Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
305847 (2009 EJ4)
Classification: Main-belt Asteroid          SPK-ID: 2305847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1766118840370361 4.0517e-08  
a 2.314652795746535 1.6201e-08 au
q 1.905857604598147 9.6337e-08 au
i 2.872667801116665 4.2794e-06 deg
node 106.5613092015473 0.00011846 deg
peri 15.53784626643842 0.0001197 deg
M 353.2423679141638 1.7077e-05 deg
tp 2458624.644557567995
(2019-May-21.14455757)
6.1044e-05 TDB
period 1286.255394503689
3.52
1.3505e-05
3.697e-08
d
yr
n .2798822081044867 2.9385e-09 deg/d
Q 2.723447986894923 1.9063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      6142 days (16.82 yr)  
   first obs. used      2002-03-10  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:03:07  

Additional Information
 Earth MOID = .922188 au 
 Jupiter MOID = 2.35099 au 
 T_jup = 3.559 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO418595  

305847 (2009 EJ4)          Discovered 2009-Mar-15 by La Sagra at La Sagra
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin