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JPL Small-Body Database Browser
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20502 (1999 RG11)
Classification: Main-belt Asteroid          SPK-ID: 2020502
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05835755845745948 3.3164e-08  
a 2.793681211205175 1.4878e-08 au
q 2.630648796610763 9.6196e-08 au
i 15.46837475304684 4.2279e-06 deg
node 137.7234942125829 1.4953e-05 deg
peri 299.3927828942379 4.246e-05 deg
M 335.5159578058165 3.8906e-05 deg
tp 2458716.496347895194
(2019-Aug-20.99634790)
0.00018431 TDB
period 1705.547021651108
4.67
1.3624e-05
3.73e-08
d
yr
n .2110759747048725 1.6861e-09 deg/d
Q 2.956713625799587 1.5746e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2011  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1996-12-26  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43136  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 00:07:53  

Additional Information
 Earth MOID = 1.67994 au 
 Jupiter MOID = 2.18546 au 
 T_jup = 3.273 
[ 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 13.1   n/a MPO502321  
diameter diameter 14.430 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20502 (1999 RG11)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RG11 = 1998 KD52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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