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6904 McGill (1990 QW1)
Classification: Main-belt Asteroid          SPK-ID: 2006904
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104799347464255 5.905e-08  
a 2.480547347465608 1.3626e-08 AU
q 2.220587604097024 1.4705e-07 AU
i 5.73675170567128 5.9719e-06 deg
node 344.0681028501942 5.8074e-05 deg
peri 80.37989656283617 6.4403e-05 deg
M 9.505511845632894 2.8024e-05 deg
tp 2456962.821577206914
0.00011103 JED
period 1426.985987266211
n .2522799825733961 2.0787e-09 deg/d
Q 2.740507090834193 1.5054e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      23207 days (63.54 yr)  
   first obs. used      1951-08-11  
   last obs. used      2015-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4944  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:06:15  

Additional Information
 Earth MOID = 1.24195 AU 
 T_jup = 3.464 
[ 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 14.1 mag n/a PDS3 (MPC 28116)  

6904 McGill           Discovered 1990 Aug. 22 by H. E. Holt at Palomar.
One of Canada's oldest and most highly regarded universities, McGill (founded 1838) has enjoyed a first-rate reputation. Once home to Stephen Leacock and physicist Ernest Rutherford, the university has done pioneering research both on the earth in medicine and in space through its department of earth and planetary sciences.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1990 QW1 = 1992 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-31 02:03 UT
(server date/time)  
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