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6904 McGill (1990 QW1)
Classification: Main-belt Asteroid          SPK-ID: 2006904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1056489777132245 4.0674e-08  
a 2.480704962964546 8.3451e-09 au
q 2.218621019619219 1.0122e-07 au
i 5.735844223795815 3.7845e-06 deg
node 344.0331862232973 3.9657e-05 deg
peri 79.82963198816095 4.3031e-05 deg
M 205.0618036565687 1.8728e-05 deg
tp 2459814.710300394639
(2022-Aug-23.21030039)
7.5702e-05 TDB
period 1427.121996773163
3.91
7.2013e-06
1.972e-08
d
yr
n .2522559394459541 1.2729e-09 deg/d
Q 2.742788906309873 9.2267e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1664  
   data-arc span      25174 days (68.92 yr)  
   first obs. used      1951-08-11  
   last obs. used      2020-07-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48712  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:51  

Additional Information
 Earth MOID = 1.23959 au 
 Jupiter MOID = 2.51923 au 
 T_jup = 3.464 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456678.5 (2014-Jan-21.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1048058190869586 4.0553e-08  
q 2.220733220858962 1.0066e-07 au
tp 2456962.538375415727
(2014-Nov-01.03837542)
7.0678e-05 TDB
node 344.0686347370887 3.9655e-05 deg
peri 80.29164981112359 4.3092e-05 deg
i 5.736581667898571 3.7827e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1664  
   data-arc span      25174 days (68.92 yr)  
   first obs. used      1951-08-11  
   last obs. used      2020-07-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48712  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:12:51  

Additional Information
 Jupiter MOID = 2.51923 au 
 T_jup = 3.464 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.644513832279266E-15 -4.070537448067833E-15 -5.778194126254472E-13 -1.374788512340066E-14 -1.727601774070784E-13 -1.043177918464497E-15
q -4.070537448067833E-15 1.013255015112333E-14 1.589125186660017E-12 3.415380884139169E-14 4.623624673443946E-13 2.614161075577412E-15
tp -5.778194126254472E-13 1.589125186660017E-12 4.995415980423473E-9 2.415253592398913E-11 1.208653694157183E-9 6.631964889351347E-13
node -1.374788512340066E-14 3.415380884139169E-14 2.415253592398913E-11 1.572483300418707E-9 -1.558242079041585E-9 4.652205897219926E-11
peri -1.727601774070784E-13 4.623624673443946E-13 1.208653694157183E-9 -1.558242079041585E-9 1.856885768652817E-9 -4.611958576812E-11
i -1.043177918464497E-15 2.614161075577412E-15 6.631964889351347E-13 4.652205897219926E-11 -4.611958576812E-11 1.430849516841653E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.26   n/a E2021B10  

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

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Alternate Designations
 1990 QW1 = 1992 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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