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JPL Small-Body Database Browser
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312223 (2007 WK55)
Classification: Main-belt Asteroid          SPK-ID: 2312223
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1240706982003378 1.0315e-07  
a 2.418133419931569 2.3644e-08 au
q 2.118113918179088 2.5041e-07 au
i 2.388005735865557 1.2058e-05 deg
node 3.901484936852985 0.00015399 deg
peri 113.7971913136331 0.00016787 deg
M 331.2786659682999 5.8569e-05 deg
tp 2458710.077382698238
(2019-Aug-14.57738270)
0.00022355 TDB
period 1373.468855166225
3.76
2.0145e-05
5.515e-08
d
yr
n .2621100570616366 3.8444e-09 deg/d
Q 2.71815292168405 2.6578e-08 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      5481 days (15.01 yr)  
   first obs. used      2003-10-16  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5206  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 04:40:36  

Additional Information
 Earth MOID = 1.13592 au 
 Jupiter MOID = 2.35466 au 
 T_jup = 3.504 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.7   n/a MPO460289  

312223 (2007 WK55)          Discovered 2007-Nov-30 by Ferrando, R. at Pla D'Arguines
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2007 WK55 = 2003 US298 = 2005 EM126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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