so maybe it really did hit earth after it
was broken up.
Orange And LA
County, California
Falling Object Comes
To A Complete Stop -
Hover
|
|
Posted: January 27, 2008
Date: January 26, 2008 Time:
6:00 p.m.
Location of Sighting: Orange
and LA County. Number of
witnesses: 2 Number of
objects: 2+ Shape of objects:
Glowing orbs.
Full Description of
event/sighting: My husband and
I were driving approximately
west bound at about 6:00pm
PST. In the sky was a bright,
glowing light falling toward
earth with a bright tail of
light. First thought that it
was a falling star, but both
of us realized it was huge and
too close to the earth for
that and said to each other,
its going to crash into the
earth. Then it stopped falling
and appeared to hover, the
tail of light extinguished and
the main ball of light
remained very bright. It faded
in and out and then traveled
horizontally very quickly.
Another glowing light seemed
to be circling around it in a
wide pattern.
Both very bright lights,
brighter than airplane
headlights. Farther away from
these two was another light,
blue, and very small. It
seemed to be circling these in
a very wide pattern and we
thought it to be airplane
watching the phenomenon. We
didn't pull over and kept
driving toward them, but, they
got lower to the horizon and
we lost sight of them behind
trees as the road we were on
dipped. When we got back to an
unobstructed spot, the lights
were gone. The event lasted
about 5-10 minutes. Despite
the highly visible, quite
spectacular and unusual
display in the night sky, not
one report of it could be
found on news stations or in
the OC Register. In discussing
it's location, we estimate
that it was approximately 50
miles away which would make it
over LA County even though we
were seeing it from Orange
County.
Thank you to the witness for
this fascinating sighting
report.
Brian Vike, Director HBCC UFO
Research and host of the Vike
Report UFO Eyewitness radio
show. email: hbccufo@telus.net
Website: http://www.hbccufo.org
http://www.brianvike.com,
http://www.hbccufo.com,
http://www.hbccufo.net HBCC
UFO Research International:
http://www.hbccufointernational.org/
Radio show host for the Vike
Report, eyewitness relating
their experiences. http://jancikradionetwork.com/innerstreamsradio/show/vike_report/index.html
Just added, the Vike Report
Radio Show Blog. You can check
the blog out for archived
radio shows and all the new
and upcoming programs I do.
http://thevikereport.blogspot.com/
HBCC UFO Research, Box 1091
Houston, British Columbia,
Canada - VOJ 1ZO
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