Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
48373 Gorgythion (2161 T-3)
Classification: Jupiter Trojan          SPK-ID: 2048373
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01396496383286785 6.2106e-08  
a 5.267637257240506 1.3998e-07 au
q 5.194074893458475 3.8301e-07 au
i 27.22231907340969 6.2614e-06 deg
node 208.3444491043876 1.2637e-05 deg
peri 33.20765605304443 0.00024335 deg
M 16.39708435628976 0.0002384 deg
tp 2458799.365602868039
(2019-Nov-11.86560287)
0.0029294 TDB
period 4415.930380923544
12.09
0.00017603
4.819e-07
d
yr
n .08152302435635543 3.2496e-09 deg/d
Q 5.341199621022537 1.4194e-07 au
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      15655 days (42.86 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:37:42  

Additional Information
 Earth MOID = 4.19688 au 
 Jupiter MOID = .245406 au 
 T_jup = 2.777 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457648.5 (2016-Sep-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .008090286497965844 6.6047e-08  
q 5.18793249034006 4.0958e-07 au
tp 2458980.506302883888
(2020-May-11.00630288)
0.0047154 TDB
node 208.4085429827167 1.2631e-05 deg
peri 48.18218624311147 0.00039297 deg
i 27.29017099967746 6.2685e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      599  
   data-arc span      15655 days (42.86 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:37:42  

Additional Information
 Jupiter MOID = .245406 au 
 T_jup = 2.777 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.362208357796204E-15 -2.565566613070408E-14 4.803183893249262E-11 7.163625088407146E-15 4.125355367628822E-12 -5.399811904161444E-15
q -2.565566613070408E-14 1.677517569335379E-13 -6.178729335187521E-10 -4.341607820321002E-14 -5.252132556564121E-11 1.085602093899092E-14
tp 4.803183893249262E-11 -6.178729335187521E-10 2.223457570731533E-5 4.452387545725205E-10 1.852030110000382E-6 3.633164198751648E-10
node 7.163625088407146E-15 -4.341607820321002E-14 4.452387545725205E-10 1.595501790383607E-10 -1.048398860300666E-10 2.750368858901892E-11
peri 4.125355367628822E-12 -5.252132556564121E-11 1.852030110000382E-6 -1.048398860300666E-10 1.544215789428E-7 5.786149067410709E-12
i -5.399811904161444E-15 1.085602093899092E-14 3.633164198751648E-10 2.750368858901892E-11 5.786149067410709E-12 3.929415776196694E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO474361  
diameter diameter 20.267 km 0.638 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.090   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

48373 Gorgythion           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Gorgythion, a bastard son of Priam, was killed by Teucer, who had tried to kill Hector, but the arrow hit Gorgythion.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 2161 T-3 = 2000 SE303 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-26 16:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin