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43749 (1981 EG46)
Classification: Main-belt Asteroid          SPK-ID: 2043749
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1915936423641903 4.63e-08  
a 2.541272675647207 1.6276e-08 au
q 2.054380987479367 1.1863e-07 au
i 4.897675314376512 4.9626e-06 deg
node 341.437404233526 6.883e-05 deg
peri 245.0554883765012 7.1535e-05 deg
M 253.5153065479088 2.5612e-05 deg
tp 2459638.183335407818
(2022-Feb-27.68333541)
0.00010792 TDB
period 1479.705633164124
4.05
1.4216e-05
3.892e-08
d
yr
n .2432916331001559 2.3373e-09 deg/d
Q 3.028164363815048 1.9395e-08 au
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      14596 days (39.96 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56797  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:22:06  

Additional Information
 Earth MOID = 1.04983 au 
 Jupiter MOID = 1.98629 au 
 T_jup = 3.414 
[ 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 15.88   n/a MPCxxxxx  
diameter diameter 1.729 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43749 (1981 EG46)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EG46 = 1995 WL43 = 1997 CZ29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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