COM Updated 2026 Feb 14 at 01:40 UTC. Includes everything posted COM on comets-ml up to message 34905. COD 500 COM Ref. https://groups.io/g/comets-ml/message/34764, 34756 COM Posn sigma 240 COM Actually from PUNCH, but geocentric is close enough for the accuracy COM we're looking at here. I may add a (Pun) code anyway, though. MEA T. Lehmann SWAN26B C2026 01 25.33 20 26 54 -03 32 30 34764 10.3 U PUNCH500 SWAN26B C2026 01 25.89 20 28 16 -02 56 30 34764 10.5 U PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34752 SWAN26B C2026 01 23.284 20 22 22 -05 52 00 34752 10.5 U PUNCH500 SWAN26B C2026 01 23.361 20 22 37 -05 46 00 34752 PUNCH500 SWAN26B C2026 01 23.411 20 22 41 -05 43 00 34752 PUNCH500 SWAN26B C2026 01 24.723 20 25 28 -04 15 00 34752 10.5 U PUNCH500 SWAN26B C2026 01 24.778 20 25 33 -04 10 00 34752 PUNCH500 SWAN26B C2026 01 24.850 20 25 45 -04 04 30 34752 PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34794, 34795 SWAN26B C2026 01 19.034 20 14 04 -10 41 00 34794 10.9 U PUNCH500 SWAN26B C2026 01 19.167 20 14 22 -10 33 00 34794 10.8 U PUNCH500 SWAN26B C2026 01 19.434 20 14 59 -10 16 00 34794 10.6 U PUNCH500 SWAN26B C2026 01 19.684 20 15 19 -10 00 00 34795 11.0 U PUNCH500 SWAN26B C2026 01 19.756 20 15 34 -09 54 00 34794 10.7 U PUNCH500 SWAN26B C2026 01 27.623 20 32 48 -01 09 00 34794 10.4 U PUNCH500 SWAN26B C2026 01 27.917 20 33 35 -00 52 00 34794 10.8 U PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34827 SWAN26B C2026 01 20.167 20 16 13 -09 26 00 34827 10.7 V PUNCH500 SWAN26B C2026 01 20.573 20 16 56 -08 56 30 34827 10.8 V PUNCH500 SWAN26B C2026 01 20.773 20 17 27 -08 43 00 34827 10.9 V PUNCH500 SWAN26B C2026 01 20.911 20 17 40 -08 35 00 34827 10.8 V PUNCH500 SWAN26B C2026 01 27.011 20 31 12 -01 45 30 34827 10.3 V PUNCH500 SWAN26B C2026 01 27.311 20 31 57 -01 28 00 34827 10.3 V PUNCH500 SWAN26B C2026 01 28.006 20 33 57 -00 47 00 34827 10.4 V PUNCH500 SWAN26B C2026 01 28.350 20 34 54 -00 28 00 34827 10.4 V PUNCH500 SWAN26B C2026 01 28.556 20 35 27 -00 17 00 34827 10.4 V PUNCH500 SWAN26B C2026 01 28.861 20 36 22 +00 00 30 34827 10.6 V PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34853 SWAN26B C2026 01 31.145 20 44 42 +01 47 00 34853 10.7 V PUNCH500 SWAN26B C2026 01 31.339 20 45 32 +01 56 00 34853 10.7 V PUNCH500 SWAN26B C2026 01 31.645 20 46 45 +02 05 30 34853 10.9 V PUNCH500 SWAN26B C2026 01 31.923 20 48 01 +02 16 00 34853 10.8 V PUNCH500 SWAN26B C2026 02 01.150 20 49 02 +02 24 30 34853 10.8 V PUNCH500 SWAN26B C2026 02 01.528 20 50 50 +02 34 00 34853 11.0 V PUNCH500 SWAN26B C2026 02 01.911 20 52 33 +02 47 30 34853 11.2 V PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34902 SWAN26B C2026 02 02.139 20 53 43 +02 52 30 34902 11.0 V PUNCH500 SWAN26B C2026 02 02.284 20 54 26 +02 57 30 34902 11.0 V PUNCH500 SWAN26B C2026 02 02.478 20 55 29 +03 02 00 34902 11.3 V PUNCH500 SWAN26B C2026 02 02.617 20 56 12 +03 05 30 34902 11.2 V PUNCH500 SWAN26B C2026 02 02.761 20 56 58 +03 08 30 34902 11.4 V PUNCH500 COD 500 COM Posn sigma 240 COM Ref. https://groups.io/g/comets-ml/message/34777 MEA M. Kaszczyk SWAN26B C2026 01 24.72811320 25 29.6 -04 14 17 34777 PUNCH500 SWAN26B C2026 01 24.76700220 25 34.2 -04 11 27 34777 PUNCH500 SWAN26B C2026 01 24.77255820 25 34.6 -04 10 54 34777 PUNCH500 SWAN26B C2026 01 24.77811320 25 36.0 -04 10 18 34777 PUNCH500 SWAN26B C2026 01 24.78366920 25 40.0 -04 09 44 34777 PUNCH500 SWAN26B C2026 01 24.78922520 25 36.1 -04 09 28 34777 PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34880 SWAN26B C2026 02 01.222 20 49 19 +02 25 35 34880 PUNCH500 SWAN26B C2026 02 01.283 20 49 40 +02 30 36 34880 PUNCH500 SWAN26B C2026 02 01.383 20 50 03 +02 35 25 34880 PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34890 SWAN26B C2026 01 25.167 20 26 33 -03 44 14 34890 PUNCH500 SWAN26B C2026 01 25.250 20 26 41 -03 40 24 34890 PUNCH500 SWAN26B C2026 01 25.333 20 26 55 -03 34 16 34890 PUNCH500 SWAN26B C2026 01 25.583 20 27 32 -03 17 30 34890 PUNCH500 SWAN26B C2026 01 25.750 20 27 45 -03 05 53 34890 PUNCH500 SWAN26B C2026 01 25.833 20 28 05 -03 00 52 34890 PUNCH500 SWAN26B C2026 01 26.083 20 28 40 -02 44 10 34890 PUNCH500 SWAN26B C2026 01 26.167 20 28 59 -02 40 03 34890 PUNCH500 SWAN26B C2026 01 26.250 20 29 01 -02 33 33 34890 PUNCH500 SWAN26B C2026 01 26.333 20 29 14 -02 28 07 34890 PUNCH500 SWAN26B C2026 01 26.417 20 29 34 -02 23 58 34890 PUNCH500 SWAN26B C2026 01 26.500 20 29 46 -02 18 09 34890 PUNCH500 SWAN26B C2026 01 26.583 20 29 56 -02 12 53 34890 PUNCH500 SWAN26B C2026 01 26.833 20 30 35 -01 56 36 34890 PUNCH500 SWAN26B C2026 01 26.917 20 30 45 -01 52 12 34890 PUNCH500 SWAN26B C2026 01 26.994 20 31 03 -01 46 12 34890 PUNCH500 SWAN26B C2026 01 27.083 20 31 15 -01 41 23 34890 PUNCH500 SWAN26B C2026 01 27.167 20 31 34 -01 35 40 34890 PUNCH500 SWAN26B C2026 01 27.250 20 31 17 -01 15 35 34890 PUNCH500 SWAN26B C2026 01 27.333 20 31 58 -01 25 47 34890 PUNCH500 SWAN26B C2026 01 27.417 20 32 15 -01 21 43 34890 PUNCH500 SWAN26B C2026 01 27.500 20 32 27 -01 16 37 34890 PUNCH500 SWAN26B C2026 01 27.583 20 32 42 -01 10 08 34890 PUNCH500 SWAN26B C2026 01 27.916 20 33 36 -00 52 15 34890 PUNCH500 SWAN26B C2026 01 27.994 20 33 55 -00 48 09 34890 PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34895 SWAN26B C2026 01 22.000 20 19 49 -07 21 17 34895 PUNCH500 SWAN26B C2026 01 22.083 20 19 49 -07 14 57 34895 PUNCH500 SWAN26B C2026 01 22.167 20 20 06 -07 08 36 34895 PUNCH500 SWAN26B C2026 01 22.417 20 20 58 -06 38 55 34895 PUNCH500 SWAN26B C2026 01 22.667 20 21 03 -06 35 12 34895 PUNCH500 SWAN26B C2026 01 22.883 20 21 22 -06 23 52 34895 PUNCH500 SWAN26B C2026 01 22.917 20 21 35 -06 17 59 34895 PUNCH500 SWAN26B C2026 01 22.994 20 21 45 -06 11 26 34895 PUNCH500 SWAN26B C2026 01 23.128 20 22 01 -06 02 56 34895 PUNCH500 COM Ref. https://groups.io/g/comets-ml/message/34896 SWAN26B C2026 01 21.583 20 19 14 -07 48 49 34896 PUNCH500 SWAN26B C2026 01 21.667 20 19 14 -07 44 36 34896 PUNCH500 SWAN26B C2026 01 21.750 20 19 17 -07 36 53 34896 PUNCH500 SWAN26B C2026 01 21.833 20 19 23 -07 31 58 34896 PUNCH500 SWAN26B C2026 01 21.917 20 19 37 -07 27 17 34896 PUNCH500 SWAN26B C2026 01 21.994 20 19 47 -07 21 10 34896 PUNCH500 COM Posn sigma 30 COM Time sigma 0 MEA Q. Zhang COM Ref. https://groups.io/g/comets-ml/message/34785 COM These are from LASCO C3, a 0.096-m coronagraph with unknown f/ratio. # version=2017 # observatory ! mpcCode 249 # observers ! name Q. Zhang # measurers ! name Q. Zhang # telescope ! design Coronagraph ! aperture 0.096 ! fRatio 10.0 ! detector CCD trkSub |mode|stn|sys |ctr|pos1 |pos2 |pos3 |obsTime | ra |dec |rmsRA|rmsDec SWAN26B| CCD|249|ICRF_AU|399|0.007443877|-0.006424418|-0.002984691|2026-01-11T22:54:19.805Z|300.3051|-17.933 | 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.00750012 |-0.006392836|-0.002982446|2026-01-12T08:30:16.397Z|300.4804|-17.551 | 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007570641|-0.006352563|-0.00297945 |2026-01-12T20:42:16.231Z|300.6951|-17.0632| 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007635567|-0.006314822|-0.002976619|2026-01-13T08:06:16.645Z|300.8965|-16.6015| 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007695055|-0.006279577|-0.00297374 |2026-01-13T18:42:16.987Z|301.0865|-16.1711| 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007769035|-0.006234852|-0.002969908|2026-01-14T08:06:16.215Z|301.3259|-15.62 | 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007900157|-0.006152927|-0.002962363|2026-01-15T08:30:16.271Z|301.7647|-14.5917| 30|30 SWAN26B| CCD|249|ICRF_AU|399|0.007954597|-0.006117825|-0.002958922|2026-01-15T18:54:16.677Z|301.9498|-14.1439| 30|30 Here are two points from STEREO-A HI2 where it's mag ~12-13: COM Note from BJG : dunno what the f/ratio or aperture for HI2 is! COM Posn sigma 180 MEA Q. Zhang COM Ref. https://groups.io/g/comets-ml/message/34872 # version=2017 # observatory ! mpcCode C49 # observers ! name Q. Zhang # measurers ! name Q. Zhang trkSub|mode|stn| sys|ctr| pos1| pos2| pos3| obsTime| ra| dec|rmsRA|rmsDec SWAN26B| CCD|C49|ICRF_AU|399|-0.235322763|-0.748029175|-0.325226057|2026-02-05T18:58:16.0Z|21.2209|24.5232| 180| 180 SWAN26B| CCD|C49|ICRF_AU|399|-0.213117182|-0.754340796|-0.327905739|2026-02-07T06:58:16.0Z|26.6059|24.6877| 180| 180 COM Ref. https://groups.io/g/comets-ml/message/34905 # version=2017 # observatory ! mpcCode C49 # observers ! name Q. Zhang # measurers ! name Q. Zhang trkSub|mode|stn| sys|ctr| pos1| pos2| pos3| obsTime| ra| dec|rmsRA|rmsDec SWAN26B| CCD|C49|ICRF_AU|399|-0.190709221|-0.760119619|-0.330353536|2026-02-08T18:58:16.0Z|31.9126|24.5107| 180| 180 SWAN26B| CCD|C49|ICRF_AU|399|-0.168114553|-0.765359827|-0.332566913|2026-02-10T06:58:16.0Z|37.1041|24.0233| 180| 180 MEA T. Lehmann COM Ref. https://groups.io/g/comets-ml/message/34954 COM Posn sigma 20 COM Mag sigma 0.1 SWAN26B KC2026 01 21.178 20 18 12 -08 17 10 10.6 V 500 SWAN26B KC2026 01 21.511 20 18 50 -07 54 30 10.6 V 500 SWAN26B KC2026 01 21.850 20 19 30 -07 31 00 10.6 V 500 SWAN26B KC2026 01 26.150 20 28 54 -02 40 30 10.5 V 500 SWAN26B KC2026 01 26.473 20 29 42 -02 20 10 10.5 V 500 SWAN26B KC2026 01 26.823 20 30 37 -01 58 00 10.5 V 500 SWAN26B KC2026 01 29.145 20 37 25 +00 15 10 10.7 V 500 SWAN26B KC2026 01 29.473 20 38 32 +00 31 30 10.6 V 500 SWAN26B KC2026 01 29.811 20 39 41 +00 48 30 10.6 V 500 SWAN26B KC2026 01 30.217 20 41 09 +01 07 30 10.7 V 500 SWAN26B KC2026 01 30.500 20 42 11 +01 19 50 10.6 V 500 SWAN26B KC2026 01 30.817 20 43 24 +01 33 50 10.7 V 500 COM Ref. https://groups.io/g/comets-ml/message/34931 COM Posn sigma 60 COM Mag sigma 0.1 SWAN26B KC2026 02 03.156 20 59 08 +03 16 50 11.8 V 500 SWAN26B KC2026 02 03.461 21 00 53 +03 22 50 11.6 V 500 SWAN26B KC2026 02 03.817 21 02 59 +03 28 40 11.9 V 500 COM Ref. https://groups.io/g/comets-ml/message/34940 SWAN26B KC2026 02 04.184 21 05 13 +03 33 40 11.8 V 500 SWAN26B KC2026 02 04.523 21 07 24 +03 38 00 11.9 V 500 SWAN26B KC2026 02 04.856 21 09 36 +03 40 50 12.1 V 500 SWAN26B KC2026 02 05.200 21 11 57 +03 43 10 11.9 V 500 SWAN26B KC2026 02 05.500 21 14 06 +03 44 50 11.9 V 500 SWAN26B KC2026 02 05.806 21 16 19 +03 45 40 12.1 V 500 SWAN26B KC2026 02 06.134 21 18 47 +03 45 50 12.0 V 500 SWAN26B KC2026 02 06.417 21 21 01 +03 45 10 12.2 V 500 SWAN26B KC2026 02 06.811 21 24 09 +03 43 30 12.2 V 500 COM Ref. https://groups.io/g/comets-ml/message/34944 SWAN26B KC2026 02 07.167 21 27 08 +03 41 50 12.1 V 500 SWAN26B KC2026 02 07.467 21 29 44 +03 39 10 12.4 V 500 SWAN26B KC2026 02 07.828 21 32 59 +03 35 10 12.6 V 500 SWAN26B KC2026 02 08.261 21 36 59 +03 29 00 12.5 V 500 SWAN26B KC2026 02 08.728 21 41 32 +03 21 40 12.6 V 500 COD 249 CON Rob Matson, 1 Veneto, Newport Coast, CA 92657 USA CON [matsonr@...] OBS R. Matson MEA R. Matson TEL 0.027-m f/3.78 catadioptric + PMT ACK NEOCP SWAN26B AC2 matsonr@... COM Posn sigma 3600 COM Time sigma 3600 COM Ref. https://groups.io/g/comets-ml/message/34987 COM vel (km/s) 2026 01 17.930 0.1973381 0.1420981 0.0165796 249 SWAN26B S2026 01 17.930 20 11 36 -11 46 249 SWAN26B s2026 01 17.930 2 +0.00821002 -0.00594327 -0.00294005 249 COM vel (km/s) 2026 01 18.930 0.1881617 0.1424577 0.0176292 249 SWAN26B S2026 01 18.930 20 13 24 -10 34 9 249 SWAN26B s2026 01 18.930 2 +0.00832136 -0.00586108 -0.00293016 249 COM vel (km/s) 2026 01 19.916 0.1781805 0.1424231 0.0185543 249 SWAN26B S2026 01 19.916 20 15 12 -09 39 249 SWAN26B s2026 01 19.916 2 +0.00842586 -0.00577994 -0.00291986 249 COM vel (km/s) 2026 01 20.916 0.1690056 0.1419481 0.0191817 249 SWAN26B S2026 01 20.916 20 17 06 -08 43 249 SWAN26B s2026 01 20.916 2 +0.00852631 -0.00569779 -0.00290897 249 COM vel (km/s) 2026 01 21.916 0.15904867 0.1408920 0.0195963 249 SWAN26B S2026 01 21.916 20 18 06 -07 17 249 SWAN26B s2026 01 21.916 2 +0.00862105 -0.00561608 -0.00289776 249 COM vel (km/s) 2026 01 22.903 0.1491725 0.1392211 0.0197090 249 SWAN26B S2026 01 22.903 20 20 30 -06 02 249 SWAN26B s2026 01 22.903 2 +0.00870882 -0.00553628 -0.00288655 249 COM vel (km/s) 2026 01 23.889 0.1393760 0.1368715 0.0195008 249 SWAN26B S2026 01 23.889 20 23 03 -04 47 249 SWAN26B s2026 01 23.889 2 +0.00879098 -0.00545763 -0.00287537 249 COM vel (km/s) 2026 01 24.889 0.1296786 0.1337706 0.0189511 249 SWAN26B S2026 01 24.889 20 24 00 -03 53 249 SWAN26B s2026 01 24.889 2 +0.00886866 -0.00537944 -0.00286425 249 COM vel (km/s) 2026 01 25.889 0.1222820 0.1308087 0.0182797 249 SWAN26B S2026 01 25.889 20 26 48 -02 37 249 SWAN26B s2026 01 25.889 2 +0.00892625 -0.00531894 -0.00285573 249 COM vel (km/s) 2026 01 26.875 0.1117956 0.1255503 0.0169076 249 SWAN26B S2026 01 26.875 20 28 24 -01 24 249 SWAN26B s2026 01 26.875 2 +0.00900693 -0.00523046 -0.00284357 249 COM vel (km/s) 2026 01 27.875 0.1038286 0.1205115 0.0154853 249 SWAN26B S2026 01 27.875 20 32 54 -00 49 249 SWAN26B s2026 01 27.875 2 +0.00906923 -0.00515946 -0.00283433 249 COM vel (km/s) 2026 01 28.875 0.0967379 0.1150529 0.0138958 249 SWAN26B S2026 01 28.875 20 35 36 +00 11 249 SWAN26B s2026 01 28.875 2 +0.00912710 -0.00509142 -0.00282584 249 COM vel (km/s) 2026 01 29.862 0.0907099 0.1094240 0.0122587 249 SWAN26B S2026 01 29.862 20 38 24 +01 13 249 SWAN26B s2026 01 29.862 2 +0.00918043 -0.00502749 -0.00281839 249 COM vel (km/s) 2026 01 30.862 0.0856163 0.1036656 0.0106346 249 SWAN26B S2026 01 30.862 20 40 45 +01 56 249 SWAN26B s2026 01 30.862 2 +0.00923130 -0.00496596 -0.00281179 249 COM vel (km/s) 2026 01 31.862 0.0815230 0.0980623 0.0091543 249 SWAN26B S2026 01 31.862 20 45 18 +02 33 249 SWAN26B s2026 01 31.862 2 +0.00927952 -0.00490772 -0.00280608 249 COM vel (km/s) 2026 02 01.862 0.0783366 0.0928013 0.0079129 249 SWAN26B S2026 02 01.862 20 50 42 +02 56 249 SWAN26B s2026 02 01.862 2 +0.00932564 -0.00485262 -0.00280117 249 COM vel (km/s) 2026 02 02.862 0.07591129 0.0880292 0.0069815 249 SWAN26B S2026 02 02.862 20 55 18 +03 34 249 SWAN26B s2026 02 02.862 2 +0.00937015 -0.00480043 -0.00279688 249 COM vel (km/s) 2026 02 03.862 0.0740718 0.0838403 0.0064020 249 SWAN26B S2026 02 03.862 21 02 18 +03 33 249 SWAN26B s2026 02 03.862 2 +0.00941344 -0.00475083 -0.00279303 249 COM vel (km/s) 2026 02 04.862 0.0726396 0.0802762 0.0061877 249 SWAN26B S2026 02 04.862 21 09 00 +04 05 249 SWAN26B s2026 02 04.862 2 +0.00945579 -0.00470346 -0.00278942 249 COM vel (km/s) 2026 02 05.875 0.0714351 0.0772988 0.0063335 249 SWAN26B S2026 02 05.875 21 15 36 +03 47 249 SWAN26B s2026 02 05.875 2 +0.00949796 -0.00465736 -0.00278577 249 COM vel (km/s) 2026 02 09.889 0.0666838 0.0709365 0.0098949 249 SWAN26B S2026 02 09.889 21 51 54 +03 35 249 SWAN26B s2026 02 09.889 2 +0.00965835 -0.00448704 -0.00276777 249 COM vel (km/s) 2026 02 10.889 0.0650897 0.0704113 0.0113415 249 SWAN26B S2026 02 10.889 22 01 57 +02 49 249 SWAN26B s2026 02 10.889 2 +0.00969641 -0.00444624 -0.00276164 249 COM vel (km/s) 2026 02 11.903 0.0631855 0.0701846 0.0129593 249 SWAN26B S2026 02 11.903 22 17 30 +02 18 249 SWAN26B s2026 02 11.903 2 +0.00973399 -0.00440509 -0.00275453 249 COM vel (km/s) 2026 02 12.917 0.0609449 0.0701961 0.0146882 249 SWAN26B S2026 02 12.917 22 33 30 +01 53 249 SWAN26B s2026 02 12.917 2 +0.00977035 -0.00436400 -0.00274644 249 COM vel (km/s) 2026 02 13.930 0.0583302 0.0703682 0.0164830 249 SWAN26B S2026 02 13.930 22 46 12 +00 52 249 SWAN26B s2026 02 13.930 2 +0.00980529 -0.00432285 -0.00273732 249 COM vel (km/s) 2026 02 14.987 0.0553186 0.0706132 0.0182940 249 SWAN26B S2026 02 14.987 23 05 30 -00 36 249 SWAN26B s2026 02 14.987 2 +0.00983858 -0.00428157 -0.00272714 249