When and How to See the Lunar Occultation of Mars in Canada: January 2025's Most Spectacular Event
On January 13, 2025, a rare celestial event will unfold as the Moon passes in front of Mars, briefly obscuring the planet's view from Earth. This phenomenon, known as a lunar occultation, is similar to a solar eclipse but involves the Moon and a planet rather than the Sun. During this event, Mars will appear to disappear behind the Moon’s glowing surface, only to reemerge a few minutes later. The occultation will be visible from much of North America, as well as certain regions in Africa.
*Occultation of Mars; Magnitude: -1.4; Moon phase: 99.97% illumination (Waxing Gibbous)
What is a Lunar Occultation?
A lunar occultation happens when the Moon passes directly between Earth and another celestial body, blocking it from view. The event will only be visible from specific locations on Earth. During the January 2025 event, viewers will see Mars slowly move behind the Moon and then emerge from the other side. The entire process will last anywhere from a few minutes to over an hour, depending on your viewing location.
While lunar occultations involving stars are quite common, those involving planets like Mars are much rarer due to the precise alignment required. Such events are usually visible only from certain regions.
Event Details
The lunar occultation of Mars will occur on January 13, 2025. The specific times for the disappearance and reappearance of Mars vary depending on your location:
*The times are in Universal time (U.T)
The Moon will enter its Waxing Gibbous phase on January 14, 2025, and will be 13.81 days old, with 99.97% illumination.
Viewing Tips
Weather Considerations
Clear skies are crucial for observing this event. Check the weather forecast before heading out, and consider traveling to a dark-sky location if light pollution from urban areas might hinder your view.
Best Practices for Observation
Choose a Dark-Sky Location: While the event will be visible in urban areas, a location far from city lights will significantly improve your experience.
Arrive Early: Set up at least 30 minutes before the event starts to ensure you don’t miss any of the action.
Check Timing: Use a reliable stargazing app to confirm the exact times for your location.
Tools for Observation
Naked Eye: The event can be observed without equipment, although Mars may appear as a small dot.
Binoculars: Binoculars will enhance your view of Mars and the details of the Moon’s surface.
Telescope: For the best viewing experience, a telescope will allow you to see Mars disappearing behind the Moon and reappearing from the other side.
Light Pollution and the Lunar Occultation
Light pollution can significantly impact the visibility of celestial events like the lunar occultation. In urban areas, artificial lighting can wash out the faint light of planets, making it harder to see Mars as it disappears and reappearce behind the Moon. To fully enjoy the event, it's best to head to a location with minimal light pollution, such as a designated dark-sky site or a remote area away from city lights.
We are organizing an overnight trip from Ottawa to one of the darkest skies in Eastern Ontario to observe this spectacular celestial event. You'll have the opportunity to enjoy the lunar occultation in incredible detail through a 16" telescope on-site. Feel free to bring your own equipment and experience the event up close with fellow stargazing enthusiasts. Don't miss this unique chance to witness the rare alignment in a pristine, light-pollution-free location!