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|Discovered by||Palomar Observatory|
|Discovery date||November 16, 2002|
|MPC designation||(119979) 2002 WC19|
|Minor planet category||Twotino|
|Epoch December 31, 2006 (JD 2454100.5)|
|Aphelion||8989.786 Gm (60.093 AU)|
|Perihelion||5269.094 Gm (35.222 AU)|
|Semi-major axis||7129.440 Gm (47.657 AU)|
|Orbital period||120169.272 d (329.01 a)|
|Average orbital speed||4.24 km/s|
|Longitude of ascending node||109.692°|
|Argument of perihelion||45.322°|
|Satellites||1 (≈127 km)|
|Dimensions||≈400 km (assumed)|
|Surface area||5.5×105 km²|
|Mean density||2.0? g/cm³|
|Equatorial surface gravity||0.1174? m/s²|
|Escape velocity||0.2220? km/s|
|Sidereal rotation period||? d|
|Absolute magnitude (H)||5.0|
Neptune is held stationary at 5 o'clock.
2002 WC19 has a semi-major axis (average distance from the Sun) near the edge of the classical belt. It is in a 1:2 orbital resonance with Neptune, and thus is called a twotino. For every one orbit that a twotino makes, Neptune orbits 2 times.
Knowing how many twotinos there are may reveal whether Neptune took roughly 1 million or 10 million years to migrate about 7 AU from its birth location.
- Marc W. Buie (2004/12/14 using 61 of 65 observations). "Orbit Fit and Astrometric record for 119979". SwRI (Space Science Department). Retrieved 2009-03-04.
- "MPEC 2009-C70 :Distant Minor Planets (2009 February 28.0 TT)". Minor Planet Center. 2009-02-10. Retrieved 2009-03-04.
- Wm. Robert Johnston (26 November 2008). "(119979) 2002 WC19". Johnston's Archive. Retrieved 2009-03-04.
- Ron Cowen (2009-01-04). "On the Fringe". ScienceNews. Archived from the original on 07 January 2010. Retrieved 2010-01-04.