Fwd: [CometObs] Digest Number 3314

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Digest #3314

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29P, C/2017 O1. by "Juan Jose Gonzalez" jjgsgp

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29P, C/2017 O1.

Sat Sep 16, 2017 4:27 am (PDT) . Posted by:

"Juan Jose Gonzalez" jjgsgp

C/2017 O1 (ASASSN):
2017 Sep. 16.01 UT: m1=8.2, Dia.=9', DC=3, 10x50B.
[ In 25x100B : m1=8.3, Dia.=9', DC=2/.
Sidgwick method. Tycho-2 comparison stars. SQM : 21.3.].

29P/Schwassmann-Wachmann:
2017 Sep. 15.87 UT: m1=11.5, Dia.=2.0', DC=4, 20 cm SCT (100x).
[ In evolution after the recent outbursts. Starlike central
condensation, m2=14.0: (AQ). Brighter inner coma diameter : 2.0',
providing m=11.5 (AQ). Faint and diffuse outer coma diameter : 3'.5,
providing m=10.3: (TK), remnant of previous outbursts. Sidgwick method.
Field stars checked in DSS. Altitude: 32 deg. SQM : 21.1.].

( Cruce de Aralla - Embalse de Barrios de Luna, Leon, Spain;
Alt. 1110 m, 42º 54' N, 5º 52' W.
Mountain location, very clear sky. SQM 21.4 at zenith.).

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ICQ Format :

2017O1 2017 09 16.00 S 8.3 TK 10.0B 25 9 2/ ICQ XX GON05

2017O1 2017 09 16.01 S 8.2 TK 5.0B 10 9 3 ICQ XX GON05

29 2017 09 15.87 S 11.5 AQ 20.3T10 100 2.0 4 ICQ XX GON05

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J. J. Gonzalez

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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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