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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266552310108576 5.7173e-08  
a 3.066263042606792 3.0263e-08 AU
q 2.677904788605373 1.8111e-07 AU
i 4.114547915674656 7.4374e-06 deg
node 313.7460942903516 7.8304e-05 deg
peri 326.3580089572956 8.411e-05 deg
M 5.181090215480402 3.0343e-05 deg
tp 2456772.275179192469
(2014-Apr-24.77517919)
0.00016532 JED
period 1961.157800408826
5.37
2.9034e-05
7.949e-08
d
yr
n .1835650348610162 2.7176e-09 deg/d
Q 3.454621296608209 3.4096e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      22010 days (60.26 yr)  
   first obs. used      1954-04-02  
   last obs. used      2014-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48766  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:20:51  

Additional Information
 Earth MOID = 1.66219 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 12.4 mag n/a MPO267744  

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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