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101073 (1998 RU18)
Classification: Main-belt Asteroid          SPK-ID: 2101073
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845830714221846 3.3294e-08  
a 2.236308626325404 7.2608e-09 au
q 1.823523911430334 7.6126e-08 au
i 3.135182272193495 3.4581e-06 deg
node 139.6344985688991 6.2172e-05 deg
peri 253.3653990883508 6.282e-05 deg
M 140.3497026719025 9.6612e-06 deg
tp 2458524.282849992638
(2019-Feb-09.78284999)
3.1786e-05 TDB
period 1221.507211906417
3.34
5.949e-06
1.629e-08
d
yr
n .2947178669851199 1.4353e-09 deg/d
Q 2.649093341220473 8.601e-09 au
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53237  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:36  

Additional Information
 Earth MOID = .832494 au 
 Jupiter MOID = 2.78427 au 
 T_jup = 3.613 
[ 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 16.2   n/a MPO453464  

101073 (1998 RU18)          Discovered 1998-Sep-14 by LINEAR at Socorro
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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