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101926 (1999 RT18)
Classification: Main-belt Asteroid          SPK-ID: 2101926
[ 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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2841666541822056 5.255e-08  
a 3.117498226375269 2.1359e-08 au
q 2.231609185967248 1.6695e-07 au
i 9.032309509276544 5.9458e-06 deg
node 339.0026603215567 3.0821e-05 deg
peri 22.95374610100136 3.2223e-05 deg
M 270.7449879418444 1.4265e-05 deg
tp 2459498.968663906932
(2021-Oct-11.46866391)		 8.3757e-05 TDB
period 2010.516999197454
5.50		 2.0662e-05
5.657e-08		 d
yr
n .1790584213631134 1.8402e-09 deg/d
Q 4.00338726678329 2.7429e-08 au
   Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      7652 days (20.95 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54604  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:45  

Additional Information
 Earth MOID = 1.23161 au 
 Jupiter MOID = 1.48796 au 
 T_jup = 3.135 
[ 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 14.1   n/a MPO469026  
diameter diameter 5.314 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.172   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101926 (1999 RT18)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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