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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2080017544757743 3.8537e-08  
a 3.950759341724157 5.1791e-08 au
q 3.128994467133976 1.5525e-07 au
i 2.563726964851631 5.6632e-06 deg
node 357.8233503982274 0.00010221 deg
peri 298.7742856366942 0.00010307 deg
M 216.8178530843662 1.3919e-05 deg
tp 2460341.289879530141
(2024-Jan-31.78987953)
0.00012064 TDB
period 2868.265111800815
7.85
5.6401e-05
1.544e-07
d
yr
n .1255114105453025 2.468e-09 deg/d
Q 4.772524216314337 6.2564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      9987 days (27.34 yr)  
   first obs. used      1993-09-15  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56886  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:32:50  

Additional Information
 Earth MOID = 2.11229 au 
 Jupiter MOID = .499782 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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