Jielong-3 - CAMSAT CAS-5A - 2022-12-09 06:35 UTC

Satellites & Observations Launches
#1

From CAMSAT CAS-5A amateur radio satellite will be launched at UTC 06:35:02 on Dec. 9 - AMSAT-BB - mailman.amsat.org

Hello,

The CAMSAT CAS-5A amateur radio satellite will be piggybacked on the Smart Dragon-3 Y1 launch vehicle and launched from the sea launch platform in the Yellow Sea at UTC 06:35:02 on December 9.

CAS-5A deployment orbital elements:

Flight Time 724.670s
Semi-major axis 6926.918Km
eccentricity 8.143e-04
Orbital inclination 97.524°
Pergee height (relative to equatorial radius) 543.140km
Apogee altitude (relative to equatorial radius) 554.422km
Longitude of the ascending node 298.491°
Perigee angle (for reference only) 188.413°
True near point angle (for reference only) 344.096°
Flat near point angle (for reference only) 344.121°
Orbital period 5737.479s
Absolute speed 7591.699m/s
Absolute speed local inclination -1.278e-02°
Geodetic longitude 119.477°
Geographic latitude 7.475°
voyage 3336.983km

The user’s manual of CAS-5A satellite will be available later.

CAMSAT is looking for the CW beacon and telemetry monitoring.

73!
Alan Kung, BA1DU

The satellite is in DB with its transmitters and 99243 temporary NORAD ID. We need to generate or find preliminary TLE set for starting scheduling in Network.

EDIT: adding the manual file for CAS-5A:
CAS-5A Amateur Radio Satellite User’s Manual V1.0.pdf (1.7 MB)

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Observation 6855271: CAS-5A (99242)
#2

By @cgbsat preliminary TLE:

CAS-5A
1 99242U          22343.27432870  .00000000  00000-0  50000-4 0    05
2 99242  97.5240 115.0000 0008144 298.4910 180.0000 15.05889414    06
#3

Updated TLE set based on the latest observations:

CAS-5A
1 99242U          22343.27432870  .00000000  00000-0  50000-4 0    05
2 99242  97.5240 118.1839 0008144 298.4910 189.5945 15.05889414    02

image
image871×699 16.1 KB

Based on SatNOGS Network - Observation 6854183

3 Likes
#4

From Twitter: https://twitter.com/bd5rv/status/1601074805201330180
Beacon frequencys:

image
image1529×414 83.4 KB

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#5

SatPC32 configuration by 2M0SQL:

CAS-5A,435540,145820,USB,LSB,REV,0,0,V/U Linear Transponder
CAS-5A,435600,145925,FM,FM,NOR,0,0,V/U FM Transponder
CAS-5A,21435,435505,LSB,USB,NOR,0,0,H/U Linear Transponder
CAS-5A,435570,CW,CW,NOR,0,0,CW Beacon
CAS-5A,435650,USB,USB,NOR,0,0,Telem Beacon
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#6

New TLE set based on latest observations:

CAS-5A
1 99242U          22343.27432870  .00000000  00000-0  50000-4 0    05
2 99242  97.5240 117.9936 0008144 298.4910 190.5494 15.05889414    08
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#7

TBA TLE from space-track.org

0 TBA - TO BE ASSIGNED
1 54682U 22167A   22343.39869083 -.00000063  00000-0  00000+0 0  9992
2 54682  97.5461 118.4205 0013131 254.7121 186.9755 15.08519392    16
0 TBA - TO BE ASSIGNED
1 54683U 22167B   22343.46192316 -.00000159  00000-0  00000+0 0  9995
2 54683  97.5859 118.4849 0205356 325.3861 121.1569 15.40435737    09
0 TBA - TO BE ASSIGNED
1 54684U 22167C   22343.46562376 -.00000060  00000-0  00000+0 0  9994
2 54684  97.5323 118.5192 0007384 359.3364  85.5820 15.04656349    23
0 TBA - TO BE ASSIGNED
1 54685U 22167D   22343.39794954 -.00000063  00000-0  00000+0 0  9999
2 54685  97.5418 118.3963 0012430 281.1429 156.7926 15.09337304    14
0 TBA - TO BE ASSIGNED
1 54686U 22167E   22343.39788369 -.00000064  00000-0  00000+0 0  9994
2 54686  97.5463 118.3983 0012804 280.6982 156.8867 15.09342119    15
0 TBA - TO BE ASSIGNED
1 54687U 22167F   22343.39801956 -.00000063  00000-0  00000+0 0  9992
2 54687  97.5395 118.4035 0012791 278.3231 160.0249 15.09372279    16
0 TBA - TO BE ASSIGNED
1 54688U 22167G   22343.39797138 -.00000064  00000-0  00000+0 0  9990
2 54688  97.5366 118.3908 0013624 282.5015 155.5928 15.09393340    11
0 TBA - TO BE ASSIGNED
1 54689U 22167H   22343.39806645 -.00000064  00000-0  00000+0 0  9995
2 54689  97.5435 118.4023 0013553 278.2021 160.4435 15.09456440    17
0 TBA - TO BE ASSIGNED
1 54690U 22167J   22343.39804332 -.00000064  00000-0  00000+0 0  9998
2 54690  97.5309 118.3831 0014647 280.7667 157.7833 15.09598032    19
0 TBA - TO BE ASSIGNED
1 54691U 22167K   22343.39785704 -.00000064  00000-0  00000+0 0  9990
2 54691  97.5428 118.3927 0013421 277.7637 159.8170 15.09611916    14
0 TBA - TO BE ASSIGNED
1 54692U 22167L   22343.39775265 -.00000064  00000-0  00000+0 0  9992
2 54692  97.5327 118.3959 0015074 283.8495 153.1988 15.09731595    14

After a quick analysis, none of the objects fit perfectly, however the closest fits are OBJECT A and OBJECT D. For DB and Network we are going to use OBJECT D(54685) for now.

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#8

With latest more accurate measurements by @cgbsat we ended up that OBJECT A(54682) is better fit for now:

NORAD ID Fit Frequency
54682 0.108kHz 435.570893MHz
54685 0.445kHz 435.571471MHz
54686 0.449kHz 435.571475MHz
54687 0.474kHz 435.571501MHz
54688 0.492kHz 435.571519MHz
54689 0.533kHz 435.571562MHz
54690 0.613kHz 435.571648MHz
54691 0.642kHz 435.571679MHz
54692 0.719kHz 435.571757MHz

Based on SatNOGS Network - Observation 6854598

#10

An update on the TLE we currently follow, based on https://twitter.com/HAMSATNL/status/1601597036809228288 and on ikhnos results by @PE0SAT we’ve changed to follow OBJECT C(54684).

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#11

Anyone know if ID 54684 is and will be the correct one?

#12

For now 54684 is the best fit, however we can not identify it as the objects are still in TBA (to be assigned) status. In this status they may be swapped, change or more TLE sets added.

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#13

With the space-track.org TLE assigned, we have identified CAS-5A as OBJECT C(54684).

Here are some evidence using ikhnos: Ikhnos Identification of CAS-5A : SatNOGS Community : Free Download, Borrow, and Streaming : Internet Archive