Astrophyzix CNEO Observatory
This module visualizes and tracks detected Near‑Earth Objects (NEOs) using current data, allowing users to explore orbital parameters, close approach distances, and potential Earth interaction. (View CNEO Observatory)
The CNEO Observatory integrates current orbital data of Near‑Earth Objects to illustrate real astrophysical behavior of minor bodies in the solar system. It applies Keplerian orbital mechanics and two‑body gravity approximations to compute orbital positions and close‑approach geometry. NEO tracking is grounded in observational astronomy using astrometry collected from surveys like Pan‑STARRS, Catalina Sky Survey, and validated by the Minor Planet Center and NASA’s Center for Near Earth Object Studies (CNEOS).
Orbital period (Kepler’s 3rd Law):
P = 2π √(a³ / μ)
where a is semi‑major axis and μ = GM (standard gravitational parameter).
Vis‑Viva Equation:
v = √(μ (2/r − 1/a))
describes orbital speed as a function of distance r and semi‑major axis a.
Minimum orbit intersection distance (MOID):
A computed scalar indicating the smallest distance between the NEO orbit and Earth’s orbit—used in risk evaluation.
- Milani, A., et al. (2000). Theory and applications of the statistical ranging method for asteroid orbit determination. Celestial Mechanics and Dynamical Astronomy. DOI
- Chesley, S. R., & Spahr, T. B. (2004). Earth impact risk and hazard assessments. Astronomical Society of the Pacific Conference Series. DOI
- NASA/JPL CNEOS Data Sources — official NEO data compiled from multiple surveys and automated astrometric processing. (CNEOS)
- Understand how Keplerian orbital elements define asteroid trajectories.
- Compute orbital period from semi‑major axis using Kepler’s third law.
- Use the vis‑viva equation to determine instantaneous orbital speed.
- Interpret MOID and close approach data in the context of Earth impact risk.
- Explore real observational NEO datasets for scientific inquiry.
Glossary
- NEO (Near‑Earth Object): An asteroid or comet with a perihelion distance less than 1.3 AU.
- Semi‑major axis (a): Average of an orbit’s closest and farthest distance from the central body.
- Vis‑Viva Equation: Relationship between orbital speed, position, and energy.
- MOID: Minimum Orbit Intersection Distance indicating how close two orbits come.
Planetary Defence — Near-Earth Object Dashboard
| Object | Date | Size (m) | Orbit | Speed | Miss | Hazard |
|---|---|---|---|---|---|---|
| Contacting NASA database… | ||||||
