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85319 (1995 EJ4)
Classification: Main-belt Asteroid          SPK-ID: 2085319
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127767941224798 5.2682e-08  
a 2.910793205603505 2.2756e-08 au
q 2.538887150392415 1.548e-07 au
i 6.363418206510817 6.2813e-06 deg
node 160.8697211025068 5.0327e-05 deg
peri 242.3090350644825 5.576e-05 deg
M 138.4857795498843 2.6916e-05 deg
tp 2458302.720614527266
(2018-Jul-03.22061453)
0.00013342 TDB
period 1813.908832998254
4.97
2.1271e-05
5.824e-08
d
yr
n .1984664242496395 2.3273e-09 deg/d
Q 3.282699260814595 2.5663e-08 au
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      9184 days (25.14 yr)  
   first obs. used      1995-03-02  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57477  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:35:19  

Additional Information
 Earth MOID = 1.55488 au 
 Jupiter MOID = 2.14315 au 
 T_jup = 3.262 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457134.5 (2015-Apr-22.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127031476093159 5.2628e-08  
q 2.542292124614536 1.5469e-07 au
tp 2456491.113129395840
(2013-Jul-17.61312940)
0.0001311 TDB
node 160.8809213338233 5.0327e-05 deg
peri 242.9699112386613 5.5825e-05 deg
i 6.362067402971652 6.2803e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      365  
   data-arc span      9184 days (25.14 yr)  
   first obs. used      1995-03-02  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57477  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:35:19  

Additional Information
 Jupiter MOID = 2.14315 au 
 T_jup = 3.262 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.769741107694362E-15 -8.074360195505749E-15 -5.024066124943735E-13 -1.562627031800089E-14 -1.132183289581942E-13 9.92787316100758E-16
q -8.074360195505749E-15 2.393021769695541E-14 1.62385167755994E-12 4.564900035822838E-14 3.82065163511309E-13 -2.248439107559582E-15
tp -5.024066124943735E-13 1.62385167755994E-12 1.718833057607445E-8 3.25863035699816E-11 3.203273603576844E-9 5.052041394294302E-14
node -1.562627031800089E-14 4.564900035822838E-14 3.25863035699816E-11 2.532802971765304E-9 -2.510308863070519E-9 3.262145116634319E-11
peri -1.132183289581942E-13 3.82065163511309E-13 3.203273603576844E-9 -2.510308863070519E-9 3.116482520493714E-9 -3.238749927027107E-11
i 9.92787316100758E-16 -2.248439107559582E-15 5.052041394294302E-14 3.262145116634319E-11 -3.238749927027107E-11 3.94424046203471E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO366212  

85319 (1995 EJ4)          Discovered 1995-Mar-02 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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