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JPL Small-Body Database Browser
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85143 (1981 EE30)
Classification: Main-belt Asteroid          SPK-ID: 2085143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .20038285826026 3.8523e-08  
a 2.386482610058801 1.0958e-08 au
q 1.908272403466813 9.1171e-08 au
i 7.637987841952033 4.2111e-06 deg
node 240.1007286845353 3.6262e-05 deg
peri 64.2955878541561 3.8406e-05 deg
M 15.50106669783694 1.207e-05 deg
tp 2458542.517768954524
(2019-Feb-28.01776895)
4.5023e-05 TDB
period 1346.591404531163
3.69
9.275e-06
2.539e-08
d
yr
n .2673416737910485 1.8414e-09 deg/d
Q 2.864692816650789 1.3154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      924  
   data-arc span      14150 days (38.74 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47136  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:09:03  

Additional Information
 Earth MOID = .907125 au 
 Jupiter MOID = 2.39473 au 
 T_jup = 3.496 
[ 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 MPO436371  

85143 (1981 EE30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1981 EE30 = 2001 XB148 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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