3I/ATLAS, MPEC 2025-N22, MPEC 2025-N35, MPEC 2025-N44, MPEC 2025-N51, MPEC 2025-N89, MPEC 2025-N102, MPEC 2025-O05, MPEC 2025-O20, MPEC 2025-O40, MPEC 2025-O71, MPEC 2025-O84, MPEC 2025-O116, MPEC 2025-T133, MPEC 2025-X18, MPEC 2026-C91, MPEC 2026-D56
3I/ATLAS (C/2025 N1) / 0003I (e=6.140, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.48 TT) from Sierra Nevada Obs. (Nov. 29.22p3 & 30.18p3), Nikolaev Obs. (Dec. 25.99-01p2 & 26.06p1), TRAPPIST-North (Jan. 11.01p1), Campo Catino Austral Obs. (CAO) (Jan. 13.27p3 & 14.23p3), J. Bauer via Discovery Channel Telescope (DCT) (Jan. 14.29p2), Hidetaka Sato via iTelescope Obs. Beryl Jct. (Jan. 16.34-35p2), Kurihara Obs. (Jan. 16.56p3), San Marcello Pistoiese Obs. (Jan. 18.02-04p3 & Feb. 17.77-80p3), Starry Wanderer Obs. (Jan. 18.97p1 & Feb. 16.84-85p2), Sandlot Obs. (Jan. 22.32-33p3), program code 34 via iTelescope Obs. Moorook (Jan. 22.67-68p3 & 23.67p3), Gromme Obs. (Feb. 4.19p1, 4.92p2 & 14.88-89p3), AAAA Buenos Aires Obs. (Feb. 7.08p1 & 7.13p1), A. Pearce via Perth Obs. (Feb. 12.53p3 & 14.53p3), M. Mattiazzo via Strathalbyn Obs. (Feb. 12.55-56p3), Nazaret Obs. (Feb. 12.86-87p3, 15.92-95p3, 17.89-95p3, 18.89p1, 18.95p1 & 19.01p1), Berthelot Obs. (Feb. 12.96-99p3), Moriyama Obs. (Feb. 13.67-68p2), Dordrecht Obs. (Feb. 14.82-83p3), Montcabre Obs. (Feb. 14.88p1, 14.96p1, 15.04p1, 18.87p1, 18.92p1 & 18.97p1), Marco Micheli via Apache Point Obs. (Feb. 15.17p3), Cewanee Obs. at DSNM (Feb. 15.21-32p7), Castelmartini Obs. (Feb. 15.79-81p2, 16.80-83p3 & 17.78-81p3), A. Ivanov & team via Kuban State Univ. Obs. (Feb. 15.86-88p3), program code 0 via ATLAS TDO (Feb. 16.96-00p4 & 17.95-99p4), F.D. Romanov via the Liverpool Telescope (Feb. 17.93-94p4), Marco Micheli via Canada-France-Hawaii Telescope (Feb. 18.25-30p4), Atlante Obs. (Feb. 18.90-92p3), Marco Micheli via Cerro Paranal (Feb. 19.03p3), and program code 0 via ATLAS Mauna Loa (Feb. 19.36-38p4).
3I/ATLAS (C/2025 N1) / 0003I (e=6.140, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.48 TT) from program code 0 via Lucy Mission (2025 Sept. 15.01p1, 2025 Sept. 16.01p1 & 2025 Sept. 17.01p1), McGraw-Hill Telescope (Nov. 27.50p1, 28.51p1, 29.52p1, 30.50p1 & Dec. 1.52p1), UH/Tholen NEO Follow-Up via Univ. of Hawaii 88-inch telescope (UH88) (Nov. 27.65-66p3 & Jan. 18.59p3), San Marcello Pistoiese Obs. (Nov. 29.21-23p3 & Jan. 26.87-88p3), San Pedro Martir Obs. (Dec. 2.49-51p3, 4.53-55p3, 5.53p3 & 7.53-54p3), Wallace Obs. (Dec. 7.31-32p3 & 13.28p3), A. Aletti via Schiaparelli Obs. (Dec. 8.17-20p3 & 28.98-00p3), Banon Obs. (Dec. 9.19-22p3), Marco Micheli via Faulkes Telescope North (Dec. 9.53-54p2), YLT, NAOC (Dec. 9.88-90p4, 15.85-87p9, 16.83-87p23 & 17.83-87p9), Belesta Obs. (Dec. 14.11-14p3 & 28.98-00p3), Marco Micheli via Canada-France-Hawaii Telescope (Dec. 15.58p2), Marco Micheli via Apache Point Obs. (Dec. 20.53p2 & 22.33p3), B.T. Bolin via Gemini Obs. North (Dec. 22.50p3 & Jan. 20.41p3), Kurihara Obs. (Dec. 22.83-84p3), BAS Obs. (Dec. 27.03-04p3 & 28.02-03p3), Tycho Brahe Obs. (Dec. 29.00p2, 29.05p2, 29.09p2, 31.01p2, 31.08p2 & 31.15p2), Shasta Valley Obs. (Dec. 29.41-43p3 & 30.52-59p3), L.M. Azorin via Astrogredos Obs. (Dec. 31.01-06p3), PS Obs. (Jan. 2.92-94p3), N.V. Maigurova via Nikolaev Obs. (Jan. 3.96-97p3), Castelmartini Obs. (Jan. 7.91-93p3, 16.90-92p3, 21.87-89p3, 26.82-84p2, 26.90p1, Feb. 1.83-85p2 & 12.84-86p3), Rio Cofio Obs. (Jan. 8.12-19p3, 19.06-14p3 & 20.06-14p3), Glendora Obs. (Jan. 8.40-45p3, 12.45p1, 12.49p1, 12.54p1, 13.46p1, 13.50p1, 13.54p1, 14.32p1, 14.39p1, 14.45p1, 16.21-29p3, 19.23-30p3, 20.21-28p3, 27.24-28p3, 31.23-28p3, Feb. 5.24p1, 5.30p1, 5.35p1, 8.36-42p3 & 9.34-42p3), J.M. Perez-Redondo via Faulkes Telescope South (Jan. 8.69p3, 15.51-52p3 & 21.55-57p3), J.M. Perez-Redondo via LCO Tenerife Aqawan A#1 (Jan. 9.04-05p3 & 10.13-14p3), J.M. Perez-Redondo via Faulkes Telescope North (Jan. 9.44p3, 14.36p3 & 20.59p3), Pearce/Perth Obs. (Jan. 10.72p3, 13.63p3, 19.70-71p3, 20.70p3, 21.63-64p3, 26.68-69p3, 27.62-63p3, 28.56-57p3, 29.62-63p3, Feb. 7.53-54p3 & 11.61-62p3), Forti Obs. (Jan. 10.87-89p3, 16.89-91p3 & 26.88-89p3), Sormano2 Obs. (Jan. 10.95-96p3), TRAPPIST-North (Jan. 11.01p1, 11.11-13p2, 11.95p1, 12.06p1 & 12.17-19p2), Cewanee Obs. at DSNM (Jan. 11.29-35p5, 13.32-37p4 & Feb. 12.16-21p5), Pascoli Obs. (Jan. 11.84-87p3 & 17.82-86p3), Virgil Obs. (Jan. 11.92-93p3), Coyote Watcher Obs. (Jan. 12.29-31p3, 19.18p1, 19.28p1 & 19.37p1), Southern Utsunomiya Obs. (Jan. 12.62-63p3, 13.62-63p3, 14.61-63p3, 15.56-58p4, 17.65-66p3 & Feb. 9.47-49p4), Berthelot Obs. (Jan. 12.84-92p3 & Feb. 5.87-91p3), Montcabre Obs. (Jan. 12.92-93p3, 15.97p1, 16.05p1, 16.13p1, 26.10-15p3, 28.83p1, 28.89p1, 28.94p1, Feb. 3.99-06p3, 4.85p1, 4.94p1, 5.03p1, 5.95p1, 5.99p1, 6.03p1, 6.84-85p2, 6.93p1, 12.78-81p2 & 12.86p1), Dax Obs. (Jan. 12.94-96p3, 21.02-05p3, 22.89-91p3 & Feb. 5.02-04p3), Galhassin Robotic Telescope (Jan. 12.00p1, 13.07p1 & 13.12p1), Atlante Obs. (Jan. 13.02-04p3, 21.98-99p3, 25.99-00p3, 30.01-02p3 & Feb. 7.03-05p3), Nazaret Obs. (Jan. 13.03p1, 13.08p1, 13.12p1, Feb. 6.93p1, 6.97p1 & 7.02p1), program code 0 via ATLAS TDO (Jan. 13.06-14p8, 15.10-15p4, 16.06-10p4, 21.06-10p4, 24.05-09p4, 24.00-04p4, 26.95-99p4, 28.01-05p4, 29.94-98p4, Feb. 10.95-99p4 & 11.95-00p4), Campo Catino Austral Obs. (CAO) (Jan. 13.27p3 & 14.23p3), Nedlands Obs. (Jan. 13.66-70p3, 14.66-70p3, 15.66-70p3, 17.65-69p3, 20.66-70p3 & 21.66-70p3), Camilleri/Perth Obs. (Jan. 13.70p1, 13.75p1, 14.75-78p2, 19.70-71p2, 20.71-72p2 & 21.74-75p2), San Costantino Obs. (Jan. 13.82-84p7, 14.83-89p3 & 23.81-84p9), Starry Wanderer Obs. (Jan. 13.90-94p8, 18.97p5 & 24.86-88p6), Kourovskaya Obs. (Jan. 13.90p1, 13.94p1 & 13.99p1), Tacande Obs. (Jan. 13.93p3, 21.01p1, 21.08p1 & 21.14p1), Pradillos Ferez Obs. (Jan. 13.95p1, 13.00p1 & 14.04p1), Tarbatness Obs. (Jan. 13.98-99p3), M. Camarasa Yuste via Camarasa Obs. (Jan. 13.98-99p3, 14.00-03p3 & 21.05-08p3), West Park Obs. (Jan. 13.99-00p3), Biosphere 2 Obs. (Jan. 14.23-29p3 & 16.24-30p3), J. Bauer via Discovery Channel Telescope (DCT) (Jan. 14.29p5), E.J. Christensen via the Mt. Lemmon Survey (MLS) (Jan. 14.39p1, 28.19-20p4 & Feb. 6.22-24p4), program code 0 via ATLAS Haleakala (Jan. 14.41-44p4, 16.49-53p4, 17.48-52p4, 29.36-41p4, Feb. 4.41-44p8 & 6.40-42p4), program code 0 via ATLAS Mauna Loa (Jan. 14.43-45p4, 18.41-45p4, 20.44-51p8, 26.45-47p4 & Feb. 7.42-45p4), Moriyama Obs. (Jan. 14.60p2, 22.55-57p3 & 29.55-56p2), Fukuchiyama & Kannabe Obs. (Jan. 14.78p3 & 23.56p3), Nomad Obs. (Jan. 14.83p4), Moletai Obs. (Jan. 14.95-96p3, 15.91-92p3, 20.89-90p4, 23.87-89p4 & 25.77-78p2), ShAO Chile Station (Jan. 15.27p3), A. Hale via LCO McDonald Obs. Aqawan A#1 (Jan. 15.29p3), Hiratsuka Obs. (Jan. 15.48p2), Buchloe Obs. (Jan. 15.82p3), Sant Pere Obs. (Jan. 15.92-96p4), Stixendorf Obs. (Jan. 15.98-99p3), E.J. Christensen via the Catalina Sky Survey (CSS) (Jan. 16.30p4, 20.29p4, Feb. 5.27-28p4, 6.28-29p4 & 8.25-26p4), Llano del Hato Obs. (Jan. 16.32-34p3, 17.30p3, 18.30-31p3, 23.34-35p3, 25.28-29p3 & 26.31p3), Hirao Obs. (Jan. 16.52-55p3 & Feb. 4.48-50p3), Shima/GOTO Yatsugatake (Jan. 16.74-75p2, 17.70-71p2, 20.64-66p2 & 22.68-69p2), Dettelbach Vineyard Obs. (Jan. 16.94-97p3, 19.00p3 & 21.97-98p3), Cielo Profundo Obs. (Jan. 17.00-03p3), ROASTERR-1 (Jan. 17.03-04p3), program code 0 via PS2 (Jan. 17.38-42p4), Mattiazzo/Strathalbyn (Jan. 17.56-57p3 & 23.55-56p3), Soerth Obs. (Jan. 17.80-81p3, 18.88-89p4, 21.76-77p3 & 24.92-93p3), Olmen Obs. (Jan. 17.83-87p4, 17.97-99p3, 18.89-92p5, 20.16-17p3, 21.82-89p7, 25.84-86p4, Feb. 2.75-76p3, 2.84p1, 4.84-86p4, 4.98p1, 7.89-91p4 & 8.83-84p3), Gromme Obs. (Jan. 17.97-99p3, 18.91-93p3, 19.95-98p3, 25.81-83p3, Feb. 2.82-85p3, 4.18-19p3 & 4.92-93p3), A.R. Gibbs via the Bok Telescope (Jan. 18.39-41p4), Saji Obs. (Jan. 18.63p3), Wickede Obs. (Jan. 18.88-90p6), Brixiis Obs. (Jan. 18.88-91p3), Dordrecht Obs. (Jan. 18.91-92p3), S-Gravenwezel Obs. (Jan. 18.91-92p4), BOSZA Obs. (Jan. 18.92p3), PGC (Jan. 18.95-96p3), Artemis Obs. (Jan. 18.97-99p3 & 20.13-14p3), Koeditz Obs. (Jan. 19.01-04p3 & 21.02-04p2), Marco Micheli via Cerro Paranal (Jan. 19.12-13p2), Auger Obs. (Jan. 19.16-22p3), program code 0 via ATLAS Chile (Jan. 19.27-31p4), M. Tichy & team via KLENOT (Jan. 19.79-80p8), H. Meyerdierks via Osterholz-Scharmbeck Obs. (Jan. 19.88-92p3, 20.85-89p3, 21.89-92p3 & 22.85-88p3), program code 0 via ATLAS Sutherland (Jan. 19.93-96p6), Bredenkamp Obs. (Jan. 19.99-00p3, 20.92-93p3 & 21.98-00p3), F.D. Romanov via the Liverpool Telescope (Jan. 20.07-08p5, 28.93p3 & Feb. 8.97-98p4), Lister/LCO Cerro Tololo A (Jan. 20.14-15p5, 23.26p3 & 24.22-23p3), Freconrupt Obs. (Jan. 20.83-85p3 & Feb. 7.86-87p3), 29PREMOTE Obs. (Jan. 20.88-91p10 & 26.79-82p5), Huenfelden Obs. (Jan. 20.89-91p4), L. Buzzi via Schiaparelli Obs. (Jan. 21.03-04p3), program code 0 via PS1 (Jan. 21.35-38p3), A. Ivanov & team via Kuban State Univ. Obs. (Jan. 21.77-79p3, 27.76-79p3, 29.93-95p3, Feb. 4.79-80p3, 5.82-84p3 & 10.80-82p3), Corner Obs. (Jan. 21.85-86p3, 24.87-89p3, Feb. 4.90-93p3 & 7.77-79p3), Gisborne Obs. (Jan. 22.52-55p3 & 26.44-47p3), Mufara Widefield Telescope (Jan. 22.90-93p3), Mataro Obs. (Jan. 22.97-02p3), Lister/LCO Sutherland C (Jan. 23.90p3 & 24.88p3), Northolt Branch Obs. (Jan. 23.91-92p3 & 27.81-82p3), La Vara Obs. (Jan. 24.03-04p3 & 27.80-81p3), J.M. Perez-Redondo via LCO Tenerife Aqawan A#2 (Jan. 24.07-08p3 & 25.01-02p3), J. Tapioles via Orion Obs. (Jan. 24.85p3), Muensterschwarzach Obs. (Jan. 24.86-87p6 & Feb. 3.93-94p3), Tim Lister via LCO Tenerife B (Jan. 25.88p3), BigBang Obs. (Jan. 26.95-98p5 & Feb. 12.87-88p3), Sakai Obs. (Jan. 27.53-55p3), SUN Obs. (Jan. 28.00-02p3), Sukagawa Obs. (Feb. 5.48-49p3), SADR Obs. (Feb. 6.16-18p5), Xuyi Sta. (Feb. 7.55-58p3), Xingming Obs. #3 (Feb. 7.77-78p3), B. Lutkenhoner via Slooh.com Chile Obs. (Feb. 9.20-21p2), and A. Hale via LCO Tenerife Aqawan A#1 (Feb. 9.87p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.142, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.48 TT) from Skalnate Pleso Obs. (July 5.90-96p7, 20.83p2, 20.90-95p7, 22.86-89p4 & 23.84-87p4), Pic du Midi Obs. (July 10.96-97p2), Tien-Shan Obs. (July 12.70p3 & 18.69p3), D. Husar via IAS Remote Obs. (July 15.02-05p3), Kurihara Obs. (July 20.48-50p3), Fukuchiyama & Kannabe Obs. (July 20.49-53p3), A. Ivanov & team via Kuban State Univ. Obs. (July 23.79-83p3, 24.81-84p3, 25.79-83p3, 26.79-83p3 & 27.79-82p3), LCO Cerro Tololo Aqawan A#1 (July 24.06-07p3), Tivoli Obs. (July 24.86-88p6), ASERO (July 24.94-96p3, 25.94-96p3 & 26.93-95p10), Campo Catino Austral Obs. (CAO) (July 24.99-03p9), Cewanee Obs. at DSNM (July 25.14-29p8), Shinshiro Obs. (July 25.47-49p3 & 26.50-52p3), Hirao Obs. (July 25.49-51p3 & 26.51-53p4), Southern Utsunomiya Obs. (July 25.50-51p3), Moriyama Obs. (July 25.52-53p3), ROASTERR-1 (July 25.85p3), Starhopper Obs. (July 25.85-86p3), Makroskooppi Obs. (July 25.89-98p6), Olmen Obs. (July 25.90-93p4), Dordrecht Obs. (July 25.91p3), program code 7 via LCO Sutherland A (July 25.91-93p7), Dax Obs. (July 25.91-00p5), Dark Sky New Mexico Obs. (July 26.16-17p4), ATLAS Sutherland (July 26.83-86p4 & 27.83-86p4), Bernezzo Obs. (July 26.85-86p2), Masquefa Obs. (July 26.86-90p3), Cielo Profundo Obs. (July 26.89-91p3), Monte Viseggi Obs. (July 26.90-91p3), Nazaret Obs. (July 26.92-93p3), ATLAS TDO (July 26.94-99p4), SONEAR Wykrota-CEAMIG (July 27.01-03p3, 27.96p1, 28.01p1 & 28.05p1), Pear Tree Obs. (July 27.13-17p3), Daocheng Xingyuan Obs. (July 27.60-63p3), Atlante Obs. (July 27.87-90p3), Monte Generoso Obs. (July 27.95-96p2), SUN Obs. (July 28.04-07p3), and OARU (July 28.08-11p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.143, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.47 TT) from Mirasteilas Obs. (July 18.01-02p2), Marco Micheli via Cerro Paranal (July 18.99p2, 21.00p2 & 24.02p2), Tim Lister via LCO Cerro Tololo A (July 22.20-22p4, 23.97-99p6, 24.18-20p7 & 25.18-20p7), Piobbico Obs. (July 22.84-85p3), BAS Obs. (July 22.85-88p3), program code 2 via LCO Sutherland B (July 22.96-98p4), iTelescope Obs. Siding Spring (July 23.44-46p3 & 24.44-46p8), program code 7 via LCO Siding Spring B (July 23.53-55p7), ATLAS Sutherland (July 23.84p1 & 23.97-99p2), Kysuce Obs. (July 23.87-88p3), Kant Obs. (July 23.90-91p2), ASERO (July 23.96-97p3), Sandlot Obs. (July 24.13-15p3), Shinshiro Obs. (July 24.48-50p3), Buckthorn Obs. (July 24.49-50p3), program code 5 via LCO Siding Spring A (July 24.54-56p7), San Costantino Obs. (July 24.81-82p5), Dax Obs. (July 24.88-97p7), SONEAR Wykrota-CEAMIG (July 24.97-99p3), Star Quarry Obs. (July 25.09-11p3), ATLAS Chile (July 25.12-16p3), Saguaro Obs. (July 25.15-16p2), and Cewanee Obs. at DSNM (July 25.23-28p5).
3I/ATLAS (C/2025 N1) / 0003I (e=6.143, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.47 TT) from D. Husar via IAS Remote Obs. (July 14.97-00p3), D. Trilling & team via DECam (July 18.07-11p4 & 18.20p1), B. Lutkenhoner via Slooh.com Chile Obs. (July 18.11-14p2), Ageo Obs. (July 18.54-55p2), Arcadia Obs. (July 19.45-46p3), Berthelot Obs. (July 20.83-86p3 & 22.83-89p3), Marco Micheli via Cerro Paranal (July 21.12-13p2), Nastro Verde Obs. (July 21.81-82p2 & 22.82-84p5), BAS Obs. (July 21.84-87p3), Pujalt Obs. (July 21.86-89p6), Sormano2 Obs. (July 21.86-88p3), Stixendorf Obs. (July 21.87-88p3), Montcabre Obs. (July 21.88-96p3), Dax Obs. (July 21.90-98p6 & 22.88-02p9), San Marcello Pistoiese Obs. (July 21.91-92p3), Albox Obs. (July 21.93-97p6), ASERO (July 21.96-97p4), E. Cortes via Slooh.com Canary Islands Obs. (July 21.97-98p2, 22.99-00p2 & 23.05-06p2), Comet Hunter Obs. (July 22.08-11p3), Hirao Obs. (July 22.50-51p3), Tien-Shan Obs. (July 22.65-68p3), ROASTERR-1 (July 22.83-84p3), AZM Martinsberg (July 22.84-87p7), A. Ivanov & team via Kuban State Univ. Obs. (July 22.88-91p3), Petit Jean Mtn. South Obs. (PJMSO) (July 23.16-17p5), Shinshiro Obs. (July 23.49-50p3), and Sukagawa Obs. (July 23.50-52p2).
3I/ATLAS (C/2025 N1) / 0003I (e=6.143, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.47 TT) from MPC code 874 (July 10.12-25p108), the Zwicky Transient Facility (ZTF) (July 16.21p3, 16.28-29p2, 17.23p2 & 17.28p1), UTP Obs. (July 16.21-23p2 & 16.28p1), ASERO (July 16.91p3), Petit Jean Mtn. South Obs. (PJMSO) (July 17.18-22p5 & 21.16-18p6), Kiev Comet Station (July 17.82-84p3), Corner Obs. (July 17.92-93p4 & 18.89-92p5), D. Trilling & team via DECam (July 18.07-12p15 & 18.20-21p7), Tim Lister via Faulkes Telescope North (July 18.39-40p5), J.M. Perez-Redondo via Faulkes Telescope South (July 18.58-59p3), iTelescope Obs. Siding Spring (July 18.62-63p3), Tivoli Obs. (July 18.74-76p5 & 20.74-75p4), AB Obs. (July 18.82-84p3), Nastro Verde Obs. (July 18.82-83p2 & 19.81-83p4), Ardore Marina Obs. (July 18.84-86p3), Soerth Obs. (July 18.89-93p3), Harsona Obs. (July 18.89-90p2 & 20.86p2), San Marcello Pistoiese Obs. (July 18.89p1), Pascoli Obs. (July 18.90-93p2), Dettelbach Vineyard Obs. (July 18.90-92p4), Cielo Profundo Obs. (July 18.91-92p2), Forti Obs. (July 18.92-93p2), Mirasteilas Obs. (July 18.93-94p3), SUN Obs. (July 18.97-99p3), Tim Lister via LCO Cerro Tololo B (July 18.98-01p7), McCarthy Obs. (July 19.13-14p6), Tim Lister via LCO Cerro Tololo C (July 19.18-20p6), Shasta Valley Obs. (July 19.26p3), program code 7 via LCO Siding Spring B (July 19.53-54p5), program code 7 via LCO Sutherland A (July 19.85-87p5), GINOP-KHK (July 19.85-87p2 & 20.86p2), A. Ivanov & team via Kuban State Univ. Obs. (July 19.87-90p6 & 20.81-84p3), Kysuce Obs. (July 19.88-90p3 & 20.86-88p4), Dax Obs. (July 19.89-93p3 & 20.91-95p3), Galhassin Robotic Telescope (July 19.91-93p4), SONEAR Wykrota-CEAMIG (July 19.95-00p3), Pear Tree Obs. (July 20.10-13p3), Tim Lister via LCO Cerro Tololo A (July 20.18-20p7), Speranza Obs. (July 20.28-29p3), program code 5 via LCO Siding Spring A (July 20.61-63p7), Stixendorf Obs. (July 20.86-87p4), Masquefa Obs. (July 20.87-92p3), program code 2 via LCO Sutherland B (July 20.88-89p5), Montcabre Obs. (July 20.93-97p3), and Monte Generoso Obs. (July 20.95p2).
3I/ATLAS (C/2025 N1) / 0003I (e=6.144, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.47 TT) from Weizmann Obs. (May 21.94p1), the Zwicky Transient Facility (ZTF) (May 22.37-40p2, 27.38p1, June 4.36p1, 8.34p1, 8.40p1, 10.34p1, 14.25p1, 18.36p1, 18.44p1, 21.23p1, 27.34p1, 28.29p1, 29.30-32p2, 30.35p1, July 2.35-37p2, 4.24p1 & 6.34-40p3), Monte Viseggi Obs. (July 2.87p1 & 10.86-90p3), Arcadia Obs. (July 4.48-51p3), program code 6 via Rhozen Obs. (July 4.86-96p14), ATLAS Haleakala (July 5.26-53p117), A. Ivanov & team via Kuban State Univ. Obs. (July 11.86-90p3), Berthelot Obs. (July 13.89-95p3), D. Husar via IAS Remote Obs. (July 14.92-95p3), Hirao Obs. (July 15.49p2), Masquefa Obs. (July 15.88p1, 15.93-95p2 & 17.87-93p3), L'Ametlla de Mar Obs. (July 15.88-90p2), the Danish 1.54m Telescope (July 15.97p2), iTelescope Obs. Siding Spring (July 16.39-40p3), program code 7 via LCO Sutherland A (July 16.82-83p4), Sormano2 Obs. (July 16.87-88p2), Castellon Obs. (July 16.88-93p3), Montcabre Obs. (July 16.89-92p3 & 17.88-96p3), Forti Obs. (July 16.89-90p3), Dax Obs. (July 16.89-95p3 & 17.99-02p3), Olmen Obs. (July 16.89-96p6), Brixiis Obs. (July 16.91-96p5), ROCG (July 16.91-97p9), Belesta Obs. (July 16.92-95p6), Trevinca Skies Obs. (July 16.92-96p11), SONEAR Wykrota-CEAMIG (July 16.98-00p4), Marco Micheli via Cerro Paranal (July 17.05-06p2, 17.10-13p3 & 18.13-17p4), AMACS1 (July 17.13-14p3), Tim Lister via LCO Cerro Tololo B (July 17.17-18p4), OVTLN (July 17.19-20p3 & 17.28-29p3), Tim Lister via Faulkes Telescope South (July 17.59-61p10), Tivoli Obs. (July 17.74-76p4), Nastro Verde Obs. (July 17.81-82p2), Dettelbach Vineyard Obs. (July 17.88p2), Soerth Obs. (July 17.89-93p3), Two-Meter Twin Telescope 3 (TTT3) (July 17.95-99p4), F.D. Romanov via the Liverpool Telescope (July 17.95-96p5), Mirasteilas Obs. (July 17.99p3), Comet Hunter Obs. (July 18.07-09p3), ATLAS Chile (July 18.14-16p3), and Speranza Obs. (July 18.31-32p3 & 18.37-39p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.145, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.47 TT) from the Zwicky Transient Facility (ZTF) (July 2.35-37p2 & 4.24p1), Chante-Perdrix Obs. (July 3.90-93p3 & 14.87-90p3), SADR Obs. (July 3.99-02p5), Tim Lister via Faulkes Telescope North (July 11.44p3), SUN Obs. (July 12.03p1 & 15.00-03p3), T. Prystavski via iTelescope Chile (July 12.99p2), Virtual Telescope Project (July 13.86p2), Daocheng Xingyuan Obs. (July 14.67-74p4), D. Husar via IAS Remote Obs. (July 14.73-91p12), Tivoli Obs. (July 14.76-77p4, 15.74-76p5 & 16.74-75p5), program code 2 via LCO Sutherland B (July 14.83-84p5), Castellon Obs. (July 14.87-92p3), Soerth Obs. (July 14.87-91p4), Forti Obs. (July 14.88-89p3), Marco Micheli via Calar Alto Schmidt (July 14.92-94p3), Montcabre Obs. (July 14.92-97p3 & 15.88-96p3), Old Orchard Obs. (July 14.92-98p6), ATLAS Sutherland (July 14.92-97p3 & 15.07p2), Nazaret Obs. (July 14.94-99p4), Trevinca Skies Obs. (July 14.96-00p10), OARU (July 15.04-07p3), Marco Micheli via Cerro Paranal (July 15.06-09p3), LCO McDonald Obs. Aqawan A#1 (July 15.14p1 & 15.29p1), Pear Tree Obs. (July 15.19-20p3), Fukuchiyama & Kannabe Obs. (July 15.51-53p3), Moriyama Obs. (July 15.56-57p2), Fiammetta Obs. (July 15.85-88p3), A. Ivanov & team via Kuban State Univ. Obs. (July 15.92-94p3), Dax Obs. (July 15.93-97p3), SONEAR Wykrota-CEAMIG (July 16.07-09p4), Comet Hunter Obs. (July 16.07-09p3), and Sandlot Obs. (July 16.20p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.142, i=175.1°, q=1.357 AU, TP=2025 Oct. 29.48 TT) from S. Nazarov via Crimean Astrophysical Obs. (CrAO) (July 3.91p1, 3.97p1, 4.90p1, 4.95p1, 6.87p1, 6.92p1, 7.85p1 & 7.91p1), ATLAS Chile (July 4.96-36p145, 12.16-19p4 & 14.20-21p5), N. James via iTelescope Chile (July 7.17-18p2 & 8.17-18p2), A. Ivanov & team via Kuban State Univ. Obs. (July 10.86-89p3, 12.85-88p3 & 13.86-89p3), Virtual Telescope Project (July 11.87-88p2), Olmen Obs. (July 11.92-94p3, 13.92p1 & 13.97-98p2), Forti Obs. (July 11.93-94p3), Great Shefford Obs. (July 11.94p1 & 11.00-02p4), SUN Obs. (July 12.02-03p6), Tim Lister via Faulkes Telescope North (July 12.35-36p4), iTelescope Obs. Siding Spring (July 12.50-53p4), Nastro Verde Obs. (July 12.82-83p2 & 13.82p2), LaCaille Obs. (July 12.88-91p3), Pascoli Obs. (July 12.89-90p2), SONEAR Wykrota-CEAMIG (July 12.91-93p4 & 14.02-07p4), Dax Obs. (July 12.93p1, 12.98p1, 13.02p1 & 13.89-96p3), Sukagawa Obs. (July 13.54-56p2), Starhopper Obs. (July 13.85-88p5), Stixendorf Obs. (July 13.85-87p3), Harsona Obs. (July 13.86-87p2), BAS Obs. (July 13.86-89p3), L'Ametlla de Mar Obs. (July 13.88-90p2), Chante-Perdrix Obs. (July 13.88p3), Masquefa Obs. (July 13.88-95p3), Soerth Obs. (July 13.89-92p3), Montcabre Obs. (July 13.89-95p3), Muensterschwarzach Obs. (July 13.91-93p3), and Sandlot Obs. (July 14.20-22p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.151, i=175.1°, q=1.358 AU, TP=2025 Oct. 29.46 TT) from the Zwicky Transient Facility (ZTF) (May 22.37-40p2, 27.38p1, June 4.36p1, 8.34p1, 8.40p1, 10.34p1, 14.25p1, 18.36p1, 18.44p1 & 21.23p1), Galhassin Robotic Telescope (July 2.87-02p6), Mufara Widefield Telescope (July 2.92-96p5), Sandlot Obs. (July 4.18-19p3), VEGA Obs. (July 4.88-89p3), San Marcello Pistoiese Obs. (July 4.90-92p2 & 5.00-01p2), BAS Obs. (July 4.93-95p2), B. Lutkenhoner via Slooh.com Canary Islands Obs. (July 5.07-08p2), Comet Hunter Obs. (July 5.16-20p3), Tree Gate Farm Obs. (July 5.24-28p3), A. Ivanov & team via Kuban State Univ. Obs. (July 5.86-90p6), Krasnodar Obs. (July 5.86-90p3), AB Obs. (July 5.87-89p3), Kysuce Obs. (July 5.88-91p2), Dax Obs. (July 5.90-93p6), Jurassien-Vicques Obs. (July 5.90-93p3), ALMO Obs. (July 5.91-94p2), Makroskooppi Obs. (July 5.91-07p8), Tycho Brahe Obs. (July 5.93-94p2), and iTelescope Obs. Siding Spring (July 6.44-46p3 & 6.62-64p3).
3I/ATLAS (C/2025 N1) / 0003I (e=6.219, i=175.1°, q=1.367 AU, TP=2025 Oct. 29.33 TT) from D. Trilling & team via DECam (July 3.21-22p8 & 3.30p7), program code 25 via iTelescope Chile (July 3.35p2), Muensterschwarzach Obs. (July 3.92-95p3 & 4.90-92p2), ESTELIA Obs. (July 3.00-07p3), Pascoli Obs. (July 4.03-04p2), the Zwicky Transient Facility (ZTF) (July 4.24p1), Tim Lister via Faulkes Telescope North (July 4.37-49p5), Tarui Obs. (July 4.53-54p2), A. Ivanov & team via Kuban State Univ. Obs. (July 4.86-90p6), Forti Obs. (July 4.88-90p3), Kysuce Obs. (July 4.89-91p2), Soerth Obs. (July 4.89-91p3), Olmen Obs. (July 4.91-92p2), Buchloe Obs. (July 4.91-92p3), Bredenkamp Obs. (July 4.92-96p3), SONEAR Wykrota-CEAMIG (July 4.93-94p3), and Monte Viseggi Obs. (July 4.95-97p2).
3I/ATLAS (C/2025 N1) / 0003I from the Zwicky Transient Facility (ZTF) (July 2.35-37p2 & 4.24p1), Kottomia Obs. (July 2.85p10), GINOP-KHK (July 2.90-91p3 & 3.88-89p3), BiAnto Obs. (July 2.90-92p2), Tycho Brahe Obs. (July 2.92p1, 2.96p1 & 3.01p1), Teplice Obs. (July 2.97-99p3), program code 4 via Skygems Northern Obs. (July 2.98p2), SONEAR Wykrota-CEAMIG (July 2.99-01p3), SADR Obs. (July 3.03-06p5), program code 15 via iTelescope Chile (July 3.05-06p2), Campo dos Amarais Obs. (July 3.07-09p3), Comet Hunter Obs. (July 3.09-13p3), Tony Evans via Slooh.com Chile Obs. (July 3.11-15p2), Korea Microlensing Telescope Network CTIO (KMTNet-CTIO) (July 3.17-19p12), Shamrock Banks Obs. (July 3.20-24p3), NEOSSat (July 3.21-22p4), program code 24 via iTelescope Chile (July 3.22-23p3), Telescope Live (July 3.25-29p3), E. Cortes via Slooh.com Coonabarabran (July 3.53-56p2), program code 15 via Hirao Obs. (July 3.56-58p3), Baihuashan Obs. (July 3.69-71p2), Al-Khatim Obs. (July 3.78-81p3), A. Ivanov & team via Kuban State Univ. Obs. (July 3.87-90p6), Soerth Obs. (July 3.88-91p4), Oukaimeden Obs. (July 3.89-92p3), MARGO (July 3.90-92p3), Crni Vrh Obs. (July 3.91-93p5), Makroskooppi Obs. (July 3.91-07p12), Olmen Obs. (July 3.92-94p4), San Marcello Pistoiese Obs. (July 3.93-95p2), Skalnate Pleso Obs. (July 3.95-97p8), Loiano Obs. (July 3.95-96p4), Linhaceira Obs. (July 3.95-96p4), Virtual Telescope Project (July 3.95-96p2), Alto Turia Obs. (July 3.95-99p2 & 4.03p1), Great Shefford Obs. (July 3.99-00p2), Sormano2 Obs. (July 3.00-02p3), OARU (July 4.03-04p3), B. Lutkenhoner via Slooh.com Canary Islands Obs. (July 4.05-06p2), SUN Obs. (July 4.07-09p3), Sandlot Obs. (July 4.17-18p3), OVTLN (July 4.28-29p3 & 4.35-36p3), and Marco Micheli via Cerro Paranal (July 4.28-29p4).
3I/ATLAS (C/2025 N1) / 0003I (e=6.340, i=175.1°, q=1.383 AU, TP=2025 Oct. 29.08 TT) from ZTF (June 30.35p1 & July 2.35-37p2), Korea Microlensing Telescope Network CTIO (KMTNet-CTIO) (July 2.23-24p4), TRAPPIST (July 2.33-39p28), Farra d'Isonzo Obs. (July 2.86-87p3), A. Ivanov & team via Kuban State Univ. Obs. (July 2.86-90p6), Virtual Telescope Project (July 2.87-88p2), Nastro Verde Obs. (July 2.87-92p6), Kysuce Obs. (July 2.87-90p5), Harsona Obs. (July 2.87-89p2), Masquefa Obs. (July 2.87-89p2), Monte Viseggi Obs. (July 2.87-91p4), Sormano Obs. (July 2.88p2), Iota Scorpii Obs. (July 2.90-91p3), Jurassien-Vicques Obs. (July 2.90-91p3), NOAK Obs. (July 2.90-91p3), Montcabre Obs. (July 2.90p1, 2.95p1 & 2.99p1), AZM Martinsberg (July 2.91-93p3), EHB01 Obs. (July 2.92-93p3), Korea Microlensing Telescope Network SAAO (KMTNet-SAAO) (July 2.92-93p7), Old Orchard Obs. (July 2.93-94p4), Loiano Obs. (July 2.93-95p6), SONEAR Wykrota-CEAMIG (July 2.94-95p3), Muensterschwarzach Obs. (July 2.94-95p2), Munhoz Obs. (July 2.95-97p3), AstroCamp Nerpio (July 2.95-97p3), ATLAS Sutherland (July 2.96-01p3), Great Shefford Obs. (July 2.98-99p2), AB Obs. (July 2.98-00p3), B. Lutkenhoner via Slooh.com Canary Islands Obs. (July 2.99-00p2), Makroskooppi Obs. (July 3.00-06p6), Olmen Obs. (July 3.01-03p3), Santa Maria de Montmagastrell Obs. (July 3.01-03p3), J.D. Armstrong via LCO Cerro Tololo C (July 3.02-03p4), program code 12 via iTelescope Chile (July 3.14-15p3), LCO Cerro Tololo Aqawan A#1 (July 3.18p3), Shasta Valley Obs. (July 3.23-24p3), and Sandlot Obs. (July 3.28p2).
Orbital elements:
3I/ATLAS
Epoch 2025 May 5.0 TT = JDT 2460800.5
T 2025 Oct. 29.08148 TT Spoto
q 1.3827664 (2000.0) P Q
z -3.8621180 Peri. 127.70607 -0.96583700 -0.25388087
+/-0.4759944 Node 322.33308 -0.25638121 +0.90683621
e 6.3404071 Incl. 175.11898 -0.03778308 +0.33644105
From 272 observations 2025 June 14-July 3, mean residual 0".4.
3I/ATLAS ..
Модераторы: Ulmo, Булдаков Сергей, Gremlin
3I/ATLAS ..
Gremlin » 03 июл 2025 19:19
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