The object designated 2001 DO47 was discovered on 2001 Feb. 19 by R. S. McMillan with the 0.9-meter Spacewatch Telescope. It was detected as a trailed image because it was moving fast.
During routine scanning with the Spacewatch 0.9-meter telescope on 2000 November 28, observer R. S. McMillan was manually blinking the displayed scans in real time and noticed this relatively slow-moving object. Its rate of motion was too slow for the real-time software to detect; normally the slower objects such as this one are found with another program that processes the data off-line.
Rediscovery images of (719) Albert on 2000 May 1, by Spacewatch observer Jeff Larsen. The asteroid can be seen moving slowly to the upper-right near the center of each frame. Images were taken approximately 8 minutes apart, beginning around 4:47 UT.
The asteroid 2000 BF19 was discovered by Spacewatch observer Jim Scotti on the night of January 28, 2000. Observations made the next few nights generated an orbit that predicted a pass near the Earth again in the year 2011.
The asteroid 1998 KY26 was discovered by Tom Gehrels on the night of May 28, 1998 (UT) during a routine scanning session. Although appearing as a small dot on the screen like any other asteroid, this near-Earth asteroid has some interesting properties.
As many as 900 large asteroids (a kilometer or greater) in the inner solar system may pose a possible threat to the Earth, according to a new study published in the June edition of the journal Science.