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7973 Koppeschaar (1344 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2007973
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08842745947499592 5.6451e-08  
a 2.868365190796277 2.2371e-08 AU
q 2.61472294412765 1.6026e-07 AU
i 2.326947174734068 6.093e-06 deg
node 137.724109691536 0.0001565 deg
peri 315.472815661171 0.00016193 deg
M 91.15438142211474 4.1046e-05 deg
tp 2456551.211668590277
(2013-Sep-15.71166859)
0.00020225 JED
period 1774.394129871851
4.86
2.0758e-05
5.683e-08
d
yr
n .2028861536112045 2.3735e-09 deg/d
Q 3.122007437464903 2.4349e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      836  
   data-arc span      23503 days (64.35 yr)  
   first obs. used      1951-02-04  
   last obs. used      2015-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53982  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:58:13  

Additional Information
 Earth MOID = 1.63182 AU 
 T_jup = 3.292 
[ 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 14.1 mag n/a MPO337323  

7973 Koppeschaar           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Carl Egon Koppeschaar is a science writer and reporter in the Netherlands. He is internationally known for popularizing astrophysics and space science, for debunking pseudoscience, and for taking action against light pollution. His Moon Handbook: a 21st-Century Travel Guide is a delight.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1344 T-2 = 1990 EO5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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