Astronomers discovered Saturn has an astonishing number moons in 2023

The ringed planet took back the title of most moons in our solar system
Over sixty moons discovered
An impressive feat
145 moons in total
Jupiter was the former moon king
Doubled its moons
A global team of astronomers
Collecting data since 2019
The Canada-France-Hawaii Telescope
Not an easy task
Like playing Dot-to-Dot
Solving the puzzle
The shift and stack technique
The shift and stack technique
Combining the data
Not employed until 2019
Most of the new moons are classified as irregular
The ringed planet took back the title of most moons in our solar system

Saturn recaptured the title of the 'planet with the most moons in our solar system' in 2023 after astronomers revealed the discovery of a surprising number of new moons orbiting the gas giant.

Over sixty moons discovered

An international research team of astronomers announced in May that they had discovered 62 brand new moons around the sixth planet in our solar system according to a press release from the University of British Columbia.

An impressive feat

The discovery of over sixty new moons not only made Saturn the planet with the highest number of orbiting celestial satellites but also the first gas giant to have over 100 moons in our solar system, which is an impressive feat.

145 moons in total

Saturn’s official moon count now stands at a gigantic one-hundred and forty-five celestial bodies, which pushed it past Jupiter’s ninety-five according to The Guardian.

Jupiter was the former moon king

In February 2023, Jupiter stole the title of the planet with the most moons in our solar system after astronomers announced they found 12 new moons orbiting the stormy gas giant.

Doubled its moons

“Saturn not only has nearly doubled its number of moons, it now has more moons than all the rest of the planets in the solar system combined,” said Professor Brett Gladman.

A global team of astronomers

Gladman is an astronomer at the University of British Columbia (UBC) and was part of a global team of astronomers that located Saturn’s new moons between 2019 and 2021. 

Collecting data since 2019

The team was led by Dr. Edward Ashton according to a statement from the University of British Columbia, and along with Mathew Bedouin, he started collecting data in 2019.

The Canada-France-Hawaii Telescope

Ashton and Bedoin were just students when they began and the pair used imaging data from the Canada-France-Hawaii Telescope to plot new objects in the sky around Saturn. 

Not an easy task

However, just discovering new objects wasn’t enough to define the celestial bodies as moons and the team had to track each object over the course of several years in order to reveal their various orbits according to the UBC statement.

Like playing Dot-to-Dot

"Tracking these moons makes me recall playing the kid's game Dot-to-Dot, because we have to connect the various appearances of these moons in our data with a viable orbit,” Dr. Ashton explained

Solving the puzzle

“But with about 100 different games on the same page and you don't know which dot belongs to which puzzle." the now postdoctoral fellow at Taiwan's Academia Sinica Institute of Astronomy and Astrophysics added. 

The shift and stack technique

Harvard University’s Mike Alexandersen and Besançon Observatory’s Jean Marc-Petit were also part of the team that discovered Saturn’s new moons. 

The shift and stack technique

A technique known as shift and stack was used to help discover Saturn's new celestial satellites, and the technique was as interesting as the discovery of the planet's 62 new moons.

Combining the data

According to UBC, the method slowly shifts a set of images at the same rate a potential moon would be moving across the night sky. Once all that data is combined it is stacked together, revealing images of objects in space that were too faint to see before. 

Not employed until 2019

UBC noted that the shift and stack method has been used to discover new moons orbiting Neptune and Uranus, but it had never been employed to locate new satellites around Saturn until Ashton and his team began using it in 2019. 

Most of the new moons are classified as irregular

Most of the 62 newly discovered celestial bodies orbiting Saturn are what astronomers call irregular moons according to UBC, which means they have “large, elliptical, and inclined orbits compared to regular moons.”

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