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243501 (2009 UR139)
Classification: Jupiter Trojan          SPK-ID: 2243501
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02771964021228701 9.3421e-08  
a 5.246291462177716 2.9395e-07 au
q 5.100866150397357 7.1539e-07 au
i 12.31223299536237 8.2445e-06 deg
node 115.1818121975566 3.3554e-05 deg
peri 323.7918544693262 0.00018224 deg
M 260.9081111853014 0.00018675 deg
tp 2459808.627178711015
(2022-Aug-17.12717871)
0.002336 TDB
period 4389.115895744754
12.02
0.00036888
1.01e-06
d
yr
n .0820210740730314 6.8934e-09 deg/d
Q 5.391716773958075 3.0209e-07 au
  Orbit Determination Parameters
   # obs. used (total)      290  
   data-arc span      7161 days (19.61 yr)  
   first obs. used      2000-01-29  
   last obs. used      2019-09-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5403  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:51  

Additional Information
 Earth MOID = 4.1248 au 
 Jupiter MOID = .12436 au 
 T_jup = 2.953 
[ 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 12.6   n/a MPO454787  
diameter diameter 14.962 km 0.845 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.087   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

243501 (2009 UR139)          Discovered 2009-Oct-24 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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