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JPL Small-Body Database Browser
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20043 Ellenmacarthur (1993 EM)
Classification: Inner Main-belt Asteroid          SPK-ID: 2020043
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05754450455438941 4.9521e-08  
a 1.969283777637487 7.5622e-09 au
q 1.855962318326341 9.9439e-08 au
i 18.26683335641829 5.0813e-06 deg
node 264.4615074889603 1.5146e-05 deg
peri 286.1083198453742 4.4425e-05 deg
M 308.8606254845998 4.3358e-05 deg
tp 2459143.888325474473
(2020-Oct-21.38832547)
0.00012173 TDB
period 1009.394378792522
2.76
5.8143e-06
1.592e-08
d
yr
n .3566494995054822 2.0544e-09 deg/d
Q 2.082605236948632 7.9974e-09 au
  Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      9832 days (26.92 yr)  
   first obs. used      1993-03-02  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51792  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:00:10  

Additional Information
 Earth MOID = .897518 au 
 Jupiter MOID = 3.01362 au 
 T_jup = 3.809 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO502318  
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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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