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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .112602328597746 5.6233e-08  
a 2.426734163932188 1.645e-08 AU
q 2.15347824618572 1.4046e-07 AU
i 6.568487488153325 5.9447e-06 deg
node 101.0352624371092 5.1779e-05 deg
peri 300.0904629341618 5.8725e-05 deg
M 302.5311147718729 2.9857e-05 deg
tp 2457220.925586647125
(2015-Jul-17.42558665)
0.0001154 JED
period 1380.803035903102
3.78
1.404e-05
3.844e-08
d
yr
n .2607178508733109 2.651e-09 deg/d
Q 2.699990081678657 1.8302e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      6462 days (17.69 yr)  
   first obs. used      1996-12-13  
   last obs. used      2014-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58632  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:12:54  

Additional Information
 Earth MOID = 1.17075 AU 
 T_jup = 3.492 
[ 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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