Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
9043 (1991 EJ4)
Classification: Main-belt Asteroid          SPK-ID: 2009043
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1266685127196832 5.6553e-08  
a 3.066152830412872 2.7928e-08 AU
q 2.677767811613226 1.7754e-07 AU
i 4.114574021308496 7.239e-06 deg
node 313.745577160555 6.4673e-05 deg
peri 326.3112169150055 7.0321e-05 deg
M 41.9318480562728 2.4807e-05 deg
tp 2456772.081841046609
(2014-Apr-24.58184105)
0.00013617 JED
period 1961.052065076329
5.37
2.6793e-05
7.336e-08
d
yr
n .1835749322575931 2.5081e-09 deg/d
Q 3.454537849212517 3.1466e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      22063 days (60.41 yr)  
   first obs. used      1954-04-02  
   last obs. used      2014-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48729  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:54:25  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-17 17:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin