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6284 Borisivanov (1981 EM19)
Classification: Main-belt Asteroid          SPK-ID: 2006284
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01304997853455134 4.814e-08  
a 2.855345832644591 1.326e-08 au
q 2.818083630819858 1.3589e-07 au
i 1.242595068882645 4.5588e-06 deg
node 333.5466938694147 0.00017905 deg
peri 50.36294113434563 0.00023764 deg
M 113.431654991969 0.00015499 deg
tp 2458045.212024167616
(2017-Oct-18.71202417)
0.00075909 TDB
period 1762.327026911592
4.82
1.2276e-05
3.361e-08
d
yr
n .2042753668885653 1.423e-09 deg/d
Q 2.892608034469323 1.3433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1931  
   data-arc span      13974 days (38.26 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50868  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:16:19  

Additional Information
 Earth MOID = 1.81742 au 
 Jupiter MOID = 2.14125 au 
 T_jup = 3.303 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO439124  
diameter diameter 7.287 km 0.258 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6284 Borisivanov           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Boris Ivanov (b. 1948) of the Institute for Dynamics of Geospheres in Moscow has made many contributions to the geological and geophysical study of terrestrial impact craters through explosion simulations and computer modeling. He has also clarified the physical processes that determine planetary crater populations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1981 EM19 = 1991 GA8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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