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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02470201497059745 3.486e-08  
a 3.00788180757315 1.5579e-08 au
q 2.933581066132691 1.1111e-07 au
i 9.564146573135822 5.1837e-06 deg
node 225.0970888379992 2.834e-05 deg
peri 225.2019148797928 0.00014353 deg
M 320.6519051988206 0.00014194 deg
tp 2459604.762360092374
(2022-Jan-25.26236009)
0.00075176 TDB
period 1905.414989266711
5.22
1.4804e-05
4.053e-08
d
yr
n .188935219901122 1.4679e-09 deg/d
Q 3.08218254901361 1.5964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1900  
   data-arc span      14148 days (38.74 yr)  
   first obs. used      1982-05-15  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46489  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:57:38  

Additional Information
 Earth MOID = 1.95583 au 
 Jupiter MOID = 2.00515 au 
 T_jup = 3.229 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.45   n/a E2021B10  
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

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