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20136 Eisenhart (1996 NA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2020136
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06446096451638286 8.9137e-08  
a 1.930418785528792 1.0005e-08 au
q 1.805982128693061 1.7375e-07 au
i 24.25903359678508 8.584e-06 deg
node 103.7973994562419 1.7864e-05 deg
peri 158.8725342664773 5.412e-05 deg
M 178.0889057672105 5.2141e-05 deg
tp 2457115.870223585908
(2015-Apr-03.37022359)
0.00014127 JED
period 979.6607978327855
2.68
7.6162e-06
2.085e-08
d
yr
n .3674741306341902 2.8569e-09 deg/d
Q 2.054855442364522 1.065e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      6981 days (19.11 yr)  
   first obs. used      1996-07-08  
   last obs. used      2015-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50048  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:54:19  

Additional Information
 Earth MOID = .795084 au 
 Jupiter MOID = 3.08096 au 
 T_jup = 3.804 
[ 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 MPO240369  
rotation period rot_per 6.508 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

20136 Eisenhart           Discovered 1996 July 8 by P. G. Comba at Prescott.
Luther Pfahler Eisenhart (1876-1965) was a prolific American mathematician and professor at Princeton who made important contributions in Riemannian and non-Riemannian geometry.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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