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100169 (1993 UW4)
Classification: Main-belt Asteroid          SPK-ID: 2100169
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2145847763688334 6.0344e-08  
a 2.585373062534066 1.1883e-08 au
q 2.030591362080188 1.5872e-07 au
i 4.979712593554588 4.1696e-06 deg
node 148.1974907274915 6.4143e-05 deg
peri 277.8131579815228 6.5124e-05 deg
M 168.2668638956247 1.1203e-05 deg
tp 2458490.792563473983
(2019-Jan-07.29256347)
4.5546e-05 TDB
period 1518.38972471638
4.16
1.0468e-05
2.866e-08
d
yr
n .2370932799003526 1.6346e-09 deg/d
Q 3.140154762987944 1.4433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      9772 days (26.75 yr)  
   first obs. used      1993-10-10  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56256  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:40  

Additional Information
 Earth MOID = 1.05087 au 
 Jupiter MOID = 2.19643 au 
 T_jup = 3.384 
[ 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 15.98   n/a E2021B55  

100169 (1993 UW4)          Discovered 1993-Oct-20 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1993 UW4 = 2001 QP159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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