Close Approach Record

Asteroid (2019 SD8)

Closest pass on 2026-Oct-10 04:18 TDB (Julian Date: 2461323.67908988)

Key Facts

  • On 2026-Oct-10 04:18, asteroid (2019 SD8) passed Earth at a nominal distance of 7,160,000 km (18.6 lunar distances).
  • At closest approach, the object was traveling at 9.52 km/s relative to Earth.
  • The object has an estimated size of 11.8 m, which is about the size of a school bus.
  • The miss distance was about 19 times the distance to the Moon.
  • Hazard classification: 10 to 25 meters. Produces a powerful high-altitude shockwave capable of shattering windows, damaging roofs, and producing minor local injuries like the 2013 Chelyabinsk event.

Visual Scale Comparison

giraffe 5.5 m Asteroid 2019 SD8 about the size of a school bus ~12 m school bus 12 m
Scale ladder data
Target12 m
Smallergiraffe: 5.5 m
Largerschool bus: 12 m

Object size compared to known reference benchmarks.

Miss Distance Orbital Dial

Moon Orbit (1 LD = 384,400 km) 18.6 LD Earth

Concentric orbital rings showing Earth, Moon orbit, and asteroid trajectory.

Astrometric & Orbital Parameters

Designation2019 SD8
Full Object Name(2019 SD8)
Nominal Miss Distance7,160,000 km (18.6 lunar distances / 0.0478794963287199 au)
3-Sigma Minimum Distance6,782,148.15 km (17.643 LD)
Relative Velocity (v_rel)9.52372228426725 km/s (about 11 rifle bullets)
Velocity at Infinity (v_inf)9.5178772191636 km/s
Time Uncertainty (3-sigma)13:49
Absolute Magnitude (H)27.4 mag
Orbit Solution ID9 (NASA JPL Small-Body Database)
Inside Moon OrbitNo
Inside Geostationary RingNo

Cite this page

Permanent URL: https://whatnearlyhitus.com/approaches/2026-Oct-10/2019-sd8/ | Machine-readable twin: index.json

APA:
What Nearly Hit Us Project. (2026). Asteroid (2019 SD8) Close Approach on 2026-Oct-10 04:18. What Nearly Hit Us. Retrieved from https://whatnearlyhitus.com/approaches/2026-Oct-10/2019-sd8/
MLA:
"Asteroid (2019 SD8) Close Approach on 2026-Oct-10 04:18." What Nearly Hit Us, What Nearly Hit Us Project, 2026-09-24, https://whatnearlyhitus.com/approaches/2026-Oct-10/2019-sd8/.
BibTeX:
@misc{approach_2019SD8_202610,
  title = {Asteroid (2019 SD8) Close Approach on 2026-Oct-10 04:18},
  author = {{What Nearly Hit Us Project}},
  year = {2026},
  url = {https://whatnearlyhitus.com/approaches/2026-Oct-10/2019-sd8/},
  note = {Primary upstream source: NASA/JPL CNEOS CAD API}
}