British Astronomical Association
Comet Section


2021 News

Jan 02  Michal Biesiada reports a Kreutz group comet in real time C3 images
Jan 05  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jan 07  Recovery of 2007 B1 (P/Christensen) as 2020 W3 reported
Jan 07  Recovery of 2010 B2 (P/WISE) as 2020 Y1 reported
Jan 07  Recovery of 2016 J3 (P/STEREO) not formally reported
Jan 08  Discovery of 2020 Y2 (ATLAS) reported
Jan 10  Discovery of 2021 A1 (Leonard) reported
Jan 10  Discovery of 2021 A2 (NEOWISE) reported
Jan 10  Discoery of 2020 X4 (Leonard) reported
Jan 11  Recovery of 2014 E1 (P/Larson) reported (as 2020 W4)
Jan 11  Worachate Boonplod reports a Meyer group comet in real time C2 images
Jan 15  Discovery of 2020 W5 (Lemmon) reported
Jan 15  Discovery of 2020 Y3 (ATLAS) reported
Jan 15  Discovery of 2021 A4 (NEOWISE) reported
Jan 15  Discovery of 2021 A5 (P/PanSTARRS) reported
Jan 15  Discovery of 2021 A6 (PanSTARSS) reported
Jan 15  Discovery of 2021 A7 (NEOWISE) reported
Jan 16  Recovery of 2013 EW90 (P/Tenagra) as 2020 Y4 reported
Jan 16  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jan 17  Recovery of 2013 A2 (P/Scotti) as 2021 A8 reported
Jan 17  Worachate Boonplod reports a non-group comet in real time C3 images
Jan 21  Robert Pickard reports a Meyer group comet in delayed C2 images
Jan 21  Masanori Uchina reports a Kreutz group comet in real time C3 images
Jan 21  Worachate Boonplod reports a non-group comet in real time C2 images
Jan 22  Peter Berrett reports a Meyer group comet in archival C2 images
Jan 22  Recovery of 2015 J3 (P/NEOWISE) as 2021 B1 reported
Jan 23  Discovery of 2021 A9 (PanSTARRS) reported
Jan 23  Discovery of 2021 B2 (PanSTARRS) reported
Jan 25  Peiyuan Sun reports a Kreutz group comet in real time C3 images
Jan 28  Peter Berrett reports a non-group comet in archival C2 images
Jan 28  Peter Berrett reports a Meyer group comet in archival C2 images
Jan 29  Recovery of 2010 A5 (P/LINEAR) as 2020 Y5 reported
Feb 02  Parth Bhagat reports a non-group comet in real time C3 images
Feb 04  Discovery of 2021 B3 (NEOWISE) reported
Feb 06  Discovery of 2021 A10 (NEOWISE)
Feb 08  Worachate Boonplod reports a Marsden group comet in real time C3 images
Feb 11  Worachate Boonplod reports three Kreutz group comets in real time C3 images
Feb 12  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Feb 14  Worachate Boonplod reports a non-group comet in real time C3 images
Feb 14  Szymon Liwo reports a Kreutz group comet in real time C3 images
Feb 16  Recovery of 2015 F1 (P/PanSTARRS) reported
Feb 23  Peter Berrett reports a non-group comet in delayed C2 images
Feb 24  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Feb 24  Discovery of 2021 C1 (Rankin) reported
Feb 24  Discovery of 2021 C2 (P/PanSTARRS) reported
Feb 25  2015 F1 recovery designated as 2021 A11
Feb 25  Worachate Boonplod reports two Kreutz group comets in real time C3 images
Feb 25  Michael Mattiazzo reports a possible SWAN comet
Feb 26  Discovery of 2021 C3 (Catalina) reported
Feb 26  Discovery of 2021 C4 (ATLAS) reported
Feb 26  Trygve Prestgard reports a Kreutz group comet in archival C3 images
Feb 26  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Feb 28  Michael Mattiazzo's comet discovered in SWAN images confirmed by Michael Jaeger in ground based images
Mar 04  SWAN comet designated 2021 D1
Mar 06  Michal Biesiada reports a Kreutz group comet in real time C3 images
Mar 08  Discovery of 2021 C5 (PanSTARRS) reported
Mar 08  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Mar 11  Sergey Sherpakov reports a Kreutz group comet in real time C3 images
Mar 13  Sergey Sherpakov reports a Kreutz group comet in real time C3 images
Mar 15  Masanori Uchina reports a Kreutz group comet in delayed C2 images
Mar 16  2009 Q1 (P/Hill) recovered as 2021 E1
Mar 20  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Mar 21  Discovery of 2021 C6 (Lemmon) reported
Mar 21  Worachate Boonplod reports a Meyer group comet in real time C2 images
Mar 22  Discovery of 2021 D2 (ZTF) reported
Mar 23  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Mar 24  Peiyuan Sun and Michal Biesiada report a Kreutz group comet in real time C3 images
Mar 25  Cometary activity confirmed in 2020 F7
Mar 26  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Mar 27  Trygve Prestgard reports a Kreutz group comet in archival C3 images
Mar 28  Szymon Liwo reports a Kreutz group comet in real time C2 images
Mar 29  Peiyuan Sun reports a Kreutz group comet in real time C3 images
Mar 30  Worachate Boonplod reports two Kreutz group comets in real time C3 images
Apr 01  Rafal Biros reports a Kreutz group comet in real time C2 images
Apr 02  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Apr 02  Masanori Uchina reports two Kreutz group comets in delayed C2 images
Apr 07  Cometary activity confirmed in 2019 U5
Apr 07  Peiyuan Sun reports a Kreutz group comet in real time C3 images
Apr 07  Szymon Liwo reports a Kreutz group comet in real time C2 images
Apr 08  Szymon Liwo reports a Kreutz group comet in real time C2 images
Apr 10  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Apr 11  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Apr 13  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Apr 13  Szymon Liwo reports a Kreutz group comet in real time C3 images
Apr 14  Peiyuan Sun reports a Kreutz group comet in real time C3 images
Apr 14  Masanori Uchina reports a Kreutz group comet in real time C2 images
Apr 15  Masanori Uchina reports a Kreutz group comet in real time C2 images
Apr 16  Masanori Uchina reports a Kreutz group comet in real time C2 images
Apr 17  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Apr 18  Szymon Liwo reports a Kreutz group comet in real time C2 images
Apr 20  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Apr 20  Szymon Liwo reports a Kreutz group comet in real time C2 images
Apr 21  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Apr 21  Szymon Liwo reports a Kreutz group comet in real time C2 images
Apr 24  Worachate Boonplod reports two Kreutz group comets in real time C2 images
Apr 27  Peter Berrett reports a non-group comet in archival C2 images
Apr 27  Discovery of A/2021 F1 reported
Apr 28  Discovery of A/2021 E2 reported
Apr 29  Worachate Boonplod reports a Kreutz group comet in real time C3 images
May 05  Worachate Boonplod reports a Kreutz group comet in real time C2 images
May 06  Discovery of 2021 E3 (ZTF) reported
May 06  Discovery of 2021 G1 (Leonard) reported
May 07  Szymon Liwo reports a Kreutz group comet in real time C3 images
May 08  Trygve Prestgard reports a Kreutz group comet in delayed C2 images
May 10  Worachate Boonplod reports a Kreutz group comet in real time C2 images
May 11  Worachate Boonplod reports a Kreutz group comet in real time C2 images
May 11  Worachate Boonplod reports a Meyer group comet in real time C2 images
May 12  Masanori Uchina reports a Kreutz group comet in real time C2 images
May 13  Worachate Boonplod reports a Kreutz group comet in real time C2 images
May 14  Michal Biesiada reports a comet in real time C2 images
May 15  Worachate Boonplod reports a Kreutz group comet in real time C2 images
May 15  Robert Pickard reports a Kreutz group comet in real time C2 images
May 16  Robert Pickard reports a Meyer group comet in real time C2 images
May 16  Peter Berrett reports a non-group comet in archival C2 images
May 22  Worachate Boonplod reports a Kreutz group comet in real time C3 images
May 22  Trygve Prestgard reports a non-group comet in real time C2 images
May 27  Discovery of 2021 K1 (ATLAS) reported
May 29  Cometary activity reported in 2020 PV6 (PanSTARRS)
May 29  Robert Pickard reports a Kreutz group comet in real time C2 images
May 31  Recovery of 2009 U4 (P/McNaught) as 2020 H10 reported
May 31  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Jun 02  Discovery of 2021 J1 (Maury-Attard) reported
Jun 02  Discovery of 2021 J2 (PanSTARRS) reported
Jun 03  Discovery of 2021 J3 (P/ATLAS) reported
Jun 03  Rafal Biros reports a Kreutz group comet in real time C2 images
Jun 03  Worachate Boonplod reports a Kreutz group comet in delayed C2 images
Jun 03  Trygve Prestgard reports a Kreutz group comet in archival C2 images
Jun 04  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 04  Masanori Uchina reports two Kreutz group comets in delayed C2 images
Jun 09  Discovery of 2021 K2 (MASTER) reported
Jun 09  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Jun 09  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 10  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 10  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jun 14  Michal Biesiada reports two Kreutz group comets in delayed C2 images
Jun 14  Masanori Uchina reports a Kreutz group comet in delayed C2 images
Jun 14  Worachate Boonplod reports a Kreutz group comet in real time C2 images
Jun 17  Recovery of 2006 S4 (P/Christensen) as 2021 L1 formally reported
Jun 19  Discovery of 2014 UN271 reported
Jun 20  Masanori Uchina reports a Kreutz group comet in delayed C2 images
Jun 21  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jun 21  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 22  Discovery of 2021 L2 (P/Leonard) reported
Jun 22  Discovery of 2021 L3 (Borisov) reported
Jun 23  Discovery of 2021 L4 (P/PanSTARRS) reported
Jun 23  Discovery of A/2021 E4 reported
Jun 23  Discovery of A/2021 G2 reported
Jun 23  Masanori Uchina reports a Kreutz group comet in real time C2 images
Jun 25  Discovery of 2021 G3 (PanSTARRS) reported
Jun 25  Discovery of 2021 K3 (Catalina) reported
Jun 25  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 25  Masanori Uchina reports a Kreutz group comet in real time C2 images
Jun 26  Recovery of 2008 CL94 (P/Lemmon) as 2021 A12 reported
Jun 26  Rafal Biros reports a Kreutz group comet in real time C2 images
Jun 26  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jun 26  Masanori Uchina reports a Kreutz group comet in delayed C2 images
Jun 27  Michal Biesiada reports a Kreutz group comet in real time C2 images
Jun 27  Michal Biesiada reports a Kreutz group comet in real time C3 images
Jun 27  Peter Berrett reports a Kreutz group comet in real time C2 images
Jun 28  Rafal Biros reports a Kreutz group comet in real time C2 images
Jun 29  Robert Pickard reports a Kreutz group comet in real time C2 images
Jun 29  Robert Pickard reports a Kreutz group comet in delayed C2 images
Jun 29  Rafal Biros reports two Kreutz group comets in real time C2 images
Jun 30  Michal Biesiada reports a Kreutz group comet in real time C2 images
Jul 03  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jul 03  Trygve Prestgard reports a Kreutz group comet in archival C2 images
Jul 03  Worachate Boonplod reports a non-group comet in real time C2 images
Jul 04  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jul 04  Robert Pickard reports a Kreutz group comet in archival C2 images
Jul 08  Recovery of 2012 S2 (P/La Sagra) as 2021 L5 reported
Jul 09  Cometary activity (tail) reported in (248370) 2005 QN173
Jul 13  Discovery of 2021 N1 (P/ZTF) reported
Jul 13  Rafal Biros reports a Kreutz group comet in archival C2 images
Jul 13  Salil Mulye reports a Kreutz group comet in real time C3 images
Jul 13  Worachate Boonplod reports a non-group comet in real time C3 images
Jul 13  Worachate Boonplod reports a Meyer group comet in real time C2 images
Jul 14  Sergey Shurpakov reports a Kreutz group comet in real time C3 images
Jul 15  Discovery of 2021 N2 (P/Fuls) reported
Jul 16  Masanori Uchina reports a Kreutz group comet in real time C3 images
Jul 19  Robert Pickard reports a Kreutz group comet in archival C2 images
Jul 19  Rafal Biros reports a Kreutz group comet in archival C2 images
Jul 19  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jul 20  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jul 22  Discovery of 2021 N3 (PanSTARRS) reported
Jul 23  Robert Pickard reports a Kreutz group comet in archival C2 images
Jul 25  Discovery of 2021 O1 (Nishimura) reported
Jul 25  Peter Berrett reports a non-group comet in archival C2 images
Jul 25  Rafal Biros reports a Kreutz group comet in archival C2 images
Jul 27  Worachate Boonplod reports a Kreutz group comet in real time C3 images
Jul 28  Robert Pickard reports a Kreutz group comet in archival C2 images
Jul 28  Peter Berrett reports a non-group comet in delayed C2 images
Jul 30  Recovery of 2005 W3 (P/Kowalski) as 2021 O2 reported
Aug 01  Discovery of 2021 O3 (PanSTARRS) reported


Published by Jonathan Shanklin. Jon Shanklin - jds@ast.cam.ac.uk