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136571 (1981 EL8)
Classification: Main-belt Asteroid          SPK-ID: 2136571
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2029735516489181 3.578e-08  
a 3.093282336630636 2.2218e-08 au
q 2.465427834511852 1.1043e-07 au
i 15.93167755484682 5.7312e-06 deg
node 339.9207105500191 1.6287e-05 deg
peri 101.8506448711298 2.2975e-05 deg
M 146.6588222783658 1.421e-05 deg
tp 2458190.969041855320
(2018-Mar-13.46904186)
7.7543e-05 TDB
period 1987.136814578627
5.44
2.141e-05
5.862e-08
d
yr
n .181165180655333 1.9519e-09 deg/d
Q 3.721136838749421 2.6728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      13940 days (38.17 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57497  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:49:44  

Additional Information
 Earth MOID = 1.53976 au 
 Jupiter MOID = 1.72831 au 
 T_jup = 3.134 
[ 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 14.9   n/a MPO469436  

136571 (1981 EL8)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1981 EL8 = 2000 SM13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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