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146634 (2001 US42)
Classification: Main-belt Asteroid          SPK-ID: 2146634
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05884136418879896 3.9372e-08  
a 2.666491250291869 2.0459e-08 au
q 2.509591267527199 1.0496e-07 au
i 1.409105921834376 5.0809e-06 deg
node 186.3546097353961 0.00018018 deg
peri 255.4496578597708 0.00018748 deg
M 50.537190547972 4.9809e-05 deg
tp 2458777.236738081197
(2019-Oct-20.73673808)
0.00021959 TDB
period 1590.408438206984
4.35
1.8304e-05
5.011e-08
d
yr
n .2263569479082125 2.6052e-09 deg/d
Q 2.823391233056539 2.1663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      6710 days (18.37 yr)  
   first obs. used      2001-09-19  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57342  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:38:30  

Additional Information
 Earth MOID = 1.52585 au 
 Jupiter MOID = 2.30109 au 
 T_jup = 3.380 
[ 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 16.2   n/a MPO417788  

146634 (2001 US42)          Discovered 2001-Oct-17 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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