Author Topic: Rokot/Briz-KM with 3 Rodnik + Kosmos 2491 - December 25, 2013 (0031UTC)  (Read 13949 times)

Offline Artyom.

December 25 – in interests of Russian Ministry of Defence – Rokot/Briz-KM – Plesetsk 133/3

The launch on December 25 will orbit three Rodnik satellites.
« Last Edit: 11/18/2014 05:17 PM by input~2 »
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Offline Artyom.

As per http://www.rg.ru/2013/12/19/reg-szfo/rokot-anons.html, subject to the decision by the State Commission, the  Rokot launch vehicle with a Briz-KM upper stage carrying the satellites in interests of Russian Ministry of Defence was delivered to the launch pad 133/3.
« Last Edit: 12/19/2013 10:20 AM by Artyom. »
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Offline Nicolas PILLET

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Offline ostangen

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Re: Rokot/Briz-KM with Rodnik satellites - December 25, 2013
« Reply #3 on: 12/21/2013 05:56 AM »
Maybe NOTAM for this launch?

V8239/13 - TEMPO DANGER AREA ACT WI CIRCLE WITH 50KM RADIUS CENTRED ON 7424N 05307E. SFC - UNL, DAILY 0020-0120, 25 DEC 00:20 2013 UNTIL 26 DEC 01:20 2013. CREATED: 21 DEC 06:54 2013

V8238/13 - DANGER AREA ULD2 ACT. SFC - UNL, DAILY 0020-0120, 25 DEC 00:20 2013 UNTIL 26 DEC 01:20 2013. CREATED: 21 DEC 06:47 2013
« Last Edit: 12/21/2013 06:03 AM by ostangen »

Offline Galactic Penguin SST

Maybe NOTAM for this launch?

V8239/13 - TEMPO DANGER AREA ACT WI CIRCLE WITH 50KM RADIUS CENTRED ON 7424N 05307E. SFC - UNL, DAILY 0020-0120, 25 DEC 00:20 2013 UNTIL 26 DEC 01:20 2013. CREATED: 21 DEC 06:54 2013

V8238/13 - DANGER AREA ULD2 ACT. SFC - UNL, DAILY 0020-0120, 25 DEC 00:20 2013 UNTIL 26 DEC 01:20 2013. CREATED: 21 DEC 06:47 2013

Seems so - that shows an approximate launch time of ~00:40 UTC on December 25.
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Offline input~2

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Re: Rokot/Briz-KM with Rodnik satellites - December 25, 2013
« Reply #5 on: 12/21/2013 04:52 PM »
that shows an approximate launch time of ~00:40 UTC on December 25.
More like 00:45 UTC as per January 2013 launch
« Last Edit: 12/21/2013 05:06 PM by input~2 »

Offline input~2

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Re: Rokot/Briz-KM with Rodnik satellites - December 25, 2013
« Reply #6 on: 12/21/2013 05:01 PM »
and NOTAM for what could be 2nd stage debris
Quote
P7174/13 -  TEMPO DANGER AREA ACT WI CIRCLE WITH 50KM RADIUS CENTRED AT 7816N 16355E. SFC - UNL, DAILY 0020-0120, 25 DEC 00:20 2013 UNTIL 26 DEC 01:20 2013. CREATED: 21 DEC 07:09 2013


Online Chris Bergin

Do we have anything on the payloads for this mission?

Offline Danderman

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Offline Stan Black

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Do we have anything on the payloads for this mission?

It is another super secret military launch on a super secret rocket…

Offline Jester

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Haven't done my homework on these, but given previous launches we could assume 3 spacecraft, Strela-3M/Rodnik-S numbers 7, 8 and 9.

Stressing the could and assume part of the above line :)

Online Chris Bergin

Thanks Chaps. I'll get something put together for an article (and upload from midnight mass! That's rather naughty! ;D)

Offline Stan Black

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« Last Edit: 05/05/2014 06:47 AM by Stan Black »

Online Chris Bergin

This was supposed to have launched 15 mins ago, right?

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That's 0031 UTC.    Rough translation:  Around 0616  (0216 UTC) the three satellites will be deployed and will get
the names Kosmos-2488, 2489 and 2490.  Target orbit is 1500 km; parts of the rocket fall in the Barents and the Arctic.
« Last Edit: 12/25/2013 12:28 AM by jcm »
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.. and by my estimate the payload/Briz-KM stack should currently be coasting in approx 100 x 1500 km transfer
orbit, with circularization burn due around 0145 UTC, so 15 min from now.
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One object now cataloged - 2013-076A in a 1469 x 1508 km x 82.50 deg orbit.
So, at least roughly the right orbit - tentative mission success (perigee is a touch low but not completely out of family)
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Offline input~2

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Offline input~2

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One object now cataloged - 2013-076A in a 1469 x 1508 km x 82.50 deg orbit.
So, at least roughly the right orbit - tentative mission success (perigee is a touch low but not completely out of family)
Corresponding to epoch 0159UTC that could have been the upper unit before separation at 0216UTC

2 new objects have now been catalogued:
39484/2013-076B in 1148 x 1503 km x 82.47° at epoch 0351UTC could be Briz-KM
39485/2013-076C in 1482 x 1511 km x 82.48° at epoch 0355UTC could be one of the 3 Rodnik

Addendum#1:
39483/2013-076A in 1478 x 1509 km x 82.48° at epoch 0355UTC could be a 2nd Rodnik

Addendum#2
and finally the 3rd Rodnik
39486/2013-076D in 1480 x 1511 km x 82.49° at epoch 0747UTC
« Last Edit: 12/25/2013 10:21 AM by input~2 »

Offline owais.usmani

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« Last Edit: 12/25/2013 07:47 AM by input~2 »

Offline input~2

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One object now cataloged - 2013-076A in a 1469 x 1508 km x 82.50 deg orbit.
So, at least roughly the right orbit - tentative mission success (perigee is a touch low but not completely out of family)
Corresponding to epoch 0159UTC that could have been the upper unit before separation at 0216UTC
 

Yes although be careful:  the "epoch" of a TLE set doesn't mean that is the instant of observation - JSPOC's
orbit determination code generates a TLE set at the epoch of equator crossing on the orbit of interest, even if
the observations were later. So sometimes for GTO objects the epoch is even before launch.  You can't conclude
from an epoch of 0159 UTC that the object existed/had separated prior to 0216 UTC - they may have spotted it
any time on that orbit.
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Offline input~2

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One object now cataloged - 2013-076A in a 1469 x 1508 km x 82.50 deg orbit.
So, at least roughly the right orbit - tentative mission success (perigee is a touch low but not completely out of family)
Corresponding to epoch 0159UTC that could have been the upper unit before separation at 0216UTC
 

Yes although be careful:  the "epoch" of a TLE set doesn't mean that is the instant of observation - JSPOC's
orbit determination code generates a TLE set at the epoch of equator crossing on the orbit of interest, even if
the observations were later. So sometimes for GTO objects the epoch is even before launch.  You can't conclude
from an epoch of 0159 UTC that the object existed/had separated prior to 0216 UTC - they may have spotted it
any time on that orbit.

Thanks for that!
Let's try to verify that Object A was in the equatorial plane at the epoch of its first TLE:
Then at that time, its true anomaly (T) plus the argument of perigee (P) of its orbit should have been a multiple of 180°.
From the 1st TLE, argument of  perigee was 298.57° and mean anomaly (M) was 61.26°.
As the orbit was nearly circular, the Object's mean anomaly was close to its true anomaly (T) and
P +T ~ P + M = 359.83° close enough to 360° QED ;)

Online jcm

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One object now cataloged - 2013-076A in a 1469 x 1508 km x 82.50 deg orbit.
So, at least roughly the right orbit - tentative mission success (perigee is a touch low but not completely out of family)
Corresponding to epoch 0159UTC that could have been the upper unit before separation at 0216UTC
 

Yes although be careful:  the "epoch" of a TLE set doesn't mean that is the instant of observation - JSPOC's
orbit determination code generates a TLE set at the epoch of equator crossing on the orbit of interest, even if
the observations were later. So sometimes for GTO objects the epoch is even before launch.  You can't conclude
from an epoch of 0159 UTC that the object existed/had separated prior to 0216 UTC - they may have spotted it
any time on that orbit.

Thanks for that!
Let's try to verify that Object A was in the equatorial plane at the epoch of its first TLE:
Then at that time, its true anomaly (T) plus the argument of perigee (P) of its orbit should have been a multiple of 180°.
From the 1st TLE, argument of  perigee was 298.57° and mean anomaly (M) was 61.26°.
As the orbit was nearly circular, the Object's mean anomaly was close to its true anomaly (T) and
P +T ~ P + M = 359.83° close enough to 360° QED ;)

So it's been pointed out to me that nowadays not all TLEs satisfy this rule. It was true for the Rodniks
but not for the Soyuz-2-1V launch.  So I'll revise
my statement to say: IF you check the TLE and its epoch corresponds to an equator crossing,
THEN the TLE was made using software that enforces this and doesn't necessarily correspond to epoch
of observation.

Edit by input~2: We can reveal that I was the one who pointed out these "non equatorial" TLEs ;)
« Last Edit: 12/29/2013 10:56 AM by input~2 »
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Offline input~2

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It is now confirmed that there were 4 satellites launched by this Rockot
source: http://www.oosa.unvienna.org/pdf/reports/regdocs/ser709E.pdf

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Offline Alter Sachse

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Cosmos 2519 has engine K50-10.5 from OKB Fakel.

http://www.fakel-russia.com/images/content/o_kompanii/letnaya_istoriya/KA_s_oborudovaniem.pdf

K50-10.6 for Kosmos-2499 and Kosmos-2504.
There is a confused entry for Kosmos-2491?

http://www.fakel-russia.com/images/content/products/fakel_tkd_en_print.pdf
24.03.2014 (Moscow time) was Kosmos 2492 Glonass M54

Offline Alter Sachse

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Kosmos 2491 possibly without engine
(or are maneuvers known?)

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