2021 TD4
Track asteroid 2021 TD4 on ObjectTracer's real-time 3D globe.
Track on 3D Globe →Close Approach Data
| Close Approach | 2026-Apr-04 03:58 UTC |
|---|---|
| Miss Distance | 66,282,098 km (172.354 Lunar Distances) |
| Velocity | 69,938 km/h (19.43 km/s) |
| Est. Diameter | 52.5–117.5 m |
| Hazardous | ✓ Not Hazardous |
| NASA ID | 54203711 |
What is 2021 TD4?
2021 TD4 is a near-Earth asteroid. It has an estimated diameter of 52.5–117.5 m. During its closest approach it will pass within 66,282,098 km of Earth — 172.354 times the distance from Earth to the Moon. ObjectTracer visualises this asteroid in real-time on an interactive 3D globe using NASA NeoWs data.
Track all near-Earth asteroids including PHAs, NEOs, and close approach objects on ObjectTracer's Asteroid Tracker.
What is a Near-Earth Object?
A Near-Earth Object (NEO) is an asteroid or comet whose orbit brings it close to Earth's. NASA tracks thousands of them via the NeoWs program, measuring miss distance in lunar distances (LD) — one LD is the average Earth–Moon distance, about 384,400 km.
Frequently asked questions
Will asteroid 2021 TD4 hit Earth?
No. 2021 TD4 passes Earth at a safe distance of about 66,282,098 km — 172.354 times the Earth–Moon distance. NASA does not classify it as hazardous.
How big is asteroid 2021 TD4?
2021 TD4 has an estimated diameter of 52.5–117.5 m, based on its brightness as measured by NASA.
When is 2021 TD4's closest approach to Earth?
2021 TD4 makes its close approach on 2026-Apr-04 03:58 UTC, travelling at about 69,938 km/h relative to Earth.
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