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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1126023233841523 5.9181e-08  
a 2.426734163071496 1.6771e-08 AU
q 2.15347825807395 1.4656e-07 AU
i 6.568486941673436 6.0225e-06 deg
node 101.0352742160329 5.5707e-05 deg
peri 300.0904518256472 6.2084e-05 deg
M 302.5311147433022 2.9866e-05 deg
tp 2457220.925586639442
(2015-Jul-17.42558664)
0.00011544 JED
period 1380.803035168507
3.78
1.4314e-05
3.919e-08
d
yr
n .2607178510120144 2.7027e-09 deg/d
Q 2.699990068069043 1.866e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      6434 days (17.62 yr)  
   first obs. used      1996-12-13  
   last obs. used      2014-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59171  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:34:03  

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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