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18051 (1999 RU196)
Classification: Main-belt Asteroid          SPK-ID: 2018051
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02438059111237139 3.5256e-08  
a 3.008628921805423 1.6013e-08 au
q 2.93527677025403 1.1205e-07 au
i 9.563422094375284 5.2295e-06 deg
node 225.1049583149565 2.8821e-05 deg
peri 224.4905311290837 0.00014568 deg
M 246.5091164742196 0.00014389 deg
tp 2459601.410568425918
(2022-Jan-21.91056843)
0.00076328 TDB
period 1906.124949535614
5.22
1.5217e-05
4.166e-08
d
yr
n .1888648485964712 1.5078e-09 deg/d
Q 3.081981073356815 1.6403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1754  
   data-arc span      14042 days (38.44 yr)  
   first obs. used      1982-05-15  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:17:14  

Additional Information
 Earth MOID = 1.95739 au 
 Jupiter MOID = 2.007 au 
 T_jup = 3.229 
[ 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 13.4   n/a MPO358805  
diameter diameter 6.639 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18051 (1999 RU196)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 RU196 = 1982 JT2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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