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100198 (1994 EA1)
Classification: Main-belt Asteroid          SPK-ID: 2100198
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2460002658916752 3.6887e-08  
a 3.137659854057424 1.832e-08 au
q 2.365794695681663 1.1978e-07 au
i 15.80357521728079 4.3151e-06 deg
node 353.460155869879 1.5414e-05 deg
peri 84.38000692175521 2.1172e-05 deg
M 348.4945983802347 1.0143e-05 deg
tp 2459265.379351588127
(2021-Feb-19.87935159)
5.7099e-05 TDB
period 2030.052260983334
5.56
1.778e-05
4.868e-08
d
yr
n .1773353360989929 1.5532e-09 deg/d
Q 3.909525012433185 2.2827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      785  
   data-arc span      9812 days (26.86 yr)  
   first obs. used      1994-03-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46781  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:24:40  

Additional Information
 Earth MOID = 1.44212 au 
 Jupiter MOID = 1.76149 au 
 T_jup = 3.107 
[ 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 15.01   n/a E2021B55  
diameter diameter 2.926 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.298   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100198 (1994 EA1)          Discovered 1994-Mar-09 by Vagnozzi, A. at Stroncone
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1994 EA1 = 2003 SL105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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