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90900 (1997 EA2)
Classification: Main-belt Asteroid          SPK-ID: 2090900
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0580282569460114 3.578e-08  
a 2.745976940310438 1.4241e-08 au
q 2.586632684850281 9.8641e-08 au
i 2.056615633877437 4.2859e-06 deg
node 202.111591926247 0.00011294 deg
peri 226.0487448297125 0.000121 deg
M 119.0636819456201 4.2096e-05 deg
tp 2458450.806548136216
(2018-Nov-28.30654814)
0.00019406 TDB
period 1662.048740953133
4.55
1.2929e-05
3.54e-08
d
yr
n .2166001460303452 1.6849e-09 deg/d
Q 2.905321195770594 1.5067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      912  
   data-arc span      9869 days (27.02 yr)  
   first obs. used      1993-04-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:52  

Additional Information
 Earth MOID = 1.60098 au 
 Jupiter MOID = 2.26177 au 
 T_jup = 3.344 
[ 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 15.3   n/a MPO453347  

90900 (1997 EA2)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1997 EA2 = 2002 GX74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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