Orbit Fit and Astrometric record for 86177

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: 86177     
# Created Sun Dec 17 02:36:29 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   37 observations of   37
# Arc:  13.11y
# First observation: 1999/09/08
#  Last observation: 2012/10/18
# Chi-squared of fit:    69.50 DOF:   68 RMS:  0.24
# Min/Max residuals:    -1.12    0.82
# Exact a, adot, b, bdot, g, gdot:
  1.604101E-05  2.808238E-02  8.820980E-06  1.146127E-02  2.753930E-02 -5.192413E-03
# 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
   -0.315898  -34.660560   -0.336707   -0.005435   -0.942320  2451429.803363
# Heliocentric elements and errors
Epoch:              2451430.5000  =  1999/09/09
Mean Anomaly:          327.98018 +/-     0.000
Argument of Peri:       50.58910 +/-     0.000
Long of Asc Node:      326.62248 +/-     0.000
Inclination:            22.14239 +/-     0.000
Eccentricity:         0.24279719 +/-    0.0000
Semi-Major Axis:     45.59216495 +/-    0.0000
Time of Perihelion: 2461431.6553 +/-       0.0
Perihelion:          34.52251526 +/-    0.0000
Aphelion:            56.66181464 +/-    0.0000
Period (y)              307.8531 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.84186945 +/-    0.0000
Ecliptic Y          -20.90726550 +/-    0.0000
Ecliptic Z           -0.19985762 +/-    0.0000
Ecliptic XDOT         0.00116424 +/-    0.0000
Ecliptic YDOT         0.00259470 +/-    0.0000
Ecliptic ZDOT         0.00114233 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.26100329 +/-    0.0000
Geocenter to KBO     36.31189106 +/-    0.0000
# Hcoef:  7.06

The following table shows the complete astrometric record for 86177. 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 (86177) followed by the observatory code and reference code for the source of the astrometry.

1999 09  08.30262  21 50 52.71   -13 22 20.0   22.5R 86177     568  Ca9937      
1999 09  08.35493  21 50 52.44   -13 22 20.9   22.3R 86177     568  Ca9937      
1999 09  08.40789  21 50 52.18   -13 22 21.8   22.4R 86177     568  Ca9937      
1999 09  10.33157  21 50 42.64   -13 22 57.8   22.0R 86177     568  Ca9937      
1999 09  10.35183  21 50 42.57   -13 22 57.7   22.3R 86177     568  Ca9937      
1999 09  13.29281  21 50 28.32   -13 23 51.2   22.4R 86177     568  Ca9937      
1999 09  13.29978  21 50 28.29   -13 23 51.3   22.4R 86177     568  Ca9937      
1999 09  14.26171  21 50 23.73   -13 24 08.4   22.5R 86177     568  Ca9937      
1999 09  14.26881  21 50 23.68   -13 24 08.3   22.3R 86177     568  Ca9937      
1999 10  09.25434  21 48 44.88   -13 29 42.0   22.7R 86177     568  Ca9937      
1999 10  09.30813  21 48 44.71   -13 29 42.5   22.7R 86177     568  Ca9937      
1999 11  10.27810  21 47 56.93   -13 30 01.3   22.4R 86177     568  Ca9937      
1999 11  11.30924  21 47 57.15   -13 29 52.9   22.4R 86177     568  Ca9937      
1999 11  13.31903  21 47 57.90   -13 29 34.6   22.6R 86177     568  Ca9937      
2000 05  30.54321  22 02 34.56   -11 49 44.2   22.9R 86177     568  Cb6506      
2000 05  31.54440  22 02 34.27   -11 49 38.7   22.9R 86177     568  Cb6506      
2000 06  01.53536  22 02 33.89   -11 49 33.8   22.9R 86177     568  Cb6506      
2001 07  18.48646  22 05 52.30   -10 43 26.3         86177     568  Cd7490      
2001 07  19.48705  22 05 48.026  -10 43 42.34        86177     568  C63761      
2001 09  14.46352  22 00 59.09   -11 03 11.8   22.3R 86177     568  Cd7490      
2001 09  16.43521  22 00 49.69   -11 03 49.8   22.6R 86177     568  Cd7490      
2001 09  20.36628  22 00 31.50   -11 05 04.7   22.2R 86177     568  Cd7490      
2001 09  20.50501  22 00 30.85   -11 05 07.1   22.3R 86177     568  Cd7490      
2004 08  15.42101  22 19 35.06   -07 12 17.4   22.4R 86177     568  Cl1757      
2004 08  15.48369  22 19 34.72   -07 12 18.7   22.2R 86177     568  Cl1757      
2004 08  16.36596  22 19 30.10   -07 12 38.2   22.3R 86177     568  Cl1757      
2008 06  09.31313  22 44 32.87   -02 02 58.1         86177     807  Cz1589      
2008 06  09.41963  22 44 32.85   -02 02 55.9         86177     807  Cz1589      
2012 10  16.02616  22 58 17.19   +02 42 56.6   22.1R 86177     304  C~0pDG      
2012 10  16.10962  22 58 16.86   +02 42 54.3         86177     304  C~0pDG      
2012 10  16.22936  22 58 16.39   +02 42 51.0         86177     304  C~0pDG      
2012 10  17.04280  22 58 13.26   +02 42 28.9         86177     304  C~0pDG      
2012 10  17.11641  22 58 12.96   +02 42 26.9         86177     304  C~0pDG      
2012 10  17.22098  22 58 12.55   +02 42 24.1         86177     304  C~0pDG      
2012 10  18.03213  22 58 09.49   +02 42 02.4         86177     304  C~0pDG      
2012 10  18.09301  22 58 09.27   +02 42 00.7         86177     304  C~0pDG      
2012 10  18.15532  22 58 09.03   +02 41 58.8         86177     304  C~0pDG      

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    -0.16       0.00    -1.12
  2   0.0001      0.00     0.17       0.00    -0.32
  3   0.0003      0.00     0.30       0.00    -0.22
  4   0.0056      0.00    -0.28       0.00    -0.32
  5   0.0056      0.00     0.19       0.00     0.16
  6   0.0137      0.00    -0.14       0.00    -0.12
  7   0.0137      0.00    -0.08       0.00    -0.10
  8   0.0163      0.00     0.02       0.00    -0.26
  9   0.0163      0.00    -0.22       0.00    -0.04
 10   0.0847      0.00     0.08       0.00     0.15
 11   0.0849      0.00     0.05       0.00     0.11
 12   0.1724      0.00    -0.08       0.00    -0.24
 13   0.1752      0.00     0.03       0.00    -0.25
 14   0.1807      0.00     0.07       0.00    -0.02
 15   0.7262      0.00     0.00       0.00     0.33
 16   0.7289      0.00    -0.04       0.00     0.29
 17   0.7316      0.00     0.01       0.00     0.23
 18   1.8595      0.00    -0.02       0.00     0.29
 19   1.8622      0.00     0.49       0.00     0.01
 20   2.0182      0.00     0.20       0.00     0.16
 21   2.0236      0.00     0.30       0.00     0.82
 22   2.0344      0.00     0.17       0.00     0.23
 23   2.0348      0.00    -0.01       0.00     0.36
 24   4.9367      0.00    -0.09       0.00    -0.12
 25   4.9368      0.00    -0.18       0.00    -0.04
 26   4.9393      0.00    -0.21       0.00    -0.14
 27   8.7529      0.00    -0.05       0.00    -0.43
 28   8.7532      0.00    -0.14       0.00    -0.03
 29  13.1053      0.00     0.01       0.00     0.00
 30  13.1056      0.00     0.07       0.00    -0.01
 31  13.1059      0.00     0.16       0.00    -0.04
 32  13.1081      0.00     0.15       0.00     0.00
 33  13.1083      0.00    -0.01       0.00    -0.00
 34  13.1086      0.00    -0.04       0.00     0.03
 35  13.1108      0.00    -0.03       0.00     0.22
 36  13.1110      0.00     0.19       0.00     0.15
 37  13.1112      0.00     0.18       0.00    -0.07

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.

86177    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        45.539    45.539    45.539
ecceobj         0.242     0.242     0.242
incobj         22.153    22.153    22.153
qmin           33.671    33.518    33.462
qmax           57.459    57.587    57.648
amean          45.314    45.312    45.298
amin           44.896    44.859    44.887
amax           45.804    45.821    45.799
emean           0.237     0.238     0.238
emin            0.217     0.218     0.215
emax            0.256     0.259     0.259
imean          23.312    23.245    23.262
imin           22.620    22.559    22.563
imax           23.948    23.889    23.929
excite_mean     0.461     0.461     0.461
fracstop        1.000     1.000     1.000
cjmean          2.853     2.853     2.853

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       173.0     172.4     172.0
kozaiamp        180.0     180.0     180.0