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
JPL Small-Body Database Browser
Search: [ help ]  
9279 Seager (1981 EY12)
Classification: Main-belt Asteroid          SPK-ID: 2009279
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874244943663868 4.6786e-08  
a 2.452572267146345 1.4071e-08 AU
q 1.992900150079418 1.167e-07 AU
i 8.309957489448772 7.8697e-06 deg
node 209.7061546718518 3.2596e-05 deg
peri 260.9224102763948 4.022e-05 deg
M 333.0277443721552 2.0613e-05 deg
tp 2457105.610454205836
8.0251e-05 JED
period 1402.914314479392
n .256608686848842 2.2083e-09 deg/d
Q 2.912244384213272 1.6708e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      12941 days (35.43 yr)  
   first obs. used      1979-09-18  
   last obs. used      2015-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48575  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:17:42  

Additional Information
 Earth MOID = 1.02915 AU 
 T_jup = 3.456 
[ 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 14.3 mag n/a MPO319201  

9279 Seager           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring.
Sara Seager (b. 1971) is a professor of physics and planetary science at the Massachusetts Institute of Technology. An expert and textbook editor in the field of exoplanets, she is also dedicated to innovative small satellite technologies for exoplanet transit and asteroid detections.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-07-12Last Updated: 2014-08-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-29 13:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin