I can confirm that QO-100 is still hanging out at its usual location 😀 My first optical satellite tracking observation. @amsat-dl.org

Apparently 18thSDS has some issues with determining the correct GP data of several objects, e.g. 68998 to 69003. The GP data shows large jumps over time. Therefore the data for Gemini-Pollux, likely CatNr 69000, is not valid most of the time. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that BRO 21 is object 69007 (2026-100AD). Frequency: 401.735 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that PEARL 1A is object 68990 (2026-100L). Frequency: 401.538 MHz. Doppler measurements show that PEARL 1B is object 68980 (2026-100A). Frequency: 401.618 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that Gemini-Pollux is object 69000 (2026-100W). Frequency: 436.500 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that QUBE2 is object 69023 (2026-100AV). Frequency: 435.600 MHz. Doppler measurements show that FrontierSat is object 69015 (2026-100AM). Frequency: 436.150 MHz. @tskelso.bsky.social @planet4589.bsky.social

Two more satellites from the Kosmos 2600 launch (2026-023) with LoRa signals: obj 67677 (2026-023D) on 430.492 MHz and obj 67681 (2026-023H) on 431.052 MHz.

Three unidentified satellites from the Kosmos 2600 launch (2026-023) illegally transmit 62.5 kHz wide LoRa signals on these UHF frequencies: obj 67679 (2026-023F) on 430.772 MHz, obj 67680 (2026-023G) on 430.912 MHz and obj 67682 (2026-023J) on 430.632 MHz.

Doppler measurements show that OrigamiSat 2 is object 68795 (2026-088D). Frequency: 437.506 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that FSI-SAT 2 is object 68792 (2026-088A). Frequency: 437.176 MHz. Doppler measurements show that WASEDA-SAT-ZERO-II is object 68797 (2026-088F). Frequency: 437.205 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that MAGNARO-II-Piscis is object 68798 (2026-088G). Frequency: 436.326 MHz. Doppler measurements show that ARICA 2 is object 68796 (2026-088E). Frequency: 436.830 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that 'Out of the box' is object 68428 (2026-067N). Frequency: 402.358 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that JACK-002 is object 68417 (2026-067B). Frequency: 436.301 MHz. Doppler measurements show that HADES-SA is object 68446 (2026-067AG). Frequency: 436.876 MHz. @tskelso.bsky.social

Doppler measurements show that ERMIS 1 is object 68468 (2026-06BE). Frequency: 401.550 MHz. Doppler measurements show that TORO 3 is object 68481 (2026-067BT). Frequency: 401.577 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that ERMIS 3 is object 68425 (2026-067K). Frequency: 401.313 MHz. Doppler measurements show that ION-SCV AA is object 68435 (2026-067V). Frequency: 401.415 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that COSMO is object 68460 (2026-067AW). Frequency: 401.200 MHz. Doppler measurements show that ERMIS 2 is object 68420 (2026-067E). Frequency: 401.251 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that OPTISAT is object 68418 (2026-067C). Frequency: 400.356 MHz. Doppler measurements show that T.MicroSat 2 is object 68433 (2026-067T). Frequency: 401.022 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that PARUS-6U1 is object 68456 (2026-067AS). Frequency: 437.196 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SAL-E is object 68458 (2026-067AU). Frequency: 436.965 MHz. Doppler measurements show that DISCO 2 is object 68431 (2026-067R). Frequency: 437.075 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that JACK-002 is object 68417 (2026-067B). Frequency: 436.301 MHz. Doppler measurements show that HADES-SA is object 68446 (2026-067AG). Frequency: 436.876 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that JACK-002 is object 68417 (2026-067B). Frequency: 436.301 MHz. Doppler measurements show that HADES-SA is object 68446 (2026-067AG). Frequency: 436.876 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that CANVAS is object 68635 (2026-074J). Frequency: 437.250 MHz. @tskelso.bsky.social @planet4589.bsky.social

The trajectory of Orion/ESM for the Artemis II mission to the Moon can be calculated using JPL's Horizons System. Select Target Body: Artemis II (spacecraft) (Integrity), or object -1024.

Ten-Koh 2 GP data (TLE) are now available in the regular SatCat under CatNr 68261.

Doppler measurements show that Ten-Koh 2 is object 88780 (2025-241B). Frequency: 435.860 MHz. Very weak signals. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that KNACKSAT 2 is object 67683 (98067XZ). Frequency: 400.630 MHz. @tskelso.bsky.social @planet4589.bsky.social

After the GP data for all Cubesats in this deployment from the ISS were swapped, new doppler measurements show that LEOPARD now is object 67687 (1998-067YD) and CoRAL now is object 67685 (1998-067YB). @tskelso.bsky.social @planet4589.bsky.social

After 18thSDS swapped the GP data for object 67684 with object 67688 data on 2026-02-07, new doppler measurements show that GXIBA 1 now is object 67684 (98067YA). See celestrak.org/NORAD/elemen... and .../CATNR=67688 Frequency: 437.300 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that LEOPARD is object 67685 (98067YB). Frequency: 400.960 MHz. Doppler measurements show that CoRAL is object 67687 (98067YD). Frequency: 401.140 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that GXIBA is object 67688 (98067YE). Frequency: 437.300 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that KOWSAR 1.5 is object 67264 (2025-313S). Frequency: 436.100 MHz, 125 kHz wide LoRa. @tskelso.bsky.social @planet4589.bsky.social

Some detailed technical information, including trajectory data, on the upcoming Artemis II mission can be found in this document: www.nasa.gov/wp-content/u... Now waiting for more ephemeris data from JPL's Horizons System. @planet4589.bsky.social

Doppler measurements show that ConnectaIoT 15 is object 67402 (2026-004AR). Frequency: 401.530 MHz. Doppler measurements show that ConnectaIoT 16 is object 67390 (2026-004AD). Frequency: 401.540 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that ConnectaIoT 13 is object 67400 (2026-004AP). Frequency: 401.510 MHz. Doppler measurements show that ConnectaIoT 14 is object 67401 (2026-004AQ). Frequency: 401.520 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that Mule 4T is object 67286 (2025-313AQ). Frequency: 436.690 MHz, 250 kHz wide LoRa. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that Lobachevsky is object 67284 (2025-313AN). Frequency: 436.320 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that Scorpion is object 67293 (2025-313AX). Frequency: 435.248 MHz. Doppler measurements show that HORS 5 is object 67283 (2025-313AM). Frequency: 435.550 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that AIST-2T 1 is object 67253 (2025-313F). Frequency: 436.090 MHz. Doppler measurements show that AIST-2T 2 is object 67254 (2025-313G). Frequency: 435.850 and 436.030 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that DCS 1 is object 67263 (2025-313R). Frequency: 401.150 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that QMR-KWT 2 is object 67291 (2025-313AV). Frequency: 436.950 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that NasbSat 1 is object 67289 (2025-313AT). Frequency: 401.500 and 401.600 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that ZORKIY-2M-5 is object 67295 (2025-313AZ). Frequency: 401.165 and 401.230 MHz. Doppler measurements show that SITRO-AIS-65 is object 67266 (2025-313U). Frequency: 401.137 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-TD-3 is object 67270 (2025-313Y). Frequency: 401.173 MHz. Note: DCS 1 is NOT object 67270, tbd. Doppler measurements show that SITRO-TD-4 is object 67265 (2025-313T). Frequency: 401.197 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that ZORKIY-2M-VPE is object 67252 (2025-313E). Frequency: 401.179 and 401.212 MHz. Doppler measurements show that NasbSat 2 is object 67285 (2025-313AP). Frequency: 401.700 and 401.800 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-AIS-64 is object 67292 (2025-313AW). Frequency: 401.122 MHz. Doppler measurements show that DCS 1 is object 67270 (2025-313Y). Frequency: 401.150 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-AIS-62 is object 67296 (2025-313BA). Frequency: 401.092 MHz. Doppler measurements show that SITRO-AIS-63 is object 67294 (2025-313AY). Frequency: 401.107 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-AIS-60 is object 67260 (2025-313N). Frequency: 401.062 MHz. Doppler measurements show that SITRO-AIS-61 is object 67297 (2025-313BB). Frequency: 401.077 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-AIS-58 is object 67258 (2025-313L). Frequency: 401.033 MHz. Doppler measurements show that SITRO-AIS-59 is object 67257 (2025-313K). Frequency: 401.048 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SITRO-AIS-57 is object 67256 (2025-313J). Frequency: 401.002 MHz. Doppler measurements show that ZORKY-2M 7 is object 67268 (2025-313W). Frequency: 401.017 MHz. @tskelso.bsky.social @planet4589.bsky.social

Doppler measurements show that SAKHACUBE-CHOLBON is object 67290 (2025-313AU). Frequency: 437.350 MHz. @tskelso.bsky.social @planet4589.bsky.social