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4177 Kohman (1987 SS1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2861812992803319 5.7252e-08  
a 3.301138443249361 1.6439e-08 au
q 2.356414354456007 1.8912e-07 au
i 17.17304673937327 5.9119e-06 deg
node 210.6863247146549 1.4685e-05 deg
peri 157.8166657572424 1.6657e-05 deg
M 88.88091776901398 6.5974e-06 deg
tp 2458059.621070025258
(2017-Nov-02.12107003)
3.8692e-05 TDB
period 2190.756122668999
6.00
1.6364e-05
4.48e-08
d
yr
n .1643268259186293 1.2275e-09 deg/d
Q 4.245862532042715 2.1144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1425  
   data-arc span      12723 days (34.83 yr)  
   first obs. used      1984-05-25  
   last obs. used      2019-03-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44941  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:31:25  

Additional Information
 Earth MOID = 1.36515 au 
 Jupiter MOID = 1.29673 au 
 T_jup = 3.035 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO384790  
diameter diameter 11.059 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.120   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4177 Kohman           Discovered 1987 Sept. 21 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Truman Paul Kohman (b. 1916), emeritus professor of nuclear chemistry at Carnegie-Mellon University, is codiscoverer of 26Al, an isotope that has given important information about meteorites and the early history of the solar system. He is also an ardent amateur astronomer and teacher.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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