A recently discovered asteroid will make a relatively close approach to Earth this Monday, drawing the attention of astronomers and space agencies worldwide. Despite the short cosmic distance, experts emphasize that the object represents no danger to the planet and will safely continue its journey through space.
Astronomers are closely monitoring an asteroid identified as 2026JH2, a rocky object that will pass near Earth at a distance of approximately 91,593 kilometers, or about 56,900 miles. According to calculations from the European Space Agency, the object will travel at roughly one quarter of the average distance between Earth and the moon, making it one of the closest asteroid flybys recorded this year. Even so, scientists insist there is no risk of collision or atmospheric impact.
The asteroid was first detected on May 10 by researchers working with the Mount Lemmon Survey in Tucson, Arizona, one of several programs dedicated to identifying near-Earth objects. After its discovery, the object received the official designation 2026JH2 and was classified as part of the Apollo group of asteroids, a category known for following orbital paths that intersect Earth’s orbit around the sun.
According to NASA’s Jet Propulsion Laboratory, the asteroid is expected to make its closest pass shortly before 6 p.m. Eastern Time, and although this moment may seem alarmingly close from a human perspective, astronomers note that events of this kind happen rather frequently across the vast stretches of the solar system.
Why specialists conclude there’s no real cause for concern
Planetary scientists have assured the public that the asteroid poses no danger to Earth, noting it will pass by safely. Richard Binzel, a professor at the Massachusetts Institute of Technology and the creator of the Torino Scale for categorizing asteroid impact hazards, emphasized that objects of comparable size routinely travel between Earth and the moon without generating any problems.
Binzel observes that car-sized or small-bus-sized asteroids routinely pass through Earth’s cosmic neighborhood, and explains that what sets the present apart is that improved detection systems now enable astronomers to spot many of these bodies that once would have gone unnoticed.
At its closest point, 2026JH2 will still remain significantly farther away than the altitude used by many geosynchronous satellites that support telecommunications, weather forecasting, and broadcasting systems. Scientists stress that the object’s trajectory has been thoroughly analyzed and does not intersect with Earth.
The asteroid originates from the main asteroid belt located between Mars and Jupiter. Researchers explain that collisions among rocks within the belt, combined with the gravitational influence of Jupiter, can occasionally redirect fragments toward the inner solar system. This process has been understood for decades and is responsible for many near-Earth asteroids that astronomers track today.
Although this flyby poses no danger, the event underscores how vital ongoing monitoring efforts are for spotting potentially hazardous objects long before they pose any real threat.
The challenge of determining an asteroid’s exact size
Despite direct observations of 2026JH2, astronomers remain unable to pin down its exact size, with current scientific assessments placing its diameter somewhere between 15 and 30 meters, a range comparable to one or two school buses, yet this approximation stays ambiguous because telescopes that operate in visible light only register the object’s brightness.
Patrick Michel, an astrophysicist and research director at France’s National Centre for Scientific Research, noted that an asteroid’s luminosity offers no straightforward indication of its dimensions, since a sizable but dark body might look dim, while a smaller, highly reflective one can easily appear more radiant.
Astronomers can gauge an object’s dimensions with greater accuracy when they gather infrared observations, because this type of data records heat signatures that align closely with the object’s true scale. However, carrying out infrared measurements from Earth is far more difficult, which means these readings are typically missing during the early identification of near‑Earth objects.
Scientists compare the lower end of 2026JH2’s estimated size range to the meteor that exploded over Chelyabinsk, Russia, in 2013. That event generated a shockwave that shattered windows and injured more than 1,000 people. At the higher end of the estimate, the asteroid could resemble the object associated with the 1908 Tunguska event in Siberia, which flattened vast areas of forest.
Researchers emphasize, however, that those comparisons are purely related to size and not to danger. Unlike those historic incidents, 2026JH2 will not enter Earth’s atmosphere. Its path keeps it safely distant from the planet, eliminating the possibility of an atmospheric explosion or surface impact.
Tracking asteroids in the years ahead continues to be vital
Although scientists are confident that 2026JH2 poses no current threat, experts acknowledge that predicting the long-term movement of asteroids remains a complex challenge. Orbital paths can gradually change over time due to gravitational interactions with planets and other celestial bodies.
Michel noted that while future trajectories can never be forecast with complete certainty indefinitely, no known asteroid currently presents a significant collision risk within the next century based on existing calculations. Planetary defense programs continue to monitor thousands of near-Earth objects to detect any future changes in their paths.
The close flyby also arrives at a time when planetary radar capabilities are more limited than in previous years. Jean-Luc Margot, a professor of planetary sciences at the University of California, Los Angeles, pointed out that the collapse of the Arecibo Observatory in 2020 significantly reduced the scientific community’s radar observation capacity. In addition, NASA’s Goldstone radar facility is currently undergoing major repairs.
Without radar data, astronomers face greater challenges in pinpointing the exact shape, rotation, and trajectory of nearby asteroids, and although optical telescopes provide valuable information, radar instruments allow scientists to develop far more precise representations of an object’s movement and physical properties.
Margot explained that only a small fraction of near-Earth asteroids similar in size to 2026JH2 have been identified so far. Because many of these objects are relatively dark and small, they are often discovered only days before their closest approaches, once they become bright enough for survey telescopes to detect.
Space agencies and scientific organizations, compelled by this limitation, have expanded their funding for asteroid detection and tracking programs, and upcoming observatories together with more sophisticated sky surveys are expected to significantly elevate discovery rates in the next few years, giving researchers the means to assemble a far more thorough inventory of nearby objects.
A historic celestial display is anticipated from Apophis
As 2026JH2 gains notice for its near approach, astronomers are turning their focus to an even more extraordinary event set for 2029, when a much larger asteroid called Apophis is projected to sweep past Earth at an even closer distance on April 13 of that year.
Scientists estimate that Apophis will pass roughly 32,000 kilometers from Earth, placing it closer than some satellites that circle the planet, and although this approach is remarkably near, astronomers stress that it presents no threat and regard it instead as an exceptional scientific opportunity.
The flyby of Apophis is expected to become one of the most closely observed asteroid encounters in modern history. Unlike 2026JH2, which will remain invisible to the naked eye, Apophis should be visible from parts of Europe, Africa, and the Middle East without the aid of telescopes.
Events like these provide researchers with vital opportunities to study an asteroid’s makeup, trajectory, and internal characteristics, helping to push planetary defense efforts forward, and each close approach broadens scientific understanding of how such objects behave and how humanity could respond if one ever posed a genuine threat.
For now, astronomers explain that the arrival of 2026JH2 chiefly underscores the constant shifts in Earth’s cosmic surroundings, where small asteroids routinely move through the solar system, and advancing technology enables scientists to spot them well before any close encounter occurs.
A live broadcast of the asteroid’s arrival is expected to be shown by the Virtual Telescope Project via its observatories in Italy, giving astronomy fans worldwide the chance to watch the moment as it unfolds in real time. Even though the asteroid will be far too faint for most viewers to spot on their own, the close pass continues to spark public fascination with the countless objects that quietly move through the region of space surrounding Earth.
