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JPL Small-Body Database Browser
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20532 Benbilby (1999 RL64)
Classification: Main-belt Asteroid          SPK-ID: 2020532
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0964380640108686 3.3571e-08  
a 2.538438493302758 1.1552e-08 au
q 2.293636399397973 8.8612e-08 au
i 3.718464742385784 3.5791e-06 deg
node 48.6720603454531 6.2992e-05 deg
peri 5.91846746406404 6.7227e-05 deg
M 241.392347632674 2.5421e-05 deg
tp 2459087.196926049048
(2020-Aug-25.69692605)
0.00010511 TDB
period 1477.230936457895
4.04
1.0084e-05
2.761e-08
d
yr
n .2436992017397145 1.6636e-09 deg/d
Q 2.783240587207542 1.2666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1359  
   data-arc span      15591 days (42.69 yr)  
   first obs. used      1977-03-12  
   last obs. used      2019-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5023  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:47  

Additional Information
 Earth MOID = 1.30455 au 
 Jupiter MOID = 2.50603 au 
 T_jup = 3.437 
[ 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 14.2   n/a MPO502321  
diameter diameter 3.649 km 0.603 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20532 Benbilby           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
R. Ben Bilby mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the C.W. Ruckel Middle School, Niceville, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041028/MPCPages.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 RL64 = 1977 EE3 = 1998 KF24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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