C/2026 A1 (MAPS): Will We See a Naked-Eye Comet in April 2026?

~14 min
Topics:Small BodiesSkywatching
Comet C/2026 A1: Will Comet MAPS become the next bright comet 2026?
©Vito Technology

A rare sungrazing comet is heading our way — and the countdown is already on. In just a couple of weeks, comet C/2026 A1 (MAPS) will skim incredibly close to the Sun, setting up a true all-or-nothing moment: it could flare into one of the year’s brightest comets, possibly visible to the naked eye — maybe even in daylight — or it could fall apart in the Sun’s intense heat. Read on to learn when it’s best to see comet C/2026 A1 (MAPS), and follow its journey with the Star Walk 2 app.

Contents

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, ~0.96 AU
  • Predicted peak brightness: ~mag -6 (naked-eye visibility)*
  • Best visible from: Southern Hemisphere

*Optimistic estimate. Comet brightness is notoriously hard to predict, especially for sungrazers.

Comet C/2026 A1 (MAPS) Right Now: March 24, 2026

  • Distance to the Sun: 0.55 AU
  • Distance to Earth: 1.17 AU
  • Elongation: 28.0°
  • Constellation: Cetus
  • Current brightness: mag 8.6 (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 18: Comet MAPS May Be Heading for a “Headless Wonder” Finale

New estimates based on JWST observations suggest that comet C/2026 A1 (MAPS) has a nucleus about 0.4 km across. Its size is comparable to Comet Lovejoy (C/2011 W3), with a nucleus of about 0.5 km, and Comet C/2024 S1 (ATLAS), about 0.6 km. This is larger than earlier estimates and bigger than the small Kreutz fragments often seen in coronagraph images, but still likely below the size needed to survive a close approach to the Sun.

For observers, Lovejoy is the more hopeful comparison. Its nucleus started to break apart during or shortly after perihelion, yet the comet still kept a spectacular tail for days — becoming the kind of object often called a “headless wonder.” If MAPS behaves in a similar way, it may still deliver a dramatic final display even as the nucleus falls apart. But there is also a less hopeful precedent: C/2024 S1 (ATLAS) broke up too early and faded before it could turn into a real spectacle.

In short, C/2026 A1 (MAPS) will most likely perish. That leaves us with the most exciting question: what kind of ending will comet MAPS have? A disappointing fade-out like ATLAS, or a bright and unforgettable “headless wonder” like Lovejoy? We know which one we’re hoping for.

Rumors are now swirling online that comet C/2026 A1 (MAPS) might somehow be related to the famous interstellar comet 3I/ATLAS — the object that caused a huge stir last year, including speculation about a possible artificial origin. Harvard astronomer Avi Loeb, one of the most vocal commentators on 3I/ATLAS, has addressed this idea directly in a new blog post.

His verdict: probably not. Despite the speculation, Loeb says MAPS is unlikely to be a fragment of 3I/ATLAS, pointing to major differences in their orbits. But the very fact that such theories are appearing at all says a lot about how much attention MAPS is attracting.

March 15: Comet C/2026 A1 (MAPS) continues to brighten steadily — a good sign

Comet C/2026 A1 (MAPS) shows off its green coma and tail
One of the recent images of Comet C/2026 A1 (MAPS) by Gerald Rhemann and Michael Jäger, showing a bright green coma and a long, narrow tail stretching across the background stars. The image highlights the comet’s growing activity as it moves closer to the Sun and continues to brighten ahead of its dramatic perihelion in early April. The green glow is a common comet feature, produced mainly by fluorescence of carbon molecules released from the nucleus as it warms up.
©Michael JägerGerald Rhemann

Comet C/2026 A1 (MAPS) is still behaving in an encouraging way. Its current brightness shows that it is likely a mid-sized Kreutz sungrazer: clearly brighter than Comet Lovejoy (2011) was at a similar stage, but still well behind Comet Ikeya–Seki (1965).

The encouraging sign is that it has been brightening steadily, which suggests that the nucleus is still holding together. The recent slowdown in brightening is not unusual and does not mean the comet is in trouble. Still, the big question remains unanswered: will it survive perihelion on April 4? For sungrazers, that is always uncertain. If MAPS makes it through its close pass by the Sun, the best-case scenario is still very exciting — it could briefly become a bright daylight comet, reaching about magnitude −5 to −10.

March 12: Comet C/2026 A1 (MAPS) passes close to galaxies NGC 942 and NGC 945

On March 12, Comet C/2026 A1 (MAPS) will pass within 20 arcminutes of the 11th–12th magnitude galaxies NGC 942 and NGC 945 located in the constellation Cetus. The comet and the galaxies should remain in the same area of the sky for a couple of days.

For astrophotographers, this alignment offers a rare opportunity to capture a Solar System object together with distant deep-sky galaxies in the same frame. A small telescope or a telephoto lens can help include both galaxies and the comet’s diffuse coma in one field of view, creating an interesting contrast between the faint, compact light of the galaxies and the soft glow of the comet. Because the galaxies are relatively faint, darker skies and longer exposures will significantly improve the result.

March 4: Light-curve comparison puts Comet MAPS between Great Comets Ikeya–Seki and Lovejoy

New comparison charts of Kreutz sungrazer brightness curves suggest comet C/2026 A1 (MAPS) is likely a mid-sized Kreutz comet — fainter than legendary Ikeya–Seki (1965) at a similar stage, but brighter than comet Lovejoy (2011). Its steady, smooth brightening is a good sign that the nucleus is still holding together.

Does this mean it will be naked-eye in April? It’s still not guaranteed, but these trends keep the best-case scenario firmly on the table: if MAPS survives its extremely close solar pass in early April, it could brighten rapidly and become visible without a telescope for a short time — possibly even in bright twilight. The final outcome depends on how the comet handles perihelion, where many sungrazers either shine spectacularly or break apart.

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.

What Are Comets
All-round guide about comets: definition, special features, and a couple of tips for aspiring observers.
See 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.

Comet Lovejoy
Comet Lovejoy seen in the sky near Santiago, Chile.
©Yuri Beletsky
  • 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.

C/2026 A1 comet location in the sky: when is the comet visible
The path of comet C/2026 A1 through the constellations in March-April 2026.
©Vito Technology

Because of its orbit, C/2026 A1 is rather faint in 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 evening twilight.

C/2026 A1 (MAPS) comet brightness curve
Forecast brightness curve for Comet C/2026 A1 (MAPS): it remains faint in March, with the most dramatic brightening expected around its early-April solar pass.
©Vito Technology

Comet C/2026 A1 in March 2026: Telescopic Target

  • 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.

  • 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

  • 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 -6). Under favorable conditions, this could allow observations in bright twilight or, in extreme cases, near the Sun.

  • 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 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

Сomet C/2026 A1 orbit: comet location in space
Visualization of the orbit of comet C/2026 A1.
©Vito Technology

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 (MAPS): Frequently Asked Questions

Is Comet C/2026 A1 (MAPS) visible right now?

Yes. Right now, the comet is still a faint target (~ mag 9), so you’ll need a telescope and dark skies. It also doesn’t have an obvious tail yet, and looks more like a small, diffuse glow.

Will Comet C/2026 A1 (MAPS) be visible to the naked eye?

Possibly. If the comet survives its extremely close pass by the Sun on April 4, it could brighten fast and become visible without optics for a short time. However, it could also break apart without putting on a big sky show.

When is the best time to observe Comet C/2026 A1 (MAPS)?

March is best for safe tracking with a telescope, while the most exciting (and most uncertain) phase is early April around perihelion. If the comet survives, the days after perihelion may offer the best chance to see it in twilight. For safety, never sweep the sky near the Sun with binoculars or a telescope — accidental solar exposure can cause permanent eye damage.

Where should I look for Comet C/2026 A1 (MAPS) in the sky?

In March, the comet stays in southern constellations and shifts from Eridanus into Cetus, heading toward Pisces as it approaches perihelion. If it survives its perihelion on April 4, it is expected to move toward Taurus and then farther along its path.

Where Comet C/2026 A1 (MAPS) is best visible?

The Southern Hemisphere is favored because the comet’s path and orbit geometry tend to place it higher above the horizon there during key dates. Northern observers may still get chances, but observation windows can be shorter, and the comet may sit lower in bright twilight. For the best view, choose a site with a clear, unobstructed horizon — an open field, a hilltop, or a seashore — and get away from city lights whenever possible.

What equipment do I need to see Comet C/2026 A1 (MAPS)?

A small telescope is the most reliable option during March. Binoculars may help later if the comet brightens, but comets are diffuse and can be harder to see compared to stars of the same listed magnitude. As C/2026 A1 approaches the Sun in the sky, be more careful and never point optical devices at the Sun – it can cause permanent eye damage.

Why do predictions for Comet C/2026 A1 (MAPS) change so often?

Sungrazing comets can change rapidly as they heat up: they may brighten, fragment, flare, or fade with little warning. That’s why estimates get revised frequently as new observations come in.

Will Comet C/2026 A1 (MAPS) hit the Sun?

No. Comet C/2026 A1 (MAPS) is expected to pass extremely close to the Sun, but not collide with it. Current orbit calculations show that at perihelion on April 4, 2026, it will pass at a distance of about 0.0057 AU from the Sun’s center — roughly 160,000–170,000 km above the Sun’s visible surface. However, because it is a sungrazer, the comet could still fragment or completely disintegrate under the Sun’s intense heat and tidal forces.

Will Comet C/2026 A1 (MAPS) hit Earth?

No. Comet C/2026 A1 (MAPS) poses no threat to Earth. Its closest approach to our planet is expected on April 5, 2026, when it will still be about 0.96 AU away — roughly 144 million km (89 million miles). That is far too distant for any impact 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).

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Place your bets: which comet will be best in April — MAPS or PanSTARRS?

MAPS vs PanSTARRS
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