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103041 (1999 XN121)
Classification: Main-belt Asteroid          SPK-ID: 2103041
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2455609098095348 5.8468e-08  
a 2.717589478878836 2.0951e-08 au
q 2.050255733956529 1.6557e-07 au
i 9.906255574132642 6.1037e-06 deg
node 49.93369000097206 3.1906e-05 deg
peri 282.6991185423161 3.4076e-05 deg
M 269.6719222143769 1.7373e-05 deg
tp 2459411.076863999632
(2021-Jul-15.57686400)		 8.2101e-05 TDB
period 1636.342482463332
4.48		 1.8923e-05
5.181e-08		 d
yr
n .2200028440611405 2.5442e-09 deg/d
Q 3.384923223801143 2.6096e-08 au
   Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      9902 days (27.11 yr)  
   first obs. used      1993-04-15  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:03  

Additional Information
 Earth MOID = 1.06805 au 
 Jupiter MOID = 2.10311 au 
 T_jup = 3.295 
[ 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 15.23   n/a E2021B55  

103041 (1999 XN121)          Discovered 1999-Dec-05 by CSS at Catalina
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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