Author Topic: Soyuz-2.1v - Kosmos 2525 (EMKA) - Plesetsk - March 29, 2018 (17:38 UTC)  (Read 22600 times)

Offline Phillip Clark

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Following on from my message yesterday, still no new TLEs for the Blok I from the Cosmos 2525 launch, although the Satellite Situation Report continues to show it as being in orbit.
I've always been crazy but it's kept me from going insane - WJ.

Offline Phillip Clark

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The Block I has had two new element sets issued for April 28, so it is still chugging around up there.   I wonder why there was the four days gap in the data.
I've always been crazy but it's kept me from going insane - WJ.

Offline Phillip Clark

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I admit that this mission has been a bit of a disappointment, since there have been no manoeuvres of Cosmos 2525 to date.

The most recent orbital data for the mission are:

Cosmos 2525
May 17.714    96.632 deg      90.700 min     307-311 km

Blok I
May 17.605    96.636 deg      90.648 min     304-309 km
I've always been crazy but it's kept me from going insane - WJ.

Offline Phillip Clark

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Very small, but it looks as if there was a tweak to the Cosmos 2525 orbit yesterday.

May 23.241    incl - 96.633 deg      period - 90.682 min     altitude - 306-310 km    AoP - 126 deg
May 23.306            96.631                         90.695                          307-310                     88
I've always been crazy but it's kept me from going insane - WJ.

Offline Alter Sachse

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No manoeuvres of Cosmos 2525
March 29  96.64 deg 90.87 min 316 319 km
July    09  96.63       90.53        299 302

Offline Phillip Clark

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No manoeuvres of Cosmos 2525
March 29  96.64 deg 90.87 min 316 319 km
July    09  96.63       90.53        299 302

Just the very small manoeuvre which I reported on May 24.
I've always been crazy but it's kept me from going insane - WJ.

Offline Alter Sachse

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No manoeuvres of Cosmos 2525
March 29  96.64 deg 90.87 min 316 319 km
July    09  96.63       90.53        299 302

Just the very small manoeuvre which I reported on May 24.
Or it was inaccurate data ?

Offline Phillip Clark

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No manoeuvres of Cosmos 2525
March 29  96.64 deg 90.87 min 316 319 km
July    09  96.63       90.53        299 302
Just the very small manoeuvre which I reported on May 24.
Or it was inaccurate data ?

I don't believe so.   If you follow the argument of perigee - for example - before and after it is consistent with a tiny orbital change.   Also an error in the mean motion to give the orbital period would not result in the change in orbital eccentricity.

However, this manoeuvre is close to what I consider to be the limits of the TLE data.
I've always been crazy but it's kept me from going insane - WJ.

Offline Alter Sachse

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I thought he would raise his orbit or holding a certain level (to do his job).
But he falls and falls.

Offline Phillip Clark

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I thought he would raise his orbit or holding a certain level (to do his job).
But he falls and falls.

Agreed.   I had hoped for more.   I am assuming that there hasn't been a malfunction.
I've always been crazy but it's kept me from going insane - WJ.

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