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JPL Small-Body Database Browser
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85584 (1998 EN20)
Classification: Main-belt Asteroid          SPK-ID: 2085584
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06049216595638168 4.472e-08  
a 2.984581485514958 2.4958e-08 au
q 2.804037686982843 1.3203e-07 au
i 2.516359048817944 7.6709e-06 deg
node 356.933056853943 0.00012052 deg
peri 104.8858412580442 0.00013931 deg
M 86.91787494840875 7.0944e-05 deg
tp 2458145.794521639994
(2018-Jan-27.29452164)
0.00036887 TDB
period 1883.31769853744
5.16
2.3623e-05
6.468e-08
d
yr
n .1911520293573258 2.3977e-09 deg/d
Q 3.165125284047074 2.6468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      7815 days (21.40 yr)  
   first obs. used      1997-12-08  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:41  

Additional Information
 Earth MOID = 1.82244 au 
 Jupiter MOID = 1.9179 au 
 T_jup = 3.254 
[ 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 15.1   n/a MPO432399  

85584 (1998 EN20)          Discovered 1998-Mar-03 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 EN20 = 1998 FW148 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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