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101923 (1999 RC18)
Classification: Main-belt Asteroid          SPK-ID: 2101923
[ 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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2102910050365196 3.7168e-08  
a 2.420430381723309 7.6953e-09 au
q 1.911435644129788 9.0544e-08 au
i 2.241813571524 4.8812e-06 deg
node 184.4136284347678 7.6833e-05 deg
peri 211.0758979907194 7.7446e-05 deg
M 147.6638311862067 9.0907e-06 deg
tp 2458436.331346994382
(2018-Nov-13.83134699)		 3.3957e-05 TDB
period 1375.426287198989
3.77		 6.5593e-06
1.796e-08		 d
yr
n .2617370362559585 1.2482e-09 deg/d
Q 2.92942511931683 9.3135e-09 au
   Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5069  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:45  

Additional Information
 Earth MOID = .918616 au 
 Jupiter MOID = 2.49952 au 
 T_jup = 3.482 
[ 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 16.0   n/a MPO469026  

101923 (1999 RC18)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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