Fwd: [CometObs] Digest Number 3304

Comet Observations Group

1 Message

Digest #3304

1

C/2015 ER61, C/2017 O1, 217P. by "Juan Jose Gonzalez" jjgsgp

Message

1

C/2015 ER61, C/2017 O1, 217P.

Wed Aug 23, 2017 3:56 am (PDT) . Posted by:

"Juan Jose Gonzalez" jjgsgp

C/2015 ER61 (PANSTARRS):
2017 Aug. 21.08 UT: m1=10.5, Dia.=3', DC=2, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM : 21.2.].

C/2017 O1 :
2017 Aug. 21.11 UT: m1=8.8, Dia.=7', DC=3, 25x100B.
[ In 20 cm SCT (77x) : m1=9.0, Dia.=6', DC=3/.
Sidgwick method. Tycho-2 comparison stars. SQM : 21.2.].

217P/LINEAR:
2017 Aug. 21.12 UT: m1=12.2, Dia.=2', DC=3, 20 cm SCT (133x).
[ Field stars checked in DSS. Altitude: 18 deg.
Sidgwick method. APASS comparison stars. SQM : 20.9.].

( Alto del Castro - Aralla, Leon, Spain; Alt. 1720 m, 42º 54' N, 5º 48' W;
Mountain location, very clear sky. SQM 21.4 at zenith.).

----------------------------------------------------------
ICQ Format :

2015ER612017 08 21.08 S 10.5 TK 20.3T10 100 3 2 ICQ
XX GON05

2017O1 2017 08 21.10 S 9.0 TK 20.3T10 77 6 3/ ICQ
XX GON05

2017O1 2017 08 21.11 S 8.8 TK 10.0B 25 7 3 ICQ
XX GON05

217 2017 08 21.12 S 12.2 AQ 20.3T10 1332 3ICQ XX GON05

----------------------------------------------------------

J. J. Gonzalez

----------------------------------------------------------

Reply to sender . Reply to group . Reply via Web Post . All Messages (1) . Top ^

Visit Your Group

• Privacy • Unsubscribe • Terms of Use

--

Good Clear Skies

--

Astrocomet

--

Colin James Watling

--

Various Voluntary work-Litter Picking for Parish Council (Daytime) and also a friend of Kessingland Beach (Watchman)

--

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

--

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)

--

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