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JPL Small-Body Database Browser
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20520 (1999 RC38)
Classification: Main-belt Asteroid          SPK-ID: 2020520
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1200249686021772 3.4509e-08  
a 2.629699765781912 1.2043e-08 au
q 2.314070133960786 9.0704e-08 au
i 13.37455754947983 5.3484e-06 deg
node 190.1010764061672 1.5807e-05 deg
peri 289.416979859438 2.7289e-05 deg
M 121.947698263471 2.1875e-05 deg
tp 2458072.870845038550
(2017-Nov-15.37084504)
9.4382e-05 TDB
period 1557.606240141884
4.26
1.07e-05
2.93e-08
d
yr
n .2311238814549223 1.5877e-09 deg/d
Q 2.945329397603039 1.3489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2028  
   data-arc span      31613 days (86.55 yr)  
   first obs. used      1933-03-28  
   last obs. used      2019-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46125  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:23:44  

Additional Information
 Earth MOID = 1.36772 au 
 Jupiter MOID = 2.19696 au 
 T_jup = 3.352 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5   n/a MPO439236  
diameter diameter 12.214 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.137   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

20520 (1999 RC38)          Discovered 1999-Sep-13 by Korlevic, K. at Visnjan
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RC38 = 1933 FW1 = 1965 UM1 = 1982 SB12 = 1982 ST4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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