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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05841365428323953 3.1925e-08  
a 2.793615214169478 1.4015e-08 au
q 2.630429940848584 9.1418e-08 au
i 15.47026326486598 4.0948e-06 deg
node 137.7169530048085 1.398e-05 deg
peri 299.1551650869833 4.1067e-05 deg
M 60.16401342291506 3.7125e-05 deg
tp 2458715.475228344340
(2019-Aug-19.97522834)
0.00017613 TDB
period 1705.486585058107
4.67
1.2834e-05
3.514e-08
d
yr
n .2110834545132084 1.5885e-09 deg/d
Q 2.956800487490372 1.4834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2177  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1996-12-26  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:07:52  

Additional Information
 Earth MOID = 1.67984 au 
 Jupiter MOID = 2.18468 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

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