Fwd: [CometObs] Digest Number 3634

Comet Observations Group

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Digest #3634

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C/2017 T2, C/2018 N2, 29P, 68P, 260P - 25 Oct. 2019 - J. J. Gonzalez by "jjgonzalez jjgonzalez" jjgsgp

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C/2017 T2, C/2018 N2, 29P, 68P, 260P - 25 Oct. 2019 - J. J. Gonzalez

Sun Oct 27, 2019 10:01 pm (PDT) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Oct. 25.97 UT: m1=9.4:, Dia.=6', DC=2, 20 cm SCT (133x).
[ Diffuse outer coma diameter 6', providing m=9.4:.
Brighter inner coma diameter 2.5', providing m=10.4.
Several stars inside the coma, the brightest being mag. 9.1 (TK).
Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

C/2018 N2 (ASASSN):
2019 Oct. 25.95 UT: m1=11.3, Dia.=1.3', DC=5, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.2.].

29P/Schwassmann-Wachmann:
2019 Oct. 25.87 UT: m1=11.0:, Dia.=4', DC=1/, 20 cm SCT (100x).
[ Faint and diffuse outer coma diameter 4', remnant of previous
outbursts. Nearby field stars checked in DSS. Sidgwick method.
Tycho-2 comparison stars. SQM: 21.1.].

68P/Klemola:
2019 Oct. 25.81 UT: m1=10.4, Dia.=2.5', DC=3, 20 cm SCT (100x).
[ Brighter inner coma diameter 2.5', providing m=10.4.
Faint and diffuse outer coma diameter 7', providing m=9.5.
Several stars inside the coma, the brightest being mag. 11.6 (TK).
Sidgwick method. Tycho-2 comparison stars. SQM: 20.7.].

260P/McNaught:
2019 Oct. 25.84 UT: m1=10.7, Dia.=2', DC=4, 20 cm SCT (133x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 20.9.].

( Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m;
SQM 21.3 at zenith ).

J. J. Gonzalez Suarez
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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 K.A.G (Kessingland Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork)