December 10, 2016
p.m. to 10:00 p.m.
Rudy Park, York, PA. Observatory
will be an Astronomy Program in the Observatory if cloudy.
York County Astronomical Society, Inc. is a non-profit organization
dedicated to the advancement of the science of astronomy.
Expand your mind by taking in the expanse of the universe.
Come and view the night skies with us through one of our telescopes and let our experienced
members guide you on a tour of celestial wonders, including stars, planets,
nebulae, and the moon. You are also invited to bring your own telescope and
share your experiences with other amateur astronomers. Star Charts are available to help your exploration of the nighttime sky.
observing activities at John Rudy Park, if the weather is questionable, please check our voice message at
717 759 YCAS (9227)
for notice of any late cancellation or for an updated
status, check this website.
Observatory See: Directions
If it is clear or mostly clear, the activity will occur as scheduled. If it is completely cloudy, raining or snowing, the activity will be changed to an astronomical presentation.
information on events, scheduling a private party star watch, directions
to the observing site, or for general Society information
please email YCAS at: E-Mail
Visible for Public Observing Night Sky
December 10, 2016
Sun is in the constellation Ophiuchus the "Serpent
Holder" and sets at 4:42 pm.
evening sky finds the Moon high in the south in the constellation
Cetus the "Whale" and is at phase 87.53% lit. The Moon sets at 2:58 a.m.. See: Moon
is in the western evening sky in the constellation Capricornus and
sets at 8:00 pm as public observing begins. Venus is at phase
is just visible low in the southwest after sunset located in the constellation
Capricornus the "Sea Goat". Mars sets at 9:41 p.m.
is in the south southwest in the constellation Aquarius the
"Water Carrier". Neptune sets
at 11:04 pm.
is high in the south southeast sky located in the constellation
Pisces the "Fishes". Uranus sets at 2:35 am.
winter constellations are rising in the east. Orion the
Gemini the "Twins" and well above the eastern horizon is Taurus the
"Bull" with its bright red star Aldebaran. About 13 degrees above
Aldebaran is the open star cluster M-45 also known as the
or "Seven Sisters".
In the south southwest are the constellations
Cetus the "Whale", Pisces the "Fish" and almost overhead at 8pm is
Pegasus the "Winged Horse". Above Pegasus is the
constellation Andromeda, the "Princess of Ethiopia" with
its magnificent spiral galaxy M-31. the famous Andromeda galaxy,
which is our nearest large neighbor galaxy.
Setting in the west are the stars consisting of the constellations Lyra with its
bright star Vega, Cygnus with its bright star Deneb and Aquila
with the bright star Altair are low in the west.
in the north lies Perseus the "Rescuer of Andromeda"
with the the beautiful Perseus Double Cluster consisting of two
open star cluster NGC 869 & NGC 884. The constellation of Cassiopeia, the
"Queen". The Big
Dipper lies horizontal and is partly visible above the northern
horizon. Above the Big Dipper is the Little Dipper which
contains Polaris the north star. See How to use the Big
Dipper to find Polaris the north star. See: Finding
These are just a few of the many constellations visible this
December 10, 2016 Night Sky Below
a memorable tour with members of the York County Astronomical Society of
Galaxies, planets, the moon and the constellations of the night sky.
and Constellations Astronomical Pronunciation Guide
the Wonders of your Universe
Picture of the Day
Our sun is almost one million miles in diameter and a million earths would fit in it.
It takes light eight minutes to reach us from the sun.
The last star shown in video is VY Canis Majoris which takes light about 5000 years to reach us
that is light traveling at 186,000 miles per second x 60 seconds
in a minute x 60 minutes in an hour x 365 days in a year x 5000 years.
VY Canis Majoris is (almost 2 billion ) 1.7 billion miles in diameter.
POLLUTION OF OUR NIGHT SKIES
What does light pollution look like?
What does your nighttime sky look like? Try this fun interactive game to see how light
pollution affects the stars you see at night:
Dark Sky Association
Weather and Directions