NASA’s Asteroid Watch dashboard lists five near-Earth object flybys between October 27 and 30, 2026. All five are predicted to pass far beyond the Moon’s orbit.
| Object | Date | Approximate distance |
|---|---|---|
| 2026 TB94 | Oct 27 | 1.21 million miles |
| 2026 UB1 | Oct 28 | 2.28 million miles |
| 2018 GS1 | Oct 28 | 2.64 million miles |
| 2022 UV21 | Oct 29 | 3.51 million miles |
| 2026 UD | Oct 30 | 2.78 million miles |
Five approaches on NASA’s watch list
NASA’s Jet Propulsion Laboratory lists five near-Earth asteroid approaches spanning October 27 to 30, 2026, with distances ranging from about 1.21 million to 3.51 million miles. The objects are being tracked through the agency’s Asteroid Watch dashboard, which publishes estimates of size and closest-approach distance. The figures describe predicted flybys, not collisions. Even the nearest listed object is several times farther from Earth than the Moon. The dashboard is a useful way to see routine planetary-defense monitoring in action without turning an ordinary astronomical event into an unwarranted impact warning.
The closest object on October 27
Asteroid 2026 TB94 is listed for an October 27 approach at approximately 1.21 million miles, or about five times the average Earth-Moon distance. NASA describes its approximate size as 82 feet, comparable to an airplane. That comparison is a rough visual aid rather than a direct measurement of the object’s shape. Astronomers estimate asteroid dimensions using observations and assumptions about reflectivity, so actual sizes may differ. The key fact for public safety is that the predicted flyby is far beyond the Moon’s orbit. A close approach in astronomical terminology does not mean an object will enter the atmosphere.
Two visitors on October 28
NASA lists asteroid 2026 UB1 for October 28 at about 2.28 million miles and an estimated size of 130 feet. Another object, 2018 GS1, is expected the same day at roughly 2.64 million miles and is estimated at 340 feet across. These figures show how varied near-Earth asteroids can be, even among objects approaching within a few million miles. A larger object is not automatically more dangerous if its trajectory remains distant. Risk assessments require an orbit that intersects Earth at the same time, not merely an estimate of diameter. The listed distances indicate ordinary flybys rather than expected impacts.
Approaches on October 29 and 30
The next two objects in NASA’s displayed sequence are 2022 UV21, expected October 29 at around 3.51 million miles, and 2026 UD, expected October 30 at approximately 2.78 million miles. Their estimated sizes are 41 feet and 82 feet respectively. These are not the only asteroids in the solar system or even all objects under observation. The dashboard highlights the next five encounters that meet its display criteria. Its list changes as dates pass and new objects enter the window, so a screenshot should always be accompanied by the date on which it was consulted.
What counts as a near-Earth object
A near-Earth object is an asteroid or comet whose orbit brings it into Earth’s broader neighborhood. The term is based on orbital geometry, not on whether an impact is expected. NASA’s Asteroid Watch dashboard focuses on objects approaching within approximately 4.6 million miles, equivalent to about 19.5 times the average distance to the Moon. The fact that an object appears on the list means it meets a monitoring criterion. It does not mean it is on a collision course. Explaining this distinction helps prevent alarming interpretations of headlines about a rock passing ‘close’ to Earth.
Why scientists keep updating the distances
An asteroid’s predicted position is calculated from observations taken over time. Each new measurement can refine the orbit and narrow uncertainty about future positions. Objects observed for many years may have better-constrained paths than newly discovered bodies with limited observation arcs. The listed closest-approach distances are estimates based on the best available data, not permanent properties of the objects. Researchers may revise them as measurements improve. This is a normal part of orbital science and should not be confused with a sudden change in the asteroid’s physical course.
The Moon provides a useful comparison
The average distance between Earth and the Moon is approximately 239,000 miles. Comparing an asteroid’s distance with that benchmark gives readers a more intuitive sense of scale. For example, 1.21 million miles is roughly five lunar distances, while 3.51 million miles is nearly fifteen. Those separations are large compared with the dimensions of Earth and the Moon, even though they are small compared with the distances between planets. A numerical comparison is more informative than describing every flyby as a narrow escape. It also helps distinguish scientific interest from immediate danger.
Size estimates come with uncertainty
NASA’s dashboard uses broad size comparisons such as airplane-size, bus-size and building-size. These make the figures easier to imagine, but asteroid dimensions are not always measured directly. Brightness depends on both size and how reflective the surface is. A dark asteroid may appear fainter than a brighter object of similar dimensions. Infrared observations, radar measurements and other methods can help refine size estimates when available. For public reporting, the approximate nature of these figures matters. An object listed at 82 feet should not be described as having a perfectly known diameter or shape.
The difference between approach and impact risk
Planetary-defense teams are concerned with whether an object’s future orbit could intersect Earth’s position. An approach distance alone cannot establish long-term risk, and a large asteroid far away may pose no immediate concern. Conversely, a smaller object on a genuine impact trajectory could require attention. Analysts combine observations, orbital models and uncertainty calculations to assess possible encounters. The five objects in NASA’s current list are presented as flybys, not as imminent impacts. Reports that suggest otherwise would need credible evidence from the agency’s impact-monitoring systems.
Why tracking small objects is difficult
Many asteroids are faint, move against crowded star fields and are visible only under favorable viewing conditions. Ground-based telescopes face daylight, weather and atmospheric limits. Some objects approach from directions near the Sun, where glare makes optical detection challenging. Scientists therefore use repeated surveys and specialized software to identify moving points of light. The steady addition of newly designated asteroids reflects ongoing discovery work. It should not be interpreted as evidence that more rocks have suddenly begun threatening Earth. Better telescopes often reveal objects that previously went unnoticed.
How an asteroid receives its designation
Names such as 2026 TB94 encode information about when an object was discovered and its sequence in the discovery system. The provisional designation does not describe size, composition or danger. An older designation, such as 2018 GS1, indicates an object recognized years earlier, but the current flyby is a new point in its orbital cycle. Understanding these labels helps readers interpret NASA’s tables without assuming that every unfamiliar code represents a newly formed object. Objects can return to Earth’s neighborhood repeatedly as they travel around the Sun.
What NASA’s planetary-defense network does
Tracking near-Earth objects involves observatories that detect them, organizations that collect measurements and specialists who calculate orbits. NASA’s Center for Near Earth Object Studies evaluates trajectories and impact probabilities using reported observations. The Asteroid Watch display is a public-facing snapshot of this broader system. Its purpose is to make approaching objects understandable, not to replace the technical calculations used by scientists. Monitoring can identify cases that deserve additional observation and provide time for future planning if a genuinely hazardous trajectory is discovered.
Why early detection matters more than drama
The central goal of planetary defense is to find potentially dangerous objects well before any possible encounter. Long warning times allow astronomers to refine the orbit and determine whether an impact is genuinely possible. They also give governments and scientists more options for planning a response. A dramatic headline about a routine flyby can obscure that practical objective. The current list demonstrates the everyday work of identifying, measuring and tracking objects that move through Earth’s neighborhood. Most such encounters are opportunities for observation rather than emergencies.
What readers should check before sharing
When an asteroid headline appears, three questions are useful. First, what is the predicted closest distance, and how does it compare with the Moon? Second, is the reported size an estimate or a direct measurement? Third, does an authoritative source identify any nonzero impact probability, or is the object simply making a routine approach? Checking the date also matters because a live dashboard updates continuously. These basic steps can separate a scientifically interesting flyby from misleading claims that Earth is facing an unexpected collision.
The larger picture
The October 27 to 30 sequence contains objects of different sizes and approach distances, but nothing in the displayed data indicates an imminent collision. NASA’s list is valuable because it turns abstract planetary-defense work into a clear record of upcoming events. The nearest listed asteroid, 2026 TB94, remains far beyond the Moon. The real story is the continuing ability of observatories and orbit specialists to predict such passages. Better detection, transparent public data and careful interpretation are the foundation of informed discussion about asteroid hazards.
Frequently asked questions
Will any of these five asteroids hit Earth?
The NASA dashboard lists them as distant flybys and does not indicate an imminent collision.
How close is asteroid 2026 TB94?
NASA lists a closest approach of approximately 1.21 million miles on October 27, about five times the average Earth-Moon distance.
Why does NASA track harmless flybys?
Repeated observations help refine orbits, improve detection methods and identify any objects that may warrant closer assessment in the future.
Source: NASA JPL Asteroid Watch, consulted October 27, 2026. The dashboard is dynamic and its next-five list changes over time.
