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152117 (2004 RK242)
Classification: Main-belt Asteroid          SPK-ID: 2152117
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716158719332325 4.6835e-08  
a 3.117212990994734 3.6359e-08 au
q 2.582249765543573 1.5458e-07 au
i 1.009402311542275 5.413e-06 deg
node 120.5978951270921 0.00038541 deg
peri 166.7246112033529 0.00038592 deg
M 33.58376748181237 2.215e-05 deg
tp 2459012.968141887212
(2020-Jun-12.46814189)		 0.00012226 TDB
period 2010.24107724558
5.50		 3.5171e-05
9.629e-08		 d
yr
n .1790829985890398 3.1332e-09 deg/d
Q 3.652176216445895 4.2599e-08 au
   Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      6740 days (18.45 yr)  
   first obs. used      2002-02-08  
   last obs. used      2020-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 13:38:04  

Additional Information
 Earth MOID = 1.56394 au 
 Jupiter MOID = 1.51949 au 
 T_jup = 3.194 
[ 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 16.09   n/a E2021B55  
diameter diameter 3.835 km 0.532 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.048   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

152117 (2004 RK242)          Discovered 2004-Sep-10 by Spacewatch at Kitt Peak
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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