-------------------------------------------------------------------------- MPC Ephemerides for Objects with Impact Solutions & Recently in News --------------------------------------------------------------------------
Note: As a convenience to NEO observers, this form obtains formatted data from the IAU Minor Planet Center, which is not associated with A/CC. List dated as of 1702 UTC on 30 December 2020
Visibility - apparent magnitude & solar elongation at 0600 UTC on Dec. 31st - V > 22.0 is out of view for most observers & V > 24.4 is out of view for almost everyone else - el. < 60.0° is leaving view for many observers & el. < 40.0° is out of view for everyone Arc - the longest observing arc (in days) used by either risk monitor for its risk analysis VI#1 - the year with the earliest virtual impactor solution currently listed by either risk monitor Last news - last day UTC on which A/CC had news to report about this object's risk assessment Cum. prob. - highest cumulative probability calculated for Earth impact (1.0/1.0e-06 = "one in a million") TS - highest Torino Scale rating reported by either risk monitor for this object PS cum. - highest Palermo Scale cumulative rating reported by either risk monitor PS max. - highest Palermo Scale maximum rating reported by either risk monitor