Fwd: [CometObs] Digest Number 3559

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Digest #3559

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Comet Observations 11th February 2019 by "Bomber2 Panther" outbackmanyep

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C/2018 Y1 naked eye. by "jjgonzalez jjgonzalez" jjgsgp

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Comet Observations 11th February 2019

Mon Feb 11, 2019 9:59 pm (PST) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 11th February 2019

C/2018 Y1 Iwamoto
2019 Feb 11.64 UT; m1= 6.6; Dia= 30'; DC= 4; 7x50 B [Chris Wyatt, Walcha, NSW, Australia]
Coma large and diffuse, transparent outer coma, opaque inner coma, moderately condensed centre.
Comparison stars checked using Yale Bright Star data in Guide 9.0; Method= M; Cat= YG

60P/ Tsuchinshan
2019 Feb 11.66 UT; m1= 13.6; Dia= 0.9'; DC= 5/6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Faint tail traced to 2.4' in length in P.A. 303°, Faint stellar pseudo-nucleus visible in good seeing.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

123P/ West - Hartley
2019 Feb 11.67 UT; m1= 13.3; Dia= 1'; DC= 6; 25cm L, f:5 (x83) [Chris Wyatt, Walcha, NSW, Australia]
Difficult due to glare from nearby star. Faintly stellar at centre, diffuse outer coma.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

C/2016 M1 PanSTARRS
2019 Feb 11.68 UT; m1= 11.5; Dia= 2.5'; DC= 4; 25cm L, f:5 (x39) [Chris Wyatt, Walcha, NSW, Australia]
Low altitude = 17.8°; Moderately condensed centre, opaque inner coma.
Comparison stars checked using APASS data in Guide 9.0; Method= M; Cat= AQ

2018Y1 2019 02 11.64 xM 6.6 YG 5.0B 7 30.0 4 ICQ XX WYA
60 2019 02 11.66 xM 13.6 AQ 25.0L 5 83 0.9 5/ 2.4m303 ICQ XX WYA
123 2019 02 11.67 xM 13.3 AQ 25.0L 5 83 1.0 6 ICQ XX WYA
2016M1 2019 02 11.68 xM 11.5 AQ 25.0L 5 39 2.5 4 ICQ XX WYA

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C/2018 Y1 naked eye.

Tue Feb 12, 2019 4:00 am (PST) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2018 Y1 (Iwamoto):
2019 Feb. 12.03 UT: m1=5.5, Dia.=30', DC=5, naked eye.
[ In 12x45 monocular: m1=5.6, Dia.=25', DC=4.
Sidgwick method. Tycho-2 comparison stars. SQM: 21.4.].

( Collada de la Cobertoria, Asturias, Spain, 43º 9' N, 5º 54' W, alt. 1179 m;
SQM : 21.5 at zenit ).

J. J. Gonzalez

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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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