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 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.
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 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.
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 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 is not a reliable measure of its size, as a large yet low‑albedo object may appear faint, whereas a smaller, highly reflective one can seem much more luminous.
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, though, that these comparisons speak only to size and not to danger, as 2026JH2 is not anticipated to pass into Earth’s atmosphere. Its path keeps it safely distant from the planet, eliminating any possibility of an airburst or impact.
Monitoring asteroids in the coming years remains crucial
Scientists are still certain that 2026JH2 poses no immediate threat, though specialists acknowledge that predicting an asteroid’s distant path is naturally challenging, since its orbit can gradually change over time due to gravitational forces from planets and other celestial bodies.
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 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 observations, astronomers face greater challenges when evaluating the exact shape, rotation, and trajectory of nearby asteroids. Optical telescopes provide valuable information, but radar systems allow scientists to build far more precise models of an object’s movement and structure.
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.
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 travel within approximately 32,000 kilometers of Earth, a distance closer than some satellites orbiting the planet. Despite the dramatic proximity, astronomers say there is no cause for alarm and instead describe the event as a unique 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 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.
