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7392 Kowalski (1984 EX)
Classification: Main-belt Asteroid          SPK-ID: 2007392
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1274147225472681 2.5326e-08  
a 2.754969733894907 9.8399e-09 au
q 2.403946029624566 7.0736e-08 au
i 4.95251026804828 3.8076e-07 deg
node 346.7987953336047 9.6428e-06 deg
peri 204.7384548844059 1.0241e-05 deg
M 358.5230208075882 4.122e-06 deg
tp 2459207.352444886263
(2020-Dec-23.85244489)
1.9132e-05 TDB
period 1670.219981248563
4.57
8.9483e-06
2.45e-08
d
yr
n .215540470142672 1.1548e-09 deg/d
Q 3.105993438165247 1.1094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2572  
   data-arc span      13539 days (37.07 yr)  
   first obs. used      1984-02-26  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:25:49  

Additional Information
 Earth MOID = 1.40459 au 
 Jupiter MOID = 1.86133 au 
 T_jup = 3.327 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456778.5 (2014-May-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286668820359523 2.5336e-08  
q 2.399647290321713 7.0831e-08 au
tp 2457538.528122247243
(2016-May-30.02812225)
1.8614e-05 TDB
node 346.8345078123818 9.6399e-06 deg
peri 205.1440308547424 1.0191e-05 deg
i 4.954955533062089 3.8061e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2572  
   data-arc span      13539 days (37.07 yr)  
   first obs. used      1984-02-26  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43861  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:25:49  

Additional Information
 Jupiter MOID = 1.86133 au 
 T_jup = 3.327 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.419198262649561E-16 -1.781583191225455E-15 2.597770967364187E-13 5.285569971988074E-14 5.419359629792992E-14 5.909261636367136E-16
q -1.781583191225455E-15 5.017020325048462E-15 -7.547783984249208E-13 -1.486636516305174E-13 -1.595360971522696E-13 -1.599735462178889E-15
tp 2.597770967364187E-13 -7.547783984249208E-13 3.464881591836129E-10 1.903154827730089E-11 8.062531335544487E-11 6.495509962982722E-13
node 5.285569971988074E-14 -1.486636516305174E-13 1.903154827730089E-11 9.292779294859597E-11 -8.257803469001338E-11 1.056244583687476E-12
peri 5.419359629792992E-14 -1.595360971522696E-13 8.062531335544487E-11 -8.257803469001338E-11 1.038501500823354E-10 -8.6037211537311E-13
i 5.909261636367136E-16 -1.599735462178889E-15 6.495509962982722E-13 1.056244583687476E-12 -8.6037211537311E-13 1.448662005654018E-13

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 12.80   n/a MPCxxxxx  

7392 Kowalski           Discovered 1984 Mar. 6 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Richard Kowalski (b. 1963) of Quail Hollow Observatory, near Tampa, Florida. Kowalski is engaged in follow-up and discovery work on minor planets and comets. In 1998 he founded and has energetically maintained the Minor Planet Mailing List, a web-based information service and chat group for amateur and professional observers. Kowalski has also been the main organizer of the 1999 Amateur-Professional Minor Planet Workshop at the Lowell Observatory. Citation written by the discoverer and P. G. Comba.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1984 EX = 1990 RA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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