Archive · 22 Aug 2025
Rare Comet Lemmon Approaching Earth: Viewing Opportunity
A comet named C/2025 A6 (Lemmon) is coming close to Earth!
It's been a really long time since it was last here, about 1,396 years ago.
Scientists found it using a big telescope.
The comet will be closest to the sun in November and pass by Earth in October.
Right now, it's getting brighter, so we might be able to see it with a telescope, and maybe even with our eyes if we're far from city lights.
Scientists will keep watching to see how bright it gets, so keep an eye out!
Comet C/2025 A6 (Lemmon) is approaching Earth, last seen in 629 AD.
Discovered on January 3, 2025, by scientists using a telescope in Arizona.
The comet will reach perihelion on November 8, 2025, and pass Earth on October 21.
Comet currently located in Gemini constellation, about 346 million kilometers away.
Brightness is increasing; it may be visible with a small telescope or naked eye in dark areas.
- Who
- Comet C/2025 A6 (Lemmon) was discovered by scientists.
- What
- Comet C/2025 A6 (Lemmon) is approaching Earth.
- When
- It will pass by Earth on October 21, 2025, and reach perihelion on November 8, 2025.
- Where
- The comet is currently in the constellation Gemini.
- Why
- Scientists are observing the comet to study its trajectory and brightness.
Viewpoints on the comet's observability
N/A
Visibility
Viewpoints on the comet's observability
Comet Lemmon's brightness could be sufficient for naked-eye viewing in dark areas.
N/A
Visibility could require a small telescope if the brightness doesn't increase enough.
- Comet Name
- C/2025 A6 (Lemmon)
- Last Visit
- 629 AD
- Discovery Date
- January 3, 2025
- Discovery Location
- Mt. Lemmon, Arizona
- Perihelion Date
- November 8, 2025
- Earth Pass Date
- October 21, 2025
- Orbital Period
- 1,396 years
- Current Distance
- 346,951,344.8 kilometers