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171433 Prothous (2007 RK35)
Classification: Jupiter Trojan          SPK-ID: 2171433
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05411665490919556 6.3435e-08  
a 5.247864796988457 1.1763e-07 au
q 4.963867908759717 3.6852e-07 au
i 5.538652277183369 6.7446e-06 deg
node 166.3611043463119 5.0895e-05 deg
peri 220.3089917545994 7.231e-05 deg
M 350.5957071209048 4.8657e-05 deg
tp 2459115.208612980872
(2020-Sep-22.70861298)
0.00059177 TDB
period 4391.090452415511
12.02
0.00014763
4.042e-07
d
yr
n .08198419137596363 2.7564e-09 deg/d
Q 5.531861685217198 1.2399e-07 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   data-arc span      7156 days (19.59 yr)  
   first obs. used      2001-03-18  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:42:39  

Additional Information
 Earth MOID = 3.97007 au 
 Jupiter MOID = .0305907 au 
 T_jup = 2.988 
[ 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 12.9   n/a MPO454173  
diameter diameter 12.625 km 0.810 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.077   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

171433 Prothous           Discovered 2007 Sept. 7 by J. Lacruz at La Cañada.
Prothous, leader of Magnesia, son of Tenthredon, was one of the suitors of Helen. He brought 40 ships to the Trojan war and was one of the warriors who hid inside the wooden horse.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080122/MPCPages.arcLast Updated: 2008-03-05
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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