|Wednesday||31 December 2003||4:58pm MST||2003-12-31 UTC 2358|
The last Daily Orbit Update MPEC (DOU) for the year 2003 reports observations of 2003 YG118 and 2003 YK118 from LINEAR from early yesterday in New Mexico. Today NEODyS removed 2003 YG118 and JPL's new YG118 risk assessment is down to one low-rated impact solution. JPL has now posted 2003 YK118 and NEODyS, which posted it yesterday, today cut the count of impact solutions while raising its overall YK118 risk ratings.
The DOU doesn't report new data for the other three objects with impact solutions that are currently in view, but the Minor Planet Center Last Observation page is showing that Siding Spring Observatory caught 2003 YD45 and 2003 YE45 yesterday in Australia.
Today the European Spaceguard Central Node Priority List dropped tiny 2003 YS70, which it had put at level 1 "Urgent" and had noted will go out of view for most observers tomorrow.
Update: JPL has posted 2003 YH136, which was announced today in MPEC 2003-Y98 as discovered on December 28th by LINEAR and followed up by Sabino Canyon Observatory yesterday morning in Arizona and this morning by the Observatorio Astronomico de Mallorca (OAM). JPL puts YH136's diameter at about 560 meters/yards.
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