For skywatchers in the Northern Hemisphere, February and March offer a unique opportunity to observe Comet C/2024 E1 (Wierzchoś), a newly discovered comet making its closest approach to Earth. Discovered on March 3, 2024, by Polish astronomer Kacper Wierzchoś, this hyperbolic Oort cloud comet reached perihelion – its closest point to the Sun – on January 20, 2026, and is now making its closest approach to Earth.
While not a naked-eye object, Comet Wierzchoś is currently visible through larger binoculars, offering a glimpse of a celestial visitor that won’t return for millennia. The comet’s path brought it to a distance of 94 million miles (151 million kilometers) from Earth on February 17, 2026, a point known as perigee. This close approach, combined with its recent passage near the Sun, has increased its brightness, making it a worthwhile target for amateur astronomers.
Understanding Comet Wierzchoś’s Orbit
C/2024 E1 (Wierzchoś) is characterized by its highly eccentric orbit. According to data from the Zwicky Transient Facility, the comet’s inbound orbital period is estimated to be around 3 million years, while its outbound journey will take approximately 200,000 years. Its perihelion distance is 0.5661 AU (85 million km) [5], and its inclination is 75.238° [2]. This hyperbolic orbit means the comet will not return to the inner solar system after this pass.
As of February 15, 2026, the comet’s apparent magnitude was around 7 [2], making it visible with binoculars. On February 26, 2026, it appeared within half a degree of Comet C/2025 Q3 (ATLAS), with Wierzchoś being significantly brighter at magnitude 9.5 compared to ATLAS’s magnitude 15.1 [3]. This difference in brightness made observing both comets simultaneously challenging, requiring careful observation and potentially imaging techniques.
What Drives the Comet’s Activity?
Cometary emission activity for C/2024 E1 has been driven by carbon dioxide (CO2) [2]. As the comet approaches the Sun, the increased solar radiation causes the frozen gases within the comet’s nucleus to vaporize, creating a coma – a hazy atmosphere around the nucleus – and potentially a tail. The comet crossed the celestial equator on November 17, 2025 [8].
Observing Comet Wierzchoś
While the comet’s peak brightness has passed, it remains a viable target for observation with binoculars or a small telescope. The interactive orbit chart available at astro.vanbuitenen.nl provides a visual representation of the comet’s path through the solar system and its current position [4]. Skywatchers should consult astronomy apps and websites for precise location information and optimal viewing times.
The comet’s discovery site was Mount Lemmon Observatory [2], and the observation arc, as of April 19, 2025, spanned 725 days (1.98 years) with earliest precovery date of February 15, 2024 [2]. The comet’s mean radius is estimated to be between 2 and 10 kilometers [7].
As Comet Wierzchoś continues its journey out of the inner solar system, it will gradually fade from view. This close approach represents a rare opportunity to observe a pristine comet from the Oort cloud, offering valuable insights into the composition and origins of these icy bodies.
The study of comets like Wierzchoś helps astronomers understand the early solar system and the materials from which planets formed. Continued observations, even with modest equipment, contribute to our knowledge of these fascinating celestial objects.
What are your plans for observing Comet Wierzchoś? Share your experiences and images in the comments below!
