NOAA9 vs. NOAA17

From: Dale Ireland (
Date: Sat Jun 29 2002 - 20:03:59 EDT

  • Next message: Kevin Fetter: "Re: NOAA9 vs. NOAA17"

    The new NOAA17 is in an orbit almost identical to NOAA9. Today they flew in
    formation and passed each other slowly around 1900UT. They are still quite
    close. I wonder if anyone's tracking program can tell the minimum
    separation. Looks like it may have been less than 20mi for a while.
    Weather sat buffs like me still watch the NOAA9 position because although
    its systems have long since been deactivated, its APT transmitter somehow
    came back to life a few years ago and it transmits a carrier wave that
    interferes with the other NOAA sats. The faint signal slowly rises and falls
    as it tumbles and light hits its solar panels. Seems to have about a 45
    second period. Not sure if anyone has confirmed this with visual flash
    Unsubscribe from SeeSat-L by sending a message with 'unsubscribe'
    in the SUBJECT to

    This archive was generated by hypermail 2b29 : Sat Jun 29 2002 - 20:07:52 EDT