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134329 Cycnos (2377 T-3)
Classification: Jupiter Trojan          SPK-ID: 2134329
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 .08099190987705505 7.3504e-08  
a 5.172088573330316 1.6803e-07 au
q 4.753191241723001 5.0113e-07 au
i 17.38920948097062 8.9081e-06 deg
node 17.58996029891464 1.8522e-05 deg
peri 278.5826873093519 6.046e-05 deg
M 301.7820463417954 5.8562e-05 deg
tp 2459695.287174079216
(2022-Apr-25.78717408)
0.00070055 TDB
period 4296.327283108967
11.76
0.00020936
5.732e-07
d
yr
n .08379249909925202 4.0832e-09 deg/d
Q 5.590985904937631 1.8163e-07 au
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      15628 days (42.79 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:09:52  

Additional Information
 Earth MOID = 3.79425 au 
 Jupiter MOID = .0888759 au 
 T_jup = 2.903 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457525.5 (2016-May-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07956201768808965 7.3611e-08  
q 4.759824150797249 5.0217e-07 au
tp 2455410.472306072711
(2010-Aug-01.97230607)
0.0007272 TDB
node 17.5929347233471 1.8522e-05 deg
peri 279.2449861250701 6.1382e-05 deg
i 17.38882508624186 8.9078e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      15628 days (42.79 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:09:52  

Additional Information
 Jupiter MOID = .0888759 au 
 T_jup = 2.903 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.418547106606325E-15 -3.604316762003978E-14 9.259478784550796E-12 3.355424454586558E-15 4.952938238330862E-13 4.797814206714824E-15
q -3.604316762003978E-14 2.521700724444399E-13 -7.198860439216908E-11 -1.11626290252049E-14 -3.449628234385034E-12 -2.939496916128106E-14
tp 9.259478784550796E-12 -7.198860439216908E-11 5.288262061074161E-7 -3.967493977398059E-11 4.229861592545498E-8 7.279094969359094E-11
node 3.355424454586558E-15 -1.11626290252049E-14 -3.967493977398059E-11 3.430624336283245E-10 -3.298677126915196E-10 -1.886742754755702E-12
peri 4.952938238330862E-13 -3.449628234385034E-12 4.229861592545498E-8 -3.298677126915196E-10 3.767762205731049E-9 7.569042306095241E-12
i 4.797814206714824E-15 -2.939496916128106E-14 7.279094969359094E-11 -1.886742754755702E-12 7.569042306095241E-12 7.934978232048869E-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 12.5   n/a MPO401177  
diameter diameter 17.695 km 0.745 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.074   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

134329 Cycnos           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Cycnos, an ally of Priam, was a son of Poseidon by a nymph. His body was firm as iron; he was invulnerable. Achilles tried three times to kill him with his spear, but without success. He then strangled him after Cycnos stumbled over a stone.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

Alternate Designations
 2377 T-3 = 2001 QO179 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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