52P/Harrington-Abell

52P/Harrington-Abell
Reported observations:
2014 Apr. 20.38 UT: m1=16.4 CCD, Dia.=0.38′... 0.50-m f/6.8 astrograph + CCD + focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, Q62. Remotely from Siding Spring, Australia))
2014 Mar. 30.21 UT: m1=16.3 CCD, Dia.=0.29′, Tail= 0.5′ in PA: 90 deg ... 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06 (remotely Mayhill, U.S.A.)
2014 Mar. 28.82 UT: m1=[15.5, Negative... 50.8--cm L (307x)... Sandor Szabo (Sopron, Hungary)
2014 Mar. 06.09 UT: m1=15.3 CCD, Dia.=0.38′, Tail= 0.9′ in PA: 94 deg .. 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2014 Jan. 19.08 UT: m1=14.7 CCD, Dia.=0.77′, Tail= 0.7′ in PA: 99 deg ... 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06. Remotely Mayhill, U.S.A.)
2013 Dec. 31.38 UT: m1=14.8 CCD, Dia.=0.75′, Tail= 0.7′ in PA: 126 deg .. [T21]0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer... A. Novichonok & T. Prystavski (iTelescope observatory, H06, remotely Mayhill, U.S.A.)
2013 Oct. 28.88 UT: m1=17.0 CCD... 0.40-m f/8 Ritchey-Chretien + CCD... V. Gerke & T. Prystavski (Ka-Dar observatory, TAU station C32, remotely Nizhniy Arkhyz, Russia)
1999 Apr. 11.54 UT: m1=13.0:, Dia.=0.5'... 41-cm L... Andrew Pearce (Nedlands, Western Australia)[Difficult observation in bright sky and low elevation]
1999 Apr. 10.84 UT: m1=12.4, Dia.=1.3', DC=1... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany) [only visible with averted vision]
1999 Apr. 07.50 UT: m1=[12.5,... 20-cm L (158x)... Michael Mattiazzo (Wallaroo, South Australia)
1999 Apr. 05.80 UT: m1=12.2, Dia.=1.9', DC=2... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1999 Mar. 19.88 UT: m1=12.0, Dia.=1.9', DC=2... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1999 Mar. 18.10 UT: m1=11.6, Dia.=2.0', DC=6... 30.5-cm SCT... Frank Schiralli, Jr. (Northport, NY)
1999 Mar. 13.94 UT: m1=11.4, Dia.=0.8', DC=6... 25.4-cm SCT(167x)... Sebastian F. Hoenig (Eislingen, Germany)
1999 Mar. 12.99 UT: m1=11.2, Dia.=0.8', DC=6... 25,4-cm SCT(167x)... Sebastian F. Hoenig (Eislingen, Germany)
1999 Mar. 12.83 UT: m1=11.7, Dia.=3.7', DC=1/... 25.4-cm L (65x)... Maik Meyer (Frauenstein, Germany)
1999 Mar. 12.80 UT: m1=11.5, Dia.=0.6', DC=4... 44-cm L (156x)... Werner Hasubick (Buchloe, Germany)
1999 Mar. 08.83 UT: m1=11.8, Dia.=1.4', DC=1/... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany)
1999 Mar. 07.75 UT: m1=11.3, Dia.=2', DC=1/... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1999 Mar. 07.27 UT: m1=12.4, Dia.=1.4', DC=1... 25.6-cm L (84x)... Nicolas Biver (Dillingham, Oahu, HI)
1999 Jan. 22.76 UT: m1=10.7, Dia.=2'.3, DC=2... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1999 Jan. 21.88 UT: m1=10.6, Dia.=2', DC=2... 11-cm L (50x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1999 Jan. 20.04 UT: m1=10.6, Dia.=2.3', DC=4/... 41-cm L (70x)... J. Bortle (Stormville, NY) [Small, dense central region surrounded by an extensive faint outer halo.]
1999 Jan. 19.60 UT: m1=11.5:, Dia.=1', DC=3... 20-cm L (158x)... Michael Mattiazzo (Wallaroo, South Australia)[in close proximity to 11th mag star]
1999 Jan. 18.94 UT: m1=10.7, Dia.=2.9', DC=4... 25.4-cm L (65x)... Maik Meyer (Frauenstein, Germany)
1999 Jan. 18.77 UT: m1=11.3, Dia.=0.7', DC=4, 20-cm T (51x)... Werner Hasubick (Buchloe, Germany)
1999 Jan. 17.77 UT: m1=10.7, Dia.=3.0', DC=4... 25.4-cm L (65x)... Maik Meyer (Frauenstein, Germany)
1999 Jan. 17.11 UT: m1=10.6, Dia.=2', DC=4... 25.4-cm SCT (63x)... Paulo M. Raymundo (Salvador, Brazil)
1999 Jan. 16.90 UT: m1=11.0, Dia.=1.5', DC=3... 13-cm R (35x)... Wolfgang Vollmann (Payerbach, Austria)
1999 Jan. 16.65 UT: m1=12.0, Dia.=0.8', DC=3... 41-cm L... Andrew Pearce (Nedlands, Western Australia)
1999 Jan. 14.56 UT: m1=11.0, Dia.=2', DC=3... 20-cm L (45x)... Michael Mattiazzo (Wallaroo, South Australia)[has faded since last observation on Jan 12th]
1999 Jan. 14.31 UT: m1=10.8, Dia.=3.0', DC=4, Tail= 7' in PA: 270 deg ... 25.6-cm L (42x)... Nicolas Biver (Dillingham, Oahu, HI)
1999 Jan. 14.24 UT: m1=10.9, Dia.=1.4', DC=4... 25.6-cm L (111x)... Charles Morris (Fillmore, CA)
1999 Jan. 12.59 UT: m1=10.6, Dia.=1.5',DC=4... 20-cm L (45x)... Michael Mattiazzo (Wallaroo, South Australia)[slightly brighter and more condensed than Jager]
1999 Jan. 12.30 UT: m1=10.5, Dia.=3.5', DC=4, Tail= 9' in PA: 265 deg ... 25.6-cm L (42x)... Nicolas Biver (Dillingham, Oahu, HI) [Large and faint outer halo, central condensation at m=13.9 (169x)]
1999 Jan. 11.01 UT: m1=10.7, Dia.=1.5', DC=5/... 41-cm L (70x)... J. Bortle (Stormville, NY)
1998 Jan. 08.04 UT: m1=10.5, Dia.=1.9', DC=6... 41-cm L (70x)... J. Bortle (Stormville, NY) [Intensely condensed very near the center.]
1999 Jan. 07.86 UT: m1=11.0, Dia.=2.0', DC=3... 13-cm R (35x)... Wolfgang Vollmann (Payerbach, Austria)
1999 Jan. 06.76 UT: m1=11.3, Dia.=0.6', DC=4, 44-cm L (63x)... Werner Hasubick (Buchloe, Germany)
1999 Jan. 06.76 UT: m1=10.3, Dia.=2.6', DC=D4... 25.4-cm L (65x)... Maik Meyer (Frauenstein, Germany) [bright and small central region surrounded by faint outer and ill-defined coma]
1999 Jan. 05.78 UT: m1=9.8, Dia.=3.1', DC=3/... 25.4-cm L (65x)... Maik Meyer (Frauenstein, Germany)
1999 Jan. 05.02 UT: m1=10.8, Dia.=1.5', DC=5/... 41-cm L (70x)... J. Bortle (Stormville, NY) [Intensely bright central knot within coma at 114x.]
1998 Nov. 24.87 UT: m1=11.8, Dia.=1'.6, DC=3 ... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1998 Nov. 24.25 UT: m1=13.2, Dia.=1.4', DC=3, Tail= 3' in PA: 087 deg ... 25-cm f/4 SCT (200x)... Larry Robinson (Sunflower Observatory, Olathe, Kansas)
1998 Nov. 23.97 UT: m1=11.7, Dia.=1'.8, DC=2 ... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine) [Sky condition was very good]
1998 Nov. 22.74 UT: m1=12.0, Dia.=1'.6, DC=3 ... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1998 Nov. 12.92 UT: m1=11.9, Dia.=1.5', DC=3... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany)
1998 Oct. 30.42 UT: m1=12.5, Dia.=1.6', DC=3, Tail= 6' in PA: 090 deg ... 25-cm f/4 SCT (200x)... Larry Robinson, (Sunflower Observatory, Olathe, Kansas)
1998 Oct. 26.50 UT: m1=12.6, Dia.=1.5', DC=2... 25.6-cm L (84x)... Nicolas Biver (Mokuleia, Oahu, HI)
1998 Oct. 20.98 UT: m1=12.1, Dia.=1.5', DC=S4... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany) [comet seemed brighter and more condensed compared w/ last observations]
1998 Oct. 20.46 UT: m1=12.7, Dia.=1', DC=2... 25.6-cm L (84x)... Nicolas Biver (Dillingham, Oahu, HI)
1998 Oct. 17.01 UT: m1=12.3, Dia.=1.4', DC=3... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany)
1998 Oct. 16.94 UT: m1=12.4, Dia.=1'.8, DC=1... 44 -cm L (100x)... Timo Karhula (Virsbo, Sweden) [Observed during a power failure in the neighbourhood.]
1998 Oct. 02.49 UT: m1=12.8, Dia.=1'.5, DC=3/... 41-cm L... Alan Hale (Cloudcroft, NM)
1998 Sep. 30.54 UT: m1=12.6, Dia.=1', DC=2... 25.6-cm L (84x)... Nicolas Biver (Mokuleia, Oahu, HI) [at 169x: 2' tail in PA 275]
1998 Sep. 30.04 UT: m1=12.4, Dia.=1'.6, DC=3... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1998 Sep. 26.43 UT: m1=12.8, Dia.=1'.5, DC=3/... 41-cm L... Alan Hale (Cloudcroft, NM)
1998 Sep. 25.06 UT: m1=12.6, Dia.=1.2',DC=2/... 25-cm L (61x)... Maciej Reszelski (Szamotuly, Poland)
1998 Sep. 24.98 UT: m1=12.3, Dia.=1'.8, DC=3... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1998 Sep. 23.98 UT: m1=12.4, Dia.=1'.6, DC=3... 20-cm L (70x)... Alexandr Baransky (Observatory of Kyiv University, Ukraine)
1998 Sep. 22.13 UT: m1=12.4, Dia.=1.2',DC=2... 25-cm L (61x)... Maciej Reszelski (Szamotuly, Poland)
1998 Sep. 22.03 UT: m1=12.4, Dia.=1.6', DC=2/... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany)
1998 Sep. 21.00 UT: m1=12.3:, Dia.=1.4',DC=2... 25-cm L (121x)... Maciej Reszelski (Szamotuly, Poland)
1998 Sep. 20.57 UT: m1=13.1, Dia.=1', DC=2... 25.6-cm L (84x)... Nicolas Biver (Dillingham, Oahu, HI) [at 169x the comet is elongated on up to 2' in PA 270]
1998 Sep. 20.07 UT: m1=12.2, Dia.=1.3', DC=2/... 25.4-cm L (104x)... Maik Meyer (Frauenstein, Germany)
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