A newly identified asteroid is set to pass relatively near Earth this Monday, drawing interest from astronomers and space agencies around the globe. Although the cosmic gap is small, specialists highlight that the object poses no threat to the planet and will move along its course safely 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.
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 experts say there is no reason for concern
Planetary scientists have reassured the public that the asteroid will safely miss Earth. Richard Binzel, a professor at the Massachusetts Institute of Technology and creator of the Torino Scale used to classify asteroid impact risks, explained that objects of similar size frequently pass between Earth and the moon without causing any issues.
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 pass, 2026JH2 will remain well beyond the altitude range where numerous geosynchronous satellites operate to support telecommunications, weather forecasting, and broadcasting, and specialists highlight that the object’s trajectory has been rigorously examined and does not intersect Earth’s orbit.
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 difficulty in pinpointing an asteroid’s precise dimensions
Despite direct observations of 2026JH2, astronomers still cannot determine its precise dimensions. Scientists estimate that the object measures somewhere between 15 and 30 meters in diameter, roughly equivalent to the size of one or two school buses. However, that estimate remains uncertain because telescopes observing in visible light only capture how bright the object appears.
Patrick Michel, an astrophysicist and research director at France’s National Centre for Scientific Research, explained that an asteroid’s brightness does not directly reveal its size. A darker object may appear faint even if it is relatively large, while a smaller but highly reflective asteroid could seem brighter.
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.
Tracking asteroids in the years ahead continues to be vital
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 observed that although long-term trajectories can never be predicted with absolute certainty, current analyses indicate that no known asteroid poses a meaningful impact threat within the next hundred years. Planetary defense teams persistently track thousands of near-Earth objects to identify any potential shifts in their orbits.
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.
A remarkable celestial spectacle is expected to unfold with the approach of Apophis
While 2026JH2 is drawing attention because of its proximity, astronomers are already preparing for a much more remarkable event scheduled for 2029. An asteroid known as Apophis, considerably larger than 2026JH2, is expected to pass even closer to Earth on April 13 of that year.
Scientists predict that Apophis will sweep past Earth at about 32,000 kilometers, bringing it nearer than certain orbiting satellites, and while this flyby is strikingly close, astronomers emphasize that it poses no danger and view it instead as a rare chance for scientific study.
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 give researchers crucial chances to examine asteroid composition, motion, and internal properties while further advancing planetary defense measures, and every nearby passage deepens scientific insight into how such bodies act and how humanity might react should an asteroid one day present a real danger.
For now, astronomers say the passage of 2026JH2 serves primarily as a reminder of the dynamic nature of Earth’s cosmic environment. Small asteroids routinely move through the solar system, and thanks to improving technology, scientists are becoming increasingly capable of spotting them before they pass nearby.
A livestream of the asteroid’s approach is expected to be broadcast by the Virtual Telescope Project from observatories in Italy, allowing astronomy enthusiasts around the world to follow the event in real time. Although the asteroid itself will remain far too dim for most people to see directly, the flyby continues to capture public curiosity about the many objects that silently travel through Earth’s neighborhood in space.
