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46533 (1981 EO23)
Classification: Main-belt Asteroid          SPK-ID: 2046533
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .1065502673560485 3.235e-08  
a 2.210631951377583 7.0158e-09 au
q 1.975088525932479 7.1259e-08 au
i .9754421836696611 3.6209e-06 deg
node 250.3615350210295 0.00028744 deg
peri 170.5416441823487 0.00028851 deg
M 77.74476144980015 2.4366e-05 deg
tp 2458741.236293434087
(2019-Sep-14.73629343)
8.1041e-05 TDB
period 1200.530204520536
3.29
5.7151e-06
1.565e-08
d
yr
n .2998675074100078 1.4275e-09 deg/d
Q 2.446175376822688 7.7633e-09 au
  Orbit Determination Parameters
   # obs. used (total)      958  
   data-arc span      25334 days (69.36 yr)  
   first obs. used      1950-12-09  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50513  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:33:35  

Additional Information
 Earth MOID = .987756 au 
 Jupiter MOID = 2.80503 au 
 T_jup = 3.650 
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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 15.9   n/a MPO502465  
diameter diameter 4.299 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.031   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46533 (1981 EO23)          Discovered 1981-Mar-03 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1981 EO23 = 1999 VZ162 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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