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19969 Davidfreedman (1988 PR)
Classification: Main-belt Asteroid          SPK-ID: 2019969
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04229376675516908 5.6893e-08  
a 2.356333221656809 2.0617e-08 AU
q 2.2566750139826 1.3725e-07 AU
i 6.832665478073395 8.2772e-06 deg
node 170.5640100285144 4.7685e-05 deg
peri 110.1025792641674 0.00010647 deg
M 87.64342814255514 9.6729e-05 deg
tp 2456478.859786190158
(2013-Jul-05.35978619)
0.00035404 JED
period 1321.154129014736
3.62
1.7339e-05
4.747e-08
d
yr
n .2724890246291503 3.5763e-09 deg/d
Q 2.455991429331018 2.1489e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      771  
   data-arc span      9101 days (24.92 yr)  
   first obs. used      1988-08-11  
   last obs. used      2013-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50248  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:34:54  

Additional Information
 Earth MOID = 1.25071 AU 
 T_jup = 3.543 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO266060  

19969 Davidfreedman           Discovered 1988 Aug. 11 by A. J. Noymer at Siding Spring.
David A. Freedman (b. 1938), professor of statistics at the University of California, Berkeley, was the 2003 recipient of the National Academy of Sciences' Carty Award. His published books include Statistical models: Theory and Practice, Approximating countable Markov chains and Brownian motion and diffusion.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060413/MPCPages.arcLast Updated: 2006-04-17

[ show close-approach data ]
Alternate Designations
 1988 PR = 1998 HT40 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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