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173942 (2001 WW56)
Classification: Main-belt Asteroid          SPK-ID: 2173942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896319793127685 6.1157e-08  
a 3.044565562098311 2.7767e-08 au
q 2.467218568410116 1.7989e-07 au
i .5617765762145221 5.5989e-06 deg
node 254.7240090808549 0.00065132 deg
peri 109.27718523704 0.00065152 deg
M 242.570166908907 1.9954e-05 deg
tp 2459833.439741983810
(2022-Sep-10.93974198)
0.00011442 TDB
period 1940.378361411931
5.31
2.6545e-05
7.268e-08
d
yr
n .185530825925127 2.5381e-09 deg/d
Q 3.621912555786505 3.3033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      6762 days (18.51 yr)  
   first obs. used      2001-10-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59563  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:59:12  

Additional Information
 Earth MOID = 1.4636 au 
 Jupiter MOID = 1.84244 au 
 T_jup = 3.211 
[ 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 16.13   n/a E2021B55  

173942 (2001 WW56)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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