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103147 (1999 XU212)
Classification: Main-belt Asteroid          SPK-ID: 2103147
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .222151228788141 4.9332e-08  
a 2.605040418457289 7.9241e-09 au
q 2.026327488454229 1.2811e-07 au
i 7.641729627037585 3.8043e-06 deg
node 215.3023349417851 2.6221e-05 deg
peri 229.4038513795164 2.7564e-05 deg
M 347.8135894210964 7.4276e-06 deg
tp 2459252.486841357050
(2021-Feb-06.98684136)
3.1656e-05 TDB
period 1535.748592037156
4.20
7.0072e-06
1.918e-08
d
yr
n .2344133680907129 1.0696e-09 deg/d
Q 3.183753348460349 9.6844e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1032  
   data-arc span      7771 days (21.28 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:27  

Additional Information
 Earth MOID = 1.0512 au 
 Jupiter MOID = 2.11012 au 
 T_jup = 3.365 
[ 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 15.44   n/a E2021B55  

103147 (1999 XU212)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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