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146121 (2000 RR18)
Classification: Main-belt Asteroid          SPK-ID: 2146121
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485649585975001 5.6871e-08  
a 3.036051510683639 2.4687e-08 au
q 2.585000643699046 1.7682e-07 au
i 8.205206621501324 5.6007e-06 deg
node 295.4066688008045 3.999e-05 deg
peri 39.03100668731685 4.316e-05 deg
M 310.5811003399501 1.8707e-05 deg
tp 2459465.748356081562
(2021-Sep-08.24835608)		 0.00010196 TDB
period 1932.244725119925
5.29		 2.3568e-05
6.453e-08		 d
yr
n .1863118037378296 2.2724e-09 deg/d
Q 3.487102377668232 2.8355e-08 au
   Orbit Determination Parameters
   # obs. used (total)      401  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2000-09-01  
   last obs. used      2020-05-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:59:48  

Additional Information
 Earth MOID = 1.57876 au 
 Jupiter MOID = 1.88528 au 
 T_jup = 3.209 
[ 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 14.9   n/a MPO426922  
diameter diameter 7.457 km 0.285 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146121 (2000 RR18)          Discovered 2000-Sep-01 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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