139P/Väisälä–Oterma
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Periodic comet with 9 year orbit
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 | December 10, 2017 April 19, 2008 |
Next perihelion | 2027-Jul-23[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[]
External links[]
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 139P/Vaisala-Oterma – Seiichi Yoshida @ aerith.net
- 139P at Kronk's Cometography
Numbered comets | ||
---|---|---|
Previous 138P/Shoemaker–Levy |
139P/Väisälä–Oterma | Next 140P/Bowell–Skiff |
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