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4320 Jarosewich (1981 EJ17)
Classification: Main-belt Asteroid          SPK-ID: 2004320
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137158264798184 2.3936e-08  
a 2.196565494442645 6.3912e-09 au
q 1.946781233825049 5.1707e-08 au
i 6.44664361934224 4.3245e-06 deg
node 190.9984841249652 2.3664e-05 deg
peri 277.4085611693399 3.1049e-05 deg
M 132.2394496211247 1.9479e-05 deg
tp 2458763.709489317763
(2019-Oct-07.20948932)
6.4238e-05 TDB
period 1189.089823771365
3.26
5.1897e-06
1.421e-08
d
yr
n .3027525699094873 1.3214e-09 deg/d
Q 2.446349755060242 7.118e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1661  
   data-arc span      24411 days (66.83 yr)  
   first obs. used      1953-08-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:12:07  

Additional Information
 Earth MOID = .975609 au 
 Jupiter MOID = 2.66188 au 
 T_jup = 3.652 
[ 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 15.01   n/a E2020-QM5  
diameter diameter 2.696 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4320 Jarosewich           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Eugene Jarosewich (b. 1926), research chemist emeritus at the Smithsonian Institution, has analyzed meteorites for more than 30 years and compiled one of the largest and most important sets of bulk chemical analyses of meteorites. These data are invaluable for deciphering geochemical processing of meteorites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

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Alternate Designations
 1981 EJ17 = 1976 UE13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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