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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .113578853376405 3.0993e-08  
a 2.426290823330353 9.4198e-09 au
q 2.150715493658797 7.4545e-08 au
i 6.569951536034204 4.4815e-06 deg
node 100.9387590761821 3.1252e-05 deg
peri 300.7604919085468 3.7443e-05 deg
M 103.3668559998658 2.1033e-05 deg
tp 2458604.138451388099
(2019-Apr-30.63845139)
8.0253e-05 TDB
period 1380.424664366978
3.78
8.0391e-06
2.201e-08
d
yr
n .2607893130952462 1.5187e-09 deg/d
Q 2.701866153001908 1.049e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1026  
   data-arc span      8537 days (23.37 yr)  
   first obs. used      1996-12-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52717  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:09:37  

Additional Information
 Earth MOID = 1.16836 au 
 Jupiter MOID = 2.65525 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 15.2   n/a MPO416923  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2009-Dec-18 21:56 < 00:01 Ceres 0.0310808359915525 0.0310795718926699 0.0310821000926427 2.4624681491389 2.46246262926903 2455184.414121582 0.89018919278879 63.6905368270369 39.5301120337614 -18.8502829975506 77163.3136128767 T 22 CATAB v2.0f-lin.ifort 2020-May-20 05:09:48 2020-May-20 05:09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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