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100133 Demosthenes (1993 RG14)
Classification: Outer Main-belt Asteroid          SPK-ID: 2100133
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2079612995561732 3.9061e-08  
a 3.951158799283322 5.4967e-08 au
q 3.129470680631554 1.556e-07 au
i 2.563375268793286 5.9283e-06 deg
node 357.8313295604868 0.00010793 deg
peri 298.7096142718171 0.0001089 deg
M 191.7987088499754 1.4073e-05 deg
tp 2460340.830740251774
(2024-Jan-31.33074025)
0.00012152 TDB
period 2868.700134175921
7.85
5.9863e-05
1.639e-07
d
yr
n .1254923774399361 2.6187e-09 deg/d
Q 4.772846917935091 6.6399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      9633 days (26.37 yr)  
   first obs. used      1993-09-15  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56403  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:01:10  

Additional Information
 Earth MOID = 2.11474 au 
 Jupiter MOID = .499642 au 
 T_jup = 3.020 
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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 14.2   n/a MPO436466  
diameter diameter 9.405 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

100133 Demosthenes           Discovered 1993 Sept. 15 by E. W. Elst at the European Southern Observatory.
Demosthenes (384-322 BC), a famous orator of ancient Athens was considered by Cicero as the greatest among all orators. Known from his Philippiques, he strove to restore Athens' supremacy and freedom. He played a leading role in the uprising of the city against Alexander the Great, but he failed and took his own life.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

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Alternate Designations
 1993 RG14 = 2001 TP50 
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