CALL: Projects Page

Projects Page

The list of projects that require data from asteroid lightcurve was getting rather lengthy, and it's still growing. This page is reserved for on-going projects in which amateurs (and professionals) are encouraged to take part.

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Mikko Kaasalainen Shape Modeling Program
Mikko Kaasalainen's web site

There is much to learn about an asteroid after its lightcurve parameters have been found. For one, continued observations over several years can lead to determination of the shape of the asteroid.

Josef Durech - Database for Asteroid Models via Inversion Techniques (DAMIT)
The DAMIT site lists known shape/spin axis models along with the underlying data when available.


Lightcurves in Support of Asteroid Occultations

Lightcurves with sufficiently-defined periods obtained near the time of an occultation are valuable for determining the rotation phase at the time of the event and to help modeling. The combination of lightcurve inversion models and occultation data can be used to eliminate some solutions from the inversion process.

International Occultation Timing Association

Upcoming Occultations and Other Information

How to do accurate occultation timing using a CCD camera


Steve Slivan's Koronis Family Modeling Program
Steven Slivan of Wellesley College, among others, has an on-going program to determine the shapes of Koronis family members.


The site includes a site calculator that finds suitable targets within reach of a given location and observing restrictions, e.g., limiting magnitude. There is also a list of standard stars to be used for calibrating differential photometry so that all observations can be merged with a minimum of difficulty.



Planned Radar Targets
Click here for a list of targets planned for radar observations. Optical observations are often critical to support radar findings.

Check out these other links as well
Arecibo schedule
Additional Goldstone information
Low Phase Angle Project
Observations that get accurate V magnitudes at small phase angles as well as several steps on either side can make important contributions to the study of the surface makeup of asteroids.

There are two ZIP files for a given year. For both sets of data, the limiting phase angle is now 1.0°. This helps assure that the asteroids getting closest to 0° are covered. Keep in mind that you should try to get measurements well away from opposition as well so as to get a good solution for the H/G parameters. This means that the asteroid could be 2 magnitudes, more or less, fainter than at opposition.


2011 Phase Data 14, Limiting Opposition Magnitude: 14.0
2011 Phase Data 16, Limiting Opposition Magnitude: 16.0 (for those with large telescopes)


One of the more active observers in this field is Richard Miles of the U.K. If you'd like to take part in this work, he can offer lots of sage advice.

Karin Family
This is believed to be a new family of asteroids, created only 5-6MY ago following a collision between a 15km parent body and another object. Most of the members are too small (faint) to be worked by amateurs. However, there are some that can come within reach of larger amateur instruments and those available to professionals.

Click here for to generate a listing with yearly and current vital stats for each member of the Karin Family (temporarily disabled).