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90500 (2004 EG4)
Classification: Main-belt Asteroid          SPK-ID: 2090500
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1074824113998074 4.2498e-08  
a 3.076334130902236 2.527e-08 au
q 2.745682320241333 1.3275e-07 au
i 15.30404383102371 5.0017e-06 deg
node 53.38609945048036 1.8537e-05 deg
peri 192.5578620374577 3.0319e-05 deg
M 13.27571081508443 2.496e-05 deg
tp 2459323.821833005605
(2021-Apr-19.32183301)
0.00013651 TDB
period 1970.827813472195
5.40
2.4284e-05
6.649e-08
d
yr
n .182664359381936 2.2507e-09 deg/d
Q 3.40698594156314 2.7986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      998  
   data-arc span      13971 days (38.25 yr)  
   first obs. used      1983-05-08  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47791  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:00:53  

Additional Information
 Earth MOID = 1.73514 au 
 Jupiter MOID = 1.60751 au 
 T_jup = 3.166 
[ 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 14.18   n/a E2021B10  
diameter diameter 5.844 km 0.263 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.156   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90500 (2004 EG4)          Discovered 2004-Mar-11 by NEAT at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 2004 EG4 = 1983 JT1 = 1999 JV125 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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