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294478 (2007 WD)
Classification: Main-belt Asteroid          SPK-ID: 2294478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1907967989651053 6.3319e-08  
a 2.596227761588432 2.8043e-08 au
q 2.100875815293019 1.7552e-07 au
i 9.011302148289584 5.0316e-06 deg
node 110.8909604402751 4.1938e-05 deg
peri 303.5166144848695 4.5913e-05 deg
M 1.834260505301717 2.4926e-05 deg
tp 2458992.714775772624
(2020-May-23.21477577)
0.00010569 TDB
period 1527.962202617629
4.18
2.4756e-05
6.778e-08
d
yr
n .2356079223578083 3.8174e-09 deg/d
Q 3.091579707883846 3.3394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      227  
   data-arc span      5730 days (15.69 yr)  
   first obs. used      2003-12-19  
   last obs. used      2019-08-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56973  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:05:00  

Additional Information
 Earth MOID = 1.12834 au 
 Jupiter MOID = 2.28822 au 
 T_jup = 3.374 
[ 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 16.3   n/a MPO450203  

294478 (2007 WD)          Discovered 2007-Nov-16 by Lowe, A. at Mayhill
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2007 WD = 2003 YQ99 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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