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Amateur Telescope Makers of Boston

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December Sky

Observing Committee
Sun 4
Full (Cold) Moon at 10:47am EST.
Sun 10 Last Quarter Moon at 2:51am EST
Wed 13 Mercury at inferior conjunction
Wed 13
Thu 14
Geminid Meteor Shower at peak activity tonight (100+/hr possible)
Thu 14 Jupiter and a waning crescent Moon pair up in the morning sky. Look SE before sunrise.
Mon 18 New Moon at 1:30am EST
Thu 21 Winter Solstice at 1:28pm EST
Saturn in conjunction
Thu 21
Fri 22
Ursid Meteors reach peak activity (~10/hr)
Tue 26 First Quarter Moon at 4:20am EST.
Sat 30 Aldebaran occulted by the Moon. Event runs from 6:27 to 7:22pm EST.

Mercury is visible early in the month, low in the SW evening sky after sunset and then, after a December 13 inferior conjunction, reappears in the predawn SE sky toward month’s end. Favorable apparition.

Venus is too close to the rising sun to be well-seen.

Mars rises 3 to 4 hours before the sun and appears high in the SE in the early morning sky.

Jupiter gains altitude in the morning sky, rising 2½ hours before the sun on the 1st and over 4 hours earlier (when it shines near Mars) as the year ends.

Saturn is not visible this month. Conjunction occurs on the 21st.