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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1137216956340954 3.0988e-08  
a 2.425869415786042 9.4113e-09 au
q 2.14999543243596 7.452e-08 au
i 6.569919833665529 4.4719e-06 deg
node 100.9366498292263 3.124e-05 deg
peri 300.6978611585519 3.7399e-05 deg
M 155.5947214082315 2.1044e-05 deg
tp 2458604.025455527465
(2019-Apr-30.52545553)
8.0044e-05 TDB
period 1380.065043766663
3.78
8.0311e-06
2.199e-08
d
yr
n .2608572701888301 1.518e-09 deg/d
Q 2.701743399136123 1.0482e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1030  
   data-arc span      8824 days (24.16 yr)  
   first obs. used      1996-12-13  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52686  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:33  

Additional Information
 Earth MOID = 1.16668 au 
 Jupiter MOID = 2.65616 au 
 T_jup = 3.493 
[ 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 15.35   n/a E2021B10  

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

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