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9043 (1991 EJ4)
Classification: Main-belt Asteroid          SPK-ID: 2009043
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266685158461125 5.6375e-08  
a 3.066152828723886 2.7793e-08 AU
q 2.677767800552072 1.7681e-07 AU
i 4.114574037086364 7.2352e-06 deg
node 313.7455809598688 6.3417e-05 deg
peri 326.3112124192889 6.9134e-05 deg
M 41.93184938825179 2.4671e-05 deg
tp 2456772.081833979567
(2014-Apr-24.58183398)
0.00013546 JED
period 1961.052063455965
5.37
2.6664e-05
7.3e-08
d
yr
n .183574932409276 2.496e-09 deg/d
Q 3.4545378568957 3.1314e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1193  
   data-arc span      22147 days (60.64 yr)  
   first obs. used      1954-04-02  
   last obs. used      2014-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48514  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:28:21  

Additional Information
 Earth MOID = 1.66395 AU 
 T_jup = 3.216 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO302121  

9043 (1991 EJ4)          Discovered 1991-Mar-12 by Debehogne, H. at La Silla (809)
Reference: 19980808/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 EJ4 = 1982 QD1 = 1982 SX7 = 1986 GK = 1996 AK2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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