139P/Väisälä–Oterma

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139P/Väisälä-Oterma
Discovery
Discovered by Yrjö Väisälä
Liisi Oterma
Discovery date October 7, 1939
Alternative
designations
1939 TN; 1998 WG22
Orbital characteristics A
Epoch March 6, 2006
Aphelion 5.62 AU
Perihelion 3.402 AU
Semi-major axis 4.511 AU
Eccentricity 0.2458
Orbital period 9.58 a
Inclination 2.3296°
Last perihelion April 19, 2008
Next perihelion December 10, 2017[1]

139P/Väisälä–Oterma is a periodic comet in the solar system. When it was discovered in 1939 it was not recognized as a comet and designated as asteroid 1939 TN.

References[edit]

  1. ^ Patrick Rocher (2009-03-21). "Note number : 0179 P/Vaisala-Oterma : 139P". Institut de mecanique celeste et de calcul des ephemerides. Retrieved 2012-02-25. 

External links[edit]

Periodic comets (by number)
Previous
138P/Shoemaker-Levy
139P/Väisälä–Oterma Next
140P/Bowell-Skiff