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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04208794759847233 4.1722e-08  
a 2.189576461304292 5.6471e-09 au
q 2.097421681938069 9.2245e-08 au
i 3.167632076324994 4.478e-06 deg
node 162.319759180621 5.5323e-05 deg
peri 19.01175992936741 6.8714e-05 deg
M 328.4977278654308 4.1398e-05 deg
tp 2459104.056646562341
0.00013615 TDB
period 1183.419170629693
n .3042032856442958 1.1768e-09 deg/d
Q 2.281731240670516 5.8848e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2618  
   data-arc span      31725 days (86.86 yr)  
   first obs. used      1933-03-25  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:43:17  

Additional Information
 Earth MOID = 1.09985 au 
 Jupiter MOID = 2.67438 au 
 T_jup = 3.671 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO502184  
diameter diameter 5.228 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.309   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Apr-05 04:15 UT
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