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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456876.5 (2014-Aug-07.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08760616756024105 3.975e-08  
q 2.951083690769936 1.3107e-07 au
tp 2456818.427379764940
(2014-Jun-09.92737977)
0.0001365 TDB
node 197.9727062838694 1.8007e-05 deg
peri 331.9145893470515 2.9949e-05 deg
i 12.67934568842196 4.4858e-06 deg
  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
 Jupiter MOID = 1.475 au 
 T_jup = 3.141 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.580051265403026E-15 -5.163481099280281E-15 5.129324253837591E-13 -1.32939068278824E-14 1.179800435456064E-13 -1.503770151231608E-15
q -5.163481099280281E-15 1.717821986814767E-14 -2.12770862135418E-12 4.334722786870025E-14 -4.633108602728993E-13 5.864250855153054E-15
tp 5.129324253837591E-13 -2.12770862135418E-12 1.863097397449635E-8 -1.31818068099417E-11 3.286247914193303E-9 1.334855286326198E-12
node -1.32939068278824E-14 4.334722786870025E-14 -1.31818068099417E-11 3.242519906587636E-10 -3.183715997374565E-10 -7.045145469385434E-12
peri 1.179800435456064E-13 -4.633108602728993E-13 3.286247914193303E-9 -3.183715997374565E-10 8.969402718788165E-10 7.215018780447152E-12
i -1.503770151231608E-15 5.864250855153054E-15 1.334855286326198E-12 -7.045145469385434E-12 7.215018780447152E-12 2.012205010622086E-11

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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