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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266551747689604 5.9692e-08  
a 3.06626301983137 3.2191e-08 AU
q 2.677904941167028 1.895e-07 AU
i 4.114550681656317 7.8457e-06 deg
node 313.7462374258449 8.9268e-05 deg
peri 326.3578796734816 9.6422e-05 deg
M 5.181085690604687 3.9131e-05 deg
tp 2456772.275204156926
(2014-Apr-24.77520416)
0.00021308 JED
period 1961.157778558354
5.37
3.0884e-05
8.456e-08
d
yr
n .1835650369062278 2.8907e-09 deg/d
Q 3.454621098495712 3.6268e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      21663 days (59.31 yr)  
   first obs. used      1954-04-02  
   last obs. used      2013-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51671  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 19:21:15  

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

[ 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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