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305853 (2009 EV9)
Classification: Main-belt Asteroid          SPK-ID: 2305853
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1443293352479126 5.2537e-08  
a 2.321124726316196 1.5638e-08 au
q 1.986118337539486 1.2164e-07 au
i 2.711907260741875 6.4028e-06 deg
node 199.4669739586051 0.00010041 deg
peri 218.1835114331323 0.00010227 deg
M 149.2771359783551 1.7741e-05 deg
tp 2458464.904478045559
(2018-Dec-12.40447805)
6.3826e-05 TDB
period 1291.6538533507
3.54
1.3053e-05
3.574e-08
d
yr
n .2787124422430346 2.8166e-09 deg/d
Q 2.656131115092906 1.7895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      7157 days (19.59 yr)  
   first obs. used      2000-09-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:01:44  

Additional Information
 Earth MOID = .998919 au 
 Jupiter MOID = 2.66242 au 
 T_jup = 3.562 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457376.5 (2015-Dec-20.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1432032119980242 5.2409e-08  
q 1.989516723476558 1.2116e-07 au
tp 2457172.876936932089
(2015-May-30.37693693)
6.7081e-05 TDB
node 199.4904894364126 0.00010053 deg
peri 218.290113478141 0.00010243 deg
i 2.708907053375854 6.4e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      7157 days (19.59 yr)  
   first obs. used      2000-09-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58507  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:01:44  

Additional Information
 Jupiter MOID = 2.66242 au 
 T_jup = 3.562 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.746726913553629E-15 -6.310944727130208E-15 -7.386492856904031E-13 2.27212332905248E-14 -1.986652056291411E-13 -1.202310261968507E-15
q -6.310944727130208E-15 1.468026780792275E-14 1.462215482339167E-12 -5.416912629354771E-14 3.989553739684208E-13 2.865911097417266E-15
tp -7.386492856904031E-13 1.462215482339167E-12 4.499911824357334E-9 5.720260498182934E-12 1.328895914098942E-9 2.236995897007279E-12
node 2.27212332905248E-14 -5.416912629354771E-14 5.720260498182934E-12 1.010569861590701E-8 -1.009233599257483E-8 2.45817738139884E-11
peri -1.986652056291411E-13 3.989553739684208E-13 1.328895914098942E-9 -1.009233599257483E-8 1.049114669936807E-8 -2.392135454470919E-11
i -1.202310261968507E-15 2.865911097417266E-15 2.236995897007279E-12 2.45817738139884E-11 -2.392135454470919E-11 4.096059144057268E-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 17.5   n/a MPO471211  

305853 (2009 EV9)          Discovered 2009-Mar-01 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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