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243499 (2009 UA131)
Classification: Jupiter Trojan          SPK-ID: 2243499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03107932690741663 1.0593e-07  
a 5.092729845701067 2.5388e-07 au
q 4.934451229975366 7.3209e-07 au
i 16.64844552462157 9.1748e-06 deg
node 278.9665284700604 3.2972e-05 deg
peri 112.4792758867551 0.00017135 deg
M 303.0996833191141 0.00016783 deg
tp 2459263.993339748816
(2021-Feb-18.49333975)
0.0019545 TDB
period 4197.825534946651
11.49
0.00031391
8.594e-07
d
yr
n .08575868553922052 6.4129e-09 deg/d
Q 5.251008461426768 2.6177e-07 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      6827 days (18.69 yr)  
   first obs. used      2001-01-21  
   last obs. used      2019-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56395  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:15:45  

Additional Information
 Earth MOID = 3.98151 au 
 Jupiter MOID = .0644294 au 
 T_jup = 2.916 
[ 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 12.8   n/a MPO254436  
diameter diameter 13.499 km 0.911 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.088   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243499 (2009 UA131)          Discovered 2009-Oct-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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