ASTEROID 1997 XF11
© 1998-2001 by Richard Nolle published MAR 16, 1998 updated MAY 14, 2001
Asteroid
1997 XF11 created quite a stir around the time of the March
13, 1998 lunar eclipse. This is the mile-wide minor planet which is due
to make - by astronomical standards at least - an earth-grazing near miss
with our home planet on October 26, 2028 at about 2:30 AM EDT (which works
out to 6:30 AM GMT). 1997 XF11 was first sighted by
Jim Scotti at the Kitt Peak National Observatory in Arizona (111oW35'51",
31oN57'36") on December 6, 1997 at 4:20:04 AM MST.
Herewith, a discovery chart for the thing . . . For more on this asteroid,
see the Astropro NetSelect Directory, Solar
System Section, Minor Planets heading. These links will take you to
the discovery photo of the asteroid, an ephemeris (right ascension/declination)
and orbit diagram, plus much more.
While
first reports concerning the 2028 perigee of Asteroid 1997 XF11
raised the specter of a possible collision with Earth, NASA reported on
March 13, 1998 that previously unrecognized photos of the asteroid dating
back to 1990 had enabled a more accurate calculation of its orbit. The
new figures put the asteroid's distance from Earth at about 600,000 miles
in 2028. That's still a near-miss by astronomical standards - but a definite
no-hitter if the calculations prove valid. (Further observations will help
refine those figures over the next several months and years.) Herewith,
a chart for the October 26, 2028 'near-miss' data . . . Coordinates are
set for the Great Pyramid in Egypt for no particular reason, other than
my own preference to use that location for events that don't have their
own unique geographic coordinates.
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