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120744 (1997 WX4)
Classification: Main-belt Asteroid          SPK-ID: 2120744
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .158839336786919 3.8613e-07  
a 2.523412531863181 1.211e-08 au
q 2.122595358862234 9.7809e-07 au
i .5881835163907829 1.417e-05 deg
node 219.3464834459751 0.00045083 deg
peri 211.2651950124072 0.00048147 deg
M 207.6455409539932 0.00014496 deg
tp 2459620.131487401179
(2022-Feb-09.63148740)
0.00059135 TDB
period 1464.133946989136
4.01
1.054e-05
2.886e-08
d
yr
n .2458791429160623 1.77e-09 deg/d
Q 2.924229704864129 1.4034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      337  
   data-arc span      7854 days (21.50 yr)  
   first obs. used      1997-10-23  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61496  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:49:44  

Additional Information
 Earth MOID = 1.13707 au 
 Jupiter MOID = 2.3492 au 
 T_jup = 3.437 
[ 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 17.1   n/a MPO432707  

120744 (1997 WX4)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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