Orbit Fit and Astrometric record for 88267

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 88267     
# Created Wed Oct 18 01:36:27 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   31 observations of   31
# Arc:   4.18y
# First observation: 2001/05/22
#  Last observation: 2005/07/26
# Chi-squared of fit:    41.14 DOF:   56 RMS:  0.20
# Min/Max residuals:    -0.38    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.431917E-05  2.288554E-02 -2.166344E-07 -1.136269E-04  2.385151E-02  5.389052E-04
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.417185 -121.989196   -0.055359    0.007278   -1.017217  2452051.694693
# Heliocentric elements and errors
Epoch:              2452052.5000  =  2001/05/23
Mean Anomaly:           98.15388 +/-     0.000
Argument of Peri:       23.56195 +/-     0.000
Long of Asc Node:      113.40921 +/-     0.000
Inclination:             0.49533 +/-     0.000
Eccentricity:         0.02624891 +/-    0.0000
Semi-Major Axis:     42.74915299 +/-    0.0000
Time of Perihelion: 2424217.2799 +/-       0.0
Perihelion:          41.62703440 +/-    0.0000
Aphelion:            43.87127159 +/-    0.0000
Period (y)              279.5114 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.69810694 +/-    0.0000
Ecliptic Y          -36.44562440 +/-    0.0000
Ecliptic Z            0.30526212 +/-    0.0000
Ecliptic XDOT         0.00218683 +/-    0.0000
Ecliptic YDOT        -0.00144191 +/-    0.0000
Ecliptic ZDOT        -0.00001240 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.93692322 +/-    0.0000
Geocenter to KBO     41.92608987 +/-    0.0000
# Hcoef:  6.70

The following table shows the complete astrometric record for 88267. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (88267) followed by the observatory code and reference code for the source of the astrometry.

2001 05  22.19395  15 43 24.61   -19 18 37.2   22.5R 88267     807  Cd1816      
2001 05  22.27331  15 43 24.21   -19 18 35.9         88267     807  Cd1816      
2001 06  10.02005  15 41 55.92   -19 13 51.8   23.3R 88267     304  Cd1816      
2001 06  10.09499  15 41 55.57   -19 13 50.5         88267     304  Cd1816      
2001 08  19.01261  15 39 24.82   -19 06 09.4   21.1R 88267     807  Ch1324      
2001 08  20.00889  15 39 25.71   -19 06 13.1         88267     807  Ch1324      
2001 08  21.01634  15 39 26.66   -19 06 16.8         88267     807  Ch1324      
2002 08  09.06743  15 44 38.68   -19 23 33.8   22.4R 88267     807  Cg3190      
2002 08  10.06390  15 44 38.44   -19 23 33.5         88267     807  Cg3190      
2002 08  11.06858  15 44 38.33   -19 23 33.8         88267     807  Cg3190      
2002 08  12.06326  15 44 38.29   -19 23 34.3         88267     807  Cg3190      
2003 04  29.48928  15 56 04.43   -19 58 40.0   23.8R 88267     568  Ch9866      
2003 04  29.55598  15 56 04.08   -19 58 39.3         88267     568  Ch9866      
2003 04  30.55938  15 55 59.60   -19 58 26.0         88267     568  Ch9866      
2003 05  30.20937  15 53 37.44   -19 51 21.7   22.6R 88267     807  Cj8695      
2003 05  30.29412  15 53 37.04   -19 51 19.9         88267     807  Cj8695      
2004 05  27.12837  15 59 15.22   -20 08 20.4   23.0R 88267     304  Ck8652      
2004 05  27.13214  15 59 15.19   -20 08 20.3         88267     304  Ck8652      
2004 05  27.13565  15 59 15.18   -20 08 20.2         88267     304  Ck8652      
2004 05  27.13873  15 59 15.16   -20 08 20.2         88267     304  Ck8652      
2004 05  27.14179  15 59 15.15   -20 08 20.2         88267     304  Ck8652      
2004 05  27.14486  15 59 15.13   -20 08 20.2         88267     304  Ck8652      
2004 05  27.14843  15 59 15.12   -20 08 20.1         88267     304  Ck8652      
2004 05  27.15219  15 59 15.10   -20 08 20.1         88267     304  Ck8652      
2004 05  27.15595  15 59 15.09   -20 08 20.0         88267     304  Ck8652      
2004 05  27.15971  15 59 15.06   -20 08 20.1         88267     304  Ck8652      
2004 05  27.16355  15 59 15.04   -20 08 19.9         88267     304  Ck8652      
2004 05  27.16731  15 59 15.02   -20 08 19.9         88267     304  Ck8652      
2005 07  26.55270  16 00 55.12   -20 13 53.2   22.9R 88267     250  S~06GW      
2005 07  26.55941  16 00 55.11   -20 13 53.2         88267     250  S~06GW      
2005 07  26.56612  16 00 55.09   -20 13 53.2         88267     250  S~06GW      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.08       0.00     0.19
  2   0.0002      0.00     0.13       0.00     0.02
  3   0.0515      0.00    -0.03       0.00    -0.10
  4   0.0517      0.00    -0.19       0.00     0.14
  5   0.2432      0.00    -0.01       0.00     0.19
  6   0.2459      0.00     0.30       0.00     0.04
  7   0.2487      0.00    -0.07       0.00     0.25
  8   1.2153      0.00     0.25       0.00    -0.24
  9   1.2180      0.00    -0.13       0.00     0.01
 10   1.2207      0.00     0.05       0.00    -0.04
 11   1.2235      0.00    -0.17       0.00     0.02
 12   1.9365      0.00     0.60       0.00    -0.07
 13   1.9367      0.00    -0.11       0.00    -0.26
 14   1.9394      0.00     0.05       0.00    -0.38
 15   2.0206      0.00    -0.05       0.00     0.11
 16   2.0208      0.00     0.20       0.00     0.68
 17   3.0142      0.00     0.03       0.00    -0.14
 18   3.0142      0.00    -0.14       0.00    -0.09
 19   3.0142      0.00    -0.03       0.00    -0.04
 20   3.0142      0.00    -0.10       0.00    -0.09
 21   3.0142      0.00    -0.02       0.00    -0.13
 22   3.0142      0.00    -0.09       0.00    -0.17
 23   3.0142      0.00     0.02       0.00    -0.12
 24   3.0143      0.00     0.00       0.00    -0.17
 25   3.0143      0.00     0.13       0.00    -0.12
 26   3.0143      0.00    -0.04       0.00    -0.28
 27   3.0143      0.00    -0.05       0.00    -0.13
 28   3.0143      0.00    -0.07       0.00    -0.18
 29   4.1789      0.00     0.33       0.00     0.36
 30   4.1790      0.00     0.36       0.00     0.33
 31   4.1790      0.00     0.25       0.00     0.30

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

88267    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.737    42.737    42.737
ecceobj         0.024     0.024     0.024
incobj          0.496     0.496     0.496
qmin           40.803    40.798    40.807
qmax           45.469    45.473    45.468
amean          43.029    43.028    43.028
amin           42.697    42.699    42.696
amax           43.369    43.364    43.365
emean           0.029     0.029     0.029
emin            0.010     0.010     0.010
emax            0.049     0.049     0.049
imean           1.674     1.674     1.674
imin            0.524     0.524     0.525
imax            2.388     2.388     2.388
excite_mean     0.043     0.043     0.043
fracstop        1.000     1.000     1.000
cjmean          3.088     3.088     3.088

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       165.6     165.5     165.7
kozaiamp        180.0     180.0     180.0