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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06520907643481132 4.8444e-08  
a 2.341607032283124 1.1712e-08 au
q 2.188913000334682 1.182e-07 au
i 6.093805600889083 5.7219e-06 deg
node 162.3844500264038 4.8124e-05 deg
peri 333.1166309706687 6.9126e-05 deg
M 294.1430791374258 4.9441e-05 deg
tp 2457639.924378129877
(2016-Sep-08.42437813)
0.00017999 JED
period 1308.788431008138
3.58
9.8193e-06
2.688e-08
d
yr
n .2750635560880515 2.0637e-09 deg/d
Q 2.494301064231566 1.2476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1340  
   data-arc span      23365 days (63.97 yr)  
   first obs. used      1951-12-27  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48224  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:06:10  

Additional Information
 Earth MOID = 1.20403 au 
 Jupiter MOID = 2.51269 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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