PEARL-1A TLE Update.
The Doppler curve is matching object 68990
0 OBJECT L
1 68990U 26100L 26129.44008466 .00001026 00000-0 10972-3 0 9994
2 68990 97.7348 27.6099 0003865 303.3021 56.7827 14.90852487 923
Jan | PE0SAT
2 Likes
PEARL-1B TLE Update.
The Doppler curve is matching object 68980
0 OBJECT A
1 68980U 26100A 26129.44186458 .00000994 00000-0 10761-3 0 9990
2 68980 97.7401 27.6038 0005639 278.5011 81.5568 14.90413275 913
Jan | PE0SAT
2 Likes
BRO-21 TLE Update:
BRO-21
1 98311U 26127.93782498 +.00002927 +00000+0 +13428-3 0 00104
2 98311 97.4077 26.4902 0007630 182.3589 177.7612 15.21197021000700
Jan | PE0SAT
2 Likes
my 2026 wishlist items
4 Likes
We have 46 objects published by space-track.org for this launch:
0 OBJECT A
1 68980U 26100A 26130.18036897 .00001259 00000-0 13488-3 0 9998
2 68980 97.7402 28.3273 0005610 275.2727 84.7851 14.90416194 1026
0 OBJECT B
1 68981U 26100B 26130.16668980 .00050024 00000-0 50328-2 0 9998
2 68981 97.7390 28.3198 0003038 273.5963 27.5376 14.90988653 1553
0 OBJECT C
1 68982U 26100C 26130.16668980 .00050030 00000-0 50157-2 0 9996
2 68982 97.7364 28.3222 0002329 288.9279 15.6910 14.91130992 1306
0 OBJECT D
1 68983U 26100D 26130.16668980 .00050003 00000-0 49990-2 0 9990
2 68983 97.7410 28.3234 0002158 264.6865 42.6950 14.91244146 1305
0 OBJECT E
1 68984U 26100E 26130.16668980 .00050082 00000-0 50313-2 0 9999
2 68984 97.7370 28.3212 0002712 284.6670 17.8888 14.91047362 1551
0 OBJECT F
1 68985U 26100F 26130.16668980 .00050126 00000-0 49646-2 0 9996
2 68985 97.7398 28.3262 0000890 210.0388 106.4181 14.91618460 1308
0 OBJECT G
1 68986U 26100G 26130.16668980 .00048518 00000-0 47964-2 0 9990
2 68986 97.7390 28.3272 0000669 182.8710 135.6731 14.91703799 1306
0 OBJECT H
1 68987U 26100H 26130.16668980 .00050095 00000-0 49549-2 0 9995
2 68987 97.7368 28.3272 0000436 185.7989 131.9996 14.91672559 2126
0 OBJECT J
1 68988U 26100J 26130.17982947 .00000895 00000-0 97189-4 0 9997
2 68988 97.7379 28.3299 0005094 281.0317 79.0328 14.90533405 1033
0 OBJECT K
1 68989U 26100K 26130.17897829 .00001262 00000-0 13418-3 0 9993
2 68989 97.7431 28.3268 0004480 260.1002 99.9711 14.90724020 1038
0 OBJECT L
1 68990U 26100L 26129.97702161 .00000996 00000-0 10669-3 0 9993
2 68990 97.7347 28.1360 0003853 300.7939 59.2900 14.90853523 1007
0 OBJECT M
1 68991U 26100M 26130.17668866 .00000904 00000-0 96515-4 0 9995
2 68991 97.7401 28.3331 0002072 279.9853 80.1131 14.91225718 1035
0 OBJECT N
1 68992U 26100N 26130.17626060 .00001040 00000-0 10992-3 0 9992
2 68992 97.7406 28.3340 0001734 274.5887 85.5133 14.91320558 1032
0 OBJECT P
1 68993U 26100P 26130.17568009 .00001046 00000-0 11015-3 0 9994
2 68993 97.7406 28.3347 0001299 259.5531 100.5541 14.91448651 1031
0 OBJECT Q
1 68994U 26100Q 26130.17175440 .00001616 00000-0 16359-3 0 9997
2 68994 97.7364 28.3414 0002839 83.5763 276.5779 14.92319526 1039
0 OBJECT R
1 68995U 26100R 26130.16668980 .00050141 00000-0 49726-2 0 9993
2 68995 97.7395 28.3257 0001016 227.6328 87.4168 14.91566467 2234
0 OBJECT S
1 68996U 26100S 26130.16668980 .00050179 00000-0 50340-2 0 9999
2 68996 97.7389 28.3209 0002630 274.5745 29.1623 14.91103097 2226
0 OBJECT T
1 68997U 26100T 26130.17528839 .00001029 00000-0 10820-3 0 9999
2 68997 97.7400 28.3347 0000833 248.7625 111.3504 14.91534907 1035
0 OBJECT U
1 68998U 26100U 26130.16668980 .00039621 00000-0 35517-2 0 9999
2 68998 97.7005 27.1669 0017796 296.7495 28.8181 14.95524494 1302
0 OBJECT V
1 68999U 26100V 26130.16668980 .00042146 00000-0 39518-2 0 9991
2 68999 97.6949 27.2980 0009440 334.8395 347.5936 14.93822340 1304
0 OBJECT W
1 69000U 26100W 26130.16668980 .00041954 00000-0 41538-2 0 9996
2 69000 97.6953 27.2708 0002668 139.9837 172.8227 14.91686163 1302
0 OBJECT X
1 69001U 26100X 26130.16668980 .00040741 00000-0 40857-2 0 9993
2 69001 97.6934 27.3323 0001209 102.3260 203.3442 14.91183270 1300
0 OBJECT Y
1 69002U 26100Y 26130.16668980 .00039812 00000-0 34886-2 0 9996
2 69002 97.7016 27.1896 0016538 92.7237 242.5447 14.96429330 1308
0 OBJECT Z
1 69003U 26100Z 26130.16668980 .00041926 00000-0 41220-2 0 9996
2 69003 97.6954 27.2998 0005724 309.9542 1.2878 14.91958893 1304
0 OBJECT AA
1 69004U 26100AA 26130.16668980 .00059591 00000-0 27541-2 0 9994
2 69004 97.4083 28.6707 0005685 131.5495 155.9839 15.19932958 1524
0 OBJECT AB
1 69005U 26100AB 26130.16668980 .00059389 00000-0 27343-2 0 9990
2 69005 97.4070 28.6668 0006497 137.3286 153.3181 15.20061156 1887
0 OBJECT AC
1 69006U 26100AC 26130.17940318 .00002384 00000-0 11357-3 0 9992
2 69006 97.4070 28.6800 0006309 136.9931 223.1798 15.20075871 1036
0 OBJECT AD
1 69007U 26100AD 26130.17926632 .00001711 00000-0 82359-4 0 9990
2 69007 97.4080 28.6850 0005640 138.1980 221.9687 15.20102171 1035
0 OBJECT AE
1 69008U 26100AE 26130.17682146 .00001039 00000-0 11010-3 0 9998
2 69008 97.7384 28.3329 0002143 287.1432 72.9552 14.91196974 1021
0 OBJECT AF
1 69009U 26100AF 26130.11676396 .00008155 00000-0 38805-3 0 9990
2 69009 97.4077 28.6143 0006858 107.9879 252.2104 15.19404588 1026
0 OBJECT AG
1 69010U 26100AG 26130.17854057 .00001765 00000-0 84459-4 0 9997
2 69010 97.4077 28.6826 0006136 145.5149 214.6485 15.20261152 1038
0 OBJECT AH
1 69011U 26100AH 26130.16668980 .00081488 00000-0 34737-2 0 9997
2 69011 97.7186 28.5305 0028728 183.4830 112.4571 15.22232190 2295
0 OBJECT AJ
1 69012U 26100AJ 26130.17790666 .00002557 00000-0 12045-3 0 9995
2 69012 97.4074 28.6837 0006117 150.4758 209.6824 15.20409567 1034
0 OBJECT AK
1 69013U 26100AK 26130.17808966 .00004052 00000-0 18960-3 0 9993
2 69013 97.4106 28.6889 0008408 141.9868 218.1962 15.20279296 1032
0 OBJECT AL
1 69014U 26100AL 26129.97841723 .00002660 00000-0 12346-3 0 9993
2 69014 97.4100 28.5014 0006037 173.4642 186.6673 15.20877805 1007
0 OBJECT AM
1 69015U 26100AM 26130.04345110 .00005811 00000-0 26429-3 0 9991
2 69015 97.4036 28.5481 0008740 163.6359 196.5161 15.21076015 1022
0 OBJECT AN
1 69016U 26100AN 26130.17464044 .00003192 00000-0 14633-3 0 9998
2 69016 97.4065 28.6861 0008085 170.3555 189.7837 15.21149156 1035
0 OBJECT AP
1 69017U 26100AP 26130.16668980 .00059392 00000-0 27283-2 0 9990
2 69017 97.4081 28.6730 0005741 140.8021 151.9847 15.20143197 2159
0 OBJECT AQ
1 69018U 26100AQ 26130.16668980 .00061542 00000-0 28309-2 0 9991
2 69018 97.4079 28.6725 0005794 138.6888 152.6949 15.20085028 1300
0 OBJECT AR
1 69019U 26100AR 26130.16668980 .00059916 00000-0 27460-2 0 9991
2 69019 97.4073 28.6696 0006371 144.1521 150.3996 15.20216737 1355
0 OBJECT AS
1 69020U 26100AS 26130.18247551 .00004696 00000-0 22484-3 0 9999
2 69020 97.4075 28.6789 0006077 106.9170 253.2731 15.19414312 1033
0 OBJECT AT
1 69021U 26100AT 26129.98448035 .00005340 00000-0 25452-3 0 9991
2 69021 97.4060 28.4813 0006553 112.9303 247.2624 15.19508281 1008
0 OBJECT AU
1 69022U 26100AU 26130.11589671 .00002774 00000-0 13361-3 0 9995
2 69022 97.4060 28.6103 0006701 116.3543 243.8381 15.19555911 1028
0 OBJECT AV
1 69023U 26100AV 26129.98380979 .00005362 00000-0 25447-3 0 9993
2 69023 97.4102 28.4942 0004768 114.5284 245.6448 15.19663964 1008
0 OBJECT AW
1 69024U 26100AW 26130.16668980 .00064329 00000-0 29980-2 0 9990
2 69024 97.4106 28.6693 0004798 115.7933 163.8858 15.19623054 2176
All of them are assigned so we can start identify the satellites.
5 Likes
- FrontierSat is identified as 69015 here are the ikhnos results
- Gemini-Pollux, 68998 is not a good fit but the only object near to what we observe. So, no identification yet, let’s make sure that this is the right object. I’ve set the satellite to follow this object.
4 Likes
- SELENE is identified as 69020 here are the ikhnos results
- HELIOS is identified as 69021 here are the ikhnos results
3 Likes
- Drishti: while it fits 69010, I’ll need some more observations to fully identify it, so for now let’s follow 69010 object in DB
- PEARL-1A: per @PE0SAT post above, we follow object 68990
- PEARL-1B: per @PE0SAT post above, we follow object 68980
- BRO-21: There are several candidates, we are going to follow 69002 for now, let’s get more observations
- QUBE2: 69023 and 69024 are very close, for now let’s follow 69024
3 Likes
Need more observations to confirm but here are what we are going to follow (no identification for now) for Nulink-1 and Nulink-2:
Nulink-1: 69002
Nulink-2: 68994
3 Likes
GEMINI-POLLUX RAW Telemetry.
Used OLD TLE!!! Old TLE VERY GOOD now!
GEMINI-POLLUX
1 98320U 26127.95974871 +.00001488 +00000+0 +15200-3 0 00127
2 98320 97.7359 26.1684 0002185 65.4430 294.7017 14.92081328000704
4 Frames uploaded
3 Likes
Here is an updated TLE for Gemini-Pollux based on the previous good TLE and more recent Network observations:
GEMINI-POLLUX
1 98320U 26132.32861234 .00000000 00000-0 15200-3 0 09
2 98320 97.7359 28.8928 0002185 65.4430 347.1425 14.92281318 04
5 Likes
NuLink-2 have been getting good results using 68994, but NuLink-1 has no obvious matches among the 46 objects thus far.
We are still using the TLE of 88063 from a week ago and are able to maintain contact with NuLink-1:
1 88063U 26127.89154852 +.00002157 +00000+0 +21581-3 0 0011
2 88063 97.7386 26.1005 0003363 102.6521 257.5074 14.9246567600068
3 Likes
Speaking of NuLink-1 & 2, I’ve been monitoring for the 401 MHz LoRa downlink without a single decode. None have been received by the tinyGS network, either.
Are you aware of ANY receptions of that downlink on 401 MHz? Even if weak, I was hoping it would have been spotted within a few days.
Thanks!
1 Like
I’ve removed following 69002 object and I’ve propagated this TLE set to today epoch and changed the NORAD ID to the one we use in DB, here is the result.
NuLink-1
1 98322U 26133.00000000 .00000000 00000-0 +21581-3 0 02
2 98322 97.7386 31.1205 0003363 87.9429 342.5295 14.92488300 01
3 Likes
FRONTIER TLE Update
Matching object 69015
0 OBJECT AM
1 69015U 26100AM 26134.25364045 .00005523 00000-0 25103-3 0 9994
2 69015 97.4041 32.6867 0009195 150.0840 210.0923 15.21117473 1664
Jan | PE0SAT
2 Likes
GEMINI-POLLUX TLE Update
Matching object 69000
0 OBJECT W
1 69000U 26100W 26134.19647575 .00001402 00000-0 14346-3 0 9992
2 69000 97.7357 32.2913 0001929 59.4376 300.7033 14.92097460 1638
Jan | PE0SAT
8 Likes
Hi everyone! Could I possibly get some help with an updated TLE for BusanSat? While it’s not transmitting every pass, BusanSat has a very nice downlink on S-Band (2261.950) that looks like it’s almost certainly some kind of 38k4.
But as you can see below, I lose the signal entirely during the middle of the pass since my dish pointing is so far off this long after deployment.
The I/Q file is quite large, but I’ll try to get that uploaded & will post a link.
Getting actual decodes on S-Band from the NuLink sats was a real thrill - sure would like to try again if I can manage more SNR from BusanSat. Thanks!
For OBJECT W / NORAD ID 69000, which may possibly be GEMINI-POLLUX, we noticed that the latest TLE appears inconsistent with the previous two.
0 OBJECT W
1 69000U 26100W 26134.19647575 .00001402 00000-0 14346-3 0 9992
2 69000 97.7357 32.2913 0001929 59.4376 300.7033 14.92097460 1638
1 69000U 26100W 26134.86708771 .00001320 00000-0 13541-3 0 9997 2 69000 97.7356 32.9496 0001904 58.9877 301.1528 14.92098763 1735
1 69000U 26100W 26135.25002315 .00115984 00000-0 11443-1 0 9991 2 69000 97.7030 32.5394 0004353 258.3131 329.5173 14.91361654 1301
The first two TLEs look continuous. The RAAN changes from 32.2913° to 32.9496° over about 16.1 hours, which is roughly 0.98 deg/day and seems reasonable for a near sun-synchronous orbit.
However, the latest TLE, about 9.2 hours later, shows a RAAN change in the opposite direction, a noticeable change in inclination and mean motion, and a much larger B* drag term. The revolution number also appears to decrease.
When using this latest TLE for pass prediction, we also see a large difference in Doppler shift and AOS/LOS timing compared with the previous TLEs. This makes us suspect that it may not represent the same physical object.
Could this indicate that OBJECT W / NORAD ID 69000 was re-associated with another physical object, or is it more likely a temporary short-arc fitting issue?
Has anyone seen similar behavior before?
Many thanks.
Ok, the 32-bit float I/Q file (samp rate = 375,000) from tonight’s BusanSat pass is at:
… hopefully there are some additional observations out there that can help as well. Thanks!
1 Like
Did someone get the signal from the 98313 Drishti? It’s been more than 30 passes, and no signal has been received on the waterfall.