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43738 (1981 ED6)
Classification: Main-belt Asteroid          SPK-ID: 2043738
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2950506786341112 6.3959e-08  
a 2.551905107074405 1.7837e-08 au
q 1.798963773422248 1.7058e-07 au
i 11.59946008224613 7.2897e-06 deg
node 219.2928602235447 1.9307e-05 deg
peri 65.20446014149776 2.5012e-05 deg
M 194.69853696748 1.8364e-05 deg
tp 2459884.206021915541
(2022-Oct-31.70602192)
8.2042e-05 TDB
period 1489.001750947433
4.08
1.5611e-05
4.274e-08
d
yr
n .2417727177089862 2.5348e-09 deg/d
Q 3.304846440726563 2.3099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      507  
   data-arc span      15418 days (42.21 yr)  
   first obs. used      1978-10-26  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:22:03  

Additional Information
 Earth MOID = .817328 au 
 Jupiter MOID = 1.96718 au 
 T_jup = 3.350 
[ 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 16.20   n/a MPCxxxxx  
diameter diameter 3.629 km 0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.040   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

43738 (1981 ED6)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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