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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1581316232214932 3.8371e-07  
a 2.52381748371222 1.2008e-08 au
q 2.124722128298022 9.6597e-07 au
i .587671796145801 1.4167e-05 deg
node 219.1816861249373 0.00045075 deg
peri 211.5393301731482 0.00048216 deg
M 256.6175319310705 0.0001471 deg
tp 2459621.061718806865
(2022-Feb-10.56171881)		 0.00059779 TDB
period 1464.486402757623
4.01		 1.0451e-05
2.861e-08		 d
yr
n .24581996754775 1.7543e-09 deg/d
Q 2.922912839126417 1.3906e-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 = 1.13869 au 
 Jupiter MOID = 2.34993 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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