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45261 Decoen (2000 AB2)
Classification: Main-belt Asteroid          SPK-ID: 2045261
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910613657218007 4.6286e-08  
a 2.47250738410668 8.5489e-09 au
q 2.00010674654202 1.1219e-07 au
i 7.296126200935152 3.1122e-06 deg
node 116.7839566965843 3.2324e-05 deg
peri 259.6845865371054 3.3281e-05 deg
M 161.6249511788893 7.4966e-06 deg
tp 2458362.955169364912
(2018-Sep-01.45516936)
2.9171e-05 TDB
period 1420.053880013856
3.89
7.365e-06
2.016e-08
d
yr
n .2535115076031392 1.3148e-09 deg/d
Q 2.944908021671339 1.0182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1703  
   data-arc span      8001 days (21.91 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:53:04  

Additional Information
 Earth MOID = 1.01662 au 
 Jupiter MOID = 2.55097 au 
 T_jup = 3.447 
[ 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 14.7   n/a MPO502457  
diameter diameter 3.234 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.294   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

45261 Decoen           Discovered 2000 Jan. 2 by S. Sposetti at Gnosca.
Yvette Decoen (b. 1951) is an esteemed physics teacher in the Bellinzona College and a friend of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

[ show close-approach data ]
Alternate Designations
 2000 AB2 = 1998 MF31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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