Comet MAPS Approaching Earth: Will It Become Visible to the Naked Eye in April 2026?
A newly discovered comet C/2026 A1 is racing toward the inner Solar System. It will pass extremely close to the Sun in early April, and if it survives, it could become visible to the naked eye — possibly even in daylight. Read on to learn everything known so far, and follow its journey with the Star Walk 2 app.
Contents
- Comet C/2026 A1 (MAPS) At a Glance
- Comet C/2026 A1 (MAPS): Latest News
- What is Comet C/2026 A1 (MAPS)?
- Will C/2026 A1 Become the Next Great Comet?
- When and Where to See Comet C/2026 A1?
- Comet C/2026 A1: Orbit and Trajectory
- Comet C/2026 A1: Discovery
- Potentially Naked-Eye Comet C/2026 A1: Summary
Comet C/2026 A1 (MAPS) At a Glance
- Type: Kreutz sungrazer
- Orbital period: 1892 years (NASA JPL); 1923 years (COBS) – both unusually long for a Kreutz sungrazer
- Perihelion: April 4, 2026, 14:20 UTC/GMT (~0.0057 AU)
- Closest approach to Earth: April 5, 2026, ~0.56 AU
- Predicted peak brightness: ~mag -30 (naked-eye visibility; brighter than Venus, rivals the Full Moon)*
- Best visible from: Southern Hemisphere
*Optimistic estimate. Comet brightness is notoriously hard to predict, especially for sungrazers.
Comet C/2026 A1 (MAPS) Right Now
- Distance to the Sun: 1.26 AU
- Distance to Earth: 1.11 AU
- Elongation: 57.7°
- Constellation: Eridanus
- Current brightness: mag 12.0 (requires a small telescope — roughly ~80–150 mm)
Want the latest on the comet’s visibility? Star Walk 2 updates comet data frequently and shows exactly where it is in the sky above you — with an interactive sky map (and AR mode) to help you point your phone and find it fast.
Comet C/2026 A1 (MAPS): Latest News
March 3: brightness estimates for comet C/2026 A1 (MAPS) have jumped to eye-popping numbers
Fresh model updates have pushed Comet C/2026 A1 (MAPS) to much more extreme peak-brightness numbers. The Astro.vanbuitenen tracker now shows a theoretical perihelion brightness around magnitude −34 (up from earlier ~−10). COBS-based parameters currently point to an even more dramatic “best-case” estimate, with the perihelion extrapolation dropping past magnitude −40.
To put that in perspective: magnitude −40 would be about 100 billion times brighter than the Full Moon. However, these figures come from models/parameter fits, and for sungrazers they can change fast (and don’t guarantee easy visibility from Earth).
What is Comet C/2026 A1 (MAPS)?
C/2026 A1 is a rare type of comet called a sungrazer — it passes extremely close to the Sun. It belongs to the Kreutz family and is believed to be fragments of a much larger comet that broke apart long ago. Kreutz sungrazers are often destroyed by the Sun’s heat, but if comet MAPS survives, it could become exceptionally bright and develop a spectacular tail.
Comets come in many forms, not just sungrazers like C/2026 A1. They differ in their orbits, origins, and behavior. For a quick and easy way to learn the basics about comets, check out our comet infographic.
Will C/2026 A1 Become the Next Great Comet?
C/2026 A1 belongs to the Kreutz sungrazer family, famous for some of the brightest comets in history, such as Comet Ikeya–Seki (1965) and Comet Lovejoy (2011). These comets pass extremely close to the Sun, and if they survive, they can brighten dramatically and grow long, striking tails in a very short time.
- In the best-case scenario, the comet could surge in brightness near perihelion in early April 2026, emerging as a naked-eye sungrazer and one of the most striking comets of the year, comparable to Comet Lovejoy.
- At the same time, sungrazers are famously unpredictable. The comet’s close encounter with the Sun may prove too intense, causing it to break apart before reaching peak brightness.
Both outcomes are possible — which is exactly why this comet is drawing so much attention. With that in mind, here’s what observers might expect as the comet approaches the Sun.
When and Where to See Comet C/2026 A1?
In March 2026, Comet C/2026 A1 (MAPS) moves across the southern sky: it starts the month in Eridanus, then crosses into Cetus and remains there through at least late March. As it heads toward its extremely close solar encounter in early April, it shifts into Pisces. If the comet survives perihelion, it sweeps into Taurus in mid-April and later continues toward Orion by late May.
Because of its orbit, C/2026 A1 will remain faint until March, but could brighten rapidly leading up to its solar encounter in early April. If it survives, observers in the Southern Hemisphere will get the best views in mid to late April, especially during morning twilight.
Comet C/2026 A1 in March 2026: Telescopic Target
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In early March, the comet is still faint (around mag ~12), so it’s primarily a small-telescope object, not a casual binocular target. Under dark skies, observers from both hemispheres have chances to catch it in the evening, as it stays in the sky for about three hours after sunset.
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Through mid- to late March, it should brighten gradually (around mag 6), but keep in mind that comets are diffuse — even if the “number” suggests binocular range, it may still look faint. Also, the observing window will get shorter each day as the comet will be getting closer to the Sun.
For best results, plan observations during the darkest nights around the New Moon on March 19, when moonlight won’t wash out the comet’s low-contrast glow. March is also the best time to follow the comet safely away from the Sun, build observing experience, and watch how its brightness trend develops.
Comet C/2026 A1 in April 2026: Peak Brightness
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April 4–5: This is the comet’s closest approach to the Sun, when it passes just above the solar surface. Models suggest that intense solar heating could cause a dramatic surge in brightness, potentially reaching extreme magnitudes (up to magnitude -30). Under favorable conditions, this could allow observations in bright twilight or, in extreme cases, near the Sun.
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April 6–15: If the comet survives perihelion, it could reappear in the evening sky, rapidly brightening over just a few days. During this window, the comet may become visible to the naked eye, and under favorable conditions, it could even be spotted in daylight near the Sun. Observers in the Southern Hemisphere are likely to have the best views, especially during morning twilight. At northern latitudes, visibility may be brief and challenging, with the comet appearing low on the horizon during civil twilight, allowing only short observing windows.
Moon phase also matters: skywatchers should plan around the New Moon on April 17, which will provide darker skies. Avoid the days near the Full Moon on May 1, when moonlight may wash out the comet’s faint structures. For convenient planning, check the Moon phase calendar on our website.
The timing of the comet’s best visibility is not a coincidence — it’s shaped by its unusual path through the Solar System. Read on to explore the details of its orbit.
Comet C/2026 A1: Orbit and Trajectory
Unlike the planets, which all move around the Sun in the same direction, comet C/2026 A1 travels the opposite way on a sharply tilted path (about 144.5°). Like typical Kreutz comets, it follows a long, stretched path that brings it extremely close to the Sun, where it will face a dramatic and risky encounter.
- At its closest approach to the Sun on April 4, 2026, the comet will pass about 170,000 km (105,600 miles) above the Sun’s surface. At that moment, it will be almost impossible to see from Earth because it will be lost in the Sun’s glare — primarily solar observatories like SOHO or STEREO may be able to spot it. If the comet survives this close encounter, it could later return to the morning sky with a spectacular tail stretching across the horizon.
- Despite its dramatic solar encounter, the comet will not come close to Earth. At its nearest approach on April 5, 2026, it is expected to remain more than 83,000,000 km (51,500,000 miles) away, meaning it poses no risk.
Comet C/2026 A1: Discovery
C/2026 A1 (MAPS) was first spotted on January 13, 2026, by a team of four astronomers: Alain Maury, Georges Attard, Daniel Parrott, and Florian Signoret, using robotic telescopes in Chile as part of the MAPS (Maury/Attard/Parrott/Signoret) program. The discovery images showed a fuzzy, tailed object, classic signs of a comet. Follow-up observations confirmed the cometary nature of the object, and the Minor Planet Center moved it to the Comet Confirmation Page within days.
Why is the comet called C/2026 A1 (MAPS)?
The name follows the standard naming convention for comets:
- C/ — Indicates a non-periodic comet (typically with orbital periods longer than 200 years or on open trajectories).
- 2026 — The year the comet was discovered.
- A1 — The first half-month of January is labeled "A", and this was the first comet discovered during that period.
- (MAPS) — Acknowledges the discovery team’s survey program: Maury/Attard/Parrott/Signoret, which detected the comet using telescopes in Chile.
Before receiving its formal name, the comet was cataloged under the temporary internal code 6AC4721, which was an internal provisional identifier used prior to formal designation.
MAPS program
The MAPS program (Maury, Attard, Parrott, Signoret) is an independent project dedicated to discovering near-Earth asteroids using the synthetic tracking technique.
All four are amateur astronomers. Alain Maury previously worked as an engineer at major observatories, including the Côte d’Azur Observatory, Mount Palomar Observatory in California, and La Silla Observatory, before founding his own observatory in San Pedro de Atacama, Chile. Georges Attard, Florian Signoret, and Daniel Parrott have professional backgrounds in computer science, which contributed to the development of the project’s high-performance software. Attard, Signoret, and Maury are members of GAPRA (Groupement d’Astronomie Populaire de la Région d’Antibes). Parrott is also the author of the Tycho Tracker software and a co-inventor of the synthetic tracking technique.
We sincerely thank Florian Signoret for reaching out to us and kindly pointing out the inaccuracies in the article. We also encourage readers to explore Alain Maury’s blog post about the discovery of the comet for a firsthand account of this remarkable event.
Why Is Comet C/2026 A1 Special?
C/2026 A1 has drawn early excitement because:
- It’s a large Kreutz comet, possibly the most prominent Kreutz comet since Lovejoy (2011)
- It was discovered unusually early for a sungrazer — at about 2 AU from the Sun, whereas most sungrazing comets are first detected only when they are much closer, often within 0.1–0.3 AU.
- Its path and brightness may rival great comets of the past (e.g., Ikeya-Seki, 1965).
- Its orbital period (about 1900 years ) is unusually long for a Kreutz sungrazer. Most Kreutz comets are tiny and short-lived, so seeing a larger one with a well-defined long-period orbit is uncommon.
If it survives the solar plunge, it may develop a daylight-visible coma and multi-million-km dust tail, which is rare even among bright comets.
If C/2026 A1 survives its close encounter with the Sun, it could join the small and informal group of comets often referred to as “great comets” — objects that become exceptionally bright, develop enormous tails, and leave a lasting mark in astronomical history. What exactly makes a comet “great,” and how do astronomers decide which comets earn that unofficial title? To learn how great comets are defined — and to revisit the most famous examples — read our article on great comets.
Why Is Comet C/2026 A1 Important For Science?
Comets like C/2026 A1 offer a glimpse into the early Solar System. Being relatively pristine, they preserve materials from the system’s formation. Its extremely close perihelion also provides a unique opportunity to study how intense solar heating affects volatile-rich bodies. Additionally, its orbital parameters may help refine models of the Kreutz family’s fragmentation history, possibly tracing its ancestry back to a single massive progenitor that broke up a millennium ago.
Potentially Naked-Eye Comet C/2026 A1: Summary
Throughout March, comet C/2026 A1 (MAPS) is a faint telescopic target. The comet’s biggest moment is expected in early April, when it dives extremely close to the Sun and could brighten dramatically in a matter of days. If it survives that scorching encounter, it may return soon after perihelion as a short-window twilight comet, potentially visible to the naked eye — with the Southern Hemisphere most likely getting the best view. We’ll keep updating this page as new observations come in. Track the comet with Star Walk 2, mark your calendar for early April, and stay tuned: the coming months could bring a sky show to remember.
Comets Visible Tonight: What to See Until April 2026
While we wait to see whether the newly-discovered sungrazing comet lives up to expectations, check our article about other comets you can observe right now. Several comets are currently visible with binoculars or small telescopes, depending on your location and sky conditions. They may not be headline-makers, but they’re great targets for practice — and a good way to get ready for a potential naked-eye comet later this year.
One More Bright Comet In April 2026: C/2025 R3 (PanSTARRS)
Comet MAPS’ April performance is still a big question mark — sungrazers can either put on a stunning show or fall apart. If you’d like a more predictable April target, C/2025 R3 (Pan-STARRS) is a comet that has been tracked for months and is also expected to brighten significantly, possibly becoming visible to the naked eye. To learn what makes this comet special and how best to observe it, take a look at our separate article on C/2025 R3 (Pan-STARRS).
