Comet 3I/ATLAS

2025 Dec. 17.43 UT m1=10.9 Tri-G Dia.=7.0' Anti-tail=11.9' in PA 105 deg... [T68] 0.28-m f/2.2 RASA astrograph + CMOS... iTelescope observatory, U94 (remotely from Great Basin Desert, Beryl Junction, Utah, USA)

Courtesy NASA/JPL-Caltech.

Light curve created using "Comet for Windows" software. Copyright(C) Seiichi Yoshida.

Other observations:
3I 2025 07 12.99 C 17.7:GG 51.0C 7a120 ICQ XX PRY01I C 0.10m A4B 5 P9* 0.7s 0.7
3I 2025 07 16.40 C 17.1:GG 32.0Y 9a180 ICQ XX PRY01I C 0.13m A4B 5 P9* 1.3s 1.3
3I 2025 07 23.45 C 17.0:GG 32.0Y 9a120 ICQ XX PRY01I C 0.15m A4B 5 P9* 0.6s 0.6
3I 2025 08 10.43 C 16.0:GG 50.8C 4a180 & 0.2 ICQ XX PRY01I C 0.25m K6F A4B 5 P9* 0.8s 0.8
3I 2025 08 13.18 C 15.7:GG 51.0С 5a 60 ICQ XX PRY01I C 0.25m A4B 5 P9 0.8s 0.8
3I 2025 08 15.41 C 15.8 GG 32.0Y 9a120 ICQ XX PRY01I C 0.26m A4B 5 P9* 0.6s 0.6
3I 2025 08 17.41 C 15.8 GG 32.0Y 9a120 ICQ XX PRY01I C 0.26m A4B 5 P9* 0.6s 0.6
3I 2025 08 21.43 C 15.2 U4 32.0Y 9a120 0.3 0.3m129 ICQ XX PRY01I C 0.30m A4B 5 P9* 0.6s 0.6
3I 2025 08 24.43 C 14.7 U4 32.0Y 9a120 0.3 0.4m100 ICQ XX PRY01I C 0.30m A4B 5 P9* 0.6s 0.6

3I 2025 09 10.02 C 13.9 U4 51.0C 7a100 1.6 1.9m104 ICQ XX PRY01I C 1.58m A4B 5 P8* 0.7s 0.7

3I 2025 11 26.52 C 10.0:U4 50.8С 3a150 & 3.5 21 m294 ICQ XX PRY01I C 3.52m A4B 5 P6* 1.0s 1.0