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List of asteroid close approaches to Earth in 2025
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Below is the list of asteroids that have come close to Earth in 2025, as of 8 April 2025[update].
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Timeline of known close approaches less than one lunar distance from Earth
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A list of the 46 known near-Earth asteroid close approaches less than 1 lunar distance (0.0025696 AU (384,410 km; 238,860 mi)) from Earth in 2025, as of 8 April 2025[update], based on the close approach database of the Center for Near-Earth Object Studies (CNEOS).[1]
For reference, the radius of Earth is about 0.0000426 AU (0.0166 LD; 6,370 km; 3,960 mi). Geosynchronous satellites have an orbit with semi-major axis length of 0.000282 AU (0.110 LD; 42,200 km; 26,200 mi).
The closest approach of Earth by an asteroid in 2025 was that of 2025 BP6, an asteroid with a diameter of 1.1–2.6 m (3.6–8.5 ft), at about 9,710 km (6,030 mi; 6.49×10−5 AU; 0.0253 LD) from the center of the Earth, or 3,300 km (2,100 mi) above its surface.[2] The largest asteroid to pass within 1 LD of Earth in 2025 was 2025 BB2 at 20–44 m (66–144 ft) in diameter, for an absolute magnitude of 25.6.[3] The fastest asteroid to pass within 1 LD of Earth in 2025 was 2025 FX2 that passed Earth with a velocity with respect to Earth of 25.08 km/s (56,100 mph),[4] while the slowest bypass within lunar distance was that of 2025 EW at a velocity with respect to Earth of 3.39 km/s (7,600 mph).[5]
The CNEOS database of close approaches lists some close approaches a full orbit or more before the discovery of the object, derived by orbit calculation. The list below only includes close approaches that are evidenced by observations, thus the pre-discovery close approaches would only be included if the object was found by precovery, but there was no such close approach in 2025.
This list and the relevant databases do not consider impacts as close approaches, thus this list does not include any of the objects that collided with Earth's atmosphere in 2025, none of which were discovered in advance, but were observed visually or recorded by infrasound sensors designed to detect detonation of nuclear devices.[6]
Rows highlighted red indicate objects which were not discovered until after closest approach
Rows highlighted yellow indicate objects discovered less than 24 hours before closest approach
Rows highlighted green indicate objects discovered more than one week before closest approach
Rows highlighted turquoise indicate objects discovered more than 7 weeks before closest approach
Rows highlighted blue indicate objects discovered more than one year before closest approach
(i.e. objects successfully cataloged on a previous orbit, rather than being detected during final approach)
Warning times by size
This sub-section visualises the warning times of the close approaches listed in the above table, depending on the size of the asteroid. The sizes of the charts show the relative sizes of the asteroids to scale. For comparison, the approximate size of a person is also shown. This is based the absolute magnitude of each asteroid, an approximate measure of size based on brightness.[1]
Absolute magnitude H ≥ 30 (smallest)
(size of a person for comparison)
Absolute magnitude 30 > H ≥ 29
Absolute magnitude 29 > H ≥ 28
Absolute magnitude 28 > H ≥ 27
Absolute magnitude 27 > H ≥ 26
Absolute magnitude 26 > H ≥ 25
- After closest approach: 1 (50.0%)
- < 24 hours before: 0 (0.0%)
- up to 7 days before: 0 (0.0%)
- > one week before: 1 (50.0%)
- > 7 weeks before: 0 (0.0%)
- > one year before: 0 (0.0%)
Absolute magnitude 25 > H (largest)
None
Notes
- Discovery date (first reported image), and if the object was confirmed and previously undiscovered, the discoverer
- Distance from the center of Earth to the center of the object. See the NASA/JPL Solar System Dynamics Glossary: Geocentric. Earth has an equatorial radius of 6,378 km (3,963 mi; 0.01659 LD).
- Objects that approached closer to the Moon than Earth are marked with a check.
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Beyond 1 LD
Astronomers are also tracking close approaches of larger asteroids beyond one lunar distance, which provide them with an opportunity to study these objects with radar. Examples will be added below.
See also
References
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