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21284 Pandion (1996 TC51)
Classification: Jupiter Trojan          SPK-ID: 2021284
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 .1031079665326569 5.9605e-08  
a 5.219753919342007 9.0801e-08 au
q 4.681555706917786 3.5308e-07 au
i 7.037397859952257 5.6683e-06 deg
node 183.9609771568441 3.25e-05 deg
peri 183.3557350079909 3.9224e-05 deg
M 338.141891613936 2.0168e-05 deg
tp 2459264.974341708563
(2021-Feb-19.47434171)
0.00024224 TDB
period 4355.855563228243
11.93
0.00011366
3.112e-07
d
yr
n .08264736853055664 2.1566e-09 deg/d
Q 5.757952131766227 1.0016e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1342  
   data-arc span      8827 days (24.17 yr)  
   first obs. used      1996-09-10  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4282  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:16:16  

Additional Information
 Earth MOID = 3.68042 au 
 Jupiter MOID = .268598 au 
 T_jup = 2.974 
[ 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 11.5   n/a MPO337438  
diameter diameter 28.550 km 0.415 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.065   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

21284 Pandion           Discovered 1996 Oct. 5 by E. W. Elst at the European Southern Observatory.
Pandion was a Greek fighter who helped Menestheus, the leader of the Athenian soldiers, to escape from the attack by Sarpedon.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 1996 TC51 = 2000 AN108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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