Dec 15 - Asteroid 2006 US216 Near-Earth Flyby (0.067 AU) -
Missed Us - for now

Go ahead, thumb your nose, nah, nah, you missed me, THIS TIME!
- LRK -

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http://hea-www.harvard.edu/~fine/Astro/flybys.cgi?page=detail&object=2006+US216&when=2006-12-15%26nbsp;07:11:00

Tom's Asteroid Flybys - 2006 US216 @ 2006-12-15 07:11:00
Minimum Distance (A.U.) 0.06727
Date/Time of Minimum Distance 2006-12-15 07:11:00
Maximum Predicted Brightness 18
Date/Time of Maximum Brightness 2006-12-13 00:00:00
Maximum Apparent Speed (arcseconds/minute) 15.15
Date/Time of Maximum Speed 2006-12-15 03:00:00
H (Absolute Magnitude) 19.9
Oppositions 1
Duration of Observations 30 days
Potentially Hazardous Asteroid? Yes

The following plot shows the path of the asteroid during a five-day period
which includes the time of closest approach. The plot begins at midnight
Universal Time, two days before the closest approach.

This path is approximate, and was generated for Cambridge, Massachusetts.
Other locations will see slightly different paths, especially if it is a
very close approach.

The path is represented by a bright green line (in many cases it's a very
short line, but it's there). Blue tick marks indicate midnight Universal
Time, and run along the right side of the path, hence also indicating
direction. On the left side of the path, are a red tick mark denoting
minimum distance (bug fix needed), a white tick mark indicating maximum
brightness, and a green tick mark indicating maximum speed.

Snip
[Nice plot - see web site - LRK -]
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Take a look at the JPL link below as well.  It is a nice, small, orbit,
pretty much in the ecliptic plane, and it will be back 2007/12/07 at about
0.052 AU.
- LRK -

http://neo.jpl.nasa.gov/cgi-bin/db_shm?des=2006+US216
And here as well.
- LRK -
http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2006US216;main


Thanks for looking up with me.
(I know, you are all running for shelter, I only see 872 of you.)


Larry Kellogg

Web Site: http://lkellogg.vttoth.com/LarryRussellKellogg/
BlogSpot: http://kelloggserialreports.blogspot.com/
RSS link: http://kelloggserialreports.blogspot.com/atom.xml
Newsltr.: https://news.altair.com/mailman/listinfo/lunar-update
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Checking the JPL Calendar periodically can give you a hint as to what might
be dropping in or remind us of what we have launched nearby. - LRK -
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http://www2.jpl.nasa.gov/calendar/
#
# Dec 15 -Hot[Dec 12] STEREO A & B, 1st Moon Flyby
http://stereo.jhuapl.edu/
http://stereo.jhuapl.edu/mission/statusArchives/statusCurrent.php
# Dec 15 - ETS VIII H-2A Launch (Japan)
# Dec 15 -Updated[Dec 13] Roadrunner (TacSat 2)/ Genesat 1 Minotaur 1 Launch
# Dec 15 -Updated[Dec 09] Cassini, Orbital Trim Maneuver #83 (OTM-83)
# Dec 15 - Comet P/2000 R2 (LINEAR) Perihelion (1.456 AU)
# Dec 15 - Asteroid 11875 (1989 YG5) Occults HIP 33595 (6.2 Magnitude Star)
# Dec 15 - Asteroid 2006 US216 Near-Earth Flyby (0.067 AU)
http://neo.jpl.nasa.gov/cgi-bin/db_shm?des=2006+US216
# Dec 15 - 40th Anniversary (1966), Audouin Dollfus' Discovery of Saturn
Moon Janus

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http://cfa-www.harvard.edu/iau/lists/Dangerous.html
List Of The Potentially Hazardous Asteroids (PHAs)
Information on converting absolute magnitudes to diameters is available, as
is an explanation of the quantities given in the listings above.

A list of close approaches to the earth through the end of the 21st century
is available.

Snip
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http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2006US216;main
2006US216
Services:

* Ephemerides
http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2006US216;ephpred
* Observation Prediction
http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:2006US216;obspred

Orbital Information:
Snip

Close Approaches (from 1950 to 2100):
Snip

Snip
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http://cfa-www.harvard.edu/iau/lists/PHACloseApp.html
PHA Close Approaches To The Earth
The following table lists the predicted encounters by Potentially Hazardous
Asteroids (PHAs) to within 0.05 AU of the earth from the start of this year
through 2178. Objects with very uncertain orbits are excluded from this
listing, as are recently discovered objects whose orbits have been computed
without consideration of planetary perturbations. The distances quoted are
from the nominal orbit solutions in the cited references and can be quite
uncertain, particularly for one-opposition objects. Perturbed orbital
solutions consider perturbations by eight major planets (Mercury to
Neptune), three minor planets (Ceres, Pallas and Vesta) and treat the earth
and the moon as separate perturbing bodies. For comparison, the mean
distance of the moon is 0.0026 AU = 384400 km = 238900 miles. (1 AU is
approximately the mean distance of the earth from the sun = 149597870 km =
92955810 miles.)
Snip

Object (and name)     Date of encounter (TT)       Distance
      Orbit arc          Reference       Object (and name)

2006 US216        2466115.52  2039 Nov. 23.02   0.04466
1-opposition, arc = 30 days   E2006-WB4        2006 US216

Snip
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http://www.cfa.harvard.edu/iau/lists/CloseApp.html
Forthcoming Close Approaches To The Earth
The following table lists the predicted minor-planet and comet encounters to
within 0.2 AU of the earth during the next 33 years (from the start of this
year). Objects with very uncertain orbits are excluded from this listing, as
are recently-discovered objects whose orbits have been computed without
consideration of planetary perturbations. The distances quoted are from the
nominal orbit solutions in the cited references and can be quite uncertain,
particularly for one-opposition objects. Perturbed orbital solutions
consider perturbations by eight major planets (Mercury to Neptune), three
minor planets (Ceres, Pallas and Vesta) and treat the earth and the moon as
separate perturbing bodies.

Also available is a list of PHA close-encounters from the start of this year
through the end of 2178 and a list of earth-approaches within 0.2 AU over
the period 1900-2178.

Please read our Web policy document.

Snip
Object (and name)   Date of encounter (TT)      Distance
                 JD         Calendar        (AU)
Orbit arc                  Reference   Object (and name)

2006 US216        2454084.89  2006 Dec. 15.39   0.06727
1-opposition, arc = 30 days    E2006-WB4     2006 US216 

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http://hea-www.harvard.edu/~fine/Astro/flybys.cgi
Tom's Asteroid Flybys Webpage
This is a list of upcoming asteroid flybys (close approaches). This table is
based on information from the Minor Planet Center.

Here's a brief description of some of the columns:
# Distance is in Astronomical Units; for reference the moon is 0.0025 A.U.
from the earth.
# V is visual magnitude, or brightness. Smaller is brighter.
# Speed how faster the asteroid appears to move through the sky, measured in
arcseconds per minute.
# H is absolute magnitude, sort of related to how big it is (smaller is
brighter/bigger).
# PHA is Potentially Hazardous Asteroid. Don't worry, it's not as bad as it
sounds.

Object Name   When       Distance       V  When V
Speed  When Speed          H     Opps  Observation
PHA   Added       Updated

2006 US216   2006-12-15 07:11:00  0.06727  18  2006-12-13
00:00:00
15.15  2006-12-15 03:00:00  19.9  1  30 days
Yes  2006-11-03  2006-12-03

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Interesting web site from an AMIGA Computer enthusiast - LRK -
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http://mysite.wanadoo-members.co.uk/blobrana/nmonth/index.html
December 2006 Astronomy Calendar

http://mysite.wanadoo-members.co.uk/blobrana/index.html
Amiga the best OS in the World

http://mysite.wanadoo-members.co.uk/blobrana/news/index.html
Astronomy News at Blobrana Online

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WHAT THE MIND CAN CONCEIVE, AND BELIEVE, IT WILL ACHIEVE - LRK

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