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305495 (2008 EK58)
Classification: Main-belt Asteroid          SPK-ID: 2305495
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07037334124788612 5.0089e-08  
a 2.923495937668501 3.7691e-08 au
q 2.717759760410147 1.44e-07 au
i 6.257552993941584 5.4961e-06 deg
node 170.0201490818879 4.8417e-05 deg
peri 264.7429704035777 6.4423e-05 deg
M 228.4097388364373 4.5423e-05 deg
tp 2459667.880352528932
(2022-Mar-29.38035253)
0.00023546 TDB
period 1825.795653766378
5.00
3.5308e-05
9.667e-08
d
yr
n .1971743109681344 3.8131e-09 deg/d
Q 3.129232114926856 4.0343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      5079 days (13.91 yr)  
   first obs. used      2005-07-06  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63181  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:47  

Additional Information
 Earth MOID = 1.74172 au 
 Jupiter MOID = 2.06321 au 
 T_jup = 3.266 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07296743960793005 5.0393e-08  
q 2.706901859726267 1.4603e-07 au
tp 2457834.855981323571
(2017-Mar-22.35598132)
0.00021458 TDB
node 170.2779570418394 4.846e-05 deg
peri 262.8666841772416 6.3384e-05 deg
i 6.256671950583935 5.4956e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      5079 days (13.91 yr)  
   first obs. used      2005-07-06  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63181  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:47  

Additional Information
 Jupiter MOID = 2.06321 au 
 T_jup = 3.266 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.539417311709633E-15 -7.163392656099459E-15 1.878089943493422E-12 -1.071216179468849E-14 2.776474752067971E-13 2.872064027678999E-15
q -7.163392656099459E-15 2.132582130424121E-14 -3.274239515893986E-12 2.923042591615899E-14 -4.548437350162777E-13 -6.990851925914438E-15
tp 1.878089943493422E-12 -3.274239515893986E-12 4.604587922406106E-8 -3.409739561162416E-11 8.787453294477411E-9 9.775237839738294E-13
node -1.071216179468849E-14 2.923042591615899E-14 -3.409739561162416E-11 2.348377494007121E-9 -2.340137465521828E-9 -1.053972611721069E-11
peri 2.776474752067971E-13 -4.548437350162777E-13 8.787453294477411E-9 -2.340137465521828E-9 4.017538598962587E-9 1.05098974453113E-11
i 2.872064027678999E-15 -6.990851925914438E-15 9.775237839738294E-13 -1.053972611721069E-11 1.05098974453113E-11 3.020122664084325E-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 16.4   n/a MPO437357  

305495 (2008 EK58)          Discovered 2008-Mar-08 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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