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3282 Spencer Jones (1949 DA)
Classification: Main-belt Asteroid          SPK-ID: 2003282
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04195719834093334 6.307e-08  
a 2.189544109323739 8.9063e-09 AU
q 2.097676972852621 1.3819e-07 AU
i 3.167673264788939 6.4161e-06 deg
node 162.3449241007625 9.5384e-05 deg
peri 19.45044188393362 0.0001131 deg
M 79.65968212762468 6.0152e-05 deg
tp 2456738.642484379181
(2014-Mar-22.14248438)
0.00019777 JED
period 1183.392942397945
3.24
7.2204e-06
1.977e-08
d
yr
n .3042100278801064 1.8561e-09 deg/d
Q 2.281411245794857 9.28e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1383  
   data-arc span      29678 days (81.25 yr)  
   first obs. used      1933-03-25  
   last obs. used      2014-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4851  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:00:41  

Additional Information
 Earth MOID = 1.1012 AU 
 T_jup = 3.671 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a PDS3 (MPC 17268)  

3282 Spencer Jones (1949 DA)          Discovered 1949-Feb-19 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1949 DA = 1933 FL1 = 1933 HN = 1973 SL6 = 1975 EU2 = 1988 DE1 = 9528 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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