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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08165643855892799 6.8122e-08  
a 3.149430364017221 5.7239e-08 au
q 2.892259097002226 2.1527e-07 au
i 7.369030126888426 9.9024e-06 deg
node 181.3861207870343 6.1072e-05 deg
peri 288.9921888162212 8.7436e-05 deg
M 118.9924464690793 6.3705e-05 deg
tp 2457925.718239285201
(2017-Jun-21.21823929)
0.00035756 TDB
period 2041.486170472609
5.59
5.5654e-05
1.524e-07
d
yr
n .1763421203664873 4.8073e-09 deg/d
Q 3.406601631032215 6.1913e-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 = 1.91987 au 
 Jupiter MOID = 1.70992 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 = 1.70992 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

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