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Digest #3307
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Wed Aug 30, 2017 5:49 pm (PDT) . Posted by:
"Bomber2 Panther" outbackmanyep
Comet Observations 30th August 2017
29P/ Schwassmann-Wachmann 1
2017 Aug 30.68 UT; m1= 12.0; Dia= 0.4'; DC= 7; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Post-outburst. Close to 12th magnitude star. Coma dims in Swan Band filter.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
C/2015 VL62 Lemmon-Yeung-PanSTARRS
2017 Aug 30.70 UT; m1= 13.6; Dia= 0.9'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, low altitude = 17.7°.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2017 O1 ASASSN
2017 Aug 30.71 UT; m1= 9.9; Dia= 5.8'; DC= 4; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Enhances in Swan Band filter, diffuse coma with opaque centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
C/2015 ER61 PanSTARRS
2017 Aug 30.71 UT; m1= 13.1; Dia= 1.1'; DC= 2/3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Close to faint star. Coma diffuse, weak central condensation.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
217P/ LINEAR
2017 Aug 30.72 UT; m1= 12.9; Dia= 1'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, low altitude = 15.1°.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
29P/ Schwassmann-Wachmann 1
2017 Aug 30.68 UT; m1= 12.0; Dia= 0.4'; DC= 7; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Post-outburst. Close to 12th magnitude star. Coma dims in Swan Band filter.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ
C/2015 VL62 Lemmon-Yeung-PanSTARRS
2017 Aug 30.70 UT; m1= 13.6; Dia= 0.9'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, low altitude = 17.7°.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
C/2017 O1 ASASSN
2017 Aug 30.71 UT; m1= 9.9; Dia= 5.8'; DC= 4; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Enhances in Swan Band filter, diffuse coma with opaque centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= M; Cat= TK
C/2015 ER61 PanSTARRS
2017 Aug 30.71 UT; m1= 13.1; Dia= 1.1'; DC= 2/3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Close to faint star. Coma diffuse, weak central condensation.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
217P/ LINEAR
2017 Aug 30.72 UT; m1= 12.9; Dia= 1'; DC= 3; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Coma diffuse, low altitude = 15.1°.
Comparison stars checked using APASS data in Guide 9.0; Method= S; Cat= AQ
Good Clear Skies
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Astrocomet
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Colin James Watling
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Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)
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Real Astronomer and head of the Comet section for LYRA (Lowestoft and Great Yarmouth Regional Astronomers) also head of K.A.G (Kessingland Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork)
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Lyra Main Website: http://www.lyra-astro.co.uk/
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