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70207 Davidunlap (1999 RP33)
Classification: Main-belt Asteroid          SPK-ID: 2070207
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09644875253462064 6.4065e-08  
a 2.39128930011729 1.4117e-08 au
q 2.160652430171591 1.5178e-07 au
i 7.057249361642554 8.6886e-06 deg
node 7.859866057199876 4.0239e-05 deg
peri 52.19072497971784 6.2186e-05 deg
M 146.7134990762686 4.4511e-05 deg
tp 2457050.054682030360
0.0001669 JED
period 1350.661770843986
n .2665360105476645 2.3603e-09 deg/d
Q 2.621926170062989 1.5479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      857  
   data-arc span      8597 days (23.54 yr)  
   first obs. used      1992-10-01  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48681  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 15:07:34  

Additional Information
 Earth MOID = 1.17873 au 
 Jupiter MOID = 2.65266 au 
 T_jup = 3.515 
[ 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 15.1 mag n/a MPO319889  

70207 Davidunlap           Discovered 1999 Sept. 4 by M. Collins and M. White at Anza.
David Alexander Dunlap (1863-1924), born in Pembroke, Ontario, a mining magnate, philanthropist and amateur astronomer, was the namesake of the David Dunlap Observatory, location of Canada's largest optical telescope, and where the first black-hole candidate Cygnus X-1 was discovered and confirmed.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

Alternate Designations
 1999 RP33 = 2001 CW8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-06 03:34 UT
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