World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0022722962
Reproduction Date:

Title: 38P/Stephan–Oterma  
Author: World Heritage Encyclopedia
Language: English
Subject: Antitail, C/2002 T7 (LINEAR), Comet Ikeya–Murakami, C/1847 T1, 147P/Kushida–Muramatsu
Publisher: World Heritage Encyclopedia


Discovered by Coggia, Jerome E.
Discovery date January 22, 1867
P/1980 L2, P/1942 V1, P/1867 B1, 38P
Orbital characteristics A
Epoch 1981-Apr-26
(JD 2444720.5)[1]
Aphelion 20.920 AU
(near Uranus)
Perihelion 1.5744 AU
(near Mars)
Semi-major axis 11.247 AU
Eccentricity 0.86002
Orbital period 37.72 yr
Inclination 17.981°
Last perihelion December 5, 1980[1][2]
Next perihelion November 10, 2018[2]

38P/Stephan–Oterma (also known as Comet Stephan–Oterma) is a periodic comet with an orbital period of 38 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).[1] It was discovered in January 1867, by Jerome Coggia at Marseilles Observatory, France.[1]


It has perihelion near the orbit of Mars and has aphelion near the orbit of Uranus. Acting like a centaur-hybrid, between the years 1982 and 2067, this object will make close approaches to the giant planets Jupiter, Saturn, and Uranus.[3] If this object did not show a coma and (for some definitions) had a perihelion beyond Jupiter's (5 AU), it would be considered a centaur.

Comet 38P passing within 1.6AU of Uranus in 2067.[3]


  1. ^ a b c d "JPL Small-Body Database Browser: 38P/Stephan-Oterma" (last observation: 1981-04-04;  
  2. ^ a b Seiichi Yoshida (2004-07-31). "38P/Stephan-Oterma". Seiichi Yoshida's Comet Catalog. Retrieved 2011-10-23. 
  3. ^ a b "JPL Close-Approach Data: 38P/Stephan-Oterma" (last observation: 1981-04-04;  

External links

  • Orbital simulation from JPL (Java) / Ephemeris
  • Gary W. Kronk's Cometography page for 38P
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.