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20174 Eisenstein (1996 XD20)
Classification: Main-belt Asteroid          SPK-ID: 2020174
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .112396897762456 5.2976e-08  
a 2.426251517931624 1.4971e-08 au
q 2.153548374124659 1.3052e-07 au
i 6.568464164438726 5.9309e-06 deg
node 101.0316941072366 4.9569e-05 deg
peri 300.144070152659 5.629e-05 deg
M 46.79168756789836 2.8048e-05 deg
tp 2457221.081027673342
(2015-Jul-17.58102767)
0.00010705 JED
period 1380.391120620954
3.78
1.2776e-05
3.498e-08
d
yr
n .260795650321235 2.4138e-09 deg/d
Q 2.698954661738588 1.6653e-08 au
  Orbit Determination Parameters
   # obs. used (total)      590  
   data-arc span      6940 days (19.00 yr)  
   first obs. used      1996-12-13  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57889  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:44:34  

Additional Information
 Earth MOID = 1.16985 au 
 Jupiter MOID = 2.66595 au 
 T_jup = 3.493 
[ 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 15.2 mag n/a MPO263527  

20174 Eisenstein           Discovered 1996 Dec. 13 by P. G. Comba at Prescott.
Ferdinand Gotthold Max Eisenstein (1823-1852) was a brilliant German mathematician who published research on elliptic functions, cyclotomy, quadratic and biquadratic residues, as well as on cubic and biquadratic reciprocity laws.
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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