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109781 (2001 RK84)
Classification: Main-belt Asteroid          SPK-ID: 2109781
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1170583015689294 4.5185e-08  
a 3.160726747695383 3.0114e-08 au
q 2.790737442886675 1.4967e-07 au
i 3.921162412213009 4.8349e-06 deg
node 240.5621275493772 8.5934e-05 deg
peri 357.6925469162597 9.0466e-05 deg
M 218.7241891089031 3.2224e-05 deg
tp 2459805.960342333429
(2022-Aug-14.46034233)
0.00018975 TDB
period 2052.479624155588
5.62
2.9333e-05
8.031e-08
d
yr
n .1753975999387121 2.5067e-09 deg/d
Q 3.530716052504091 3.364e-08 au
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      8919 days (24.42 yr)  
   first obs. used      1995-07-03  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60228  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:07:46  

Additional Information
 Earth MOID = 1.77865 au 
 Jupiter MOID = 1.47955 au 
 T_jup = 3.191 
[ 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 14.9   n/a MPO459515  

109781 (2001 RK84)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
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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