An “opposition” happens on the day that Earth and an outer planet line up on the same side of the Sun. For Earth observers, a planet in opposition will rise when the Sun sets and will be in the sky all night. Around the time of opposition, the planet is brightest, practically fully illuminated, and displays the largest angular diameter for the year. Right before, during, and after opposition are prime-time for viewing and imaging a planet!
Amateur and large observatory scopes can do best when imaging planets at opposition. It was just announced this summer that amateur astronomer Kai Ly discovered an unknown moon of Jupiter while examining opposition images taken with the 3.6-meter Canada-France-Hawaii Telescope at Mauna Kea Observatory in Hawaii. This news comes just in time to take some confirmation images as Jupiter opposition season is upon us now!
The Jupiter and Saturn “Great Conjunction” was well-publicized and well-imaged. Even though the closest approach between the planets was Monday, they’re still in the vicinity and worth a look tonight! This gallery contains some of the best images of the event we found on-line, acquired with Tele Vue products.
On December 16th, Jupiter and Saturn will be a full-Moon’s width apart at dusk as they sink into the south-western horizon. Watch this pair each evening as they draw ever-closer together until they pass within 1/10 of a degree on December 21st. This is the great Jupiter / Saturn Conjunction of 2020! This is the closest they’ve been together since 1623 and most sources say that conjunction was not observed due to the planet’s vicinity to the Sun. The last time the pair was definitely visible this close together was in 1226 in the morning sky. This is a rare “must-see” event indeed!
Is it just us or did it seem that 2020 was a longer than usual year? Yet while both the year and big Mars Opposition are waning, we can still look forward to some astronomical sights and surprises in the “20/20” sky. We list them in this week’s blog.
Saturn is in opposition tonight: it glides above the horizon around sunset and will be over 18-arc-seconds in diameter for a few weeks. At about magnitude 0.0, it will pair well with the full moon that accompanies it across the sky this evening.
Saturn will be visible all night in the sky on the 15th as it rises when the sun sets (hence it is opposite the sun). Now is a good time to revisit an essay I wrote a while back about this visually appealing planet.
I’ve found that first-time views of Saturn through a telescope typically elicit gasps of delight followed by inquisitive questioning.
Saturn’s startling beauty can open the door to wonders and knowledge about the universe that can inspire a love and appreciation of all the arts, sciences, and history.
Understanding something of the vastness and nature of the universe and our unique position as the only species possessing such knowledge suggests we commit to fostering the best in us: love, kindness, respect for learning and for all the amazing life-forms we’re so fortunate to share on this wonderful planet.
So let’s use Saturn as a means to enrich our future and help preserve our earthly paradise.
Spread the word to change Saturday to Saturnday through all media and contacts, in every social venue, to start dialogues that can open the minds and hearts of our earthling friends. Caring for our precious planet and it’s lucky inhabitants, will make future generations proud of our time here.
Privacy & Cookies Policy
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.