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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .148387380756498 5.6915e-08  
a 3.034545799776621 2.5092e-08 au
q 2.584257496762135 1.7651e-07 au
i 8.20539887634318 5.6336e-06 deg
node 295.4061112628573 4.0519e-05 deg
peri 39.2019969712489 4.377e-05 deg
M 273.1255089028216 1.8608e-05 deg
tp 2459466.438658055777
(2021-Sep-08.93865806)		 0.00010247 TDB
period 1930.807476183623
5.29		 2.3948e-05
6.557e-08		 d
yr
n .1864504899844107 2.3126e-09 deg/d
Q 3.484834102791106 2.8815e-08 au
   Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2000-09-01  
   last obs. used      2020-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:30:41  

Additional Information
 Earth MOID = 1.58 au 
 Jupiter MOID = 1.88829 au 
 T_jup = 3.210 
[ 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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