Monday, 4 March 2019

Fwd: [CometObs] Digest Number 3570

Comet Observations Group

3 Messages

Digest #3570

C/2018 Y1. by "jjgonzalez jjgonzalez" jjgsgp

Obs-V by "Castell.Nova" szasa0

Comet Observations 3rd March 2019 by "Bomber2 Panther" outbackmanyep

Messages

1 C/2018 Y1.

Sun Mar 3, 2019 3:49 am (PST) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2018 Y1 (Iwamoto):
2019 Mar. 2.91 UT: m1=7.5, Dia.=13', DC=3/, 12x45 monocular.
[ In 25x100B : m1=7.8, Dia.=10', DC=3/. Sidgwick method.
Tycho-2 comparison stars. SQM: 21.0.].

( Collado del Fresno - Aramo, Asturias, Spain, 43º 10' N, 5º 54' W, alt. 1221 m;
SQM : 21.0].

J. J. Gonzalez

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2a

Obs-V

Sun Mar 3, 2019 7:37 am (PST) . Posted by:

"Castell.Nova" szasa0

Some visual observation from last week:

38P/Stephen-Oterma
2019 Feb. 27.84UT: m1=13.3, Dia.=1.4', DC=3, 60 cm reflector (244x)

46P/Wirtanen
2019 Feb. 27.86UT: m1=9.5, Dia.=10', DC=3, 60 cm reflector (81x)

123P/West-Hartley
2019 Feb. 27.88UT: m1=13.1, Dia.=1.0', DC=6, 60 cm reflector (244x)

C/2016 N6 (PanStarrs)
2019 Feb. 27.77UT: m1=15.3, Dia.=0.4', DC=4, 60 cm reflector (305x)

C/2017 T2 (PanStarrs)
2019 Feb. 27.79UT: m1=13.6, Dia.=0.6', DC=4, 60 cm reflector (244x)

C/2018 L2 (ATLAS)
2019 Feb. 27.75UT: m1=12.5, Dia.=2.5', DC=1, 60 cm reflector (187x)

C/2018 Y1 (Iwamoto)
2019 Feb. 27.83UT: m1=7.8, Dia.=9.0', DC=1, 8x56B

Negative:
64P/Swift-Gehrels
2019 Feb. 27.81UT: m1=[14,0, Negative, it is strange but I could not glimpse it

S.Szabo

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3 Comet Observations 3rd March 2019

Sun Mar 3, 2019 6:45 pm (PST) . Posted by:

"Bomber2 Panther" outbackmanyep

Comet Observations 3rd March 2019

C/2018 Y1 Iwamoto
2019 Mar 03.41 UT; m1= 8.6; Dia= 9.5'; DC= 3; 11x70 B [Chris Wyatt, Walcha, NSW, Australia]
Difficult; Diffuse outer coma, slight brightening to centre.
Comparison stars checked using Tycho-2 data in Guide 9.0; Method= S; Cat= TK

2018Y1 2019 03 03.41 xS 8.6 TK 7.0B 11 9.5 3 ICQ XX WYA

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Astrocomet

Colin James Watling

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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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