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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08636026942654672 3.99e-08  
a 3.235268218291897 2.0992e-08 au
q 2.955869583293065 1.3132e-07 au
i 12.67847493464901 4.7595e-06 deg
node 197.9378806873433 1.9028e-05 deg
peri 332.6564933876163 3.2073e-05 deg
M 8.708667112223363 2.5617e-05 deg
tp 2458949.082251779303
(2020-Apr-09.58225178)
0.00015119 TDB
period 2125.51348224921
5.82
2.0687e-05
5.664e-08
d
yr
n .1693708381557991 1.6484e-09 deg/d
Q 3.514666853290729 2.2805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1738  
   data-arc span      10526 days (28.82 yr)  
   first obs. used      1991-03-11  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51266  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:54:57  

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

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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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