Wednesday13 October 20047:08pm MDT2004-10-14 UTC 0108 last
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News briefs

Big NEO:  The Wednesday Daily Orbit Update (DOU) MPEC 2004-T63 reports a standalone-MPEC's worth of observations located in the archives for 2004 TU12, which was announced two days ago (see news) and is the largest NEO discovered since 25916 2001 CP44 was found three and a half years ago, in March 2001.

Here are the details, with some asides for readers who would like to learn how to read this formatted data for themselves. 2004 TU12 is identified in Minor Planet Electronic Circulars by its packed designation, K04T12U, and today's DOU shows thirteen lines, each reporting a single archival astrometric position, beginning with 10 April 2000 at LONEOS in Arizona (identified by MPC code 699 at line end). Following those lines are positions from NEAT's telescope on Haleakala (608) in Hawaii on 23 March 2001 and its telescope on Mt. Palomar (644) on 9 April 2002, and from the European Southern Observatory at La Silla (809) in Chile on 24 January 2003. This set is identified with program code “9” (adjacent to the “C” CCD code and year),

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which keys to Andrea Boattini of the European Spaceguard Central Node (SCN), and could come from any of several telescopes at La Silla.

Today's DOU also reports the newest observation of 2004 TU12, from North Ryde Observatory (423) in Australia yesterday.

Update:  A/CC has been informed that the work reported today bringing 2004 TU12 from a two-day to a five-opposition observing arc was done by Genny Sansaturio using the Minor Planet Center's ONS (one-night-stand) file — observations that were reported to the MPC but not linked to an identified object at the time. See more about this identification work.

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News briefs – panel 2/2 Major News for 13 Oct. 2004 previous
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NEO recovery:  MPEC 2004-T64 today reports a rare recovery of an object with absolute magnitude H>22.0 (H=22.7 in this case). Jim Scotti caught 2003 UO25 early on 12 and 13 October with the Spacewatch 1.8m telescope in Arizona. 2003 UO25 hadn't been reported since last November 16th, when it had an observing arc of 22.943 days with only 49 positions reported.

Meteor news:  In regard to “Other meteor news” yesterday, Mike McCants noted to the SeeSat mailing list that another account at WANE-TV tells how “The observer had time to get in his truck and drive to a place to get a better view and then run his camcorder until the battery died.” Fireballs are very transient events, and Marco Langbroek concurs that this account “only leaves a sunlit aircraft contrail as an explanation.”

UKAPP:  The U.K. Particle Physics and Astronomy Research Council (PPARC) has a news release today announcing the U.K. Astrometry and Photometry Programme for Near-Earth Objects (UKAPP) under Alan Fitzsimmons. It will use Faulkes 2m educational robotic telescopes in Hawaii and Australia for “providing a vital component to the world-wide effort of identifying and monitoring rogue asteroids and comets,” as well as spending some time to study their physical make-up. This is an extension of the former override program run from Queens University in Belfast that used U.K. telescopes on La Palma in the Canary Islands to contribute some critical PHO observations.

The UKAPP site says that the nature of robotic operation means its work can be done without “any significant impact on the primary use of the telescopes by schools and education centres.” Beyond that, students in the U.K., Hawaii, and Australia will also be able to participate in studying asteroids and comets, including NEO follow-up, but under an advisory against submitting poor quality data to the MPC, at risk of suspended priveleges.

Risk monitoring - panel 1/1 Major News for 13 Oct. 2004 previous
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Risk monitoring yesterday 13 Oct. tomorrow

The Wednesday Daily Orbit Update MPEC (DOU) carries observations of all three objects that have been in recent view and listed with impact solutions. A single position is reported for 2004 TL10 from very early yesterday at Beaconsfield Observatory in England, and seven positions from early this morning UT at KLENOT in the Czech Republic. Today NEODyS and JPL removed their single remaining impact solutions for this object, which JPL estimates to be on the order of 190 meters/yards wide.

The DOU reports observation of 2004 RQ252 from the Siding Spring Survey (SSS) in Australia, which discovered this small object almost a month ago. There are two positions from October 7th, on either side of a set from that day that SSS reported last week. And there is one position from the 8th that added 4.3 minutes to the 22.775-day observation arc. With this new data, NEODyS today changed its risk assement to a single lower-rated impact solution in 2017. 2004 RQ252 was predicted to go out of view yesterday.

2004 TN1 is reported from KLENOT last night, and today both risk monitors lowered their risk assessments for this object, estimated to be slightly smaller than 2004 TL10.

Summary Risk Table - sources checked at 2359 UTC, 13 Oct

Object

Assessment

Years

VI
PS
cum
PS
max
T
S
Arc 
days
 2004 TN1 NEODyS 10/132013-20603-2.67-2.6707.708
JPL 10/132013-20604-2.90-2.9107.708
 2004 TL10JPL 10/13R E M O V E D
NEODyS 10/13R E M O V E D
 2004 RQ252 NEODyS 10/132017-20171-6.92-6.92022.778
JPL 10/3R E M O V E D
VI = count of "virtual impactors" (impact solutions)
See A/CC's Consolidated Risk Tables for more and maybe
  newer details, and check the monitors' links for latest info.
Note that only objects recently in view are shown here.
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