Fwd: [CometObs] Digest Number 3643

Comet Observations Group

1 Message

Digest #3643

1

C/2017 T2, C/2018 N2 - 27 Dec. 2019 - J J Gonzalez. by "jjgonzalez jjgonzalez" jjgsgp

Message

1

C/2017 T2, C/2018 N2 - 27 Dec. 2019 - J J Gonzalez.

Sat Dec 28, 2019 5:12 pm (PST) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Dec. 27.92 UT: m1=9.7, Dia.=4', DC=4/, 20 cm SCT (77x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.2.].

C/2018 N2 (ASASSN):
2019 Dec. 27.94 UT: m1=11.5, Dia.=2', DC=3/, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

( Collado del Fresno - Aramo, Asturias, Spain, 43º 10' N, 5º 54' W,
alt. 1221 m; SQM 21.2 at zenith ).

J. J. Gonzalez Suarez
-------------------------------------------------------

--
Good Clear Skies
--
Astrocomet

--
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and
also a friend of Kessingland Beach (Watchman)
--
Real Astronomer and head of the Comet section for K.A.G (Kessingland
Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork

SUNSPOTS BREAK A SPACE AGE RECORD: Solar Minimum is officially "deep." 2019 has just broken a Space Age record for days without sunspots. Moreover, an international panel of scientists led by NOAA and NASA predicts that Solar Minimum could deepen even further, not reaching its lowest point until April of 2020. Visit Spaceweather.com for the full story.

            

Above: The blank sun on Dec. 16, 2019. Credit: NASA/Solar Dynamics Observatory

VENUS AND SATURN MEET IN THE SUNSET SKY: Tonight, when the sun goes down, step outside and look southwest. Venus and Saturn are having a beautiful close encounter in the sunset sky. If you have a small telescope, you can see the rings of Saturn and the gibbous form of Venus--or just enjoy the pairing with the naked eye. Visit Spaceweather.com for sky maps and observing tips.



Above: Venus and Saturn converge over Bydgoszcz, Poland, on Dec. 10th. Photo credit: Piotr Wieczorek

Fwd: [CometObs] Digest Number 3641

Comet Observations Group

1 Message

Digest #3641

1

C/2017 T2, C/2018 N2, 260P - 3 Dec. 2019 - J J Gonzalez. by "jjgonzalez jjgonzalez" jjgsgp

Message

1

C/2017 T2, C/2018 N2, 260P - 3 Dec. 2019 - J J Gonzalez.

Thu Dec 5, 2019 11:44 am (PST) . Posted by:

"jjgonzalez jjgonzalez" jjgsgp

C/2017 T2 (PANSTARRS):
2019 Dec. 3.04 UT: m1=9.5, Dia.=4', DC=3, 20 cm SCT (100x).
[ Diffuse outer coma diameter 4', providing m=9.5.
Brighter inner coma diameter 2', providing m=10.3.
Nearby field stars made it difficult to estimate
the diameter of the outer coma. Sidgwick method.
Tycho-2 comparison stars. SQM: 21.1.].

C/2018 N2 (ASASSN):
2019 Dec. 3.06 UT: m1=11.1, Dia.=1.5', DC=3, 20 cm SCT (100x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

260P/McNaught:
2019 Dec. 3.08 UT: m1=11.8, Dia.=1.2', DC=4, 20 cm SCT (133x).
[ Sidgwick method. Tycho-2 comparison stars. SQM: 21.1.].

( Aralla, Leon, Spain , 42º 55' N, 5º 50' W, alt. 1440 m;
SQM 21.3 at zenith ).

J. J. Gonzalez Suarez
----------------------------------------------------------

--
Good Clear Skies
--
Astrocomet
--
Colin James Watling
--
Various Voluntary work-Litter Picking for Parish Council (Daytime) and
also a friend of Kessingland Beach (Watchman)
--
Real Astronomer and head of the Comet section for K.A.G (Kessingland
Astronomy Group) and Navigator (Astrogator) of the Stars (Fieldwork)