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447731 (2007 EF217)
Classification: Main-belt Asteroid          SPK-ID: 2447731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08203734209743495 6.8811e-08  
a 3.151454685048297 6.0268e-08 au
q 2.892917718946426 2.1896e-07 au
i 7.369848908294223 9.8961e-06 deg
node 180.9826556569916 6.1061e-05 deg
peri 291.1931428962379 8.6905e-05 deg
M 187.393954044778 6.3332e-05 deg
tp 2459980.257349896038
(2023-Feb-04.75734990)
0.00036588 TDB
period 2043.45475855507
5.59
5.8618e-05
1.605e-07
d
yr
n .1761722389462425 5.0536e-09 deg/d
Q 3.409991651150169 6.5212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      5403 days (14.79 yr)  
   first obs. used      2004-09-12  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66056  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:49:31  

Additional Information
 Earth MOID = 1.91982 au 
 Jupiter MOID = 1.69867 au 
 T_jup = 3.190 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457459.5 (2016-Mar-12.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08222157285815757 6.7866e-08  
q 2.887729102611915 2.1563e-07 au
tp 2457919.777721915108
(2017-Jun-15.27772191)
0.00035581 TDB
node 181.4255466652606 6.0991e-05 deg
peri 287.6805953073658 8.7254e-05 deg
i 7.375548131473228 9.9121e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      5403 days (14.79 yr)  
   first obs. used      2004-09-12  
   last obs. used      2019-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66056  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:49:31  

Additional Information
 Jupiter MOID = 1.69867 au 
 T_jup = 3.190 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.605825068845054E-15 -1.418589252709159E-14 1.981281799023366E-12 -4.667779233415684E-15 2.795510071025498E-13 4.568490023115341E-16
q -1.418589252709159E-14 4.64972516931953E-14 -2.716191578205303E-12 2.416414856177249E-14 -4.099781169712259E-13 2.560225712129968E-15
tp 1.981281799023366E-12 -2.716191578205303E-12 1.266040943466169E-7 -4.047229487921267E-11 2.22525021746982E-8 -4.570758386652246E-11
node -4.667779233415684E-15 2.416414856177249E-14 -4.047229487921267E-11 3.719950856249173E-9 -3.695167543916741E-9 6.905937385318069E-11
peri 2.795510071025498E-13 -4.099781169712259E-13 2.22525021746982E-8 -3.695167543916741E-9 7.613181588473046E-9 -7.663625480699512E-11
i 4.568490023115341E-16 2.560225712129968E-15 -4.570758386652246E-11 6.905937385318069E-11 -7.663625480699512E-11 9.824912822920628E-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 16.6   n/a MPO437740  

447731 (2007 EF217)          Discovered 2007-Mar-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-10-28

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