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20136 Eisenhart (1996 NA)
Classification: Inner Main-belt Asteroid          SPK-ID: 2020136
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06457559024794181 1.4954e-08  
a 1.930806102629902 5.2239e-09 au
q 1.806123158898248 2.9402e-08 au
i 24.259728889254 5.2895e-07 deg
node 103.7761531373446 2.2958e-06 deg
peri 158.9088456232882 1.2607e-05 deg
M 45.94936734737934 1.2422e-05 deg
tp 2459075.421271852677
(2020-Aug-13.92127185)
3.3631e-05 TDB
period 979.9556497180897
2.68
3.977e-06
1.089e-08
d
yr
n .3673635639567603 1.4909e-09 deg/d
Q 2.055489046361556 5.5612e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1568  
   data-arc span      8835 days (24.19 yr)  
   first obs. used      1996-07-08  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44892  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:13:59  

Additional Information
 Earth MOID = .793555 au 
 Jupiter MOID = 3.0862 au 
 T_jup = 3.803 
[ 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 15.02   n/a E2021B10  
rotation period rot_per 6.508 h n/a LCDB (Rev. 2020-October); 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. (2015) 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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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