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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068348365601486 2.799e-08  
a 2.205121640500605 8.0087e-09 au
q 1.969537830442476 6.1672e-08 au
i 4.384054011742164 3.2647e-06 deg
node 255.9141537023199 5.4453e-05 deg
peri 185.383460682853 5.8618e-05 deg
M 312.7810829365185 2.2629e-05 deg
tp 2458757.377541858680
(2019-Sep-30.87754186)
7.5477e-05 TDB
period 1196.044267453193
3.27
6.5158e-06
1.784e-08
d
yr
n .3009922038810227 1.6397e-09 deg/d
Q 2.440705450558733 8.8643e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1046  
   data-arc span      14136 days (38.70 yr)  
   first obs. used      1981-02-14  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53385  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:27:33  

Additional Information
 Earth MOID = .985256 au 
 Jupiter MOID = 2.74577 au 
 T_jup = 3.650 
[ 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 15.6   n/a MPO449295  
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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