Contact Us
Use the information below to decide which route to use to contact the Minor Planet Center via e-mail. If messages are written in languages other than English, there may be (significant) delays in responding.
Contacting Individual Staff Members
If you want to send a regular e-mail to an individual MPC staff member, send the message to <first initial><surname>@cfa.harvard.edu.
Reporting Astrometric Observations
Astrometric observations of minor planets, comets and natural satellites should not be reported via this form, but should be sent directly to mpc@cfa.harvard.edu, formatted exactly as described in the Guide to Minor Body Astrometry.
Querying Missing Astrometric Observations
If you think that we have not received your observation submission, or if you think that we have not processed one of your batches, use this form.Be sure to include the date and time you submitted the observations and mention whether or not you received an acknowledgement.
Reporting Corrections to Observatory Code Locations/Names
If the coordinates that we have on file for your site are incorrect or we have the site or observatory name incorrect, please use this form.If reporting updated coordinates, please be sure to indicate the source of the updated coordinates. See the Guide to Minor Body Astrometry or the Observatory Codes page for further information.
Do not use this form to report updated coordinates if you move your observatory! See the Guide to Minor Body Astrometry for further information.
Reporting Non-Functional Links
If a link on this site is dead or mis-directed, use this form.Be sure to include the URL on which the dead link resides and which link is at fault.
Reporting Faulty HTML
If the HTML code used on any page that displays the HTML 4.01-compliant icon is faulty, use this form.Be sure to include the URL on which the faulty HTML is to be found. You do not need to detail the fault(s).
Request New Pages/Services
If you wish to request a new webpage or web service use this form.If you need to contact us by postal mail, our address is: Mail Stop 18, 60 Garden Street, Cambridge, MA 02138, U.S.A.
