Iridium and HST

Robert H. McNaught (
Mon, 9 Mar 1998 14:44:39 +1100 (EST)

Our all-sky fireball cameras have recorded many brightenings from HST, and
when it gets as bright as mag -2 or brighter, the intensity profile is
similar to the Iridiums.  The major difference is that the background
intensity of the satellite is higher for HST, making the "wings" of the
brightening flatter.  The peak intensity from examination of several
photographs looks just like Iridiums of similar intensity.
Cheers, Rob McNaught
peak intensity profile