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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02457460975833119 3.4883e-08  
a 3.007778855418797 1.5677e-08 au
q 2.93386386380752 1.112e-07 au
i 9.564299441754379 5.1939e-06 deg
node 225.0971801730683 2.8407e-05 deg
peri 225.1127492256307 0.00014454 deg
M 283.6941027574428 0.00014286 deg
tp 2459604.352599215964
(2022-Jan-24.85259922)		 0.00075708 TDB
period 1905.317163830714
5.22		 1.4896e-05
4.078e-08		 d
yr
n .1889449204751853 1.4772e-09 deg/d
Q 3.081693847030075 1.6062e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1877  
   data-arc span      14123 days (38.67 yr)  
   first obs. used      1982-05-15  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:36:30  

Additional Information
 Earth MOID = 1.95575 au 
 Jupiter MOID = 2.00623 au 
 T_jup = 3.229 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457446.5 (2016-Feb-28.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02385496866124861 3.6936e-08  
q 2.937656925197011 1.1846e-07 au
tp 2457646.878307268777
(2016-Sep-15.37830727)		 0.00076328 TDB
node 225.1994731510226 2.8331e-05 deg
peri 215.6348403882137 0.00014677 deg
i 9.574991678181515 5.2072e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1877  
   data-arc span      14123 days (38.67 yr)  
   first obs. used      1982-05-15  
   last obs. used      2021-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:36:30  

Additional Information
 Jupiter MOID = 2.00623 au 
 T_jup = 3.229 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.364298327210596E-15 -4.343749113126009E-15 -9.63220475847846E-12 -2.507575598669687E-15 -1.741589335542058E-12 -1.274755336512576E-15
q -4.343749113126009E-15 1.403290756412694E-14 3.304815796345051E-11 9.397099263598767E-15 5.990803036995272E-12 4.728767560145921E-15
tp -9.63220475847846E-12 3.304815796345051E-11 5.826034322337055E-7 7.986913223988377E-11 1.099444143710306E-7 8.211110953365053E-11
node -2.507575598669687E-15 9.397099263598767E-15 7.986913223988377E-11 8.026478908353642E-10 -7.759220643871628E-10 -9.072464158571276E-11
peri -1.741589335542058E-12 5.990803036995272E-12 1.099444143710306E-7 -7.759220643871628E-10 2.15400665212359E-8 1.049294469734125E-10
i -1.274755336512576E-15 4.728767560145921E-15 8.211110953365053E-11 -9.072464158571276E-11 1.049294469734125E-10 2.711541241160937E-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 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

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