Hi Stefan, I recently went through this with an image of mine where I was able to identify an asteroid using the Annotate Image option in Pixinsight. See
post in the Deep Space forum here.
If you don’t use Pixinsight, the other option is the
Minor Planet Checker on the Minor Planet Centre web site. The site needs the specific details of the object sighting re: dates/times/location/search radius etc. and will bring up a list of known objects at those coordinates.
Adam Block has a video on this which goes through using Pixinsight and also using the minor planet centre. The minor planet centre discussion is at the 10’ 50” point in the video. Note that this video is three years old so the Pixinsight description is out of date. It refers to having to update custom data files but I found with the most recent version this was not necessary. I simply selected the Asteroid option and it quickly identified the object.
Hope that helps.
CS,
Rodney