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15218 (1981 EO41)
Classification: Main-belt Asteroid          SPK-ID: 2015218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1379203618780795 5.1784e-08  
a 2.764661512567159 1.4366e-08 au
q 2.383358396283497 1.4336e-07 au
i 9.727982223246357 5.9163e-06 deg
node 5.959392374728542 2.2765e-05 deg
peri 357.4463786166999 2.7217e-05 deg
M 4.334064356364268 1.4288e-05 deg
tp 2458980.285908279882
(2020-May-10.78590828)
6.6604e-05 TDB
period 1679.041292627895
4.60
1.3087e-05
3.583e-08
d
yr
n .2144080682116865 1.6712e-09 deg/d
Q 3.14596462885082 1.6348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1565  
   data-arc span      14466 days (39.61 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50658  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:39:52  

Additional Information
 Earth MOID = 1.38119 au 
 Jupiter MOID = 2.30922 au 
 T_jup = 3.305 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO358779  
diameter diameter 6.292 km 0.258 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.148   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15218 (1981 EO41)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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