Track & Stack
•Example:
2004 TD18 21/22 October 2004
•120 x 30s exposures = 1 hour total exposure
Stacked
for motion of NEO 2004 TD18 (2.1”/min in pa 230º)
Stacked
with zero motion
Stacked
for motion of 16th mag
main belt asteroid 42454 (0.5”/min in pa 259º)
Listed with impact
solutions from 15 Oct 2004, ephemeris mag +21.1