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101818 (1999 JD13)
Classification: Mars-crossing Asteroid          SPK-ID: 2101818
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2670542635499884 3.9099e-08  
a 2.191778099820715 8.6138e-09 au
q 1.606454413508101 8.9091e-08 au
i 5.673541092121195 4.7937e-06 deg
node 219.9542972172257 4.065e-05 deg
peri 54.40770647113893 4.2515e-05 deg
M 248.2584360183839 1.6802e-05 deg
tp 2459568.379465211222
(2021-Dec-19.87946521)		 5.6903e-05 TDB
period 1185.204526919176
3.24		 6.9869e-06
1.913e-08		 d
yr
n .3037450430060246 1.7906e-09 deg/d
Q 2.77710178613333 1.0914e-08 au
   Orbit Determination Parameters
   # obs. used (total)      540  
   data-arc span      7971 days (21.82 yr)  
   first obs. used      1999-05-14  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54046  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:46  

Additional Information
 Earth MOID = .597058 au 
 Jupiter MOID = 2.35751 au 
 T_jup = 3.619 
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Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO436476  

101818 (1999 JD13)          Discovered 1999-May-14 by Tholen, D. J., Whiteley, R. at Mauna Kea
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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