C/2018 W2 (Africano)

C/2018 W2 (Africano)
Reported observations:
2019 Sep. 11.07 UT: m1=9.8, Dia.=4.5, DC=2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Sep. 09.69 UT: m1=9.6, Dia.=6', DC=2, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Gunma, Japan)
2019 Sep. 06.93 UT: m1=10.1, Dia.=4.5', DC=3, ... 25.4-cm L(48x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, Lm=6.53]
2019 Sep. 06.07 UT: m1=10.1, Dia.=3.5', DC=2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Sep. 05.74 UT: m1=10.7, Dia.=3.9’, DC=3, ... 40-cm L(59x) ... Chris Wyatt (Walcha, NSW, Australia) [Very low altitude= 5.9°. Very diffuse, transparent coma. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2019 Sep. 04.92 UT: m1=10.3, Dia.=3', DC=3, ... 25.4-cm L(48x) ... Alexsandr Morozov (Novozybkov, Russia) [Near bright star 8.7m, method S, Lm=6.68]
2019 Sep. 04.88 UT: m1=12.8 CCD, Dia.=1.06', DC=6/, Tail=1' in PA=240 deg., ... 0.41-m Newtonian reflector f/3.9 + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Sep. 04.85 UT: m1=11.6, Dia.=1.3', DC=2/, ... 0.41-m Newton(63x) ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Sep. 04.10 UT: m1=9.8, Dia.=6', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.4]
2019 Sep. 03.74 UT: m1=10.8, Dia.=3.6’, DC=2, ... 40-cm L(59x) ... Chris Wyatt (Walcha, NSW, Australia)
2019 Sep. 03.07 UT: m1=10.0, Dia.=4', DC=3, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Sep. 03.02 UT: m1=13.2 CCD, Dia.=0.90', DC=7/, Tail=1.86' in PA=246 deg., ... 0.41-m Newtonian reflector f/3.9 + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Sep. 01.92 UT: m1=10.0, Dia.=5.5', DC=2/, ... 25.4-cm L(48x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.68]
2019 Sep. 01.05 UT: m1=10.4, Dia.=3.5', DC=2, ... 20-cm SCT(80x) ... Carlos Labordena (Castellón, España)
2019 Aug. 31.00 UT: m1=10.5, Dia.=2.5', DC=2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Aug. 28.05 UT: m1=9.9, Dia.=5', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.4]
2019 Aug. 28.04 UT: m1=10.1, Dia.=4.5', DC=2/, ... 12.0-cm R(30x) ... Maik Meyer (Frauenstein, Germany)
2019 Aug. 26.99 UT: m1=13.7 CCD, Dia.=0.62', DC=6/., ... 0.41-m Newtonian reflector f/3.9 + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Aug. 26.89 UT: m1=10.2, Dia.=3.1', DC=3, ... 25.4-cm L(48x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.68]
2019 Aug. 23.89 UT: m1=10.6, Dia.=2.0', DC=2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Aug. 23.81 UT: m1=10.7, Dia.=1.9', DC=3, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.68]
2019 Aug. 22.90 UT: m1=9.8, Dia.=5', DC=2, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m) [Several stars in coma, the brightest being mag 11.1 (TK). Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2019 Aug. 16.76 UT: m1=11.1, Dia.=1.8', DC=2/, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Gunma, Japan)
2019 Aug. 11.98 UT: m1=10.6, Dia.=2', DC=4, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.50]
2019 Aug. 09.92 UT: m1=11.2, Dia.=2.1', DC=3/, ... 25-cm L(150x) ... Danil Sidorko (Korenovsk, Russia)
2019 Aug. 09.03 UT: m1=10.8, Dia.=2.5', DC2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Aug. 08.99 UT: m1=10.8, Dia.=2.5', DC=2/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.70]
2019 Aug. 06.92 UT: m1=11.0, Dia.=2.6', DC=2/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.65]
2019 Aug. 05.09 UT: m1=10.2, Dia.=4', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 Aug. 04.11 UT: m1=11.6, Dia.=2', DC=2, ... 20-cm SCT(80x) ... Carlos Labordena (Castellón, España)
2019 Aug. 04.04 UT: m1=11.3, Dia.=3', DC=2/, ... 25.4-cm L(64x) ... Maik Meyer (Linter, Germany)
2019 Aug. 02.94 UT: m1=11.3, Dia.=2.2', DC=3, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.65]
2019 Aug. 02.11 UT: m1=10.3, Dia.=4', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 Aug. 01.01 UT: m1=11.5, Dia.=2.0', DC=3, ... 25.4-cm L(104x) ... Maik Meyer (Linter, Germany)
2019 July 30.03 UT: m1=10.3, Dia.=4', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto de la Camperona, Leon, Spain. Alt. 1600 m, 42º 51' N, 5º 12' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 July 30.02 UT: m1=11.8, Dia.=1.2', DC=3, ... 25.4-cm L(104x) ... Maik Meyer (Linter, Germany)
2019 July 29.95 UT: m1=11.6, Dia.=1.8', DC=3/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, LM=6.44]
2019 July 28.93 UT: m1=11.9, Dia.=1.8', DC=3, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.29]
2019 July 24.94 UT: m1=10.4, Dia.=4', DC=2/, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto de la Camperona, Leon, Spain. Alt. 1600 m, 42º 51' N, 5º 12' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 July 24.86 UT: m1=11.7, Dia.=1.9', DC=2/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, green zone]
2019 July 16.90 UT: m1=11.8, Dia.=2.2', DC=3/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, partial lunar eclipce]
2019 July 10.92 UT: m1=12.3, Dia.=1.6', DC=3, ... 25.4-cm L(190.5x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.38]
2019 July 10.02 UT: m1=12.0, Dia.=1.3', DC=3/, ... 25.4-cm L f:5(104x) ... Maik Meyer (Linter, Germany)
2019 July 06.10 UT: m1=11.1, Dia.=4', DC=2/, ... 20-cmSCT (100x) ... Juan Jose Gonzalez (Alto de la Camperona, Leon, Spain. Alt. 1600 m, 42º 51' N, 5º 12' W) [Brighter than expected. Altitude: 28°. Observation made under better conditions, from a dark mountain location, providing a much wider coma diameter and brighter m1 estimate in comparison with my previous June 26.96 observation. Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 June 26.96 UT: m1=12.7, Dia.=0.6', DC=5, ... 20-cm SCT(133x) ... Juan Jose Gonzalez (Alto de la Camperona, Leon, Spain. Alt. 1600 m, 42º 51' N, 5º 12' W) [Nearby field stars checked in DSS. Altitude: 16°. Sidgwick method. APASS comparison stars. SQM: 21.3]
2019 May  24.85 UT: m1=14.7, Dia.=0.3', DC=3, ... 50-cm L(300x) ... Sandor Szabo (Sopron, Hungary)
2019 Apr. 26.97 UT: m1=16.5 CCD, Dia.=0.38', DC=7/, ... 0.20-m f/4 Schmidt - Newton + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
2019 Apr. 05.05 UT: m1=16.4 CCD, Dia-=0.27', DC=8, ... 0.20-m f/4 Schmidt - Newton + CCD ... Sergey Shurpakov (Observatory A98, Belarus)
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