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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1027714378401089 5.9219e-08  
a 5.217342788271575 8.9649e-08 au
q 4.681148968216183 3.4999e-07 au
i 7.038884505117553 5.6638e-06 deg
node 183.9595926954129 3.1577e-05 deg
peri 183.7363436517977 3.8441e-05 deg
M 10.57106844016001 1.9755e-05 deg
tp 2459268.682927005100
(2021-Feb-23.18292700)
0.00023975 TDB
period 4352.837798623451
11.92
0.00011219
3.072e-07
d
yr
n .08270466685293144 2.1317e-09 deg/d
Q 5.753536608326968 9.8862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1430  
   data-arc span      8916 days (24.41 yr)  
   first obs. used      1996-09-10  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42838  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:42:55  

Additional Information
 Earth MOID = 3.6793 au 
 Jupiter MOID = .267418 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 11.59   n/a E2021B10  
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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