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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266685078319806 5.6685e-08  
a 3.066152837059774 2.8437e-08 AU
q 2.677767832404619 1.7831e-07 AU
i 4.114574227427428 7.2835e-06 deg
node 313.7455841868864 6.9543e-05 deg
peri 326.3112169764761 7.5078e-05 deg
M 41.9318384844244 2.6016e-05 deg
tp 2456772.081892445221
(2014-Apr-24.58189245)
0.00014253 JED
period 1961.052071453174
5.37
2.7281e-05
7.469e-08
d
yr
n .1835749316606538 2.5538e-09 deg/d
Q 3.45453784171493 3.2039e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      22041 days (60.34 yr)  
   first obs. used      1954-04-02  
   last obs. used      2014-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48909  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:13:51  

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

[ show close-approach data ]
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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