Comet Orbit Home Page
This HP is link free. If you have any problems and/or requests, please send e-mail to
Kazuo Kinoshita(amateur astronomer in Japan).
This research has made use of data and/or services provided by the International Astronomical Union's Minor Planet Center. www.minorplanetcenter.net
Last update 2018 Sept.13
Observable list[brighter than 20.0](last updated Sept.13)
Epoch 2019 Sept.14, Please use these orbits for the observation.
Daily ephemeris of comets (2019 Sept.4 - Oct. 4)
in order of brightness, in order of R.A., in order of Last Obs.
Comets orbital elements list (Include unusual Minor Planets)
Original form : MPC format
ASTROMETRICA form , ASTROMETRICA is shareware by Herbert Raab
GUIDE form , GUIDE is product of Project Pluto
THE SKY form , THE SKY is product of Bisque,
STELLANAVIGATOR 5,6,7 form , STELLANAVIGATOR is product of AstroArts Inc..
Year of perihelion passage [not include SOLWIND,SMM,SOHO] (last updated 2019 Jan. 17[2018 - 2020]
When the comet approaches the planet by the following conditions, I picked up the planet name, the distance, and time.
The Earth is less than 0.5AU, The Jupiter and Saturn are less than 1AU, The Uranus and Neptune are less than 0.5AU, Other planets are less than 0.05AU.
Numbered periodic comets (Updated 2019 Sept.12)
Unnumbered periodic comets (Updated 2019 Sept.12)
Non periodic comets (Updated 2019 Sept.12)