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100171 (1993 UJ8)
Classification: Main-belt Asteroid          SPK-ID: 2100171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1449366765758195 3.7963e-08  
a 2.380290406928624 1.4399e-08 au
q 2.035299026063084 9.056e-08 au
i 7.490660904479873 4.0804e-06 deg
node 81.64867820664182 3.3802e-05 deg
peri 247.853093218172 3.7565e-05 deg
M 191.0236933247884 1.8676e-05 deg
tp 2459830.102812007615
(2022-Sep-07.60281201)
7.2279e-05 TDB
period 1341.353807421046
3.67
1.2171e-05
3.332e-08
d
yr
n .2683855653954224 2.4353e-09 deg/d
Q 2.725281787794164 1.6486e-08 au
  Orbit Determination Parameters
   # obs. used (total)      469  
   data-arc span      10016 days (27.42 yr)  
   first obs. used      1993-10-10  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:30:56  

Additional Information
 Earth MOID = 1.03593 au 
 Jupiter MOID = 2.60628 au 
 T_jup = 3.513 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO453456  

100171 (1993 UJ8)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1993 UJ8 = 2004 TK222 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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