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66842 (1999 UG53)
Classification: Main-belt Asteroid          SPK-ID: 2066842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .211443795880305 4.6226e-08  
a 2.566747264705951 1.3264e-08 au
q 2.024024479991135 1.2368e-07 au
i 12.60109387974372 6.5504e-06 deg
node 327.4723898444068 1.7607e-05 deg
peri 43.44577307636581 2.5045e-05 deg
M 15.79096211321237 2.0355e-05 deg
tp 2458934.616118183599
(2020-Mar-26.11611818)
8.4559e-05 TDB
period 1502.010915095484
4.11
1.1643e-05
3.188e-08
d
yr
n .239678684343725 1.8579e-09 deg/d
Q 3.109470049420768 1.6069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      15862 days (43.43 yr)  
   first obs. used      1977-02-25  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 05:56:12  

Additional Information
 Earth MOID = 1.04086 au 
 Jupiter MOID = 2.42167 au 
 T_jup = 3.367 
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Orbital Elements at Epoch 2456406.5 (2013-Apr-24.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2139708955424503 4.6217e-08  
q 2.016403129490444 1.2393e-07 au
tp 2455931.390408587438
(2012-Jan-04.89040859)
6.7619e-05 TDB
node 327.6570490468631 1.7614e-05 deg
peri 43.26464926006405 2.4814e-05 deg
i 12.60847679680134 6.5497e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      15862 days (43.43 yr)  
   first obs. used      1977-02-25  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 05:56:12  

Additional Information
 Jupiter MOID = 2.42167 au 
 T_jup = 3.367 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.135983585471083E-15 -5.711290407882528E-15 -2.046352591774039E-12 8.54113784641652E-15 -5.251293336625549E-13 -7.289458331050868E-15
q -5.711290407882528E-15 1.535827039570495E-14 5.639976692001261E-12 -2.359871005727415E-14 1.452633651902648E-12 2.099763311134252E-14
tp -2.046352591774039E-12 5.639976692001261E-12 4.572285828021013E-9 -1.282147421311398E-11 1.191808744573867E-9 1.33787642714869E-11
node 8.54113784641652E-15 -2.359871005727415E-14 -1.282147421311398E-11 3.102505145739535E-10 -3.054071574091488E-10 -3.156589018148572E-11
peri -5.251293336625549E-13 1.452633651902648E-12 1.191808744573867E-9 -3.054071574091488E-10 6.157115488496795E-10 3.433675357844697E-11
i -7.289458331050868E-15 2.099763311134252E-14 1.33787642714869E-11 -3.156589018148572E-11 3.433675357844697E-11 4.289826688718236E-11

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 14.3   n/a MPO445650  
diameter diameter 4.004 km 0.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66842 (1999 UG53)          Discovered 1999-Oct-20 by LONEOS at Anderson Mesa
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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