Welcome to MinorPlanet.Info

This web site serves as a gateway to the Collaborative Asteroid Lightcurve Link (CALL) web site in addition to many other subsites, external sites, and pages that concern research on asteroids (the "minor planets").


Use the links at left to navigate to the subsites.

Updated 2017 April 4

Asteroid Lightcurve Database (LCDB) 2017 April Release

The latest release (2017 April 3) of the LCDB is now available. The underlying SQL tables used throughout this site have also been updated.

Important Notice: Column mappings were changed in several files starting with the 2016 December release. See the updated README.TXT file in the ZIP.

Expanded Features on Observing Planning Tools

The Ephemeris Generator and One Asteroid tools (available via the Observation Planning page) now use a single oppositions data table that covers from 2014-2020. This allows you to plan further into the future. The table will be updated around the first of each year, removing the oldest data and extending out another year.

Asteroid Appulse Data (2015-2017)
The Observing Guides page has links to asteroid-DSO/PPM/asteroid appulses for 2015-2017.

Five Favorable/Brightest Apparitions (Numbered Asteroids)
The Observing Guides page has links to the latest files, which cover numbered asteroids from 1 to 480,806.


Collaborative Asteroid Lightcurve Link (CALL)

The CALL web site provides pages to where you can "reserve" an asteroid for observation. This lets other observers know that you are working it and either find another target or to request a collaboration in order to gather more data sooner. You can also submit the results of your asteroid lightcurve observations so that they are available to others prior to formal publication. The CALL site includes subpages that provide lists of targets for upcoming and recent past 3-month periods and other sites dedicated to asteroid lightcurve efforts.


The Minor Planet Bulletin

The Minor Planet Bulletin is the journal for amateurs (and even professionals) to publish individual lightcurves (one at a time or in bulk). The Bulletin is indexed by the ADS and found in the libraries of major observatories and institutions around the world. Since the early 21st century, the MPB has published the vast majority of new asteroid lightcurves.

MPB Authors
Download the latest MPB templates and Authors Guide (updated 2016 Nov 25)

Issue 44-1 (2017 January-March) now available.


The Asteroid Lightcurve Database (LCDB)

The asteroid lightcurve database (LCDB; Warner et al., 2009, Icarus 202, 134-146) is a compilation of published results that now includes period/amplitude parameters for more than 4,000 asteroids. In addition to a ZIP file download that contains pre-generated files, the LCDB pages include a query page where you can generate custom reports.

Latest Release: 2017 April 3 

Important Notice: Starting with the 2016 December release, column mappings were changed in several files. See the updated README.TXT file in the ZIP.

Click to Replace