38P/Stephan-Oterma

38P/Stephan-Oterma
Reported observations:
2019 Mar. 11.73 UT: m1=15.4 CCD, Dia.=0.30', DC=7/, Tail=2.6' in PA: 133 deg., ... 0.25-m f/4.7 Newton + CCD ... Sergey Shurpakov (Observatory C36, Belarus)
2019 Feb. 24.92 UT: m1=11.5, Dia.=2', DC=2/, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Puerto de Aralla, Leon, Spain. 42º 54' N, 5º 48' W, alt. 1530 m) [Sidgwick method. APASS comparison stars. SQM: 21.5]
2019 Feb. 23.50 UT: m1=12.6, Dia.=1.8', DC=3, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Ibaraki, Japan)
2019 Feb. 05.86 UT: m1=11.3, Dia.=2', DC=3, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España)
2019 Jan. 25.88 UT: m1=11.3, Dia.=2', DC=3, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España)
2019 Jan. 25.82 UT: m1=10.5, Dia.=5', DC=3, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Villacintor, Leon, Spain. Alt. 930 m, 42º 29' N, 5º 11' W) [Mag. 12.4 (APASS) star in coma. Sidgwick method. Tycho-2 comparison stars. SQM: 21.3]
2019 Jan. 24.74 UT: m1=10.5, Dia.=1.8', DC=3, ... 25.4-cm L (120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.19]    
2019 Jan. 21.19 UT: m1=11.0, Dia.=2.5', DC=2/, ... 25.4-cm L f:5(64x) .... Maik Meyer (Linter, Germany) [all obs during total lunar eclipse]
2019 Jan. 14.64 UT: m1=10.4, Dia.=5.0’, DC=3/, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma faint and diffuse, opaque centre. Outer coma enhances in Swan Band filter, inner coma dims. Low altitude= 13.9°. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2019 Jan. 14.08 UT: m1=10.3, Dia.=4', DC=3/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.5]
2019 Jan. 13.05 UT: m1=10.5, Dia.=3.5', DC=4, ... 25-cm L (66x) ... Valentín Díaz (La Romaneta, Alicante, España)
2019 Jan. 12.60 UT: m1=10.4, Dia.=5.5’, DC=4, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Enhances slightly in Swan Band filter, diffuse coma, moderately condensed centre. Low altitude= 14.5°. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2019 Jan. 11.24 UT: m1=11.0, Dia.=2', DC=3, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España)
2019 Jan. 08.70 UT: m1=10.2, Dia.=1.5', DC=2.5, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.42]
2019 Jan. 06.84 UT: m1=9.9, Dia.=5', DC=3/, Tail= 0.15 deg. in PA: 260 deg., ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.0; 21.2 at zenith]
2019 Jan. 06.82 UT: m1=10.5, Dia.=3', DC=6/, ... 40.0-cm Lf/4.5 (75x) ... Seiichi Yoshida (Ibaraki, Japan)
2019 Jan. 04.87 UT: m1=9.9, Dia.=5', DC=3, Tail= 0.15 deg. in PA: 260 deg., ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Les Retuertes - Sierra del Aramo, Asturias, Spain. alt. 1350 m, 43º 10' N, 5º 54' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.0; 21.3 at zenith]
2019 Jan. 03.21 UT: m1=10.9, Dia.=2.5', DC=3, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España)
2019 Jan. 01.85 UT: m1=9.9, Dia.=5', DC=3/, Tail= 0.15 deg. in PA: 260 deg., ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Dec. 31.62 UT: m1=10.1, Dia.=5', DC=6/, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Ibaraki, Japan)
2018 Dec. 30.92 UT: m1=10.3, Dia.=4', DC=4, ... 27-cm SCT(58x) ... Valentín Díaz (Cancárix, Albacete, España)
2018 Dec. 30.66 UT: m1=10.0, Dia.=4.5’, DC=3/, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Moonlight. Low altitude= 18.8°. Coma diffuse, opaque centre, transparent outer coma, enhances slightly in Swan band filter. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Dec. 30.19 UT: m1=10.1, Dia.=3.5', DC=3, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Dec. 29.84 UT: m1=9.7, Dia.=6', DC=3/, Tail= 0.15 deg. in PA: 260 deg., ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars]
2018 Dec. 15.03 UT: m1=9.9, Dia.=3', DC=3, ... 20-cm T(80x) ... Carlos Labordena (Castellón, España)
2018 Dec. 14.23 UT: m1=9.5, Dia.=5', DC=3/, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Dec. 14.05 UT: m1=10.2, Dia.=4', DC=3/, Tail= 0.2 deg. in PA: 270 deg., ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Trichero - Soto y Amio, Leon, Spain. Alt. 1190 m, 42º 46' N, 5º 53' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.2]
2018 Dec. 13.83 UT: m1=9.8, Dia.=3', DC=3, ... 13-cm L F:5(25x) ... Danil Sidorko (Korenovsk, Russia)
2018 Dec. 09.80 UT: m1=9.6, Dia.=3.2', DC=4, ... 13-cm L F:5(25x) ... Danil Sidorko (Korenovsk, Russia)
2018 Dec. 09.25 UT: m1=9.5, Dia.=5', DC=3, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Dec. 07.14 UT: m1=9.4, Dia.=5', DC=3/, Tail= 0.2 deg. in PA: 260 deg., ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars]
2018 Dec. 05.94 UT: m1=10.2, Dia.=3', DC=4, ... 15-cm T(44x) ... Carlos Labordena (Castellón, España)
2018 Dec. 01.75 UT: m1=10.5, Dia.=3.3', DC=4, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Gunma, Japan)
2018 Nov. 30.86 UT: m1=10.7 CCD, Dia.=1.22', DC=6, ... 0.25-m f/4.7 Newton + CCD ... Sergey Shurpakov (Observatory C36, Belarus)
2018 Nov. 30.62 UT: m1=9.8, Dia.=3.0', DC=6, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Gunma, Japan)
2018 Nov. 29.83 UT: m1=10.3, Dia.=1.8', DC=4, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.47]
2018 Nov. 27.87 UT: m1=11.7 CCD, Dia.=1.11', DC=6/, Tail=2.6' in PA: 258 deg., ... 0.25-m f/4.7 Newton + CCD ... Sergey Shurpakov (Observatory C36, Belarus)
2018 Nov. 20.98 UT: m1=10.1, Dia.=3', DC=3, ... 20-cm T(50x) ... Carlos Labordena (Castellón, España)
2018 Nov. 18.00 UT: m1=9.8, Dia.=3', DC=3/, ... 25.4-cm L(64x) ... Maik Meyer (Limburg, Germany)
2018 Nov. 17.94 UT: m1=9.4, Dia.=4.5’, DC=3, ... 25x100 B ... Martin Lehky (Czech Republic)
2018 Nov. 17.68 UT: m1=9.8; Dia.=4', ... 25x100 B ... David A. J. Seargent (Cowra, NSW, Australia)
2018 Nov. 17.01 UT: m1=9.7, Dia.=3', DC=3/, ... 25.4-cm L(64x) ... Maik Meyer (Limburg, Germany)
2018 Nov. 16.94 UT: m1=9.6, Dia.=4’, DC=3/, ... 25x100 B ... Martin Lehky (Czech Republic)
2018 Nov. 16.13 UT: m1=9.5, Dia.=5', DC=3, Tail= 0.15 deg. in PA: 260 deg., ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Collada del Fresno - Sierra del Aramo, Asturias, Spain. Alt. 1221 m, 43º 10' N, 5º 54' W) [Several stars inside the coma, the brightest being mag. 11.3 (HS). Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Nov. 16.13 UT: m1=10.0, Dia.=2.5', DC=5, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, Lm=6.30]
2018 Nov. 14.05 UT: m1=11.1, Dia.=1.5', DC=6, ... 60-cm L(81x) ... Sandor Szabo (Sopron, Hungary)
2018 Nov. 13.15 UT: m1=9.4, Dia.=5', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Collada del Fresno - Sierra del Aramo, Asturias, Spain. Alt. 1280 m, 43º 10' N, 5º 54' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.2]
2018 Nov. 13.10 UT: m1=9.5, Dia.=1.5', DC=4/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, Lm=6.65]
2018 Nov. 11.70 UT: m1=10.4, Dia.=5.5’, DC=5/, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint star in coma, very diffuse outer coma. Moderately condensed opaque centre. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat= TK]
2018 Nov. 11.21 UT: m1=9.3, Dia.=5', DC=2, ... 20x100 B ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 11.02 UT: m1=10.0, Dia.=7', DC=4, ... 25-cm L(57x) ... Valentín Díaz (La Romana, Alicante, España)
2018 Nov. 10.67 UT: m1=9.8, Dia.=4’, DC=5/, ... 25-cm L f:5(39x) ... Chris Wyatt (Walcha, NSW, Australia) [Opaque centre, sometimes faintly stellar. Semi-transparent outer coma. Enhances in Swan Band filter. Close to star. Comparison stars checked using Tycho-2 data in Guide 9.0, Method= M, Cat=TK]
2018 Nov. 09.17 UT: m1=9.3, Dia.=5', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Collada del Fresno - Sierra del Aramo, Asturias, Spain. Alt. 1221 m, 43º 10' N, 5º 54' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Nov. 06.98 UT: m1=9.5, Dia.=4’, DC=4, ... 25x100 B ... Martin Lehky (Czech Republic)
2018 Nov. 05.96 UT: m1=9.8, Dia.=4', DC=3, ... 15cm T(30x) ... Carlos Labordena (Castellón, España)
2018 Nov. 05.19 UT: m1=9.7, Dia.=3', DC=3, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Nov. 05.06 UT: m1=10.4, Dia.=1.5', DC=4/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, Lm=6.48]
2018 Nov. 04.00 UT: m1=9.0, Dia.=6', DC=3, ... 25x100 B ... Juan Jose Gonzalez (Pandorado, Leon, Spain. Alt. 1190 m, 42º 47' N, 6º 00' W) [In 20 cm SCT (77x) : m1=9.1, Dia.=6', DC=3. Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 Nov. 03.65 UT: m1=10.0, Dia.=6', DC=3/, ... 40.0-cm L f/4.5(36x) ... Seiichi Yoshida (Gunma, Japan)
2018 Oct. 22.25 UT: m1=10.0, Dia.=3', DC=3, ... 22-cm L (60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil);[ moonlight; clouds ]
2018 Oct. 21.08 UT: m1=11.1, Dia.=0.8', DC=5, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.75]
2018 Oct. 22.16 UT m1=10.2, Dia.=3.4', DC=2, ... 25.4-cm L f/5(64x) ... Maik Meyer (Limburg, Germany)
2018 Oct. 17.06 UT: m1=11.1, Dia.=1.3', DC=4, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, green zone]
2018 Oct. 16.16 UT: m1=10.3, Dia.=2.9', DC=3, ... 25.4-cm L f/5(64x) ... Maik Mayer (Limburg, Germany)
2018 Oct. 16.08 UT: m1=9.1, 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) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.0]
2018 Oct. 15.15 UT: m1=10.3, Dia.=2.8', DC=3, ... 25.4-cm L f/5(64x) ... Maik Mayer (Limburg, Germany)
2018 Oct. 14.09 UT: m1=10.3 Dia.=3.8', DC=3, ... 25.4-cm L f/5(64x) ... Maik Mayer (Limburg, Germany)
2018 Oct. 13.31 UT: m1=10.1, Dia.=3', DC=4, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [clouds, very near stars with m1: 9.90 and m1:10.85]
2018 Oct. 13.00 UT: m1=12.8 CCD, Dia.=0.57', DC=6/, ... 0.20-m f/4 Schmidt-Newton + CCD ... S. Shurpakov (Observatory A98, Belarus)
2018 Oct. 12.12 UT: m1=12.5 CCD, Dia.=0.44', DC=6/, ... 0.25-m f/4.7 Newton + CCD ... S. Shurpakov (Observatory C36, Belarus)
2018 Oct. 12.06 UT: m1=11.2, Dia.=1.5', DC=4 ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S, Lm=6.48]
2018 Oct. 11.15 UT: m1=10.6, Dia.=2.6', DC=3, ... 25.4-cm L f/5(64x) ... Maik Mayer (Limburg, Germany)
2018 Oct. 08.12 UT: m1=10.7, Dia.=1.9', DC=2/, ... 25.4-cm L f/5 (64x) ... Maik Meyer (Limburg, Germany)
2018 Oct. 07.71 UT: m1=11.4, Dia.=3.2', DC=5/, ... 40.0-cm L f/4.5(75x) ... Seiichi Yoshida (Gunma, Japan)
2018 Oct. 07.07 UT: m1=10.7, Dia.=2', DC=3, ... 20-cm T(58x) ... Carlos Labordena (Castellón, España)
2018 Oct. 07.02 UT: m1=11.1, Dia.=1.7', DC=3/, ... 25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method S]
2018 Oct. 06.77 UT: m1=10.9, Dia.=2.4', DC=6, ... 40.0-cm L f/4.5(75x) ... Seiichi Yoshida (Gunma, Japan)
2018 Oct. 06.23 UT: m1=10.5, Dia.=3', DC=3, ... 22-cm L(60x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil)
2018 Oct. 06.14 UT: m1=10.5:, Dia.=2.4', DC=2, ... 25.4-cm L f/5 (64x) ... Maik Meyer (Limburg, Germany)
2018 Oct. 04.99 UT: m1=13.2 CCD, Dia.=0.37', DC=7/, ... 0.25-m f/4.7 Newton + CCD ... S. Shurpakov (Observatory C36, Belarus)
2018 Oct. 04.02 UT: m1=9.9, Dia.=5', DC=2/, ... 20-cm SCT(100x) ... Juan Jose Gonzalez ( Aralla, Leon, Spain, Alt. 1720 m, 42º 55' N, 5º 50' W) [Asymmetric coma. Altitude: 20 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2018 Sep. 22.04 UT: m1=11.7, Dia.=1', DC=3, ...25.4-cm L(120x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, green zone, Lm=6.63]
2018 Sep. 22.00 UT: m1=13.6 CCD, Dia.=0.30', DC=7/, ... 0.25-m f/4.7 Newton + CCD ... S. Shurpakov (Observatory C36, Belarus)
2018 Sep. 19.17 UT: m1=10.0, Dia.=6', DC=2, ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Mag. 12.1 (APASS) star in coma. Sidgwick method. Tycho-2 comparison stars. SQM: 21.2]
2018 Sep. 18.74 UT: m1=12.4, Dia.=1.8’, DC=6, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, close to bright star. Small stellar central condensation. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 Sep. 17.68 UT: m1=11.5, Dia.=1.3', DC=6, ... 40.0-cm L f/4.5(144x) ... Seiichi Yoshida (Gunma, Japan)
2018 Sep. 17.02 UT: m1=12.4, Dia.=1', DC=3, ... 25.4-cm L (120x) ... Alexsandr Morozov (Novozybkov, Russia) [method M, green zone, Lm=6.44]
2018 Sep. 16.69 UT: m1=11.4, Dia.=2.3', DC=4/, ... 40.0-cm L f/4.5(75x) ... Seiichi Yoshida (Gunma, Japan)
2018 Sep. 15.00 UT: m1=14.0 CCD, Dia.=0.44', DC=4/, ... 0.20-m f/4 Schmidt-Newton + CCD ... Serguey Shurpakov (Observatory A98, Belarus)
2018 Sep. 10.17 UT: m1=9.9, Dia.=5', DC=2, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Aralla, Leon, Spain; Alt. 1720 m, 42º 55' N, 5º 50' W) [Mag. 11.3 (TK) star in coma. Sidgwick method. Tycho-2 comparison stars. SQM: 21.2]
2018 Aug. 24.02 UT: m1=14.7 CCD, Dia.=0.33', DC=8, ... 0.20-m f/4 Schmidt-Newton + CCD ... Serguey Shurpakov (Observatory A98, Belarus)
2018 Aug. 20.15 UT: m1=10.5, Dia.=5', DC=2/, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Sidgwick method. Tycho-2 comparison stars. SQM: 21.1]
2018 Aug. 18.76 UT: m1=12.9, Dia.=1.5’, DC=4, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Diffuse, moderately condensed semi-opaque centre. Does not appear to enhance in Swan Band filter. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 Aug. 18.03 UT: m1=14.3 CCD, Dia.=0.33', DC=7/, ... 0.20-m f/4 Schmidt-Newton + CCD ... Serguey Shurpakov (Observatory A98, Baran', Belarus)
2018 Aug. 15.76 UT: m1=13.1, Dia.=1.6’, DC=2/, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Very diffuse, slight brightening to centre. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
2018 Aug. 15.17 UT: m1=10.9, Dia.=3', DC=2/, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Motion followed for a 75-min period. Astronomical twilight. Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2018 Aug. 12.05 UT: m1=13.5, Dia.=0.6', DC=0, ... 0.60-m f/4 L(244x, 305x) ... Gabor Santa (Tarján, Hungary) [coma is more diffuse in PA=240, but no tail visible, h=22 deg.]
2018 Aug. 10.17 UT: m1=11.5, Dia.=2.5', DC=3, ... 20-cm SCT(133x) ... Juan Jose Gonzalez (Alto del Castro, Leon, Spain. Alt. 1720 m, 42º 54' N, 5º 48' W) [Brighter than expected. Astronomical twilight. Sidgwick method. Tycho-2 comparison stars. SQM: 20.5]
2018 Aug. 08.76 UT: m1=14.1, Dia.=1.2’, DC=3, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Difficult; diffuse coma, slightly brighter in centre. Comparison stars checked using APASS data in Guide 9.0, Method= S, Cat= AQ]
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