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JPL Small-Body Database Browser
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18860 (1999 RL133)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018860
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08636026959808989 3.9834e-08  
a 3.235268221072555 1.9361e-08 au
q 2.955869585278597 1.3129e-07 au
i 12.67847378482753 4.4853e-06 deg
node 197.9378761589963 1.8006e-05 deg
peri 332.6565009571626 3.0188e-05 deg
M 8.70866316775354 2.2995e-05 deg
tp 2458949.082275001969
(2020-Apr-09.58227500)
0.0001358 TDB
period 2125.513484989474
5.82
1.908e-05
5.224e-08
d
yr
n .1693708379374421 1.5204e-09 deg/d
Q 3.514666856866514 2.1033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1793  
   data-arc span      10553 days (28.89 yr)  
   first obs. used      1991-03-11  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50593  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:36:13  

Additional Information
 Earth MOID = 1.96604 au 
 Jupiter MOID = 1.475 au 
 T_jup = 3.141 
[ 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 12.8   n/a MPO340833  

18860 (1999 RL133)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RL133 = 1991 EC9 = 1998 MO11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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