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66831 (1999 UJ44)
Classification: Main-belt Asteroid          SPK-ID: 2066831
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07433539291271785 5.6945e-08  
a 2.759048688276303 1.8151e-08 au
q 2.553953719967966 1.5811e-07 au
i 4.991064980738551 4.6469e-06 deg
node 268.4340991205838 7.2007e-05 deg
peri 99.49422665515236 7.8708e-05 deg
M 247.1031034939562 3.3599e-05 deg
tp 2459725.448835012452
(2022-May-25.94883501)
0.00015844 TDB
period 1673.930696530404
4.58
1.6519e-05
4.523e-08
d
yr
n .2150626670185215 2.1223e-09 deg/d
Q 2.964143656584642 1.9501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      624  
   data-arc span      7493 days (20.51 yr)  
   first obs. used      1999-10-22  
   last obs. used      2020-04-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62241  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:25:12  

Additional Information
 Earth MOID = 1.55722 au 
 Jupiter MOID = 2.4109 au 
 T_jup = 3.333 
[ 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 15.18   n/a MPCxxxxx  

66831 (1999 UJ44)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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