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8069 Benweiss (1981 EF30)
Classification: Main-belt Asteroid          SPK-ID: 2008069
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06525733094334825 4.6873e-08  
a 2.341610540067373 1.1449e-08 au
q 2.188803286113764 1.148e-07 au
i 6.093807342042827 5.3295e-06 deg
node 162.383918223787 4.7935e-05 deg
peri 333.1750887317372 6.8712e-05 deg
M 349.1063888695851 4.9038e-05 deg
tp 2457640.104067378807
(2016-Sep-08.60406738)
0.00017832 JED
period 1308.791371904561
3.58
9.5986e-06
2.628e-08
d
yr
n .2750629380113698 2.0173e-09 deg/d
Q 2.494417794020982 1.2196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1407  
   data-arc span      23455 days (64.22 yr)  
   first obs. used      1951-12-27  
   last obs. used      2016-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48793  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:58:45  

Additional Information
 Earth MOID = 1.20259 au 
 Jupiter MOID = 2.51226 au 
 T_jup = 3.553 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO263421  

8069 Benweiss           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Benjamin P. Weiss (b. 1973) is a professor of planetary Science at MIT. He leads a laboratory for measuring magnetic properties of meteorites, where detection of remnant paleomagnetic fields has implications for the early heating, melting, and differentiation histories of minor-planet parent bodies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

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Alternate Designations
 1981 EF30 = 1938 EK1 = 1990 WL1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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