Compare Asteroid Close Approaches

Compare asteroid close approaches

Choose two to four close-approach records from the current NASA/JPL snapshot and compare their predicted time, distance range, speed, brightness and measured diameter side by side.

Data retrieved 2026-10-24 18:52 UTC · Source: NASA/JPL Close Approach Data

A smaller distance is not an impact prediction. These are computed passes listed in JPL’s Close Approach Data. The charts compare supplied measurements; they do not rank danger.

Read the range, not only the dot. Nominal distance is JPL’s best estimate. Its 3-sigma range preserves the uncertainty around that estimate. Times are also predictions with 3-sigma uncertainty.

2. Compare

2026 UE has the smallest nominal distance in this selection; 2026 UE has the highest speed relative to Earth. Neither measurement is an impact prediction or a measure of danger.

Designation
2026 UE
Name: None listed
This approach record: 2026-10-25 05:49 UTC (± under 1 min, 3-sigma)
Nominal Earth distance
2,010,000 km5.23 LD
JPL 3-sigma distance range
5.16 to 5.29 LD
Speed relative to Earth
15.9 km/s
Absolute magnitude H
25.83
Measured diameter
Not measured
Official JPL object record for (2026 UE) (opens in new tab) →
Designation
2026 TB8
Name: None listed
This approach record: 2026-10-25 09:25 UTC (± under 1 min, 3-sigma)
Nominal Earth distance
2,720,000 km7.06 LD
JPL 3-sigma distance range
7.05 to 7.07 LD
Speed relative to Earth
7.8 km/s
Absolute magnitude H
23.87
Measured diameter
Not measured
Official JPL object record for (2026 TB8) (opens in new tab) →

Nominal distance and uncertainty

Linear scale in lunar distances (LD). The dot is JPL’s nominal distance; the pale bar is its full 3-sigma range. The Moon’s average distance is marked at 1 LD.

2026 UE5.23 LD; range 5.16 to 5.29 LD
2026 TB87.06 LD; range 7.05 to 7.07 LD

Speed relative to Earth

Linear scale in kilometres per second. Speed is not a measure of size, impact probability or danger.

2026 UE15.9 km/s
2026 TB87.8 km/s

Share this comparison

Each identifier includes the asteroid designation and this approach's JPL Julian date, so it names the exact record.

How to read the comparison

Distance and uncertainty

Kilometres and lunar distances come from JPL’s nominal distance in astronomical units. The uncertainty chart uses the supplied 3-sigma minimum and maximum. JPL does not document a surface-distance convention, so this page does not calculate altitude or clearance above Earth.

Brightness is not diameter

Absolute magnitude H describes brightness at a standard distance. Surface reflectivity also matters, so H is never turned into a size here. A diameter appears only when JPL supplies one; otherwise it says “Not measured”.

The snapshot covers close approaches JPL listed within 0.05 au over its collection window. It is not a complete list of every asteroid, and this comparison does not include impact-risk or potentially-hazardous-asteroid classifications. It is not an alert service.