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yesterday November tomorrow
Sunday23 November 200311:15pm MST2003-11-24 UTC 0615
Today's news about Asteroids, Comets & Meteors
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News briefs

New-found:  MPEC 2002-W43 today announces 2003 WH26, which travels an eccentric (e=0.5386) orbit that approaches both Mars and Jupiter. It is estimated at roughly 1.25 km. (0.774 mile) wide and was discovered Friday morning by LINEAR during the same 20-21 November period in which LINEAR also discovered three NEOs of kilometer size (report).

Radar:  Today's Daily Orbit Update MPEC carries daily radar observations of 68950 2002 QF15 [link|alt] during 5-9 November from Arecibo in Puerto Rico. See a report from the 6th.

Aurora:  SpaceWeather.com has a gallery of November aurora images which includes on page 4 an image from Albuquerque, New Mexico the night of November 20th, when a meteor and its trail were also widely seen (see A/CC report). Page 5 has an image from northern California from the same night, where there was also a widely observed event that may have involved a meteor (report). There are more images in that gallery from all over the world of aurora that night, and Sormano Observatory in Italy has a posting on its own gallery page.




Risk monitoring 23 Nov.

Today's Daily Orbit Update MPEC (DOU) reports observations of 2003 WG from the night before from Consell Observatory in Spain, from last night by KLENOT in the Czech Republic, and early today from the Spacewatch 1.8m telescope in Arizona. Today both risk monitors very slightly raised their overall risk ratings for this object.

No new observations were reported in the DOU for 2003 WY25, but the Minor Planet Center Last Observation page is showing that Camarillo Observatory in California caught it this morning.

Summary Risk Table - sources checked at 0534 UTC, 24 Nov

Object

Assessment

Years

VI
PS
cum
PS
max
T
S
Arc 
days
 2003 WY25JPL 11/232100-21001-5.45-5.45028.725
 2003 WW26JPL 11/242045-20809-4.53-4.9202.710
 2003 WG NEODyS 11/232055-20551-2.33-2.3304.948
JPL 11/232055-20982-2.34-2.3404.948
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.

Late update:  At the end of the day UT, MPEC 2003-W44 announced 2003 WW26, which JPL has since posted to its Current Impact Risks page. The MPEC puts absolute magnitude at 22.3 and JPL at 22.1, so roughly 120-130 meters/yards wide but not "potentially hazardous." LINEAR discovered WW26 Friday morning and four other observatories picked it up this morning and tonight.

http://www.HohmannTransfer.com/mn/0311/23.htm
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