46P/Wirtanen

46P/Wirtanen
Reported observations:
2018 Nov. 14.08 UT: m1=6.7, Dia.=28', DC=3, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 13.98 UT: m1=6.8, Dia.=10', DC=3, ... 10-cm R f/5(34x) ... Willian Souza (Sao Paulo, Brazil);
2018 Nov. 13.08 UT: m1=6.8, Dia.=25', DC=3, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 13.00 UT: m1=6.2, Dia.=27', DC=2/, ... 12x45 monocular ... Juan Jose Gonzalez (Collada del Fresno - Sierra del Aramo, Asturias, Spain. Alt. 1280 m, 43º 10' N, 5º 54' W) [Altitude: 14 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2018 Nov. 12.04 UT: m1=6.8, Dia.=25', DC=3, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 11.67 UT: m1=6.6, Dia.=28’, DC=3, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Bright stars in coma, opaque centre. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Nov. 11.17 UT: m1=6.9, Dia.=25', DC=3, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 10.98 UT: m1=8.2, Dia.=11', DC=2, ... 20x80 B ... Valentín Díaz (La Romana, Alicante, España)
2018 Nov. 10.64 UT: m1=7.3, Dia.=29’, DC=3/, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Coma large, diffuse, moderately condensed. Enhances in Swan Band filter. Faint stars in coma. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Nov. 08.49 UT: m1=7.3, Dia.=28’, DC=3, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Coma large, circular, diffuse opaque centre. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Nov. 06.06 UT: m1=7.8, Dia.=20', DC=2/, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 06.05 UT: m1=7.9, Dia.=18', DC=3, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 05.93 UT: m1=7.6, Dia.=12', DC=3, ... 15-cm T(30x) ... Carlos Labordena (Castellón, España)
2018 Nov. 05.15 UT: m1=7.9, Dia.=18', DC=2, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 05.14 UT: m1=8.1, Dia.=15', DC=2/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 04.01 UT: m1=7.4, Dia.=15', DC=3, ... 10x50 B ... Juan Jose Gonzalez (Pandorado, Leon, Spain. Alt. 1190 m, 42º 47' N, 6º 00' W) [Altitude: 14 deg. In 25x100B: m1=7.7, Dia.=12', DC=3. In 20 cm SCT (77x): m1=8.1, Dia.=9', DC=3/. Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Nov. 03.63 UT: m1=8.5, Dia.=7', DC=2, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Gunma, Japan)
2018 Nov. 03.41 UT: m1=7.7, Dia.=20’, DC=3, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Coma close to faint stars, slight interference. Very tenuous outer coma. Enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Nov. 02.99 UT: m1=8.0, Dia.=18', DC=2, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 02.98 UT: m1=8.2, Dia.=15', DC=2/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 31.08 UT: m1=8.3, Dia.=12', DC=2/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 31.09 UT: m1=8.1, Dia.=14', DC=2, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 30.51 UT: m1=8.0, Dia.=12', ... 10x50 B ... David A. J. Seargent (Cowra, NSW, Australia) [Also visible in 6x35 binoculars]
2018 Oct. 30.43 UT: m1=8.4, Dia.=22’, DC=3/, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, faint stars in coma. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Oct. 30.09 UT: m1=8.2, Dia.=12', DC=2, ... 7x50 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 30.08 UT: m1=8.4, Dia.=10', DC=2/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 29.89 UT: m1=8.8, Dia.=5', DC=2, ... 20-cm SCT(50x) ... Carlos Labordena (Castellón, España)
2018 Oct. 29.46 UT: m1=7.9, Dia.=15', ... 25x100 B ... David A. J. Seargent (Cowra, NSW, Australia) 
2018 Oct. 29.42 UT: m1=8.6, Dia.=20’, DC=3/, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slightly brighter and opaque in centre. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Oct. 29.06 UT: m1=8.7, Dia.=6′, DC=3, .. 25-cm L(45x) ... Gonzalo Vargas (Cochabamba, Bolivia) [Wide coma and very diffuse centre, more clear view using an SkyGlow filter]
2018 Oct. 29.06 UT: m1=8.6, Dia.=8', DC=2/, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [clouds]
2018 Oct. 27.40 UT: m1=8.5, Dia.=20’, DC=3, ... 7x50 B ... Chris Wyatt (Walcha, NSW, Australia) [Very diffuse coma, opaque centre. Coma centre enhances in Swan Band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= S, Cat= TK]
2018 Oct. 22.06 UT: m1=9.5, Dia.=5', DC=2/, ... 22-cm L (60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil);[ moonlight; little enhancement with comet filter ]
2018 Oct. 20.11 UT: m1=9.2, Dia.=8', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Altitude: 11 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 Oct. 16.07 UT: m1=9.6, Dia.=7', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Mag. 11.2 (TK) star in coma. Altitude: 16 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Oct. 13.21 UT: m1=10.3, Dia.=4', DC=3, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 08.44 UT: m1=9.9, Dia.=10.2’, DC=4, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very large and diffuse, enhances well in Swan band filter. Semi-transparent outer coma, slightly more condensed at centre and opaque. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Oct. 07.71 UT: m1=11.9, Dia.=3.0', DC=3/, ... 40.0-cm L f/4.5(75x) ... Seiichi Yoshida (Gunma, Japan)
2018 Oct. 06.61 UT: m1=11.4, Dia.=1.7', DC=3/, ... 40.0-cm L f/4.5(75x) ... Seiichi Yoshida (Gunma, Japan)
2018 Oct. 06.21 UT: m1=11.4, Dia.=2', DC=2, ... 22-cm L(160x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 04.00 UT: m1=10.6, Dia.=4', DC=2/, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Altitude: 18 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 20.8]
2018 Oct. 01.42 UT: m1=10.9, Dia.=4.8’, DC=2, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma very diffuse and difficult, weakly condensed. Enhances with Swan Band filter applied and the coma appears to be a little larger. Sky slightly hazy. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Sep. 30.96 UT: m1=11.7, Dia.=1.5', DC=2, ... 23.5-cm SCT(138x) ... Carlos Labordena (Castellón, España)
2018 Sep. 27.40 UT: m1=11.0, Dia.=5’, DC=2/, ... 25-cm L f:5 (39x) ... Chris Wyatt (Walcha, NSW, Australia) [Moonlight interference. Moon -2.1° altitude. Difficult, very diffuse and weakly condensed. Enhances slightly in Swan Band filter. Low altitude= 17.2°. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Sep. 19.12 UT: m1=11.6, Dia.=2.0', DC=2/, ... 20-cm SCT(133x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Altitude: 25 deg. Observation made under better conditions, providing a wider coma diameter and brighter magnitude estimate in comparison with my previous Sep. 10 observation. Sidgwick method. APASS comparison stars. SQM: 21.3]
2018 Sep. 18.73 UT: m1=12.4, Dia.=3.4’, DC=2, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma enhances slightly in Swan Band filter. Very diffuse. Sky slightly hazy due to dust. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Sep. 17.70 UT: m1=[13.4, negative, ... 40.0-cm L f/4.5(257x) ... Seiichi Yoshida (Gunma, Japan)
2018 Sep. 16.70 UT: m1=[13.6, negative, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Gunma, Japan)
2018 Sep. 10.10 UT: m1=12.4, Dia.=1.5', DC=3, ... 20-cm SCT(133x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Altitude: 27 deg. Sidgwick method. APASS comparison stars. SQM: 21.3]
2018 Sep. 09.74 UT: m1=13.6, Dia.=1.3’, DC=3, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Difficult. Very diffuse. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2002 Nov. 07.14 UT: m1=11.6, Dia.=2', DC=2 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Faint diffuse object]
2002 Nov. 04.80 UT: m1=11.8:, Dia.=3', DC=2 ... 32-cm L (58x) ... Yoshimi Nagai (Yamanashi, Japan) [in Zodiacal light. comet is diffusing, hard object]
2002 Nov. 02.81 UT: m1=11.5:, Dia.=4', DC=2 ... 32-cm L (58x) ... Yoshimi Nagai (Yamanashi, Japan) [in Zodiacal light]
2002 Oct. 19.13 UT: m1=10.8, Dia.=3', DC=3 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Easily visible, quite large object, a bit brighter than expected]
2002 Oct. 16.81 UT: m1=11.1, Dia.=2.0', DC=2 ... 32-cm L (58x) ... Yoshimi Nagai (Yamanashi, Japan) [comet is diffusing]
2002 Oct. 12.82 UT: m1=10.7, Dia.=2.6', DC=3 ... 32-cm L (58x) ... Yoshimi Nagai (Yamanashi, Japan)
2002 Oct. 02.19 UT: m1=9.2, Dia.=4', DC=3 ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Puerto de la Cubilla, alt. 1610 m, Asturias, North Spain) [Moonlight]
2002 Oct. 01.79 UT: m1=10.3, Dia.=2.0', DC=6 ... 32-cm L (58x) ... Yoshimi Nagai (Yamanashi, Japan) [clear object]
2002 Sep. 30.13 UT: m1=8.8:, Dia.=1.5', DC=4 ... 25x100 B ... Werner Hasubick (Buchloe, Germany)
2002 Sep. 28.49 UT: m1=9.6, Dia.=2', DC=4 ... 20-cm L ... Alan Hale (Cloudcroft, New Mexico) [fairly bright moonlight. There clearly seems to have been an outburst of some sort; the comet is brighter -by almost two magnitudes- than it was at my previous observation in mid-September]
2002 Sep. 28.18 UT: m1=10.6, Dia.=2', DC=3, no tail ... 20-cm SCT (50x) ... Carlos Labordena (Castellon, Spain)
2002 Sep. 26.19 UT: m1=8.7, Dia.=4', DC=3 ... 11x80 B ... Juan Jose Gonzalez (Puerto de Aralla, alt.1720 m, Leon, North Spain) [Possibly in outburst. Moonlight, observation made under good conditions, from a mountain location]
2002 Sep. 26.18 UT: m1=8.8, Dia.=5', DC=5 ... 20-cm SCT (36x) ... Juan Jose Gonzalez (Puerto de Aralla, alt.1720 m, Leon, North Spain) [Possibly in outburst. Moonlight; observation made under good conditions, from a mountain location]
2002 Sep. 12.10 UT: m1=10.6, Dia.=2.5', DC=2 ... 20.3-cm L (108x) ... Piotr Guzik (Krosno, Poland) [Easy object thanks to very transparent sky]
2002 Sep. 09.12 UT: m1=10.5, Dia.=2.9', DC=4 ... 25x100 B ... Werner Hasubick (Buchloe, Germany)
2002 Sep. 08.14 UT: m1=13.5, Dia.=10", DC=7 ... 45-cm f:4.5 L (160x) ... Jo Jones & Gary Gawthrope (Hoober Obs, Rotherham, England)
2002 Sep. 05.10 UT: m1=10.5:, Dia.=2', DC=2 ... 20-cm L (63x) ... Piotr Guzik (Krosno, Poland)
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