43P/Wolf-Harrington

43P/Wolf-Harrington}
Reported observations:
2017 Jan. 24.80 UT: m1=13.6, Dia.=0.6′, DC=2/ ... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Ibaraki, Japan)
2016 Dec. 30.16 UT: m1=14.7, Dia.=0.5’, DC=2 ... 60-cm L (305x)... Sandor Szabo (Hungary)
2016 Dec. 29.21 UT: m1=12.4, Dia.=1.5′, DC=3 ... 35-cm L (62x)... Jakub Cerny (Senohraby, Czech Republic)
2016 Dec. 26.19 UT: m1=12.0, Dia.=2′, DC=1/ ... 20-cm SCT (100x)... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España, Alt. 1350 m, 43º 10′ N, 5º 54′ W) [Método Sidgwick. Estrellas de comparación APASS. SQM zenital: 21.3. Cielo muy claro de montaña]
2016 Dec. 05.22 UT: m1=10.5, Dia.=3′, DC=2 ... 20-cm SCT (100x)... Juan José González (Pico del Pozo de la Nieve – Sierra de la Bobia, alt. 1130 m, Asturias, España) [Luz zodiacal. Cielo muy claro de montaña]
2016 Dec. 02.82 UT: m1=13.3, Dia.=1.0′, DC=3 ... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2016 Dec. 01.68 UT: m1=13.1, Dia.=1’, DC=3 ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre. Coma centre appears slightly offset to the East]
2016 Nov. 30.22 UT: m1=10.3, Dia.=4′, DC=2 ... 20-cm SCT (77x)... Juan José González (Les Retuertes – Sierra del Aramo, alt. 1350 m, Asturias, España) [Luz zodiacal. Cielo muy claro de montaña]
2016 Nov. 29.18 UT: m1=13.7, Dia.=0.7′, DC=5 ... 60-cm L (240x)... Sandor Szabo (Hungary)
2016 Nov. 25.22 UT: m1=10.0, Dia.=5′, DC=2/ ... 20-cm SCT (77x)... Juan José González (Sierra de Tineo, alt. 1040 m, Asturias, España) [Cielo muy claro de montaña]
2016 Nov. 25.13 UT: m1=10.8, Dia=3′, DC=2, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Nov. 04.82 UT: m1=12.7, Dia.=0.7′, DC=4/ ... 40.0-cm L f/4.5 (144x)... Seiichi Yoshida (Gunma, Japan)
2016 Nov. 01.70 UT: m1=12.8, Dia.=1’, DC=2/ ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, slight brightening to centre, does not enhance in Swan Band filter... Low altitude = 16.0°]
2016 Oct. 30.18 UT: m1=11.3, Dia.=2.5′, DC=2, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
2016 Oct. 27.21 UT: m1=10.1, Dia.=5′, DC=2/ ... 20-cm SCT (100x)... Juan José González (Pandorado, alt. 1190 m, León, España) [Alguna interferencia lunar. Luz zodiacal. Altura sobre el horizonte: 26º. Cielo muy claro de montaña]
2016 Oct. 20.82 UT: m1=12.9, Dia.=0.4′, DC=4 ... 40.0-cm L f/4.5 (257x)... Seiichi Yoshida (Gunma, Japan)
2016 Oct. 11.73 UT: m1=12.8, Dia.=0.8’, DC=4 ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, weakly condensed opaque centre offset to the East edge of the coma. Very faint Tail visible approximately 1.7’in length in P.A. 303°. Low altitude = 12.9°]
2016 Oct. 05.74 UT: m1=12.5, Dia.=0.8’, DC=4 ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Outer coma diffuse brightening to a weakly condensed but opaque centre and offset to the East edge of the coma. No Tail. Low altitude = 13.8°. Does not enhance in Swan Band filter]
2016 Oct. 03.19 UT: m1=9.5, Dia.=6′, DC=2/ ... 20-cm SCT (77x)... Juan José González (Alto del Castro, alt. 1720 m, León, España) [A 100x: Cola de 0.3º en AP 290º. Luz zodiacal. Altura sobre el horizonte: 20º. Cielo muy claro de montaña]
2016 Sep. 30.18 UT: m1=11.3, Dia.=3′, DC=2, no tail... 20-cm SCT (80x)... Carlos Labordena (Castellón, España)
2016 Sep. 29.19 UT: m1=9.5, Dia.=6′, DC=2/ ... 20-cm SCT (77x)... Juan José González (Alto del Castro, alt. 1720 m, León, España) [Luz zodiacal. Altura sobre el horizonte: 20º. Cielo muy claro de montaña]
2016 Sep. 27.75 UT: m1=12.1, Dia.=1.1’, DC=3/ ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 11.5°. Does not enhance in Swan Band filter. Faint outer coma brightening to a weakly condensed centre. Slight interference from rising Moon]
2016 Sep. 09.16 UT: m1=9.5, Dia.=6′, DC=3 ... 20-cm SCT (77x)... Juan José González (Alto del Trichero, alt. 1190 m, León, España) [Luz zodiacal. Altura sobre el horizonte: 14º. Cielo muy claro de montaña]
2016 Sep. 06.16 UT: m1=9.6, Dia.=5′, DC=2/ ... 20-cm SCT (77x)... Juan José González (Nogarejas, alt. 920 m, León, España) [Luz zodiacal. Altura sobre el horizonte: 14º. Cielo claro de montaña]
2016 Sep. 03.14 UT: m1=11.5, Dia.=4′, DC=2, no tail... 20-cm SCT (50x)... Carlos Labordena (Castellón, España)
2016 Sep. 01.09 UT: m1=11.3, Dia.=0.9′, DC=4 ... 60-cm L (244x)... Sandor Szabo (Hungary)
2016 Aug. 31.09 UT: m1=12.1, Dia.=2.0′, DC=4 ... 35-cm L (178x)... Jakub Černý (Senohraby, Czech Republic)
2016 Aug. 30.17 UT: m1=9.8, Dia.=5′, DC=2/ ... 20-cm SCT (77x)... Juan José González (Pandorado, alt. 1190 m, León, España) [Luz zodiacal. Altura sobre el horizonte: 15º. Cielo muy claro de montaña]
2016 Aug. 30.09 UT: m1=12.4, Dia.=1.2′, DC=2/ ... 40-cm L (200x)... Jakub Černý (Senohraby, Czech Republic)
2016 Aug. 12.79 UT: m1=12.3, Dia.=0.8’, DC=4 ... 25-cm L f:5 (83x)... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 8.1°. Zodiacal light interference. Close to mag 9.8 star 1.4’away in PA 246.5° and 11.0 mag star 1’away in PA 151.3°. Motion tracked over 20 minute period. Does not enhance in Swan Band filter. Coma diffuse with moderately condensed centre, no Tail. SQM reading at zenith was 21.84 averaged over 6 readings at -2°C]
2016 Aug. 11.15 UT: m1=10.9, Dia.=3′, DC=2/ ... 20-cm SCT (133x)... Juan José González (Alto del Trichero, alt. 1190 m, León, España) [Comienzo del crepúsculo astronómico. Luz zodiacal. Altura sobre el horizonte: 14º. Cielo muy claro de montaña]
2004 Apr. 17.79 UT: m1=12.1, Dia.=1'.8, DC=2 ... 36-cm L (80x) ... A. Baransky (Pylypovychi, Ukraine)
2004 Apr. 16.78 UT: m1=12.1:, Dia.=1'.5, DC=2 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Apr. 15.76 UT: m1=11.9, Dia.=1'.7, DC=2 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Apr. 15.46 UT: m1=12.5, Dia.=1.4', DC=3 ... 41-cm L (90x) ... Andrew Pearce (Noble Falls, Western Australia)
2004 Apr. 14.87 UT: m1=12.0, Dia.=1.5', DC=3 ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Puerto de Aralla, alt. 1560 m, Leon, North Spain) [Zodiacal Light]
2004 Apr. 14.77 UT: m1=11.9, Dia.=1.7', DC=3 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Apr. 13.79 UT: m1=12.0:, Dia.=1.5', DC=3 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Apr. 08.78 UT: m1=12.4, Dia.=1.2', DC=4 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland)
2004 Mar. 15.86 UT: m1=11.8, Dia.=2', DC=3 ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Puerto de Aralla, alt. 1560 m, Leon, North Spain)
2004 Mar. 13.76 UT: m1=12.2, Dia.=0.7', DC=3 ... 41-cm L (89x) ... Sergey E. Shurpakov (Baran',Belarus)
2004 Mar. 12.73 UT: m1=12.2:, Dia.=1.3', DC=3 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Mar. 12.73 UT: m1=12.2:, Dia.=1.3', DC=3 ... 20-cm L (70x) ... A. Baransky (Bucha, Ukraine)
2004 Mar. 12.45 UT: m1=12.7, Dia.=1.2', DC=3/ ... 25.4-cm L (113x) ... Katsumi Yoshimoto (Yamaguchi, Japan)
2004 Mar. 10.80 UT: m1=12.6, Dia.=1.2', DC=3 ... 36-cm.L (100x) ... Ricardas Balciunas (Ignalina, Lithuania)
2004 Feb. 21.71 UT: m1=12.4, Dia.=1.3', DC=3 ... 36-cm.L (100x) ... Ricardas Balciunas (Ignalina, Lithuania)
2004 Feb. 19.75 UT: m1=12.5, Dia.=1', DC=3 ... 30-cm L (60x) ... Vitali Nevski (Vitebsk, Belarus)
2004 Feb. 15.48 UT: m1=12.0, Dia.=1.1', DC=2 ... 40.0-cm L f/4.5 (144x) ... Seiichi Yoshida (Ibaraki, Japan)
2004 Feb. 11.76 UT: m1=12.7, Dia.=0.8', DC=3 ... 30-cm L (60x) ... Vitali Nevski (Vitebsk, Belarus)
2004 Feb. 10.87 UT: m1=12.1, Dia.=1.5', DC=3 ... 20-cm SCT (77x) ... Juan Jose Gonzalez (Sierra del Aramo, alt.980 m, Asturias, North Spain)
2004 Jan. 23.46 UT: m1=11.7, Dia.=0.9', DC=3 ... 25.4-cm T f/6.3 (128x) ... Seiichi Yoshida (Ibaraki, Japan)
2004 Jan. 19.90 UT: m1=12.6, Dia.=1.5', DC=3 ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Sierra del Aramo, alt.1010 m, Asturias, North Spain)
2004 Jan. 15.08 UT: m1=13.7, Dia.=23", DC = 5/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Split wide tail in PAs 53 and 21 deg, for about 1.2' each; coma is very uniform with little central cond,; pretty object]
2004 Jan. 11.71 UT: m1=12.3, Dia.=1.0', DC=4 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Easily visible object, brighter than two weeks ago]
2003 Dec. 25.78 UT: m1=12.6, Dia.=1.0', DC=4 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland)
2003 Dec. 24.68 UT: m1=12.6, Dia.=1.0', DC=4 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Easy target]
2003 Dec. 23.70 UT: m1=16.0 CCD, Dia.=20", DC=3/ ... 11-cm L (1/7,3) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Dec. 20.81 UT: m1=12.7, Dia.=1', DC=2, no tail ... 23.5-cm SCT (188x) ... Carlos Labordena (Castellon, Spain)
2003 Dec. 19.73 UT: m1=12.5:, Dia.=1.0', DC=3 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Comet observed between clouds]
2003 Dec. 16.91 UT: m1=12.5, Dia.=1', DC=3 ... 20-cm SCT (100x) ... Juan Jose Gonzalez (Villasecino, alt. 1229 m, Leon, North Spain)
2003 Dec. 14.50 UT: m1=12.4, Dia.=0.9', DC=4 ... 25.4-cm T f/6.3 (128x) ... Seiichi Yoshida (Ibaraki, Japan)
2003 Dec. 07.09 UT: m1=14.3 CCD, Dia.=21", DC=4/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod, (ASO - Petit Jean H41) [Comet measured in very strong moonlight and bright conditions for astrometric puroses: very diffuse and measurements adversely affected by low altitude and moonlight; surprisingly bright with tail clearly visible in CCD, PA 67 deg. for 3' length; very diffuse with some degree of nucleus visible (*m2=15.3CCD)]
2003 Nov. 14.79 UT: m1=13.2, Dia.=0.8', DC=3 ... 20.3-cm L (108x) ... Piotr Guzik (Krosno, Poland)
2003 Oct. 30.77 UT: m1=14.8 CCD, Dia.=16", DC=5 ... 11-cm L (1/7,3) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Oct. 28.76 UT: m1=13.3, Dia.=0.8', DC=3 ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland) [Easy, moderately condensed object. Very good conditions, NELM~6.5]
2003 Oct. 25.75 UT: m1=12.9, Dia=~1', DC=3 ... 25-cm Newton (48x) ... Toni Scarmato (Calabria, Italy)
2003 Sep. 25.97 UT: m1=13.6:, Dia.=0.6', DC=2 ... 20.3-cm L (108x) ... Piotr GuzikÊ (Krosno, Poland) [Close to 14.5 mag star. Motion confirmed during 1-hour period. NELM~7.0]
2003 Sep. 25.74 UT: m1=15.7 CCD, Dia.=0.40', DC=4 ... 11-cm L (1/7,3) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Sep. 24.26 UT: m1=14.4 CCD, Dia.=12" in haze, DC=6/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean H41) [Very thick haze and intermittent clouds; *m2=16.6CCD, highly condensed with round coma]
2003 Sep. 21.93 UT: m1=13.7:, Dia.=0.5', DC=2 ... 20.3-cm L (108x) ... Piotr Guzik (Krosno, Poland) [Very faint object visible thanks to excellent conditions NELM=6.8]
2003 Sep. 20.28 UT: m1=14.9 CCD, Dia.=15", DC=7/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean, H41) [Very tight and round coma; no tail; comet seems somewhat more condensed than earlier; *m2=16.5CCD]
2003 Sep. 16.25 UT: m1=15.0 CCD, Dia.=15", DC=5/9 ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Petit Jean, H41) [Unchanged from previous night although possible a bit more diffuse; quite round and symmetrical with poorly defined nucleus, not distinctly stellar but with increasing intensity toward center]