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305512 (2008 EU158)
Classification: Outer Main-belt Asteroid          SPK-ID: 2305512
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09691806983664078 1.4178e-07  
a 3.595179761568879 9.2348e-08 au
q 3.246741878361869 5.0557e-07 au
i 4.82568288520714 1.361e-05 deg
node 86.21502466467912 0.000169 deg
peri 262.6716548563056 0.00019058 deg
M 128.0288737481471 7.9431e-05 deg
tp 2458115.007745684750
(2017-Dec-27.50774568)
0.00055402 TDB
period 2489.885306501834
6.82
9.5935e-05
2.627e-07
d
yr
n .144584973074837 5.5708e-09 deg/d
Q 3.943617644775888 1.013e-07 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      5168 days (14.15 yr)  
   first obs. used      2005-11-26  
   last obs. used      2020-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Earth MOID = 2.24528 au 
 Jupiter MOID = 1.4758 au 
 T_jup = 3.096 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457198.5 (2015-Jun-25.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09551578582689461 1.413e-07  
q 3.248558664300496 5.0177e-07 au
tp 2458116.191522157722
(2017-Dec-28.69152216)
0.00056438 TDB
node 86.22811349343365 0.00016903 deg
peri 262.8827976452505 0.00019141 deg
i 4.826418507215362 1.361e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      5168 days (14.15 yr)  
   first obs. used      2005-11-26  
   last obs. used      2020-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:55:23  

Additional Information
 Jupiter MOID = 1.4758 au 
 T_jup = 3.096 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.996613540753084E-14 -6.994240351322466E-14 -3.964549094868163E-11 -2.936686432926632E-14 -6.64054973364781E-12 -2.920284545793665E-14
q -6.994240351322466E-14 2.517712610799847E-13 1.337851665607209E-10 1.162501531123324E-13 2.205182951940403E-11 1.068071350561744E-13
tp -3.964549094868163E-11 1.337851665607209E-10 3.185213966214298E-7 1.289213266127836E-10 5.097648678485188E-8 7.329781226311236E-11
node -2.936686432926632E-14 1.162501531123324E-13 1.289213266127836E-10 2.856986690814378E-8 -2.844591387847067E-8 8.115558582322267E-10
peri -6.64054973364781E-12 2.205182951940403E-11 5.097648678485188E-8 -2.844591387847067E-8 3.663937327210609E-8 -7.965043883238198E-10
i -2.920284545793665E-14 1.068071350561744E-13 7.329781226311236E-11 8.115558582322267E-10 -7.965043883238198E-10 1.852331662172947E-10

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 15.7   n/a MPO471208  

305512 (2008 EU158)          Discovered 2008-Mar-11 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2008 EU158 = 2005 XQ33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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