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JPL Small-Body Database Browser
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13060 (1991 EJ)
Classification: Jupiter Trojan          SPK-ID: 2013060
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1243956342094106 7.4135e-08  
a 5.151354187642712 1.5515e-07 au
q 4.510548216433593 4.9266e-07 au
i 22.95494864748023 7.9039e-06 deg
node 280.4426862659712 1.4074e-05 deg
peri 96.98991101107676 3.4709e-05 deg
M 326.7014259418439 3.3242e-05 deg
tp 2459395.505988021685
(2021-Jun-30.00598802)
0.00039987 TDB
period 4270.517873811941
11.69
0.00019293
5.282e-07
d
yr
n .08429890955558922 3.8085e-09 deg/d
Q 5.792160158851829 1.7445e-07 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      24581 days (67.30 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:49:16  

Additional Information
 Earth MOID = 3.61121 au 
 Jupiter MOID = .0562406 au 
 T_jup = 2.828 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457181.5 (2015-Jun-08.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1222661104191537 7.4325e-08  
q 4.538013351801568 4.951e-07 au
tp 2455099.076425776041
(2009-Sep-24.57642578)
0.00039504 TDB
node 280.504358217573 1.408e-05 deg
peri 95.90846894598452 3.5206e-05 deg
i 22.9095575153682 7.8974e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      24581 days (67.30 yr)  
   first obs. used      1953-01-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:49:16  

Additional Information
 Jupiter MOID = .0562406 au 
 T_jup = 2.828 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.524202689470507E-15 -3.615794977007351E-14 1.997199264973665E-12 1.317580869791473E-16 -1.326222887814923E-13 -3.476658688253861E-15
q -3.615794977007351E-14 2.451191295676394E-13 -2.105534762029376E-11 1.352829720696751E-14 7.031553297700098E-13 3.714305328268623E-14
tp 1.997199264973665E-12 -2.105534762029376E-11 1.560555445607902E-7 -9.803503458564674E-12 1.253233709609776E-8 -2.372191990041839E-12
node 1.317580869791473E-16 1.352829720696751E-14 -9.803503458564674E-12 1.982558837062473E-10 -1.822920788889789E-10 1.133810228742026E-11
peri -1.326222887814923E-13 7.031553297700098E-13 1.253233709609776E-8 -1.822920788889789E-10 1.239431302962116E-9 -9.43406827707223E-12
i -3.476658688253861E-15 3.714305328268623E-14 -2.372191990041839E-12 1.133810228742026E-11 -9.43406827707223E-12 6.236898928505488E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.8   n/a MPO502267  
diameter diameter 36.148 km 2.042 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.071   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

13060 (1991 EJ)          Discovered 1991-Mar-10 by McNaught, R. H. at Siding Spring
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EJ = 1997 WT29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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