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100746 (1998 ED4)
Classification: Main-belt Asteroid          SPK-ID: 2100746
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1694898822809435 6.73e-08  
a 2.310394636521124 1.0581e-08 au
q 1.918806121554635 1.5816e-07 au
i 2.499023467676358 5.4908e-06 deg
node 131.932186418114 0.00013783 deg
peri 90.42414537894435 0.00013932 deg
M 82.49563491193305 2.2749e-05 deg
tp 2458706.561721046176
(2019-Aug-11.06172105)
8.0048e-05 TDB
period 1282.707630971516
3.51
8.8119e-06
2.413e-08
d
yr
n .2806563173927155 1.928e-09 deg/d
Q 2.701983151487612 1.2375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      372  
   data-arc span      10170 days (27.84 yr)  
   first obs. used      1992-09-23  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 09:04:01  

Additional Information
 Earth MOID = .912246 au 
 Jupiter MOID = 2.27508 au 
 T_jup = 3.564 
[ 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 16.5   n/a MPO474882  

100746 (1998 ED4)          Discovered 1998-Mar-02 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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