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4565 Grossman (1981 EZ17)
Classification: Main-belt Asteroid          SPK-ID: 2004565
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127630263224265 3.334e-08  
a 2.568454456357508 9.9427e-09 au
q 2.240641938013063 8.6639e-08 au
i 14.72695700504411 4.1813e-06 deg
node 174.4128773086619 1.1171e-05 deg
peri 37.8273776388991 1.8272e-05 deg
M 159.5461874434577 1.4805e-05 deg
tp 2458334.168782106656
(2018-Aug-03.66878211)
6.0593e-05 TDB
period 1503.50968760451
4.12
8.7303e-06
2.39e-08
d
yr
n .2394397608262674 1.3903e-09 deg/d
Q 2.896266974701953 1.1212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2438  
   data-arc span      24079 days (65.92 yr)  
   first obs. used      1954-11-24  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41748  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:50:36  

Additional Information
 Earth MOID = 1.25453 au 
 Jupiter MOID = 2.09268 au 
 T_jup = 3.374 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO347560  
diameter diameter 7.360 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.7429 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.271   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4565 Grossman           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Chairman of the Department of Geophysical Sciences at the University of Chicago, Lawrence Grossman (b. 1946) has spent his career studying calcium-aluminum inclusions (CAIs) in carbonaceous chondrites. He was among the first to propose that these minerals condensed from gases in the early solar system.
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

Alternate Designations
 1981 EZ17 = 1981 ED 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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