Public Observing January
p.m. to 9:00 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.
YCAS DECEMBER STARWATCH: Our monthly starwatch will be on Saturday December 9th at the John Rudy Park observatory from 7pm to 9pm. We will be starting at the new time, 7pm through the winter months till March when we go back on Day light savings. Come out to look through the telescope at stars, star clusters, nebula, and the
Andromeda galaxy while we laser point in the sky the constellations they reside in. Have some hot chocolate and cookies as we present a screened presentation on Santa's night ride through the sky on the 25th
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 in observatory.
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
Sun on December 9, 2017 is in the constellation Ophiuchus "The
Serpent Holder" setting at 4:41 pm. There are no sunspots.
Click on Moon to
Last Quarter Moon rises at 11:41 pm in the constellation Leo the
Visible for December Public Observing Night
is in the constellation Aquarius and is up after sunset visible in
the southwest at 7.9 magnitude. Neptune sets around 11:19 pm.
is located in Pisces and sets at 3:00 am. It will be high overhead
south at 8:00 pm. at 5.7 magnitude.
may glimpse an early Geminid meteor shower this night. The
shower peaks on December 13-14. Read more at Sky
for 8:00 P.M.
Dipper is low in 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
In the north is the Little Dipper, Cassiopeia "the Queen of
Andromeda "the Princess of
Ethiopia" containing M-31
(the Andromeda Spiral) galaxy. the constellation Pegasus "the
Winged Horse". Perseus
"the Rescuer of Andromeda". Rising in the east are
the constellations Gemini "the Twins" and Orion
"the Hunter". Above Orion is the constellation Taurus
"the Bull". To the left (Northeast) of Taurus is the
constellation Auriga :the Charioteer".
In the south you will find Aquarius "the
Water Carrier" and Cetus "the Whale". These are just a few of the many constellations visible this
night. The Summer circle of stars now are low in the west as the
sun sets and the Winter Circle
sometimes called the Winter Hexagon is rising in the east. The
winter Circle is an asterism, a grouping of bright stars in the winter night.
The Winter Circle, consists of Orion’s bright red star Betelgeuse. Rigel,
in Aldebaran, Capella, in Procyon, in Sirius, and Castor and Pollux
in Gemini. See: Earth
Sky Winter Circle.
December 9, 2017, 2017 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