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146954 (2002 EQ90)
Classification: Main-belt Asteroid          SPK-ID: 2146954
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1225846783824326 4.7657e-08  
a 3.195934632424171 3.0832e-08 au
q 2.804162013377176 1.5018e-07 au
i 2.137147660400514 4.8564e-06 deg
node 61.75874778459595 0.00014037 deg
peri 155.2243748149051 0.00014179 deg
M 28.33320491627289 2.208e-05 deg
tp 2458836.256398100643
(2019-Dec-18.75639810)
0.00012713 TDB
period 2086.869341413937
5.71
3.0199e-05
8.268e-08
d
yr
n .1725072062997896 2.4963e-09 deg/d
Q 3.587707251471166 3.4611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      6258 days (17.13 yr)  
   first obs. used      2002-02-10  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57991  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:10:39  

Additional Information
 Earth MOID = 1.79711 au 
 Jupiter MOID = 1.38088 au 
 T_jup = 3.183 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456557.5 (2013-Sep-22.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211219207684599 4.7808e-08  
q 2.80763206345279 1.5039e-07 au
tp 2456745.051767192973
(2014-Mar-28.55176719)
0.00012039 TDB
node 61.77400168028182 0.0001403 deg
peri 154.4893957142336 0.00014175 deg
i 2.13805307954559 4.8569e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      6258 days (17.13 yr)  
   first obs. used      2002-02-10  
   last obs. used      2019-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57991  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:10:39  

Additional Information
 Jupiter MOID = 1.38088 au 
 T_jup = 3.183 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.28557540657642E-15 -7.069758979704817E-15 -2.92093484484845E-14 -1.358673683879742E-14 -5.044174175263228E-14 1.584736690826782E-16
q -7.069758979704817E-15 2.261855454118456E-14 5.682086162174598E-13 3.941391375310218E-14 2.249979775606468E-13 -1.649733293888595E-16
tp -2.92093484484845E-14 5.682086162174598E-13 1.449401263021962E-8 4.52656017327424E-12 2.475535499752272E-9 -2.242975170023436E-12
node -1.358673683879742E-14 3.941391375310218E-14 4.52656017327424E-12 1.968462505956327E-8 -1.966951139481306E-8 -2.905272539845129E-11
peri -5.044174175263228E-14 2.249979775606468E-13 2.475535499752272E-9 -1.966951139481306E-8 2.009366282801952E-8 2.865093247408842E-11
i 1.584736690826782E-16 -1.649733293888595E-16 -2.242975170023436E-12 -2.905272539845129E-11 2.865093247408842E-11 2.358995632317821E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO432924  
diameter diameter 5.640 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146954 (2002 EQ90)          Discovered 2002-Mar-12 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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