Re: Need help identifying a flashing satellite

From: Christoffer Wallstenius (
Date: Thu Aug 22 2013 - 19:10:32 UTC

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    I just want to confirm that I did see object 39065 (IGS 8 Db E) again at
    the predicted time and location in the sky as per my previous mail. The
    flare pattern looked exactly like the one I saw on the night between agust
    5th and 6th. This time I timed the period of the flaring and got it to 12.3
    seconds. Deducting reaction time, I would say it's quite close to 12
    seconds. Object 39066 was not visible by naked eye nor 7x50 binoculars.
    Thank you all!
    Best regards,
    On Tue, Aug 20, 2013 at 4:17 AM, Christoffer Wallstenius <> wrote:
    > Thank you Cees, and Russell!
    > I am certain my mystery satellite is now identified! I loaded the TLE-data
    > from Mike McCants site into STK and then also into Stellarium, and
    > everything seems correct! I do remember that it passed very close to Caph
    > in Cassiopeia, now when I could have a "re-run" using Stellarium.
    > I must say it was a quite interesting turn to find out that I saw a part
    > from a rocket that launched spy satellites. I will try to catch a glimpse
    > of them tomorrow night, they should be visible from my location around
    > 22:42 UTC, passing pretty close to Capella in the Charioteer.
    > Best regards,
    > /Chris
    > On Mon, Aug 19, 2013 at 8:30 PM, C. Bassa <> wrote:
    >> Hi Christoffer,
    >> Thank you for clearing up the issue with summer time.
    >> Russell Eberst contact me offline and suggested that you may have seen
    >> the two halves of the payload fairing of the IGS 8 launch. These are
    >> objects 39065/13002E and 39066/13002F. Both seem to match your
    >> observation as they follow the same path on the sky separated by about
    >> 2 minutes (39065 leading 39066). These objects are known to flash and
    >> flare so I agree with Russell that one of these objects is a perfect
    >> match for your observation.
    >> These fairing halves belong to the rocket that launched IGS 8A and B.
    >> These are Japanese spy satellites. As such, the orbital elements of
    >> objects belonging to this launch are not published by SpaceTrack.
    >> Instead the observers here on SeeSat keep track of them. To run
    >> predictions for them you will have to download the classified elements
    >> by Mike McCants from
    >> Kind regards,
    >>     Cees
    > --
    > I enjoy the massacre of ads. This sentence will slaughter ads without a
    > messy bloodbath.
    I enjoy the massacre of ads. This sentence will slaughter ads without a
    messy bloodbath.
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