Fwd: [CometObs] Digest Number 3576

Comet Observations Group

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Digest #3576

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C/2017 T2, C/2018 Y1, 46P, 123P. by "jjgonzalez jjgonzalez" jjgsgp

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1a

C/2017 T2, C/2018 Y1, 46P, 123P.

Thu Apr 4, 2019 7:44 am (PDT) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Apr. 2.85 UT: m1=9.2, Dia.=6', DC=2/, 20 cm SCT (77x).
[ Faint and diffuse outer coma. Altitude: 10°. Zodiacal light.
Mountain location, very clear sky. Sidgwick method.
Tycho-2 comparison stars. SQM: 20.6.].

C/2018 Y1 (Iwamoto):
2019 Apr. 2.87 UT: m1=9.8, Dia.=6', DC=2/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 20.9].

46P/Wirtanen:
2019 Apr. 2.91 UT: m1=11.2, Dia.=4', DC=2, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.3.].

123P/West-Hartley:
2019 Apr. 2.89 UT: m1=11.5, Dia.=2', DC=3, 20 cm SCT (133x).
[ Sidgwick method. APASS comparison stars. SQM: 21.3.].

( Alto del Celleron - Benllera, Leon, Spain, 42º 45' N, 5º 44' W, alt. 1190 m;
SQM : 21.3 at zenit ).

J. J. Gonzalez Suarez

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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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