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20043 Ellenmacarthur (1993 EM)
Classification: Inner Main-belt Asteroid          SPK-ID: 2020043
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05768519798921339 7.8671e-08  
a 1.969428640362509 1.4232e-08 AU
q 1.855821759317571 1.5421e-07 AU
i 18.2637450252694 8.1463e-06 deg
node 264.4897401266419 2.7165e-05 deg
peri 286.0887222687276 8.8711e-05 deg
M 315.5399761522901 8.7761e-05 deg
tp 2457125.174028124156
(2015-Apr-12.67402812)
0.00024631 JED
period 1009.505759115959
2.76
1.0942e-05
2.996e-08
d
yr
n .3566101498175286 3.8654e-09 deg/d
Q 2.083035521407448 1.5053e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7973 days (21.83 yr)  
   first obs. used      1993-03-02  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62467  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:55:45  

Additional Information
 Earth MOID = .899037 AU 
 T_jup = 3.809 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO267782  
SMASSII spectral type spec_B U   n/a Binzel et al. (2001) Icarus 151, 139-149  

20043 Ellenmacarthur           Discovered 1993 Mar. 2 by R. H. McNaught at Siding Spring.
British yachtswoman Ellen MacArthur (b. 1976) finished second in the Vendee Globe round-the-world race in 2000-2001, the youngest competitor ever to complete the course. On 2005 Feb. 7, with a time of 71.8 days, she broke by 1.1 days the previous record for the fastest single-handed non-stop circumnavigation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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