← Back to Near Earth Objects

((2009 HA21))

Safe
Physical Properties
Diameter (estimated):402 meters
Absolute Magnitude:20.85
First Observed:2009-04-20
Orbital Information
Orbital Class:APO
Orbital Period:644.82 years
Eccentricity:0.7290760745504513
Inclination:6.405623757064506°
Close Approach Details
Distance

18,837,245 km

Velocity

83,507 km/h

Date

1901-03-22

NASA ID: 3457840
How this was built
  • Calls NASA’s NEO Feed API + individual asteroid endpoint using your personal API key
  • Parses complex nested JSON using System.Text.Json
  • Displays real-time data: size, distance, speed, orbital elements, and hazard status
  • Clickable cards on the list page lead to detailed individual pages