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JPL Small-Body Database Browser
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71117 (1999 XW157)
Classification: Main-belt Asteroid          SPK-ID: 2071117
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475263372378611 4.6863e-08  
a 2.572435689779226 1.3719e-08 au
q 2.192933674686146 1.2449e-07 au
i 14.32251073083001 4.7287e-06 deg
node 97.34940333237179 2.0561e-05 deg
peri 308.7617220471507 2.6128e-05 deg
M 14.95343954928558 1.8391e-05 deg
tp 2458937.902957467467
(2020-Mar-29.40295747)
7.6785e-05 TDB
period 1507.00681521721
4.13
1.2056e-05
3.301e-08
d
yr
n .2388841220655741 1.911e-09 deg/d
Q 2.951937704872306 1.5743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1106  
   data-arc span      7411 days (20.29 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:20:59  

Additional Information
 Earth MOID = 1.23316 au 
 Jupiter MOID = 2.43248 au 
 T_jup = 3.370 
[ 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 14.5   n/a MPO502592  

71117 (1999 XW157)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20031109/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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