Available topics
- Codes of secular resonances
- Ephemerides prediction
- Ephemerides prediction results
- MJD conversion tables
- Object home page
- Object list
- Observation prediction
- Observation prediction results
- Observations
- Observatory home page
- Observatory list
- Orbital elements catalogs
- Orbital information
- PETra Project
- Proper elements catalogs
- Proper elements of bodies
- Related sites
- Search page
- Search results
- Services
OBJECT HOME PAGE
This is the "Home Page" for an asteroid. It contains a summary of relevant information, divided into several sections.
Services. There are links to two services, specific to the object at hand. More detailed descriptions are here.
Orbital Information. This section gives a summary of the object's orbit at an epoch near the present day. Note that the elements are given with reduced precision in order to be easily readable. For full precision please use the machine readable ASCII files. For the formal definitions of elements see FAQ-elements and for the discussion on precision FAQ-digits
The first table displays the orbital elements at an epoch near present day, along with the correspondig uncertainties. The uncertainty is computed as a square root of the associated diagonal element of the covariance matrix (for more details see document). Elements are in the J2000 ecliptic coordinate system.
The next table shows a set of useful data, whose definitions can be found in FAQ-other. Let us here mention that the absolute magnitudes are derived solely on the basis of photometric observations provided by the Minor Planet Center, and the AstDyS orbit computation. See also the discussion in the FAQ-magnitude.
One may examine the elements and the respective covariance matrices at the middle epoch of the observations, or at an epoch near present day by following the links to orbital details. Alternatively, download the ASCII file for input into OrbFit. This file contains the equinoctial elements at full machine precision.
Proper elements Click here to go directly to the proper elements page of the asteroid you selected.
Observational Information. Summary observational information is presented in the table. For the definitions of the quantities presented in the table see FAQ-other. For the actual observations, with residuals and a priori RMS values, follow the links below the table; help on the optical astrometry available here.
Go to the dedicated AstDyS orbital elements page by selecting the appropriate item on the main menu. There you can browse and download catalogs in different formats with orbital elements for all the asteroids in the database, as well as the software used to compute them.