[amsat-bb] Updated Observations on CUBESATs

[Daniel Kekez <dkekez@xxxxxxxxxxxxx>]

----- Forwarded message from Freddy Pranajaya -----

Date: Thu, 10 Jul 2003 16:56:28 -0400
From: Freddy Pranajaya 
Subject: [MOM - 07/10/2003 16:00 EST] Updated Observations

Dear All,

Below is the summary of orbital status of each objects on the MOM 
Launch.  Comments and suggestions welcome.

Good luck and happy satellite-ing!

Freddy Pranajaya
Manager, CanX and NLS Programs
University of Toronto Institute for Aerospace Studies
4925 Dufferin Street, Toronto, ON M3H-5T6, Canada
416-667-7890  Office/MCC



--------  Latest Update 07/10/2003 16:00 EST



Latest Position Estimates at 07/10/2003  16:00 EST:

Results from NORAD-CM now shows three new objects, which replaces 27846, 
27847, and 27848.  Out of the three new objects, the two have received 
temporary classifications as 85400 and 85401.  85400 and 85401 appears 
to be part of the initial 27842 "group" and dispersing slowly.  Based on 
the time that the objects penetrate the radar, it appears that the 
85400/27842/85401 group is spread over 23 km.  The objects arrangement 
is as follows, in order of overflight relative to the radar:

85400 - **NEW** small, possibly one of the NLS-1 nanosats (CanX-1?)
27842 - small, possibly one of the NLS-1 nanosats (DTUsat?)
85401 - **NEW** small, possibly one of the NLS-1 nanosats (AAUC?)
27844 - Cute-1, based on size data
27843 - MOST, based on size data
XXXXX - **UNCLASSIFIED** new piece, small, possibly XI-IV
27845 - QuakeSat, based on size data



Contact Attempt Plan for Week of 07/08/2003:
- UTIAS will continue to listen ahead of the satellite group with the 
antennas fixed to a point on the orbit path and will then track one 
object on each pass as the group rise above the horizon.  UTIAS ground 
station is now tracking one object at a time automatically, and is 
logging signals received, if any.  UTIAS is also looking into the 
possibility of using a radioastronomy dish to help track-and-pinpoint 
CanX-1.
- AALBORG is looking into equipping their ground station with higher 
gain antenna.



Latest Observation 07/10/2003:
CanX-1, DTUsat remain missing.  AAUC receives stronger signals around 
28742 on their last pass, that can be seen on the scope.



NORAD Element Set
Last Updated 07/10/2003 10:00 EST
  #      Epoch         Incl    RAAN     Ecc       AoP      MA       RPD
---------------------------------------------------------------------------
27840 3191.31891321 98.7190 198.3834 .0094177 235.1570 124.0733 14.38254742
27841 3191.08407713 96.8101 195.8419 .0379986 196.8955 161.9278 14.95484157
27842 3190.52402793 98.7254 197.3281 .0008165 261.0452  98.9798 14.20492907
27843 3190.03434298 98.7207 196.8269 .0009551 285.8774  74.1332 14.19914869
27844 3190.03363379 98.7243 196.8347 .0008560 279.6852  80.3356 14.20039519
27845 3190.10719870 98.7253 196.9050 .0008068 297.3839  62.6514 14.19517924
27846 3183.55070415 98.7282 190.4969 .0011652 334.4142  25.5477 14.20401842
27847 3183.97426148 98.7106 190.9135 .0017215 330.6038  29.4186 14.19943444
27848 3183.55198727 98.7631 190.5120 .0004812 336.7130 023.3827 14.19508099
85400 3190.24560078 98.7282 197.0554 .0008008 261.3140 115.6012 14.20487674
85401 3190.24106345 98.7276 197.0517 .0008294 261.4868  92.3923 14.20493203



NORAD Millstone Hill (NORAD-MH) Element Set
**NORAD-MH are now using the 27xxx numbers
Last Updated 07/03/2003 21:00 EST

  #      Epoch         Incl    RAAN     Ecc       AoP      MA       RPD
---------------------------------------------------------------------------
MEAN ELEMENTS:
27842 3184.90000000 98.7100 191.7210 .0003673 150.6508 265.8615 14.1983386
OSCULATING ELEMENTS:
27842 3184.90000000 98.7122 191.7160 .0001061 162.6394 252.9213 14.1983386

ECI VECTOR: (KM, M/SEC)
    X         Y         Z        XDOT      YDOT      ZDOT       EPOCH
---------------------------------------------------------------------------
-4069.698    85.052  5936.307  5953.777  1869.146  4053.975 3184.9000000




======== Past Observations



07/09/2003
18:00 EST - NORAD latest observation on the 27842 group.


07/08/2003
15:00 EST - Aalborg detects strongest transmissions by far around 27842, 
and are proceeding with upgrading their ground station

equipment.


07/07/2003
*various* - Aalborg and UTIAS continues to detect weak periodic 
transmission consistent with AAUC beacons in the vicinity of

27842/27846.  No other updates are available from the other satellites.


07/04/2003
*various* - attempts to contact CanX-1 were not successfull.  CanX-1 
team will now be concentrating on one object on each pass.

Before and after a pass, the antenna will be pointed to one location on 
the orbital track to listen for beacons.
10:00 EST - UofTokyo continues to receive strong signals from XI, 
however is unable to establish good FM downlink.


07/03/2003
15:55 EST - UTIAS observed beacons from Cute-1 at 27844 down to 0-deg, 
AOS 45-sec late, 15-sec late
12:45 EST - AALBORG obserted beacons at the AAUC frequency and period at 
27842.
09:30 EST - UTIAS observed beacons at the AAUC frequency and period at 
27842, no beacons detected at 27846.  Cute-1 detected at

27844.


07/02/2003
17:00 EST - UTIAS observed beacons at the AAUC frequency and period at 
27846.
13:30 EST - Aalborg reported more signals at AAUC frequency using 
NORAD-MH 76998, stronger than what was received in 07/01 when

using NORAD-CM 75906.
12:30 EST - QuakeFinder confirmed good success with using Russian 
Elements and that possibly QuakeSat might be 60 seconds behind.
12:00 EST - All objects are cataloged on the NASA website.  Conversation 
with NORAD-CH confirmed that some of the objects might be

duplicates.
Object Estimates as of this time/date:
27842/27846/75907 - **UNCONFIRMED** possibly duplicates of either Cute-I
or XI-IV
27843/27847/75908 - MOST; others are possibly duplicates or
**UNCONFIRMED** objects
27844/75909 - **UNCONFIRMED** possibly either Cute-I or XI-IV
27845/27848/75995 - **UNCONFIRMED** possibly QuakeSat (based on contact
observation using Russian elements), and/or part of the NLS-1 group
76996/76997/76998 - **UNCONFIRMED** possibly NLS-1 group; contacts to
these objects have not been re-established.
11:50 EST - Aalborg reported undecodable beacons at higher s/n at the 
right interval at the AAUC frequency, using 76998 from

NORAD-MH.


07/01/2003
17:30 EST - NORAD-MH unable to re-acquire w/ 76996, 76997, 76998
15:00 EST - UTIAS/Aalborg considered a new hypothesis based on the NORAD 
Millstone Hills Radar Data, as follows:
#27840 - Breeze
#27841 - MIMOSA
#75907 - QuakeSat
#75909 - Cute-I
#75908 - MOST
#76995 - XI-IV (this coincides w/ #75910 from NORAD.CM)
#76996 - DTUsat
#76997 - CanX-1
#76998 - AAUC
13:30 EST - Aalborg heard very faint beacons from AAUC Object
Estimates as of this time/date (excl. confirmed objects):
75906 - NLS-1 group
75907 - XI-IV
75908 - MOST
75909 - Cute-I
75910 - QuakeSat
10:06 EST - UTIAS confirmed CW-Beacon from Cute-I; regain contact with 
MOST using 75908 elements.
*various* - HAM operators reported repeated contacts w/ Cute-I, XI, QuakeSat


06/30/2003
*various* - QuakeFinder confirmed telemetry from QuakeSat/NLS-2; TITech 
first contact with Cute-I, confirmed deployment of

solar-paddle
UofTokyo confirmed XI-IV CW-beacon.
16:49 EST - UTIAS reported first contact with MOST
15:42 UST - First contact to MIMOSA reported
09:06 PST - QuakeFinder detected CW-Beacon from QuakeSat/NLS-2
11:49 EST - CanX-1, DTUSat, AAU Cubesat, Quakesat Separation
11:47 EST - XI-IV, Cute-I Separation
11:46 EST - MOST Separation
19:02 UTC - MIMOSA Separation
14:15:25.395 UTC - Lift-off of Rockot-MOM from Plesetsk Cosmodrome, Russia


========

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