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146640 (2001 UR61)
Classification: Main-belt Asteroid          SPK-ID: 2146640
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001654299535236 4.7433e-08  
a 2.69682259001514 1.6863e-08 au
q 2.426694195777899 1.2585e-07 au
i 1.885451724145652 5.1873e-06 deg
node 358.5252731503876 0.00012808 deg
peri 336.4011827141932 0.00013033 deg
M 116.7092156246735 2.4033e-05 deg
tp 2458476.079521446698
(2018-Dec-23.57952145)
0.00010683 TDB
period 1617.621807058709
4.43
1.5173e-05
4.154e-08
d
yr
n .2225489285747088 2.0874e-09 deg/d
Q 2.966950984252382 1.8553e-08 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6700 days (18.34 yr)  
   first obs. used      2001-09-20  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55647  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:38:33  

Additional Information
 Earth MOID = 1.4169 au 
 Jupiter MOID = 2.34975 au 
 T_jup = 3.361 
[ 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 16.4   n/a MPO453932  

146640 (2001 UR61)          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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