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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05768519802763483 7.8672e-08  
a 1.969428640448411 1.4243e-08 AU
q 1.855821759322849 1.5421e-07 AU
i 18.2637450612537 8.1498e-06 deg
node 264.4897400975316 2.7165e-05 deg
peri 286.08872230 8.8797e-05 deg
M 315.5399761326093 8.7874e-05 deg
tp 2457125.174028187501
(2015-Apr-12.67402819)
0.00024663 JED
period 1009.505759182008
2.76
1.0951e-05
2.998e-08
d
yr
n .3566101497941968 3.8685e-09 deg/d
Q 2.083035521573974 1.5064e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      345  
   data-arc span      7961 days (21.80 yr)  
   first obs. used      1993-03-02  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63074  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:45:03  

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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