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6816 Barbcohen (1981 EB28)
Classification: Main-belt Asteroid          SPK-ID: 2006816
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649696728490014 4.5711e-08  
a 2.289208965792846 1.1916e-08 AU
q 1.911558911622999 1.0451e-07 AU
i 2.099374257809427 6.3627e-06 deg
node 138.6751904495312 0.00015178 deg
peri 109.9519224797421 0.00015346 deg
M 155.1483331426726 2.361e-05 deg
tp 2456255.280729432621
(2012-Nov-23.78072943)
8.0992e-05 JED
period 1265.105034829866
3.46
9.8782e-06
2.705e-08
d
yr
n .2845613526851654 2.2219e-09 deg/d
Q 2.666859019962692 1.3882e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      925  
   data-arc span      12981 days (35.54 yr)  
   first obs. used      1978-07-07  
   last obs. used      2014-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53501  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:48:40  

Additional Information
 Earth MOID = .898861 AU 
 T_jup = 3.581 
[ 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 14.8 mag n/a MPO267735  

6816 Barbcohen           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Barbara A. Cohen (b. 1971) is a planetary scientist at the University of New Mexico. Her work on impact melt clasts in lunar meteorite breccias has provided critical tests of the late heavy bombardment hypothesis for the moon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1981 EB28 = 1978 NV 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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