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243687 (1999 XU146)
Classification: Main-belt Asteroid          SPK-ID: 2243687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02472443426221103 7.6565e-08  
a 2.624494786700501 2.0632e-08 au
q 2.559605637875209 2.0306e-07 au
i 12.73610443097933 7.4316e-06 deg
node 69.61209583441207 3.0984e-05 deg
peri 332.075772395617 0.00013632 deg
M 314.8578209606194 0.00012853 deg
tp 2459195.236345961283
(2020-Dec-11.73634596)
0.00055359 TDB
period 1552.984061423008
4.25
1.8313e-05
5.014e-08
d
yr
n .2318117802639454 2.7335e-09 deg/d
Q 2.689383935525793 2.1142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      199  
   data-arc span      10019 days (27.43 yr)  
   first obs. used      1993-05-20  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:54:57  

Additional Information
 Earth MOID = 1.57543 au 
 Jupiter MOID = 2.44088 au 
 T_jup = 3.368 
[ 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 16.3   n/a MPO437137  

243687 (1999 XU146)          Discovered 1999-Dec-07 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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