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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06436852568426049 4.8276e-08  
a 1.93049684672718 5.4599e-09 au
q 1.806233610865238 9.4152e-08 au
i 24.26123596073159 4.1164e-06 deg
node 103.7766428385456 1.226e-05 deg
peri 159.0079017466565 3.7574e-05 deg
M 332.3843917278253 3.6092e-05 deg
tp 2459075.654360657438
(2020-Aug-14.15436066)
9.823e-05 TDB
period 979.7202208990857
2.68
4.1563e-06
1.138e-08
d
yr
n .3674518421898338 1.5589e-09 deg/d
Q 2.054760082589123 5.8113e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      8745 days (23.94 yr)  
   first obs. used      1996-07-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43996  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:39:41  

Additional Information
 Earth MOID = .795476 au 
 Jupiter MOID = 3.08777 au 
 T_jup = 3.804 
[ 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 14.9   n/a MPO400203  
rotation period rot_per 6.508 h n/a LCDB (Rev. 2019-August); 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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