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85943 (1999 EJ7)
Classification: Main-belt Asteroid          SPK-ID: 2085943
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1878002879356967 4.5563e-08  
a 2.514999673917056 1.4833e-08 au
q 2.04268201099725 1.1643e-07 au
i 3.655581371415417 4.879e-06 deg
node 320.8854224825703 6.9808e-05 deg
peri 7.067309272703269 7.1791e-05 deg
M 302.1091452189331 2.1347e-05 deg
tp 2459234.767901812941
(2021-Jan-20.26790181)
8.7069e-05 TDB
period 1456.818092799016
3.99
1.2888e-05
3.529e-08
d
yr
n .2471138996553263 2.1862e-09 deg/d
Q 2.987317336836863 1.7619e-08 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      8208 days (22.47 yr)  
   first obs. used      1997-12-27  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:18:18  

Additional Information
 Earth MOID = 1.03132 au 
 Jupiter MOID = 2.35602 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456599.5 (2013-Nov-03.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1858567684954024 4.5193e-08  
q 2.047919893319553 1.1504e-07 au
tp 2456317.732342762587
(2013-Jan-25.23234276)
8.2583e-05 TDB
node 320.9537643142309 6.9854e-05 deg
peri 6.455035892561406 7.1894e-05 deg
i 3.654930480156457 4.8753e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      8208 days (22.47 yr)  
   first obs. used      1997-12-27  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:18:18  

Additional Information
 Jupiter MOID = 2.35602 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.042415775333955E-15 -5.169606915173583E-15 1.006204246938225E-12 -5.435148782960109E-15 1.660230315547847E-13 -3.654574406865886E-16
q -5.169606915173583E-15 1.32340956124312E-14 -2.44969837386333E-12 1.40948716514419E-14 -3.956555407113667E-13 1.010096670062806E-15
tp 1.006204246938225E-12 -2.44969837386333E-12 6.819915708494738E-9 -3.816297546257952E-12 1.423588001679144E-9 -5.875867567167572E-12
node -5.435148782960109E-15 1.40948716514419E-14 -3.816297546257952E-12 4.879552526170044E-9 -4.870144223280746E-9 -1.937409558227611E-11
peri 1.660230315547847E-13 -3.956555407113667E-13 1.423588001679144E-9 -4.870144223280746E-9 5.168810629363758E-9 1.808723111988595E-11
i -3.654574406865886E-16 1.010096670062806E-15 -5.875867567167572E-12 -1.937409558227611E-11 1.808723111988595E-11 2.376823558227571E-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 15.3   n/a MPO436376  

85943 (1999 EJ7)          Discovered 1999-Mar-12 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 EJ7 = 2001 UR175 = 2001 VP65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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