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 known as 2026JH2, a rocky object expected to glide past Earth at an estimated distance of about 91,593 kilometers, roughly 56,900 miles. According to calculations from the European Space Agency, its trajectory will bring it to nearly one quarter of the usual gap between Earth and the moon, placing it among this year’s closest recorded asteroid flybys. Even so, researchers point out that it presents no risk of impact or atmospheric entry.
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.
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 experts believe there is nothing to worry about
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 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 is believed to come from the primary asteroid belt situated between Mars and Jupiter, where experts note that impacts among rocky bodies, along with Jupiter’s gravitational pull, can sometimes send debris drifting into the inner solar system, a mechanism understood for many years and credited with producing numerous near-Earth asteroids monitored by astronomers today.
Although the current flyby is harmless, the event highlights the importance of continuous observation programs designed to identify potentially hazardous objects before they become a concern.
The difficulty in pinpointing an asteroid’s precise dimensions
Although 2026JH2 has been observed directly, astronomers still cannot determine its precise dimensions, with current scientific estimates suggesting a diameter between 15 and 30 meters—roughly the length of one or two school buses—yet this figure remains uncertain because visible‑light telescopes capture only 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 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 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 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 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 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.
This limitation has encouraged space agencies and scientific organizations to invest more heavily in asteroid discovery and tracking programs. New observatories and next-generation sky surveys are expected to improve detection rates significantly over the coming years, allowing researchers to build a more complete 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 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 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 note that the arrival of 2026JH2 mainly highlights how constantly Earth’s cosmic surroundings shift. Small asteroids travel through the solar system on a regular basis, and with advancing technology, scientists are growing ever more adept at detecting them well before they make close approaches.
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.
