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90728 (1992 EW8)
Classification: Main-belt Asteroid          SPK-ID: 2090728
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2143053238953736 4.5954e-08  
a 2.730527356042652 1.3908e-08 au
q 2.145360806600753 1.2493e-07 au
i 9.779493322719487 7.2799e-06 deg
node 356.6330347444513 2.7829e-05 deg
peri 122.0751714543196 3.207e-05 deg
M 121.481966072421 1.5441e-05 deg
tp 2458444.368447295648
(2018-Nov-21.86844730)
6.9487e-05 TDB
period 1648.041807738062
4.51
1.2592e-05
3.448e-08
d
yr
n .2184410603600525 1.669e-09 deg/d
Q 3.31569390548455 1.6889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      10454 days (28.62 yr)  
   first obs. used      1990-10-19  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53505  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:17:08  

Additional Information
 Earth MOID = 1.17909 au 
 Jupiter MOID = 1.82321 au 
 T_jup = 3.300 
[ 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 14.8   n/a MPO474786  

90728 (1992 EW8)          Discovered 1992-Mar-02 by UESAC at La Silla
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1992 EW8 = 1999 TH142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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