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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1126831427026936 6.1192e-08  
a 2.426822010686624 1.6961e-08 AU
q 2.153360079742385 1.5078e-07 AU
i 6.568663750085964 6.0534e-06 deg
node 101.0361083517174 5.8122e-05 deg
peri 300.0769905598463 6.4198e-05 deg
M 250.4111413750393 2.9648e-05 deg
tp 2457220.857903831609
(2015-Jul-17.35790383)
0.00011539 JED
period 1380.878013313953
3.78
1.4477e-05
3.964e-08
d
yr
n .2607036946993169 2.7331e-09 deg/d
Q 2.700283941630862 1.8873e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      6409 days (17.55 yr)  
   first obs. used      1996-12-13  
   last obs. used      2014-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5911  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:44:19  

Additional Information
 Earth MOID = 1.16973 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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