364P/PANSTARRS

364P/PANSTARRS
Reported observations:
2018 Oct. 03.95 UT: m1=11.0, Dia.=4', DC=2, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Faint tail difficult to separate from the coma. The bright estimate (11.0) is related to the 4' observed width of the coma and tail.  Altitude: 25 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 20.9]
2018 Sep. 19.03 UT: m1=11.3, Dia.=3.5', DC=2, ... 20-cm SCT(77x) ... Juan Jose Gonzalez (Aralla, Leon, Spain. Alt. 1720 m, 42º 55' N, 5º 50' W) [Faint tail difficult to separate from the coma. The magnitude estimate (11.3) is related to the 3.5' observed width of the coma and tail. Altitude: 20 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. Tycho-2 comparison stars. SQM: 21.2]
2018 Sep. 10.12 UT: m1=11.8, Dia.=2.7', DC=2/, ... 20-cm SCT(100x) ... Juan Jose Gonzalez (Aralla, Leon, Spain; Alt. 1720 m, 42º 55' N, 5º 50' W) [Faint tail difficult to separate from the coma. The magnitude estimate (11.8) is related to the 2.7' observed width of the coma and tail. Altitude: 16 deg. Sidgwick method. Tycho-2 comparison stars. SQM: 21.4]
2018 Aug. 18.75 UT: m1=13.6, Dia.=0.9’, DC=5/, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Difficult; Diffuse with small opaque centre, sometimes stellar. Faint tail visible, traced to 1.7’ in length in P.A. 272°. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 Aug. 15.77 UT: m1=14.0, Dia.=0.9’, DC=4, ... 25-cm L f:5(83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint tail visible, traced to 2’ in length in P.A. 244° approximately. Sometimes appears faintly stellar in periods of good seeing. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 Aug. 11.27 UT: m1=12.6, Dia.=1', DC=5, ... 22-cm L(160x) ... Marco Antonio Coelho Goiato (Araçatuba, Brazil) [Method S, report revised using ASAS 3 catalogue]
2018 Aug. 08.77 UT: m1=12.7, Dia.=1.1’, DC=5/, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint tail visible, traced to 4.4’ in length in P.A. 240° approximately. Centre appears faintly stellar in good seeing. Moonlight (Moon altitude = 3.1°, 9.8% illuminated). Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 Aug. 06.64 UT: m1=13.2, Dia.=1.4’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faintly stellar, faint narrow tail visible and traced to 4’ in length in P.A. 247° approximately. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 23.77 UT: m1=12.2, Dia.=0.8’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint narrow tail visible, slightly curved to the East. Tail traced to 5.5’ in length in P.A. 220°. Oval and opaque inner coma. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 20.77 UT: m1=12.3, Dia.=0.9’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint narrow tail visible, slightly curved to the East. Tail traced to 4.4’ in length in P.A. 214°. Opaque oval shaped coma centre with stellar central condensation. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 18.78 UT: m1=11.9, Dia.=1.0’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 17.8°. Faint tail visible, slightly curved to the East. Tail traced to 6.5’ in length in P.A. 199°. Opaque inner coma, oval in shape aligned with tail, stellar centre. No enhancement in Swan Band filter. Rapid motion noticeable. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 16.78 UT: m1=11.5, Dia.=0.7’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude= 11.5°; Faint tail traced to 4.6’ in length in P.A. 198°. Coma dims in Swan Band filter. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 13.80 UT: m1=11.1, Dia.=1’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 7.6°; Faint tail visible 4.4’ in length in P.A. 186°, no enhancement in Swan Band filter. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 09.34 UT: m1=11.3, Dia.=0.8’, DC=5/, ... 25cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Low altitude = 8.1°. Faint tail visible, 3’ in length in P.A. 166° approximately. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 08.36 UT: m1=11.0, Dia.=1.2’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Extremely low altitude = 5.0°, poor seeing. Faint tail visible, 3.6’ in length in P.A. 152° approximately. Rapid motion noticeable. Close to 11.8 mag star. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 July 04.34 UT: m1=11.3, Dia.=1’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint narrow tail visible, traced to 7’ in length in P.A. 151° approximately; Low altitude = 15.1°, slight twilight interference. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 23.35 UT: m1=11.9, Dia.=1.4’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Moonlight; Faint tail visible, traced to 2.7’ in length in P.A. 089°. Slight interference from glare of mag 6.4 star in field. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 22.35 UT: m1=11.9, Dia.=0.9’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Moonlight; Faint tail visible, traced to 2.2’ in length in P.A. 118° approximately. Stellar central condensation, diffuse outer coma. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 14.35 UT: m1=12.8, Dia.=0.9’; DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Faint tail visible, traced to 2.3’ in length in P.A. 110°; Stellar central condensation in good seeing. Visible faintly at x39 with no enhancement in Swan Band filter at this magnification. Slight zodiacal light interference. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 12.35 UT: m1=13.1, Dia.=1.5’, DC=6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Diffuse coma, faint stellar central condensation. Faint coma extension to the ESE approximately. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 11.35 UT: m1=13.1, Dia.=1.1’, DC=5/6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse, stellar central condensation in periods of good seeing. Does not enhance in Swan Band filter. Coma elongated to the East approximately, just barely visible at x39. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
2018 June 07.35 UT: m1=13.2, Dia.=0.7’, DC=5/6, ... 25-cm L f:5 (83x) ... Chris Wyatt (Walcha, NSW, Australia) [Coma diffuse with stellar central condensation visible in periods of good seeing. Slight zodiacal light and glare from Venus interference. Does not enhance in Swan Band filter. At x166 the coma appears more fanned to the ESE approximately. Comparison stars checked using APASS data in Guide 9.0, Method= M, Cat= AQ]
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