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268234 (2005 EA220)
Classification: Main-belt Asteroid          SPK-ID: 2268234
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 .2613532291939029 7.8784e-08  
a 3.193612899606823 7.3648e-08 au
q 2.358951855499276 2.912e-07 au
i 24.26926510485132 1.6724e-05 deg
node 330.8065479092717 1.5652e-05 deg
peri 266.204166894024 5.9349e-05 deg
M 206.13925124244 6.8868e-05 deg
tp 2459891.437375702800
(2022-Nov-07.93737570)
0.00042581 TDB
period 2084.595699962421
5.71
7.2109e-05
1.974e-07
d
yr
n .1726953576688706 5.9738e-09 deg/d
Q 4.02827394371437 9.2896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      203  
   data-arc span      7643 days (20.93 yr)  
   first obs. used      1999-02-23  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59286  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 13:02:11  

Additional Information
 Earth MOID = 1.4949 au 
 Jupiter MOID = 1.75695 au 
 T_jup = 3.008 
[ 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 15.1   n/a MPO382363  
diameter diameter 4.700 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

268234 (2005 EA220)          Discovered 2005-Mar-10 by Siding Spring Survey at Siding Spring
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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