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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1215407655855647 1.8403e-08  
a 2.626589639104989 1.0196e-08 au
q 2.307351923489057 5.1401e-08 au
i 13.37984828016256 6.7847e-07 deg
node 189.9699475183661 3.888e-06 deg
peri 289.8685245659654 9.0675e-06 deg
M 260.3540273825908 1.2606e-05 deg
tp 2459630.872008401149
(2022-Feb-20.37200840)
5.547e-05 TDB
period 1554.843803063498
4.26
9.0531e-06
2.479e-08
d
yr
n .2315345112420261 1.3481e-09 deg/d
Q 2.945827354720922 1.1435e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2697  
   data-arc span      32098 days (87.88 yr)  
   first obs. used      1933-03-28  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .422  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:23:16  

Additional Information
 Earth MOID = 1.36034 au 
 Jupiter MOID = 2.19389 au 
 T_jup = 3.353 
[ 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 12.60   n/a E2021B10  
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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