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173345 (1999 XE71)
Classification: Main-belt Asteroid          SPK-ID: 2173345
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2067851011549415 8.1245e-08  
a 2.651423637003945 1.5822e-08 au
q 2.103148732021481 2.1413e-07 au
i 8.201625481602369 9.1566e-06 deg
node 241.7976260002298 3.5415e-05 deg
peri 154.7893218430565 3.7951e-05 deg
M 295.1337091568732 1.4032e-05 deg
tp 2459284.640850805684
(2021-Mar-11.14085081)
6.2881e-05 TDB
period 1576.947054633154
4.32
1.4115e-05
3.864e-08
d
yr
n .2282892117032723 2.0434e-09 deg/d
Q 3.199698541986408 1.9094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      380  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      1999-10-12  
   last obs. used      2019-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57678  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:02:32  

Additional Information
 Earth MOID = 1.11414 au 
 Jupiter MOID = 2.2348 au 
 T_jup = 3.345 
[ 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 15.7   n/a MPO396380  

173345 (1999 XE71)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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