Fwd: [CometObs] Digest Number 3411

1

C/2015 O1, C/2016 M1, C/2016 N6, C/2016 R2, C/2018 EF9, 37P.          

Thu May 17, 2018 11:34 am (PDT) . Posted by:

"Juan Jose Gonzalez" jjgsgp

C/2015 O1 (PANSTARRS):
2018 May. 15.99 UT: m1=12.0, Dia.=1.2', DC=5, 20 cm SCT (100x).
[ Sidgwick method. APASS comparison stars. SQM : 21.7.].

C/2016 M1 (PANSTARRS):
2018 May. 16.02 UT: m1=9.0, Dia.=4', DC=3, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 20.8.].

C/2016 N6 (PANSTARRS):
2018 May. 15.97 UT: m1=11.6, Dia.=2.0', DC=4, 20 cm SCT (133x).
[ Sidgwick method. APASS comparison stars. SQM : 21.3.].

C/2016 R2 (PANSTARRS):
2018 May. 15.90 UT: m1=11.3, Dia.=2', DC=2/, 20 cm SCT (133x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 20.9.
Zodiacal light. Altitude: 22 deg.].

C/2018 EF9 (Lemmon):
2018 May. 16.01 UT: m1=11.8, Dia.=3', DC=1/, 20 cm SCT (133x).
[ Sidgwick method. APASS comparison stars. Brighter than expected.
From dark mountain skies the coma appears large and very diffuse,
without central condensation. Motion checked over a 120-min period.
Field stars checked in DSS. Limiting star magnitude near comet: 14.7
(GSC). SQM : 21.4.].

37P/Forbes:
2018 May. 16.12 UT: m1=11.5, Dia.=1.5', DC=2/, 20 cm SCT (100x).
[ Sidgwick method. APASS comparison stars. SQM : 20.7.
Altitude: 10 deg.].

( Pandorado, Leon, Spain; Alt. 1190 m, 42º 47' N, 6º 00' W;
SQM 21.7at zenith.).

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ICQ Format :

2015O1 2018 05 15.99 S 12.0 AQ 20.3T101001.2 5 ICQ XX GON05

2016M1 2018 05 16.02 S 9.0 TK 20.3T10 100 4 3 ICQ XX GON05

2016N6 2018 05 15.97 S 11.6 AQ 20.3T101332.0 4 ICQ XX
GON05

2016R2 2018 05 15.90 S 11.3 TK 20.3T10 1332 2/ ICQ XX
GON05

2018EF9 2018 05 16.01 S 11.8 AQ 20.3T10 133 3 1/ ICQ
XX GON05

37 2018 05 16.12 S 11.5 AQ 20.3T101001.5 2/ ICQ XX GON05

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J. J. Gonzalez

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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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Profile: http://www.google.com/profiles/astrocomera

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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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Lyra Main Website: http://www.lyra-astro.co.uk/