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46529 (1981 ED9)
Classification: Main-belt Asteroid          SPK-ID: 2046529
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068696436372448 2.6459e-08  
a 2.204788784397787 6.5249e-09 au
q 1.969163792713802 5.6669e-08 au
i 4.384006059582633 2.8323e-06 deg
node 255.90956648066 4.4788e-05 deg
peri 185.1948947678001 4.8139e-05 deg
M 133.5610948876933 1.6935e-05 deg
tp 2458756.864406210471
(2019-Sep-30.36440621)
5.6326e-05 TDB
period 1195.773469051925
3.27
5.3082e-06
1.453e-08
d
yr
n .3010603674669482 1.3365e-09 deg/d
Q 2.440413776081773 7.2223e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1297  
   data-arc span      14331 days (39.24 yr)  
   first obs. used      1981-02-14  
   last obs. used      2020-05-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:49:47  

Additional Information
 Earth MOID = .984563 au 
 Jupiter MOID = 2.74522 au 
 T_jup = 3.651 
[ 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 15.69   n/a E2021B10  
diameter diameter 1.934 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46529 (1981 ED9)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ED9 = 1999 XG41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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