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305508 (2008 EE146)
Classification: Outer Main-belt Asteroid          SPK-ID: 2305508
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03600630507639468 6.5392e-08  
a 3.226370222227343 4.0014e-08 au
q 3.11020055171643 2.0464e-07 au
i 8.058670968704201 5.1422e-06 deg
node 140.8168736053755 4.776e-05 deg
peri 50.90358082954147 9.6383e-05 deg
M 35.79637225995962 8.2586e-05 deg
tp 2458790.022225541768
(2019-Nov-02.52222554)
0.00048537 TDB
period 2116.750777276918
5.80
3.9379e-05
1.078e-07
d
yr
n .1700719819567611 3.1639e-09 deg/d
Q 3.342539892738256 4.1455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      5726 days (15.68 yr)  
   first obs. used      2004-08-22  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:59:56  

Additional Information
 Earth MOID = 2.11929 au 
 Jupiter MOID = 1.64291 au 
 T_jup = 3.171 
[ 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 15.5   n/a MPO471208  
diameter diameter 7.031 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.023   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

305508 (2008 EE146)          Discovered 2008-Mar-11 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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