Orbit Fit and Astrometric record for 10GB174

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: 10GB174   
# Created Tue Oct 24 01:37:49 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   2.64y
# First observation: 2009/06/26
#  Last observation: 2012/02/16
Preliminary a, adot, b, bdot, g, gdot:
   0.000171   0.012779   0.000044   0.003030   0.014880   0.000000
# Chi-squared of fit:     4.10 DOF:   30 RMS:  0.08
# Min/Max residuals:    -0.24    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.383856E-05  1.296806E-02  3.445903E-06  3.074138E-03  1.486312E-02  7.568912E-03
# Covariance matrix:
  4.4110E-13 -4.3922E-13  6.6255E-14 -7.6457E-14 -3.2964E-13 -8.3625E-12
 -4.3922E-13  6.9250E-13 -8.1549E-14  1.3808E-13  3.2130E-13  1.3656E-11
  6.6255E-14 -8.1549E-14  2.9078E-13 -1.6194E-13 -1.8831E-13 -3.0650E-12
 -7.6457E-14  1.3808E-13 -1.6194E-13  1.4154E-13  1.0735E-13  3.4800E-12
 -3.2964E-13  3.2130E-13 -1.8831E-13  1.0735E-13  1.1480E-12  1.5359E-11
 -8.3625E-12  1.3656E-11 -3.0650E-12  3.4800E-12  1.5359E-11  3.8250E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   17.210611 -178.521142   -1.011018   -0.015943    0.051349  2455008.779406
# Heliocentric elements and errors
Epoch:              2455000.5000  =  2009/06/18
Mean Anomaly:            3.28206 +/-     0.054
Argument of Peri:      347.04609 +/-     0.060
Long of Asc Node:      130.83270 +/-     0.003
Inclination:            21.59439 +/-     0.001
Eccentricity:         0.85831697 +/-    0.0017
Semi-Major Axis:    342.69185498 +/-    3.7625
Time of Perihelion: 2433875.4587 +/-       9.1
Perihelion:          48.55362041 +/-    0.7898
Aphelion:           636.83008956 +/-    7.0162
Period (y)             6344.0102 +/-    104.48
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -64.16364936 +/-    0.0046
Ecliptic Y           -2.67273134 +/-    0.0001
Ecliptic Z           19.90758647 +/-    0.0014
Ecliptic XDOT        -0.00109756 +/-    0.0000
Ecliptic YDOT        -0.00241359 +/-    0.0000
Ecliptic ZDOT         0.00095335 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   67.23413858 +/-    0.0044
Geocenter to KBO     67.28060408 +/-    0.0049
# Hcoef:  7.04

The following table shows the complete astrometric record for 10GB174. 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 (10GB174) followed by the observatory code and reference code for the source of the astrometry.

2009 06  26.278640 12 33 26.223  +15 10 07.53        10GB174   568  C~0rTd      
2009 06  26.326870 12 33 26.224  +15 10 06.73        10GB174   568  C~0rTd      
2009 06  26.342950 12 33 26.246  +15 10 06.38        10GB174   568  C~0rTd      
2010 04  12.348651 12 38 29.365  +15 02 45.54  25.0g 10GB174   568  C~0rTd      
2010 04  13.294388 12 38 26.725  +15 02 59.07  25.0g 10GB174   568  C~0rTd      
2010 04  13.409538 12 38 26.394  +15 03 00.74  25.0g 10GB174   568  C~0rTd      
2010 04  13.466308 12 38 26.244  +15 03 01.51  25.1g 10GB174   568  C~0rTd      
2010 05  14.453536 12 37 10.817  +15 07 05.83  24.5i 10GB174   568  C~0rTd      
2010 05  17.282017 12 37 05.488  +15 07 07.59  24.8i 10GB174   568  C~0rTd      
2010 05  17.320960 12 37 05.416  +15 07 07.53  24.8i 10GB174   568  C~0rTd      
2011 05  02.159120 12 40 41.304  +14 57 20.25        10GB174   304  C~0rTd      
2011 05  02.202848 12 40 41.187  +14 57 20.61        10GB174   304  C~0rTd      
2011 05  03.078481 12 40 39.114  +14 57 26.27        10GB174   304  C~0rTd      
2011 05  03.133521 12 40 38.978  +14 57 26.44        10GB174   304  C~0rTd      
2011 06  26.273727 12 39 32.060  +14 52 50.82        10GB174   568  C~0rTd      
2012 02  16.512841 12 46 54.162  +14 24 55.89        10GB174   568  C~0rTd      
2012 02  16.519766 12 46 54.156  +14 24 56.26        10GB174   568  C~0rTd      
2012 02  16.561832 12 46 54.073  +14 24 57.19        10GB174   568  C~0rTd      

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    -0.01       0.00    -0.04
  2   0.0001      0.34    -0.13      -0.72    -0.09
  3   0.0002      0.78     0.15      -0.91    -0.05
  4   0.7942   4178.75    -0.09    1418.17     0.02
  5   0.7968   4138.33    -0.00    1414.51    -0.04
  6   0.7971   4133.27    -0.07    1414.03    -0.04
  7   0.7972   4130.98     0.10    1413.82     0.00
  8   0.8821   3035.70     0.02    1180.81     0.14
  9   0.8898   2964.77     0.01    1150.31     0.14
 10   0.8899   2963.84     0.06    1149.82     0.09
 11   1.8477   6052.42     0.01    1922.84     0.09
 12   1.8478   6050.73    -0.15    1922.45     0.08
 13   1.8502   6021.06    -0.01    1914.98    -0.06
 14   1.8504   6019.20     0.02    1914.31    -0.24
 15   1.9986   5253.23     0.06    1257.41    -0.01
 16   2.6427  11788.93     0.01    2448.68    -0.11
 17   2.6427  11788.69     0.01    2448.98     0.11
 18   2.6428  11787.20     0.01    2449.31    -0.01

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.

10GB174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       347.009   358.703   335.991
ecceobj         0.861     0.866     0.856
incobj         21.569    21.570    21.569
qmin           45.118    44.895    45.410
qmax          719.702   745.678   692.629
amean         353.711   363.855   340.363
amin          344.281   346.353   323.403
amax          384.169   397.094   370.709
emean           0.862     0.867     0.856
emin            0.852     0.857     0.847
emax            0.873     0.878     0.868
imean          20.190    20.206    20.221
imin           19.491    19.438    19.489
imax           21.004    21.020    21.020
excite_mean     0.928     0.933     0.924
fracstop        1.000     1.000     1.000
cjmean          3.349     3.339     3.346

libcent 0      -180.0    -180.0     188.5
libamp  0      -180.0    -180.0     149.4
libcent 1      -180.0    -180.0     216.7
libamp  1      -180.0    -180.0     124.6
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       349.4     348.3     350.4
kozaiamp          3.1       2.0       3.6