I'm resending information about tomorrow's Jupiter and Saturn planetary
conjunction because a good percentage of our email list didn't receive
last week's note in a timely manner. Also, I'm sharing some photos Mojo
and I took using our cell phones on the 16th, 17 and 19th. Check out the
views tonight, and also after Monday, and let us know what you see!
I love this description of conjunctions from NASA Astronomer Henry
Throop in this article
https://www.nasa.gov/feature/the-great-conjunction-of-jupiter-and-saturn
“You can imagine the solar system to be a racetrack, with each of the
planets as a runner in their own lane and the Earth toward the center of
the stadium,” said Henry Throop, astronomer in the Planetary Science
Division at NASA Headquarters in Washington. “From our vantage point,
we’ll be able to be to see Jupiter on the inside lane, approaching
Saturn all month and finally overtaking it on December 21.
"The planets regularly appear to pass each other in the solar system,
with the positions of Jupiter and Saturn being aligned in the sky about
once every 20 years." He goes on to remind us of Galileo's views of
Jupiter's 1623 conjunction. The whole article is worth a read!!
For those who would like to see this phenomenon for themselves, here’s
what to do (also copied from the NASA article):
* Find a spot with an unobstructed view of the sky, such as a field or
park. Jupiter and Saturn are bright, so they can be seen even from
most cities.
* An hour after sunset, look to the southwestern sky. Jupiter will
look like a bright star and be easily visible. Saturn will be
slightly fainter and will appear slightly above and to the left of
Jupiter until December 21, when Jupiter will overtake it and they
will reverse positions in the sky.
* The planets can be seen with the unaided eye, but if you have
binoculars or a small telescope, you may be able to see Jupiter’s
four large moons orbiting the giant planet. (Jane's note: steady
your binoculars against a pole or wall for stability.)
Here are a few snaps from our driveway in Monrovia over the past few
nights, taken shortly after sunset. On the 16th, the moon is below the
planets, on the 17th above, and on the 19th the moon is too high in the
sky for a photo. I took the first two cell phone photos, and Mojo took
last night's photo.
Moon, Saturn, Jupiter Dec 16, 2020
Moon, Jupiter, Saturn Dec 17, 2020
Jupiter, Saturn Dec 19, 2020
--
Jane Houston Jones, retired JPLer
*:-.,_,.-:*'``'*:-.,_,.-:
Twitter: @jhjones @otastro Instagram @janehoustonjones
http://www.otastro.org/
Astronomy, travel, music, food, cats
Hi stargazers! There has been plenty of publicity about the December
Gemind meteor shower, but we haven't really wanted to promote public
get-togethers for stargazing. You may still be able to see some for the
next few days, as this shower is active from Dec 1 through the 22nd.
We're a few days past the peak of Dec 13/14, but if you want to get up
and look outside from your darkest corner, between 11 p.m. and 4 a.m.
you may get lucky!
The International Meteor Organization publishes a great weekly and
monthly wrap-up of meteor activity. You can bookmark here
https://www.imo.net/viewing-the-geminid-meteor-shower-in-2020/
No doubt you have been watching the great planets Jupiter and Saturn in
the night sky. I like this write-up from Astronomy Magazine:
https://astronomy.com/news/2020/12/jupiter-and-saturn-will-form-rare-christ….
Keep looking low in the southwest sky an hour after sunset. December21
is the closest of conjunction, and both this article and NASA's What's
Up video shows where to look and what's up with that! I'm sure you've
been watching the pair get closer to one another over the last several
months! https://youtu.be/NEVCDhEyKx0
One fun at-home stargazing project is sketching the moon. I've been
sketching and writing about lunar observing for over 30 years. My first
lunar writeup, for the Sidewalk Astronomers newsletter was called "A day
in the life of the moon". It features whimsical lunar phase drawings
made by my mom Barbara Miller, now 90 and still drawing and painting!
http://photo.whiteoaks.com/2009-galileo&me/slides/moonwriteup004.html
For your armchair enjoyment, here is my 2009 sketching series honoring
the 400th anniversary of Galileo's own first telescopic sketches in
1609. I used a small small refractor of a similar aperture to Galileo's
own 1609 telescope, but with 20th century optics. My series of sketches
recreate Galileo's own sketches of sunspots, stars and clusters (like
the Pleiades and Orion's Trapezium stars), planets and their moons (the
famous Galilean satellites of Jupiter) and moon phases. Galileo even
sketched Jupiter and unknown-at-the-time Neptune, and I sketched them
both, too. Scroll
http://jane.whiteoaks.com/2009/05/25/chasing-galileo-sketches-through-a-sma….
I used the same small 3" x 5" (or occasionally 5" x 8" spiral bound
Strathmore sketch pads and Faber Castell blacklead pencils I used to
start this hobby decades ago. If you decide to try sketching, send me
some of your examples. Over and out!
Jane
--
Jane Houston Jones, retired JPLer
*:-.,_,.-:*'``'*:-.,_,.-:
Twitter: @jhjones @otastro Instagram @janehoustonjones
http://www.otastro.org/
Astronomy, travel, music, food, cats