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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0651505355012226 5.8285e-08  
a 2.342131731338509 1.3936e-08 AU
q 2.189540594827399 1.3687e-07 AU
i 6.093368482891149 6.9882e-06 deg
node 162.383308534852 4.9029e-05 deg
peri 332.8977244998229 7.0163e-05 deg
M 184.3673247072834 5.0986e-05 deg
tp 2457639.231331133240
(2016-Sep-07.73133113)
0.00018675 JED
period 1309.228358702236
3.58
1.1685e-05
3.199e-08
d
yr
n .2749711290678484 2.4542e-09 deg/d
Q 2.494722867849618 1.4844e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1141  
   data-arc span      22440 days (61.44 yr)  
   first obs. used      1951-12-27  
   last obs. used      2013-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50247  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:09:39  

Additional Information
 Earth MOID = 1.20505 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

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