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 observed on May 10 by researchers with the Mount Lemmon Survey in Tucson, Arizona, one of several programs dedicated to monitoring near-Earth objects, and once detected, it received the official designation 2026JH2 and was classified as part of the Apollo asteroid group, noted for having orbits that intersect Earth’s trajectory around the sun.
NASA’s Jet Propulsion Laboratory estimates that the asteroid will make its closest pass shortly before 6 p.m. Eastern Time. While that distance may appear alarmingly close from a human perspective, astronomers note that such flybys are relatively common within the broader scale of the solar system.
Why specialists conclude there’s no real cause for concern
Planetary scientists have reassured the public that the asteroid presents no threat to Earth, pointing out that it will make a safe flyby. Richard Binzel, a professor at the Massachusetts Institute of Technology and the creator of the Torino Scale used to classify asteroid impact risks, noted that objects of similar size frequently move between Earth and the moon without causing any issues.
According to Binzel, asteroids comparable in size to a car or small bus routinely travel through Earth’s cosmic neighborhood. The main difference today is that advances in detection technology now allow astronomers to observe many of these objects that previously would have gone unnoticed.
At its nearest approach, 2026JH2 will still lie far beyond the orbital heights used by numerous geosynchronous satellites that enable telecommunications, weather prediction, and broadcasting, and researchers emphasize that the object’s path has been carefully evaluated and does not cross Earth’s trajectory.
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.
While the flyby is harmless, the event highlights the crucial role of continuous monitoring in detecting potentially dangerous objects long before they could present any real risk.
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 more precisely determine an object’s dimensions when they obtain infrared data, since this kind of observation captures heat signatures that correlate closely with an object’s actual size. Yet conducting infrared studies from Earth is considerably more challenging, so such measurements are usually absent during the initial detection of near‑Earth objects.
Scientists liken the smallest projected size of 2026JH2 to the meteor that detonated over Chelyabinsk, Russia, in 2013, an incident that sent a shockwave across the region, breaking windows and injuring more than 1,000 people. At the upper limit of current estimates, the asteroid may mirror the object tied to the 1908 Tunguska event in Siberia, which leveled extensive stretches 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.
Monitoring asteroids in the coming years remains crucial
Scientists remain confident that 2026JH2 currently poses no danger, yet experts admit that forecasting an asteroid’s long-term trajectory is inherently difficult, as orbital routes can shift over the years through gravitational pulls from planets and other cosmic objects.
Michel noted that while long-term paths can never be forecast with perfect accuracy, current assessments show that no identified asteroid is expected to pose a significant collision risk in the next century, and planetary defense teams continually monitor thousands of near-Earth objects to detect any possible changes in their trajectories.
The close flyby comes at a moment when planetary radar resources are far more constrained than in earlier years. Jean-Luc Margot, a professor of planetary sciences at the University of California, Los Angeles, noted that the 2020 collapse of the Arecibo Observatory sharply curtailed the scientific community’s radar observation capabilities. Moreover, NASA’s Goldstone radar facility is presently undergoing extensive repairs.
Without radar observations, astronomers encounter increased difficulty when determining the precise form, spin, and path of nearby asteroids, and while optical telescopes offer useful insights, radar systems let scientists construct much more accurate models of an object’s motion and physical characteristics.
Margot noted that astronomers have detected only a limited number of near-Earth asteroids comparable in size to 2026JH2. Since many of these bodies are quite dim and compact, they typically come to light just days before their closest flybys, becoming visible only when their brightness finally reaches the threshold of survey telescopes.
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.
Apophis expected to provide a historic sky event
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 anticipated Apophis flyby is positioned to become one of the most closely monitored asteroid encounters of modern times, and unlike 2026JH2, which will remain out of sight to the naked eye, Apophis is expected to be visible without telescopes from several regions across Europe, Africa, and the Middle East.
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.
