Recent NEAs
σ > 10" Or
Phase < 1°
Low dV

Tool Descriptions

UpObjects
Interactive table of observable NEOs.

AstEph
Asteroid and observatory-specific ephemeris generator.

AstFinder
Build finder chart for a given asteroid and time.

AstInfo
Return orbital and physical properties for a given asteroid

AstObs
Observability chart for asteroids and observatory.

MOID List
Asteroids whose orbits are near one or more of the major planets.

Critical List of Asteroids
Asteroids in need of observation due to large ephemeris uncertainty.

Asteroid Orbital Elements
Access to, and information about, the astorb orbital elements database.

Lowell Observatory offers these tools to assist with asteroid observation planning and to facilitate data mining across multiple surveys. Orbital solutions are calculated in-house based on Minor Planet Center observations.

This website is in the process of being upgraded and as such is in beta status; some tools may experience bugs. If a bug is particularly important, please direct concerns to asteroid@lowell.edu.

Recent Updates

For the full history of updates see the updates page.