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JPL Small-Body Database Browser
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5345 Boynton (1981 EY8)
Classification: Main-belt Asteroid          SPK-ID: 2005345
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350728287245105 4.0975e-08  
a 2.762990903243071 1.4734e-08 au
q 2.113486815877632 1.1425e-07 au
i 6.448561136312192 5.6525e-06 deg
node 304.0872486198533 3.6644e-05 deg
peri 74.48539179250797 3.8638e-05 deg
M 341.9868673398603 1.2633e-05 deg
tp 2459084.437176488060
(2020-Aug-22.93717649)
5.9189e-05 TDB
period 1677.519624477543
4.59
1.3418e-05
3.674e-08
d
yr
n .2146025565048877 1.7165e-09 deg/d
Q 3.41249499060851 1.8197e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      14913 days (40.83 yr)  
   first obs. used      1978-07-07  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55331  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:03:07  

Additional Information
 Earth MOID = 1.12632 au 
 Jupiter MOID = 2.12557 au 
 T_jup = 3.291 
[ 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 14.0   n/a MPO445307  
diameter diameter 8.824 km 0.398 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5345 Boynton           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
William Boynton (b. 1944), professor of cosmochemistry and geochemistry at the University of Arizona, has measured elemental abundances in meteorites as a means of probing the early history of the solar system. He is the team leader for the \gamma -ray spectrometer on the Mars Odyssey spacecraft.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1981 EY8 = 1983 SD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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