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3819 Robinson (1983 AR)
Classification: Main-belt Asteroid          SPK-ID: 2003819
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.

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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359486403106016 6.9936e-08  
a 2.772507320703444 2.1935e-08 AU
q 2.395588720202622 1.9133e-07 AU
i 11.09670074521954 8.1691e-06 deg
node 46.33707448981223 3.2427e-05 deg
peri 351.8909581744721 4.0674e-05 deg
M 27.18794325310692 2.351e-05 deg
tp 2456873.155165528706
0.00010994 JED
period 1686.19376548195
n .2134985951019125 2.5336e-09 deg/d
Q 3.149425921204266 2.4916e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      929  
   data-arc span      23358 days (63.95 yr)  
   first obs. used      1951-03-09  
   last obs. used      2015-02-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49709  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 13:50:09  

Additional Information
 Earth MOID = 1.40376 AU 
 T_jup = 3.296 
[ 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 11.9 mag n/a MPO296165  
SMASSII spectral type spec_B Sr   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3819 Robinson (1983 AR)          Discovered 1983-Jan-12 by Skiff, B. A. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1983 AR = 1951 EB1 = 1972 TW = 1986 VF1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Apr-02 07:48 UT
(server date/time)  
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