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100549 (1997 EK38)
Classification: Main-belt Asteroid          SPK-ID: 2100549
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707382544756008 4.4598e-08  
a 3.065808799962453 2.6609e-08 au
q 2.542357956900927 1.354e-07 au
i 1.64635739585347 5.3693e-06 deg
node 139.9804372798067 0.00020451 deg
peri 296.305358008946 0.00020562 deg
M 173.1477894510155 2.3896e-05 deg
tp 2458057.459211804461
(2017-Oct-30.95921180)
0.0001221 TDB
period 1960.722021498513
5.37
2.5527e-05
6.989e-08
d
yr
n .1836058329802734 2.3904e-09 deg/d
Q 3.589259643023978 3.1153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      689  
   data-arc span      8129 days (22.26 yr)  
   first obs. used      1997-02-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54517  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:34:35  

Additional Information
 Earth MOID = 1.55817 au 
 Jupiter MOID = 1.67905 au 
 T_jup = 3.209 
[ 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 14.8   n/a MPO264056  

100549 (1997 EK38)          Discovered 1997-Mar-05 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 EK38 = 2000 QX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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