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312631 (2009 UR145)
Classification: Jupiter Trojan          SPK-ID: 2312631
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1432524030330929 1.4441e-07  
a 5.28052922487861 4.1459e-07 au
q 4.524080724128273 1.033e-06 au
i 22.54294465831592 1.0106e-05 deg
node 106.4080519798477 2.2736e-05 deg
peri 318.9785834283024 4.499e-05 deg
M 290.0841202918911 5.3835e-05 deg
tp 2459861.271597644258
(2022-Oct-08.77159764)
0.00074328 TDB
period 4432.1515576381
12.13
0.00052198
1.429e-06
d
yr
n .08122465924695151 9.5659e-09 deg/d
Q 6.036977725628947 4.7399e-07 au
  Orbit Determination Parameters
   # obs. used (total)      182  
   data-arc span      6300 days (17.25 yr)  
   first obs. used      2002-04-10  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60975  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:10  

Additional Information
 Earth MOID = 3.57248 au 
 Jupiter MOID = .540625 au 
 T_jup = 2.827 
[ 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 MPO476404  
diameter diameter 16.574 km 0.614 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.059   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

312631 (2009 UR145)          Discovered 2009-Oct-21 by CSS at Catalina
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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