Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06514324925075708 6.1975e-08  
a 2.342078257937138 1.2307e-08 AU
q 2.18950767021556 1.4549e-07 AU
i 6.092980621299274 7.2911e-06 deg
node 162.3873633018871 5.0973e-05 deg
peri 332.820323445164 7.2799e-05 deg
M 129.4553614213237 5.2179e-05 deg
tp 2456329.719927646480
(2013-Feb-06.21992765)
0.00018912 JED
period 1309.183522308337
3.58
1.0319e-05
2.825e-08
d
yr
n .2749805461691515 2.1675e-09 deg/d
Q 2.494648845658716 1.3109e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1138  
   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      .54661  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 15:52:11  

Additional Information
 Earth MOID = 1.20473 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-20 23:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin