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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02457461045140215 3.4877e-08  
a 3.007778853189882 1.567e-08 au
q 2.933863859548776 1.1118e-07 au
i 9.564299468784974 5.1837e-06 deg
node 225.0971796336036 2.834e-05 deg
peri 225.1127465088146 0.00014418 deg
M 283.6941060564994 0.00014251 deg
tp 2459604.352581306637
(2022-Jan-24.85258131)
0.00075523 TDB
period 1905.317161712811
5.22
1.489e-05
4.077e-08
d
yr
n .1889449206852118 1.4766e-09 deg/d
Q 3.081693846830989 1.6055e-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-Apr-13 02:21:08  

Additional Information
 Earth MOID = 1.95575 au 
 Jupiter MOID = 2.00623 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 13.45   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2127-Nov-04 20:03 00:05 Thisb 0.0345667171362886 0.034564184392317 0.0345692685482532 3.66660614827857 3.66660609448228 2498238.335716991 4.89489893828525 1392.64939616664 51.749309403809 -85.2373399043916 99514.2543037757 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 02:21:29 2021-Apr-13 02:21

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