The following new pages or services have been added recently to these WWW
- The MPChecker script now works with dates back to 1800. You should read
the notes supplied on the MPChecker page for information on this
extension. [2012 June 16]
- Various on-line lists are now supplied in sortable-table format via
new URLs. The plain ASCII versions remain available in their
original locations. More lists will become available in the new
format in the near future. [2012 May 7]
- The DB orbit search feature now has an "Interactive Orbit Sketch"
capability, enabling HTML5-enabled browsers to view an orbit from
any angle. [2012 Apr. 10]
- We were remiss in announcing here the fact that the DB orbit search
feature now returns uncertainties in the primary orbital elements.
Not all orbits yet have this information. [2012 Apr. 10]
- The capability to submit astrometric batches via the Feedback forms
has been added. This is primarily for those observers who cannot
switch off HTML messages or encoded attachments in their e-mail
submissions to the MPC. [2012 Jan. 23]
- The MPES PDF documentation was updated. [2012 Jan. 3]
- The MPES now outputs a message if an object is in the earth's umbra or
penumbra. [2011 June 25]
- The www.minorplanetcenter.org site has been shut down. The .org site
is now a redirect to this .net site. [2011 June 7]
- The file of ONS observations is now accessible from the MPCAT-OBS page.
[2011 Mar. 28]
- Following requests from observers, the following additions have been
added to the NEOCP service: a header for the returned orbits; output
of variant orbits when requesting orbits fixed; and indication of the
number of observations and orbits used in the plot. [2011 Mar. 28]
- We have added a Printer-friendly Version link to the top of each new
look page. The script that generates these pages still needs some
tweaking (it loses the first few paragraphs of the main MPC page, for
example), but it is useable. [2009 June 26]
- A page listing reported problems with the new look is now
available. [2009 June 16]
- Since we have received no negative feedback on the sample new look page
we put on-line last week, we are beginning to transition all MPC/CBAT
pages over to the new look. We will be doing a global change on all
pre-existing HTML pages. Some pages may require tweaks: please report
any pages you think are problems. The procedures that update the dynamic
pages are being changed: this may take some time. [2009 June 16]
- We have fixed the problem with the updating of the official Czech mirror
site for the MPCORB files. We are just waiting for the reconfiguration at the Czech
end necessary to allow the files to become visible publically. [2009 June 10]
- Updated documentation on the MPES is now available. [2009 May 16]
- Prompted by the two user requests detailed below, we thought it would
be useful to request a variant orbit in the MPES for (or close to) a
specified L-O-V sigma. This is now possible, using the form "[sigma=-2.2]"
to request an ephemeris as close as possible to L-O-V sigma = -2.2.
Compare this with the form "" to request variant orbit number 5.
Since a lot of functionality has been added today to the MPES with regard
to variant orbits, we will endeavor to update the PDF documentation as soon
[2009 May 13]
- Following a report from the same user as the other update today,
the Minor Planet Ephemeris Service now correctly returns variant orbits
for routine objects. Previously, if you had entered "(80302) ", you
would have got the nominal solution, not the L-O-V sigma = -3 solution.
The MPES is now consistent with the documentation in this regard. The
output has also been extended to indicate how many variant orbits are
available for each object (previously, this information was only available
by looking at a plot or a table of the sky uncertainty). [2009 May 13]
- Following a request from a user, the Minor Planet Ephemeris Service now
indicates the L-O-V sigma if you request a variant orbit.
[2009 May 13]
- A new web service allowing video observers to derive the mini normal
places needed for submission. Documentation (PDF, 660KB) on using the
service is supplied and should be considered mandatory reading.
[2009 March 30]
- In the Minor Planet Ephemeris Service, you can now select whether you
want azimuths measured from the south or the north meridian.
[2009 March 27]
- The secure on-line order form has been reactivated. Apologies for the
8+ month delay in getting the new service on-line, but it was out of
our hands. [2008 September 8]
- The raw pointing data files (for those observers who have OK'ed their
release) used by the Sky Coverage service are now
available [Added 2008 August 22]
- The lists of discovery circumstances
for numbered minor planets has been upgraded to included diacritical
marks on the names of the minor planets, discovery sites and discoverers.
A plain text version of the full listing continues to be available.
[Added 2008 June 26]
- A new page with information
on observatory codes and requesting help with updating coordinates of
assigned codes. [Added 2008 May 6]
- A new version of the cgi script that is executed when one selects
"Display all designations for this object" in the MPES has been
installed. [Added 2007 July 24]
- A Site Map is now available.
[Added 2007 July 12]
- It seems that Google has not yet indexed URLs in the www.cfa.harvard.edu
domain. The search site facility has
been extended to allow searching of both cfa-www and cfa.www URLs.
[Added 2007 June 28]
- A new service to help identify objects:
which helps identify NEOs and comets. This works on a subset of the
datafile used by MPChecker
and so returns results much more quickly. [Added 2007 June 17]
- A new ECS service to allow extraction of observations of specific
minor planets, comets and natural satellites:
MPCOBS. [Added 2007 June 14]
- A new service to help observers identify possible NEOs:
NEO Rating. [Added 2007 May 27]
- Two new services that help identify objects:
which helps identify NEOs; and
which helps identify comets. These work on subsets of the datafile used
and so return results much more quickly. [Added 2007 March 14]
- An updated version of the new observation format is
A PDF version is available by
HTTP for those who have difficulty accessing the ftp site.
[Added 2006 June 20]
- Access to some MPC-published citations for named minor planets
is now possible through the
[Added 2006 April 20]
- The 2006 March 14 update to
the list of light-curve
parameters has now been posted. [Added 2006 March 28]
- New service added to ECS: MPCArchive.
This allows access to PDF versions of back issues of the MPCs,
MPSs and MPOs. As of 16:44 EST, March 1, all available
MPC (back to late 1979) and MPO batches are on-line.
[Added 2006 Feb. 28]
- Added a section of the use
of spam-blocking systems and how to submit observations from two or
more observatory codes in the same message. [Added 2005 Oct. 31]
- The 16th edition of the Catalogue
of Cometary Orbits is now available. [Added 2005 Sept. 28]