Fwd: [CometObs] Digest Number 3641

Comet Observations Group

1 Message

Digest #3641

1

C/2017 T2, C/2018 N2, 260P - 3 Dec. 2019 - J J Gonzalez. by "jjgonzalez jjgonzalez" jjgsgp

Message

1

C/2017 T2, C/2018 N2, 260P - 3 Dec. 2019 - J J Gonzalez.

Thu Dec 5, 2019 11:44 am (PST) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Dec. 3.04 UT: m1=9.5, Dia.=4', DC=3, 20 cm SCT (100x).
[ Diffuse outer coma diameter 4', providing m=9.5.
Brighter inner coma diameter 2', providing m=10.3.
Nearby field stars made it difficult to estimate
the diameter of the outer coma. Sidgwick method.
Tycho-2 comparison stars. SQM: 21.1.].

C/2018 N2 (ASASSN):
2019 Dec. 3.06 UT: m1=11.1, Dia.=1.5', DC=3, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

260P/McNaught:
2019 Dec. 3.08 UT: m1=11.8, Dia.=1.2', DC=4, 20 cm SCT (133x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

( Aralla, Leon, Spain , 42º 55' N, 5º 50' W, alt. 1440 m;
SQM 21.3 at zenith ).

J. J. Gonzalez Suarez
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--
Good Clear Skies
--
Astrocomet
--
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)