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85945 (1999 EB8)
Classification: Main-belt Asteroid          SPK-ID: 2085945
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910012807872898 5.2379e-08  
a 2.450598732420652 1.1191e-08 au
q 1.982531235832598 1.3179e-07 au
i 9.155702970728195 5.3477e-06 deg
node 21.19041347720579 3.1535e-05 deg
peri 327.727473285165 3.4023e-05 deg
M 48.71206235840184 1.4802e-05 deg
tp 2458810.898944846482
(2019-Nov-23.39894485)
5.6984e-05 TDB
period 1401.22131050552
3.84
9.5981e-06
2.628e-08
d
yr
n .2569187303254206 1.7598e-09 deg/d
Q 2.918666229008705 1.3328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      7905 days (21.64 yr)  
   first obs. used      1999-03-12  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:17:39  

Additional Information
 Earth MOID = .983883 au 
 Jupiter MOID = 2.52989 au 
 T_jup = 3.453 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457169.5 (2015-May-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925297868103149 5.2356e-08  
q 1.97830568430951 1.3192e-07 au
tp 2457410.125966631481
(2016-Jan-22.62596663)
5.246e-05 TDB
node 21.2341834750916 3.1491e-05 deg
peri 327.795963111114 3.3931e-05 deg
i 9.165164658547072 5.3523e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      546  
   data-arc span      7905 days (21.64 yr)  
   first obs. used      1999-03-12  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:17:39  

Additional Information
 Jupiter MOID = 2.52989 au 
 T_jup = 3.453 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.74115544489066E-15 -6.892703644786064E-15 -3.147806418017469E-13 5.443139143122225E-15 -1.296026005488049E-13 -4.725385849378083E-15
q -6.892703644786064E-15 1.740376221927041E-14 9.253886204979816E-13 -1.205269670275371E-14 3.486381364768577E-13 1.225082440250432E-14
tp -3.147806418017469E-13 9.253886204979816E-13 2.75202938253892E-9 1.9081244628416E-11 6.826373960506922E-10 -7.255501729186184E-13
node 5.443139143122225E-15 -1.205269670275371E-14 1.9081244628416E-11 9.917030322559683E-10 -9.737485878261698E-10 -1.387962186606139E-11
peri -1.296026005488049E-13 3.486381364768577E-13 6.826373960506922E-10 -9.737485878261698E-10 1.15130630253906E-9 1.363210574650994E-11
i -4.725385849378083E-15 1.225082440250432E-14 -7.255501729186184E-13 -1.387962186606139E-11 1.363210574650994E-11 2.864713800681842E-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 15.5   n/a MPO436376  

85945 (1999 EB8)          Discovered 1999-Mar-12 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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