Neo Planner V2.3 -
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With comets y/n:
Select here whether you want to include comets in the planning or not.
Neo Planner calculates observation times in R.A. order of
currently visible comets according to the official publication of the MPC and
additionally the most recently observed comets from
The reason for including the
CometasObs observations lies in the sometimes
considerable delay of the MPC in the publication of the last observations.
More information on the inclusion of comets in the planning
process can be found here.
NEO from year:
NEO with provisional designations are
always included in the planning. Enter the starting year of designations of objects
not yet numbered.
These objects have not yet been finally numbered and require
further follow-up observations. Recently discovered NEO, in particular,
require further observation to improve their orbital elements.
The uncertainty factor U plays a special role in the orbital elements. Objects
with a U factor of 3 or greater cannot be safely recovered in coming orbits.
U = 0 is the best value.
It is therefore a special and valuable task for amateurs to help improve the
orbital elements of the NEO.
NEO to year:
Enter the final year of designations of objects not yet numbered.
With numbered asteroids y/n:
Numbered objects are not in
the foreground of the observation priorities. However, there may be reasons for
observing objects whose orbit is very well known.
In the case of numbered NEOs such as 99944 Apophis or other asteroids that are
passing very close to Earth, there may well be an interest in tracking such NEOs.
In particular, to make meaningful videos for presentation purposes or for other
reasons, it can make perfect sense also to follow such objects.
In addition, around the full moon there is a good opportunity for diligent
observers to include numbered NEOs in the list to compensate for the lack of
That is why NEO Planner offers the option of including numbered
objects in the selection.
In order to organize the performance of the planning process and
the access to various servers within a reasonable framework, numbered objects
can only be included to a limited extent.
This restriction is implemented by including the parameter 'days since last
orbit update' from the 'Object selection' area of the settings.
The parameter controls until how many days in the past the last updates of the
MPC for new orbital elements happend and include those in the planning.
Example: If you enter 10 as the parameter value, only those objects will be
included for which a new orbit has been published since
the last 10 days.
Around full moon nights I personally increase my value to 99 and
include numbered asteroids in my selection. Later I switch it back to 10
and deselect numbered asteroids..
With own object list y/n:
Depending on the interest, the observer can create his
own object list with
any asteroids, which can be included in the planning selection area.
Application examples are the self-discovered numbered asteroids, which mostly
come from the main belt, or discovered objects that are not yet numbered.
With the help of this function, a previously popular follow-up list of your own
objects is no longer necessary.
These objects are included in the planning
process and taken into account in the final list,
if the selection was successful according to the settings parameters.