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90510 (2004 EW20)
Classification: Main-belt Asteroid          SPK-ID: 2090510
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2952044679098665 4.0117e-08  
a 3.140926379962119 2.7413e-08 au
q 2.213710879221339 1.2611e-07 au
i 25.03766867393006 5.1813e-06 deg
node 139.0715926651529 1.3803e-05 deg
peri 151.2712595582161 1.7342e-05 deg
M 283.6863516738374 1.3946e-05 deg
tp 2459431.507451079070
(2021-Aug-05.00745108)
8.2903e-05 TDB
period 2033.223227977567
5.57
2.6618e-05
7.288e-08
d
yr
n .1770587680911405 2.3179e-09 deg/d
Q 4.0681418807029 3.5505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      8581 days (23.49 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54305  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:13:03  

Additional Information
 Earth MOID = 1.22319 au 
 Jupiter MOID = 1.38415 au 
 T_jup = 3.002 
[ 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 14.2   n/a MPO385375  
diameter diameter 7.745 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90510 (2004 EW20)          Discovered 2004-Mar-15 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2004 EW20 = 2003 EY15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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