Fwd: [CometObs] Digest Number 3630

Comet Observations Group

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Digest #3630

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C/2017 T2, C/2018 W2, 260P - 4 + 5 Oct. 2019 - J J Gonzalez. by "jjgonzalez jjgonzalez" jjgsgp

Message

1

C/2017 T2, C/2018 W2, 260P - 4 + 5 Oct. 2019 - J J Gonzalez.

Sat Oct 5, 2019 12:36 pm (PDT) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Oct. 5.00 UT: m1=9.6, Dia.=7', DC=1/, 20 cm SCT (100x).
[ Diffuse outer coma diameter 7', providing m=9.6.
Brighter inner coma diameter 2', providing m=10.9.
Sidgwick method. Tycho-2 comparison stars. SQM: 21.0.].

C/2018 W2 (Africano):
2019 Oct. 4.93 UT: m1=9.2, Dia.=6', DC=3/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.2.].

260P/McNaught:
2019 Oct. 4.97 UT: m1=11.0, Dia.=2.5', DC=4/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.2.].

( Alto del Castro, Leon, Spain, 42º 55' N, 5º 48' W, alt. 1720 m;
SQM 21.4 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)