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4719 Burnaby (1990 WT2)
Classification: Main-belt Asteroid          SPK-ID: 2004719
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730699076003905 5.0166e-08  
a 2.699442091321715 1.8329e-08 au
q 2.23224989800406 1.3421e-07 au
i 7.463640112586345 6.1571e-06 deg
node 1.785720464577131 4.1573e-05 deg
peri 115.327747198319 4.4945e-05 deg
M 270.2856681154967 1.7664e-05 deg
tp 2458004.209320734394
8.1042e-05 JED
period 1619.979243132347
n .2222250695656532 2.2634e-09 deg/d
Q 3.166634284639369 2.1501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1055  
   data-arc span      17082 days (46.77 yr)  
   first obs. used      1969-01-15  
   last obs. used      2015-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52651  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 15:47:34  

Additional Information
 Earth MOID = 1.25878 au 
 Jupiter MOID = 1.95627 au 
 T_jup = 3.334 
[ 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 12.4 mag n/a MPO263389  
rotation period rot_per 13.01 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2013) Minor Planet Bul. 40, 137-145.]
SMASSII spectral type spec_B C   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)

4719 Burnaby (1990 WT2)          Discovered 1990-Nov-21 by Ueda and Kaneda at Kushiro
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 WT2 = 1969 AC = 1972 XS = 1985 SY5 = 1987 EZ = 1989 RW4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-06 13:01 UT
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