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Cometas del 27 de Abril - C/2025 F2, 29P. Saludos. ( Como es habitual, los datos del formato visual van en el fichero TXT adjunto ). ( Camposagrado, León, 42? 45' N, 5? 44' W, alt. 1170 m; 5 ?C; SQM zenital 21.1 ). Corta sesión tras el crepúsculo vespertino. C/2025 F2 (SWAN) : Abr. 27.86 UT: m1=8.4, Dia.=2.5', GC=2/, 20 cm SCT (77x): Observación realizada a baja altura ( 7? ) sobre el horizonte, con un cielo muy limpio en el crepúsculo astronómico vespertino. Una imagen previa interesante es la del día 25 de Lars Backstrom, mostrando la falta de condensación frontal en el proceso de desintegración : https://spaceweathergallery2.com/indiv_upload.php?upload_id=222308 Mi intención era seguir al cometa hasta el perihelio ( 1 de Mayo, q = 0.33 UA ), pero las previsiones meteorológicas no son favorables. 29P/Schwassmann-Wachmann: Abr. 27.89 TU : m1=11.2, Dia.=7', GC=0/, 20 cm SCT (77x). Muy amplia y difusa coma externa, remanente de los outbursts previos. Salud, suerte y buenos cielos, J. J. González Suárez -------------------------------------------------------------------------------------------------------------------

COD J38 COM F. Garcia COM F. Garcia OBS F. Garcia MEA F. Garcia TEL TEL 0.25-m f/8.1 Ritchey-Chretien + CCD AC2 AC2 faustino@... ACK J38_2025_05_04-1 NET Gaia DR2 CK21G020 C2025 04 30.01831 15 24 22.39 -07 56 32.8 14.9 N J38 CK21G020 C2025 04 30.02144 15 24 22.34 -07 56 31.0 14.9 N J38 CK21G020 C2025 04 30.02352 15 24 22.33 -07 56 29.4 14.9 N J38 COD J38 OBS F. Garcia CATALOGO: Gaia DR2 - BANDA: G 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD COMETA UTC +/- +/- +/- +/- +/- +/- N FWHM CAT ------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- --- C/2021 G2 30/04/2025 00:30:07 14.95 14.20 13.85 13.63 13.49 13.39 31.0 20.0 J38 C/2021 G2 30/04/2025 00:30:07* 0.02 0.02 0.03 0.04 0.04 0.04 6 6.2 Gai AFRHO LOG COMETA UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS ------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- --- C/2021 G2 30/04/2025 00:30:07 4.31 5.29 6.39 15.27 31 3923 127 3.594 J38 FoCAs 3.70 www.astrosurf.com/cometas-obs es.groups.yahoo.com/group/Cometas_Obs Faustino Garcia MPC J38 La Bara, Valdes

COD J51 OBS J. Henriquez MEA J. Henriquez TEL 0.2-m f/9.0 Cassegrain + CMO ACK MPCReport file updated 2025.05.04 02:29:49 AC2 jahensan@... NET Gaia DR 3 (Vega) CK24L050 KB2025 05 03.97432 11 55 42.01 -15 49 46.1 16.1 G J51 CK24L050 KB2025 05 03.98006 11 55 41.31 -15 49 39.5 15.9 G J51 CK24L050 KB2025 05 03.98561 11 55 40.63 -15 49 33.0 16.1 G J51 00887 KB2025 05 03.94689 11 30 17.53 +21 08 01.9 16.4 G J51 00887 KB2025 05 03.95252 11 30 17.86 +21 07 56.2 16.2 G J51 00887 KB2025 05 03.95745 11 30 18.15 +21 07 51.2 16.2 G J51 05332 KB2025 05 03.88639 10 08 44.13 +34 02 57.6 17.3 G J51 05332 KB2025 05 03.89340 10 08 44.95 +34 02 53.9 17.5 G J51 05332 KB2025 05 03.90042 10 08 45.77 +34 02 49.9 17.4 G J51 09058 KB2025 05 03.99609 12 38 31.18 -00 41 27.7 15.1 G J51 09058 KB2025 05 04.00006 12 38 32.89 -00 41 07.4 15.1 G J51 09058 KB2025 05 04.00435 12 38 34.73 -00 40 45.4 15.0 G J51 09366 KB2025 05 04.02186 14 14 36.66 -00 56 48.3 17.0 G J51 09366 KB2025 05 04.02769 14 14 36.28 -00 56 47.4 16.9 G J51 09366 KB2025 05 04.03352 14 14 35.91 -00 56 46.5 17.0 G J51 73646 KB2025 05 04.02186 14 14 39.00 -00 43 26.9 17.7 G J51 73646 KB2025 05 04.02769 14 14 38.65 -00 43 27.6 17.6 G J51 73646 KB2025 05 04.03352 14 14 38.29 -00 43 28.3 17.7 G J51 D7170 KB2025 05 04.04274 14 38 57.35 +65 38 48.6 15.4 G J51 D7170 KB2025 05 04.04738 14 38 55.81 +65 38 45.5 15.6 G J51 D7170 KB2025 05 04.05238 14 38 54.15 +65 38 42.5 15.7 G J51 E3678 KB2025 05 03.86227 09 54 09.38 +00 49 51.8 17.5 G J51 E3678 KB2025 05 03.86582 09 54 09.92 +00 49 43.6 17.3 G J51 E3678 KB2025 05 03.86988 09 54 10.67 +00 49 35.1 17.4 G J51

Buenos días, Una noche muy buena mientras duró... COD J51 OBS J. Henriquez MEA J. Henriquez TEL 0.2-m f/9.0 Cassegrain + CMO ACK MPCReport file updated 2025.05.01 03:51:24 AC2 jahensan@... NET Gaia DR 3 (Vega) CK23H050 KB2025 04 30.93105 10 45 36.63 +65 50 21.6 16.6 G J51 CK23H050 KB2025 04 30.93630 10 45 36.34 +65 50 21.6 16.7 G J51 CK23H050 KB2025 04 30.94258 10 45 36.04 +65 50 22.0 16.8 G J51 CK23Q010 KB2025 04 30.87730 08 49 46.35 +46 27 10.0 18.0 G J51 CK23Q010 KB2025 04 30.88098 08 49 46.69 +46 27 05.7 18.0 G J51 CK23Q010 KB2025 04 30.88466 08 49 46.98 +46 27 02.6 18.0 G J51 CK24L050 KB2025 04 30.97289 12 01 46.14 -16 50 11.9 16.9 G J51 CK24L050 KB2025 04 30.97747 12 01 45.50 -16 50 06.8 16.8 G J51 CK24L050 KB2025 04 30.98167 12 01 45.03 -16 50 01.6 16.2 G J51 00887 KB2025 04 30.95265 11 27 17.47 +21 58 16.6 16.2 G J51 00887 KB2025 04 30.95759 11 27 17.74 +21 58 11.5 16.1 G J51 00887 KB2025 04 30.96324 11 27 18.07 +21 58 05.7 16.2 G J51 04954 KB2025 04 30.85529 08 48 44.02 +24 20 24.8 16.3 G J51 04954 KB2025 04 30.86093 08 48 44.61 +24 20 19.1 16.4 G J51 04954 KB2025 04 30.86656 08 48 45.21 +24 20 13.4 16.4 G J51 09058 KB2025 05 01.00031 12 13 40.09 -05 24 10.4 15.0 G J51 09058 KB2025 05 01.00400 12 13 41.99 -05 23 47.4 15.0 G J51 09058 KB2025 05 01.00769 12 13 43.91 -05 23 24.3 15.0 G J51 26760 KB2025 05 01.04705 13 33 56.89 +10 24 09.5 17.5 G J51 26760 KB2025 05 01.05405 13 33 56.46 +10 24 13.4 17.5 G J51 26760 KB2025 05 01.06105 13 33 56.03 +10 24 17.2 17.7 G J51 85709 KB2025 04 30.89507 09 31 16.07 +34 44 33.0 16.6 G J51 85709 KB2025 04 30.90008 09 31 17.26 +34 44 47.5 16.6 G J51 85709 KB2025 04 30.90506 09 31 18.45 +34 45 01.7 16.6 G J51 D7170 KB2025 05 01.08625 14 55 22.11 +66 03 43.2 15.3 G J51 D7170 KB2025 05 01.09078 14 55 20.45 +66 03 41.4 15.2 G J51 D7170 KB2025 05 01.09495 14 55 18.91 +66 03 39.8 15.3 G J51 E3678 KB2025 04 30.91190 09 45 26.98 +02 42 46.0 17.2 G J51 E3678 KB2025 04 30.91439 09 45 27.42 +02 42 40.3 17.2 G J51 E3678 KB2025 04 30.91688 09 45 27.85 +02 42 34.5 17.1 G J51 F4555 KB2025 05 01.01537 12 35 35.45 +55 09 25.2 17.4 G J51 F4555 KB2025 05 01.02499 12 35 30.83 +55 09 15.1 17.3 G J51 F4555 KB2025 05 01.03468 12 35 26.13 +55 09 04.7 17.1 G J51 h6030 KB2025 05 01.07236 14 40 11.39 +54 53 10.2 16.9 G J51 h6030 KB2025 05 01.07611 14 40 08.87 +54 52 42.3 16.8 G J51 h6030 KB2025 05 01.07985 14 40 06.31 +54 52 14.8 16.7 G J51 Tengo que ponerme con Tycho, lo sé. Saludos Juan Antonio Henríquez Obs.Atlante MPC - J51

medidas de la pasada noche sin filtro mg Gaia Saludos cordiales Faustino. elobservatoriu.blogspot.com

COD J38 COM F. Garcia COM F. Garcia OBS F. Garcia MEA F. Garcia TEL TEL 0.25-m f/8.1 Ritchey-Chretien + CCD AC2 AC2 faustino@... ACK J38_2025_04_30-1 NET Gaia DR2 0029P C2025 04 29.99597 09 36 10.49 +10 48 13.4 16.7 N J38 0029P C2025 04 29.99701 09 36 10.52 +10 48 13.3 16.7 N J38 0029P C2025 04 29.99806 09 36 10.52 +10 48 13.7 16.7 N J38 COD J38 OBS F. Garcia CATALOGO: Gaia DR2 - BANDA: G 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD COMETA UTC +/- +/- +/- +/- +/- +/- N FWHM CAT ------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- --- 29P 29/04/2025 23:53:27 16.68 15.84 15.37 15.01 14.72 14.47 6.0 19.5 J38 29P 29/04/2025 23:53:27* 0.04 0.04 0.04 0.03 0.03 0.04 6 6.5 Gai AFRHO LOG COMETA UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS ------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- --- 29P 29/04/2025 23:53:27 5.97 6.27 4.62 17.64 6 1187 198 3.075 J38 FoCAs 3.70 www.astrosurf.com/cometas-obs es.groups.yahoo.com/group/Cometas_Obs Faustino Garcia MPC J38 La Bara, Valdes

COD J51 OBS J. Henriquez MEA J. Henriquez TEL 0.2-m f/9.0 Cassegrain + CMO ACK MPCReport file updated 2025.04.28 01:01:28 AC2 jahensan@... NET Gaia DR 3 (Vega) CK23H050 KB2025 04 27.89716 10 48 17.01 +65 47 46.1 17.1 G J51 CK23H050 KB2025 04 27.90696 10 48 16.41 +65 47 43.7 17.3 G J51 CK23H050 KB2025 04 27.91588 10 48 15.68 +65 47 45.5 16.1 G J51 04034 KB2025 04 27.95994 16 20 35.47 +38 15 38.0 17.2 G J51 04034 KB2025 04 27.97049 16 20 31.22 +38 15 25.5 17.1 G J51 04034 KB2025 04 27.98038 16 20 27.27 +38 15 13.4 17.1 G J51 09058 KB2025 04 27.86581 11 42 31.93 -11 20 17.8 14.7 G J51 09058 KB2025 04 27.87418 11 42 37.15 -11 19 16.6 14.7 G J51 09058 KB2025 04 27.88131 11 42 41.61 -11 18 24.9 14.7 G J51

COD J01 COM J. Gonzalez OBS J. Gonzalez MEA J. Gonzalez TEL 0.20-m f/6 Ritchey-Chretien + CCD AC2 juanjo@... ACK J01_2025_04_27-1 NET Gaia DR2 CK21G020 C2025 04 26.97869 15 25 34.82 -08 21 44.6 15.0 N J01 CK21G020 C2025 04 27.01174 15 25 34.00 -08 21 29.1 15.0 N J01 CK21G020 C2025 04 27.02644 15 25 33.63 -08 21 20.3 15.1 N J01 CK23A030 C2025 04 27.05788 20 16 58.48 +23 14 45.0 15.6 N J01 CK23A030 C2025 04 27.06155 20 16 58.31 +23 14 48.0 15.8 N J01 CK23A030 C2025 04 27.06524 20 16 58.20 +23 14 50.7 15.8 N J01 0029P C2025 04 26.89013 09 35 56.98 +10 49 38.3 16.7 N J01 0029P C2025 04 26.90115 09 35 56.98 +10 49 37.9 16.6 N J01 0029P C2025 04 26.91587 09 35 57.05 +10 49 37.4 16.7 N J01 COD J01 OBS J. Gonzalez CATALOGO: Gaia DR2 - BANDA: G 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD COMETA UTC +/- +/- +/- +/- +/- +/- N FWHM CAT ------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- --- 29P 26/04/2025 21:39:25 16.67 15.85 15.41 15.03 14.73 14.47 6.9 19.8 J01 29P 26/04/2025 21:39:25* 0.05 0.04 0.09 0.09 0.08 0.08 3 5.2 Gai C/2021 G2 27/04/2025 00:14:15 15.01 14.20 13.84 13.62 13.48 13.38 20.1 19.7 J01 C/2021 G2 27/04/2025 00:14:15* 0.02 0.03 0.04 0.05 0.05 0.06 4 5.5 Gai C/2023 A3 27/04/2025 01:28:38 15.75 14.92 14.54 14.23 13.97 13.75 7.3 19.3 J01 C/2023 A3 27/04/2025 01:28:38* 0.07 0.11 0.09 0.10 0.09 0.08 3 5.3 Gai AFRHO LOG COMETA UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS ------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- --- 29P 26/04/2025 21:39:25 5.92 6.27 4.66 17.62 7 1183 171 3.073 J01 C/2021 G2 27/04/2025 00:14:15 4.32 5.28 6.39 15.33 20 3704 184 3.569 J01 C/2023 A3 27/04/2025 01:28:38 3.50 3.55 7.88 15.99 7 596 82 2.775 J01 FoCAs 3.70 www.astrosurf.com/cometas-obs es.groups.yahoo.com/group/Cometas_Obs

COD Z55 COM Rafael G. Farfan, Ecija 41400, (Sevilla, Spain) COM Uraniborg Observatory OBS R. Farfan MEA R. Farfan TEL 0.28-m f/6.3 Schmidt-Cassegrain + CCD AC2 uraniborg16@... ACK Z55_2025_04_26-1 NET Gaia DR2 0029P C2025 04 26.83857 09 35 56.90 +10 49 38.8 16.5 N Z55 0029P C2025 04 26.84005 09 35 56.85 +10 49 39.3 16.6 N Z55 0029P C2025 04 26.84152 09 35 56.80 +10 49 39.6 16.6 N Z55 0029P C2025 04 26.84300 09 35 56.88 +10 49 39.7 16.5 N Z55 COD Z55 OBS R. Farfan CATALOGO: Gaia DR2 - BANDA: G 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD COMETA UTC +/- +/- +/- +/- +/- +/- N FWHM CAT ------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- --- 29P 26/04/2025 20:10:43 16.56 15.76 15.23 14.84 14.53 14.26 6.3 17.9 Z55 29P 26/04/2025 20:10:43* 0.06 0.03 0.07 0.07 0.08 0.08 4 5.0 Gai AFRHO LOG COMETA UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS ------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- --- 29P 26/04/2025 20:10:43 5.92 6.27 4.66 17.59 6 1226 195 3.088 Z55 FoCAs 3.70 www.astrosurf.com/cometas-obs es.groups.yahoo.com/group/Cometas_Obs U R A N I B O R G Rafael G. Farfn 37 32' N 05 05' W

Medidas de hoy en Gaia Saludos cordiales Faustino. elobservatoriu.blogspot.com

COD J38 COM F. Garcia COM F. Garcia OBS F. Garcia MEA F. Garcia TEL TEL 0.25-m f/8.1 Ritchey-Chretien + CCD AC2 AC2 faustino@... ACK J38_2025_04_23-1 NET Gaia DR2 0029P C2025 04 23.87509 09 35 49.53 +10 50 33.6 16.6 N J38 0029P C2025 04 23.87822 09 35 49.54 +10 50 33.7 16.6 N J38 0029P C2025 04 23.87926 09 35 49.54 +10 50 33.7 16.7 N J38 COD J38 OBS F. Garcia CATALOGO: Gaia DR2 - BANDA: G 10x10 20x20 30x30 40x40 50x50 60x60 RSR FC COD COMETA UTC +/- +/- +/- +/- +/- +/- N FWHM CAT ------------ ------------------- ----- ----- ----- ----- ----- ----- ---- ---- --- 29P 23/04/2025 20:59:29 16.64 15.85 15.40 15.04 14.73 14.48 9.6 19.8 J38 29P 23/04/2025 20:59:29* 0.03 0.02 0.04 0.05 0.06 0.06 7 6.0 Gai AFRHO LOG COMETA UTC DELTA r AP " MAG RSR CM +/- AFRHO OBS ------------ ------------------- ----- ----- ----- ----- --- ----- ---- ----- --- 29P 23/04/2025 20:59:29 5.87 6.27 4.70 17.57 10 1218 127 3.086 J38 FoCAs 3.70 www.astrosurf.com/cometas-obs es.groups.yahoo.com/group/Cometas_Obs Faustino Garcia MPC J38 La Bara, Valdes