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173902 (2001 UN163)
Classification: Main-belt Asteroid          SPK-ID: 2173902
[ 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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09078404670182894 4.4222e-08  
a 3.060875011402485 3.0356e-08 au
q 2.782996391418861 1.3974e-07 au
i 8.579808694402635 6.0363e-06 deg
node 61.84970381935862 3.414e-05 deg
peri 262.7391305437494 4.9492e-05 deg
M 285.0030322228188 3.8873e-05 deg
tp 2459607.981620445265
(2022-Jan-28.48162045)		 0.00021415 TDB
period 1955.990858138782
5.36		 2.9097e-05
7.966e-08		 d
yr
n .1840499399585932 2.7379e-09 deg/d
Q 3.33875363138611 3.3112e-08 au
   Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      7722 days (21.14 yr)  
   first obs. used      1999-05-19  
   last obs. used      2020-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56782  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:16:16  

Additional Information
 Earth MOID = 1.78601 au 
 Jupiter MOID = 1.94919 au 
 T_jup = 3.210 
[ 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 15.33   n/a E2021B55  

173902 (2001 UN163)          Discovered 2001-Oct-23 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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