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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585927923984998 4.4327e-08  
a 2.395745753735463 1.2022e-08 au
q 2.015797744773708 1.0678e-07 au
i 2.586890685067196 6.4925e-06 deg
node 26.48623273563702 0.00010368 deg
peri 90.37519372987398 0.00010581 deg
M 184.3792107295446 2.096e-05 deg
tp 2458061.243563638741
(2017-Nov-03.74356364)
7.9953e-05 JED
period 1354.4392090371
3.71
1.0195e-05
2.791e-08
d
yr
n .2657926598683833 2.0006e-09 deg/d
Q 2.775693762697219 1.3929e-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 = 1.03395 au 
 Jupiter MOID = 2.31948 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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