Target Generation

Generate an observationally prioritized list of asteroids based on the capabilities of the user's instrument and other generic requirements.
View a list of asteroids whose orbits are very near the orbit of one or more of the major planets. These asteroids can have rapidly changing orbits due to perturbations by the large planets.
View lists LONEOS asteroid observations.
View a pre-selected list of asteroids in need of observation.

Observational Aids

Generate filterable list of objects up on a given night
Generate an asteroid ephemeris by selecting the asteroid by name, the start time, duration and interval.
Search by any asteroid identifier and return all possible identifiers
Build a chart which indicates when an asteroid is observable. The observability calculation is based on the user's instrument, and location and the asteroid's declination, uncertainty, solar elongation, magnitude, and galactic latitude.
Calculate the dates for a 'small' number of observations that will result in the numbering of an asteroid. The calculation is based on the user's instrument and location. Build a chart showing the ephemeris uncertainty after each suggested observation.
Build a chart showing the position of a selected asteroid and the surrounding stars. The motion vector and the line of variation are indicated.
Build a plot that depicts the position of stars and asteroids within a defined region.

Catalog Access

View a list of asteroid orbital parameters and physical properties. The orbital parameters are updated daily.
Create a list of stars that meet various positional and brightness criteria. The base catalogs include USNO-A2.0, USNO-SA2.0, and PPM.


Date Modification
July 30, 2015 Landing page tiles
July 29, 2015 UI improvments

These tools and projects are supported by NASA NEOO grant NNX14AN 82G awarded to the MANOS project.

The research and computing needed to generate astorb.dat were funded principally by NASA grant NAG5-4741, and in part by the Lowell Observatory endowment. astorb.dat may be freely used, copied, and transmitted provided attribution to Dr. Edward Bowell and the aforementioned funding sources is made. Hypertext links to this WWW site are welcome.

Lowell Observatory | MANOS | Flagstaff, AZ