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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169571317094997 4.9542e-08  
a 2.309710881790757 9.3399e-09 au
q 1.918050165456852 1.1423e-07 au
i 2.499213361849265 5.2451e-06 deg
node 131.9353267946238 0.00012195 deg
peri 90.31843198560395 0.00012344 deg
M 138.7523153941323 2.1325e-05 deg
tp 2458706.334302218631
(2019-Aug-10.83430222)
7.4724e-05 TDB
period 1282.138252583105
3.51
7.7769e-06
2.129e-08
d
yr
n .2807809526583527 1.7031e-09 deg/d
Q 2.701371598124663 1.0924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      10310 days (28.23 yr)  
   first obs. used      1992-09-23  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5308  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:26:05  

Additional Information
 Earth MOID = .910372 au 
 Jupiter MOID = 2.2744 au 
 T_jup = 3.565 
[ 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 16.54   n/a E2021B55  

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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