This service has an associated publication. If you use its data, it may be appropriate to reference 1980CeMec..22...63M (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.
To cite the service as such, we suggest the following BibTeX entry:
@MISC{vo:mpcorb_web, year=2009, title={Minor Planet Center - Asteroid Orbital Data}, author={Williams, G. and Keys, S. and Rudenko, M. and Galache, J.L.}, url={https://dc.zah.uni-heidelberg.de/mpc/q/pla/info}, howpublished={{VO} resource provided by the {GAVO} Data Center} }
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This research has made use of data and/or services provided by the International Astronomical Union's Minor Planet Center. Updated data files are available at http://www.minorplanetcenter.org/iau/mpc.html