Solar System
1997 XR2

1997 XR2 was discovered on December 4, 1997 by the NASA-founded LINEAR asteroid survey.
This asteroid has led the Impact Risk page since early 2002 to February 2006.
On February 24, 2006, 1997 XR2 was observed by Mt. Lemmon Survey after being lost for more than 8 years.
The refinement of its orbit eliminated the possibility of impact in 2101 (sprawdzić)!).
The object is estimated at 200—460 metres.

Older results based on shorter arcs

Number of original observations: 183
Arc : 1997 12 04 - 2007 01 15
Nominal rms: 0″.71 (355 residuals)

Possible collisions: not detected

External links:

1997 XR2 page (NASA JPL) and Impact Risk page NEO Program (NASA JPL)
1997 XR2 page and Impact Risk page at the NEO Dynamic Site (NEODyS)

Solar System Dynamics & Planetology Group, 2008. All rights reserved