Both IR5 and IR 51 passed close together on this pass, less than 2 minutes apart. This observation was, as noted below, that of IR 5---not IR 51. IR51 was separately observed yesterday morning. It was indeed anomalous (as in the past) with slow variation to magnitude +3.5. So, the appearnces of these two vehicles seem to be more or less normal. I suggested that Rob Matson look at this simply because Iridflar did not predict the -2 magnitude flare as being as bright as it actually was. It could also be that the attitude orientation of IR 6 is slightly off so as to create off-nominal flaring. Paul -----Original Message----- From: Rod Sladen [mailto:rodsladen@crosswinds.net] Sent: Wednesday, August 22, 2001 10:18 AM To: SeeSat-L@lists.satellite.eu.org; MALEY, PAUL D. (JSC-DO) (USA) Subject: Re: IR6 flare not predicted by Heavens-Above; IR5 observed Paul Maley (paul.d.maley1@jsc.nasa.gov) wrote: > I saw a bright flare (about -2 magnitude) from Iridium 6 at > 1039UT on 22 Aug. 01 from the site coordinates listed below. > Lat. 29.6049N, Lon. 95.1069W, Alt. 6m > This flare was not predicted by H-A. Iridflar predicts this flare as only mag. +1.9 which is fainter than the Heavens-Above cut-off limit (mag.0). > IR 5 was also observed at 1026UT and there was no sign of any > anomalous behavior. Or IR 51, whichever it really is! (presumably not flaring) -- Rod Sladen, Beeston, Nottinghamshire, UK 52.9230N, 1.2190W ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Wed Aug 22 2001 - 08:35:18 PDT