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6948 Gounelle (1981 ET22)
Classification: Main-belt Asteroid          SPK-ID: 2006948
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .158453520695051 4.4327e-08  
a 2.39598741022373 1.2057e-08 au
q 2.016334769532762 1.0681e-07 au
i 2.586903164286777 6.4926e-06 deg
node 26.48511150117794 0.00010367 deg
peri 90.37989955776277 0.0001058 deg
M 237.5212625121272 2.106e-05 deg
tp 2458061.375290831010
(2017-Nov-03.87529083)
8.0036e-05 JED
period 1354.644145606023
3.71
1.0225e-05
2.799e-08
d
yr
n .2657524495770422 2.0059e-09 deg/d
Q 2.775640050914697 1.3967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      23592 days (64.59 yr)  
   first obs. used      1950-12-09  
   last obs. used      2015-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49563  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:20:45  

Additional Information
 Earth MOID = 1.03308 au 
 Jupiter MOID = 2.31859 au 
 T_jup = 3.510 
[ 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 14.4 mag n/a MPO279588  

6948 Gounelle           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Matthieu Gounelle (b. 1971) is curator of meteorites at Muséum National d´Histoire Naturelle in Paris. His research encompasses both physical and theoretical studies focused on the evolution of the early solar system.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

Alternate Designations
 1981 ET22 = 1990 QL7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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