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103039 (1999 XB121)
Classification: Main-belt Asteroid          SPK-ID: 2103039
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325985949065967 5.3403e-08  
a 2.327365368904748 7.6005e-09 au
q 2.018759991153706 1.2763e-07 au
i 7.243897768901222 4.251e-06 deg
node 44.71610404212357 3.0695e-05 deg
peri 335.8234998643571 3.3145e-05 deg
M 6.910607470512807 1.2043e-05 deg
tp 2459175.605179281259
(2020-Nov-22.10517928)		 4.3363e-05 TDB
period 1296.866519620429
3.55		 6.3528e-06
1.739e-08		 d
yr
n .277592176645416 1.3598e-09 deg/d
Q 2.635970746655791 8.6083e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1143  
   data-arc span      7763 days (21.25 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49992  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:08  

Additional Information
 Earth MOID = 1.02313 au 
 Jupiter MOID = 2.81862 au 
 T_jup = 3.551 
[ 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 15.71   n/a E2021B55  

103039 (1999 XB121)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 XB121 = 2001 FJ75 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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