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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06718386200177069 4.841e-08  
a 2.974449302432595 3.1283e-08 au
q 2.774614310966701 1.3554e-07 au
i 11.93937445927791 5.3023e-06 deg
node 128.2783005245487 2.8791e-05 deg
peri 4.744674904967768 5.5231e-05 deg
M 103.8317593874425 4.7895e-05 deg
tp 2458060.074297577386
(2017-Nov-02.57429758)		 0.0002487 TDB
period 1873.735493069864
5.13		 2.9559e-05
8.093e-08		 d
yr
n .1921295728940846 3.031e-09 deg/d
Q 3.17428429389849 3.3384e-08 au
   Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      6922 days (18.95 yr)  
   first obs. used      2000-09-05  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52402  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:01:47  

Additional Information
 Earth MOID = 1.78971 au 
 Jupiter MOID = 1.86864 au 
 T_jup = 3.225 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457444.5 (2016-Feb-26.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06706603905467549 4.8603e-08  
q 2.772974014394018 1.3642e-07 au
tp 2458053.730570299021
(2017-Oct-27.23057030)		 0.00024876 TDB
node 128.3480325029744 2.8808e-05 deg
peri 3.302229416013324 5.5281e-05 deg
i 11.93809113639793 5.2996e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      6922 days (18.95 yr)  
   first obs. used      2000-09-05  
   last obs. used      2019-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52402  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:01:47  

Additional Information
 Jupiter MOID = 1.86864 au 
 T_jup = 3.225 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.36221650411852E-15 -6.497274453521412E-15 -2.217991008010608E-12 1.129424545898963E-15 -5.112475521723015E-13 2.878051420718504E-15
q -6.497274453521412E-15 1.861059224856661E-14 7.187213026508141E-12 -6.410845811842244E-15 1.563082538415212E-12 -6.109379235051913E-15
tp -2.217991008010608E-12 7.187213026508141E-12 6.188357185023449E-8 -3.783259594516748E-11 1.177606841954775E-8 -6.719370541286006E-12
node 1.129424545898963E-15 -6.410845811842244E-15 -3.783259594516748E-11 8.299036867713154E-10 -8.187062016569986E-10 -4.858071266468046E-11
peri -5.112475521723015E-13 1.563082538415212E-12 1.177606841954775E-8 -8.187062016569986E-10 3.055948159875406E-9 4.60319116902109E-11
i 2.878051420718504E-15 -6.109379235051913E-15 -6.719370541286006E-12 -4.858071266468046E-11 4.60319116902109E-11 2.808593371655099E-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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