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312368 (2008 EF5)
Classification: Main-belt Asteroid          SPK-ID: 2312368
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0689279451883807 4.235e-08  
a 2.972290036901126 2.698e-08 au
q 2.767416192153635 1.2471e-07 au
i 11.96387025439758 4.7866e-06 deg
node 128.1996715795468 1.9344e-05 deg
peri 5.588580526464726 4.2662e-05 deg
M 179.7522063932791 4.126e-05 deg
tp 2458065.940547220427
(2017-Nov-08.44054722)
0.00020886 TDB
period 1871.695539939842
5.12
2.5485e-05
6.977e-08
d
yr
n .1923389741109127 2.6188e-09 deg/d
Q 3.177163881648617 2.884e-08 au
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      7348 days (20.12 yr)  
   first obs. used      2000-09-05  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:47:43  

Additional Information
 Earth MOID = 1.78209 au 
 Jupiter MOID = 1.86391 au 
 T_jup = 3.226 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457994.5 (2017-Aug-29.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06682176301924572 4.1828e-08  
q 2.772480968960378 1.2294e-07 au
tp 2458055.206443037747
(2017-Oct-28.70644304)
0.00021713 TDB
node 128.3369403938927 1.9421e-05 deg
peri 3.628149291154513 4.4125e-05 deg
i 11.938914177737 4.7778e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      7348 days (20.12 yr)  
   first obs. used      2000-09-05  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:47:43  

Additional Information
 Jupiter MOID = 1.86391 au 
 T_jup = 3.226 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.749602673864062E-15 -5.036620985135074E-15 7.989409974114942E-13 -4.525805683172928E-15 1.381131281788326E-13 2.494370406864315E-15
q -5.036620985135074E-15 1.511521379409438E-14 4.90761478988122E-14 1.005465902840863E-14 2.469019335275707E-14 -5.624360818135655E-15
tp 7.989409974114942E-13 4.90761478988122E-14 4.714428443412427E-8 -3.641616348688343E-11 8.621455087396596E-9 2.795454847871339E-13
node -4.525805683172928E-15 1.005465902840863E-14 -3.641616348688343E-11 3.771572309487082E-10 -3.753394304846666E-10 -1.800906084527878E-12
peri 1.381131281788326E-13 2.469019335275707E-14 8.621455087396596E-9 -3.753394304846666E-10 1.947030496988151E-9 1.735935060672279E-12
i 2.494370406864315E-15 -5.624360818135655E-15 2.795454847871339E-13 -1.800906084527878E-12 1.735935060672279E-12 2.282745406375749E-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 15.4   n/a MPO437378  

312368 (2008 EF5)          Discovered 2008-Mar-02 by PMO NEO Survey Program at Purple Mountain
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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