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22203 Prothoenor (6020 P-L)
Classification: Jupiter Trojan          SPK-ID: 2022203
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1009036281817228 3.8692e-08  
a 5.198544875252236 8.2452e-08 au
q 4.673992836073784 2.1535e-07 au
i 1.380556904483605 5.309e-06 deg
node 189.4113302497421 0.00017112 deg
peri 96.70747951566712 0.00017361 deg
M 61.9503223846712 2.665e-05 deg
tp 2458255.489844582924
(2018-May-16.98984458)
0.00032601 TDB
period 4329.334305716397
11.85
0.000103
2.82e-07
d
yr
n .08315366164369904 1.9783e-09 deg/d
Q 5.723096914430688 9.0771e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1399  
   data-arc span      24261 days (66.42 yr)  
   first obs. used      1954-02-26  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:50:48  

Additional Information
 Earth MOID = 3.65795 au 
 Jupiter MOID = .13679 au 
 T_jup = 2.989 
[ 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 11.6   n/a MPO337446  
diameter diameter 24.605 km 1.229 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.073   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

22203 Prothoenor           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Prothoenor was also a hero from Boeotia in the fight against Troy, as were Klonios and Arkesilaos.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 6020 P-L = 1994 NL11 = 1996 TT68 = 1998 UV31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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