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85946 (1999 EJ8)
Classification: Main-belt Asteroid          SPK-ID: 2085946
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06929622855617508 4.4572e-08  
a 2.644027341977749 1.6716e-08 au
q 2.460806218979283 1.1848e-07 au
i 2.321256580939019 5.6935e-06 deg
node 166.5506596230385 0.00012285 deg
peri 104.7945151162347 0.00013027 deg
M 225.9314409693008 4.6157e-05 deg
tp 2459585.319413014896
(2022-Jan-05.81941301)
0.00020264 TDB
period 1570.353185023446
4.30
1.4892e-05
4.077e-08
d
yr
n .2292477917918987 2.174e-09 deg/d
Q 2.827248464976215 1.7874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      506  
   data-arc span      10486 days (28.71 yr)  
   first obs. used      1991-04-21  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 13:24:22  

Additional Information
 Earth MOID = 1.44588 au 
 Jupiter MOID = 2.22567 au 
 T_jup = 3.389 
[ show covariance matrix ]

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 15.9   n/a MPO266309  

85946 (1999 EJ8)          Discovered 1999-Mar-14 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 EJ8 = 2001 SJ243 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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