Orbit Fit and Astrometric record for 01QA298

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: 01QA298   
# Created Sat Oct 21 01:37:13 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  14.14y
# First observation: 2000/07/29
#  Last observation: 2014/09/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.004820   0.028228   0.001419  -0.012264   0.014344   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:  9999.99 DOF:   33 RMS: 60.53
# Min/Max residuals:  -142.82  110.08
# Exact a, adot, b, bdot, g, gdot:
 -5.167376E-04  2.665330E-02  1.409061E-04 -1.142330E-02  2.489496E-02 -2.986791E-03
# Covariance matrix:
  5.6910E-13 -1.6636E-13 -1.1593E-13  8.1003E-14  1.0978E-12 -5.0472E-13
 -1.6636E-13  6.9603E-14  4.8703E-14 -3.3787E-14 -3.1297E-13  2.0654E-13
 -1.1593E-13  4.8703E-14  1.9714E-13 -4.0347E-14 -2.6303E-13  1.5374E-13
  8.1003E-14 -3.3787E-14 -4.0347E-14  2.0040E-14  1.8586E-13 -1.0699E-13
  1.0978E-12 -3.1297E-13 -2.6303E-13  1.8586E-13  3.7451E-12 -1.1917E-12
 -5.0472E-13  2.0654E-13  1.5374E-13 -1.0699E-13 -1.1917E-12  6.5956E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.126003  -51.323395    0.047789   -0.090786   -1.010101  2451754.708683
# Heliocentric elements and errors
Epoch:              2451750.5000  =  2000/07/25
Mean Anomaly:          352.82496 +/-     0.009
Argument of Peri:      212.78700 +/-     0.015
Long of Asc Node:      117.12648 +/-     0.000
Inclination:            23.72396 +/-     0.000
Eccentricity:         0.44051949 +/-    0.0003
Semi-Major Axis:     72.20547523 +/-    0.0489
Time of Perihelion: 2456217.0807 +/-       3.3
Perihelion:          40.39755641 +/-    0.0361
Aphelion:           104.01339406 +/-    0.0743
Period (y)              613.5690 +/-      0.62
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.58844001 +/-    0.0019
Ecliptic Y          -32.06457910 +/-    0.0024
Ecliptic Z           -3.58330180 +/-    0.0003
Ecliptic XDOT         0.00200666 +/-    0.0000
Ecliptic YDOT         0.00218043 +/-    0.0000
Ecliptic ZDOT        -0.00122177 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.17943112 +/-    0.0022
Geocenter to KBO     40.16878224 +/-    0.0031
# Hcoef:  6.64

The following table shows the complete astrometric record for 01QA298. 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 (01QA298) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.20794  20 50 14.10   -23 02 00.9   22.2R 01QA298   807  Cg3217      
2000 07  29.32121  20 50 13.48   -23 02 04.1         01QA298   807  Cg3217      
2001 08  19.11360  20 55 35.00   -23 23 34.6   21.8R 01QA298   807  Cd7926      
2001 08  19.19162  20 55 34.59   -23 23 36.1         01QA298   807  Cd7926      
2001 08  20.10093  20 55 29.95   -23 23 58.2         01QA298   807  Cd7926      
2001 08  20.17923  20 55 29.56   -23 24 00.1         01QA298   807  Cd7926      
2002 08  09.15297  21 03 41.16   -23 30 41.9   22.1R 01QA298   807  Cg3217      
2002 08  09.30253  21 03 40.38   -23 30 45.9         01QA298   807  Cg3217      
2002 08  11.17095  21 03 30.44   -23 31 37.2         01QA298   807  Cg3217      
2002 08  12.16024  21 03 25.19   -23 32 03.4         01QA298   807  Cg3217      
2002 08  12.23067  21 03 24.81   -23 32 05.3         01QA298   807  Cg3217      
2008 08  01.34020  21 48 41.15   -24 08 30.3   22.4R 01QA298   688  Cz3488      
2008 08  01.39365  21 48 40.87   -24 08 31.9         01QA298   688  Cz3488      
2010 08  13.14832  22 02 50.60   -24 18 13.5   22.1R 01QA298   807   ~0NFN      
2010 08  13.22114  22 02 50.20   -24 18 16.2         01QA298   807   ~0NFN      
2010 08  13.25304  22 02 50.01   -24 18 17.2         01QA298   807   ~0NFN      
2014 09  19.04024  22 30 07.43   -24 27 50.9   24.0V 01QA298   W84  C~2J8m      
2014 09  19.10771  22 30 07.10   -24 27 52.3         01QA298   W84  C~2J8m      
2014 09  19.20425  22 30 06.62   -24 27 54.5         01QA298   W84  C~2J8m      

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   110.08       0.00   -30.56
  2   0.0003     -9.10   109.24      -0.77   -30.62
  3   1.0566   3899.32   -27.56   -2458.85   -15.98
  4   1.0568   3893.48   -27.96   -2458.72   -15.58
  5   1.0593   3825.95   -33.45   -2462.12   -15.64
  6   1.0595   3820.26   -33.71   -2462.45   -15.71
  7   2.0286  10197.97    13.69   -4783.60    -4.68
  8   2.0290  10186.51    13.19   -4784.28    -4.66
  9   2.0341  10040.39     1.67   -4793.33    -4.40
 10   2.0368   9963.49    -4.17   -4797.27    -3.67
 11   2.0370   9957.92    -4.60   -4797.55    -3.66
 12   8.0086  45237.08   -26.83  -19494.42    67.00
 13   8.0087  45232.71   -27.14  -19494.46    67.29
 14  10.0395  56537.92   -79.22  -24786.67    70.88
 15  10.0397  56531.34   -79.96  -24786.94    70.82
 16  10.0398  56528.33   -80.42  -24786.79    71.05
 17  14.1405  79305.34  -141.73  -35794.57    29.75
 18  14.1407  79299.90  -142.09  -35793.63    29.92
 19  14.1410  79291.90  -142.82  -35792.42    29.99

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.

01QA298    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.303    46.303    46.303
ecceobj         0.191     0.191     0.191
incobj         23.656    23.656    23.656
qmin           36.744    36.746    36.742
qmax           56.096    56.098    56.093
amean          46.190    46.188    46.208
amin           45.791    45.786    45.810
amax           46.654    46.646    46.674
emean           0.186     0.184     0.186
emin            0.170     0.169     0.170
emax            0.203     0.203     0.203
imean          22.061    22.112    22.065
imin           21.623    21.631    21.622
imax           22.531    22.528    22.567
excite_mean     0.419     0.419     0.419
fracstop        1.000     1.000     1.000
cjmean          2.908     2.908     2.908

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       179.1     177.9     179.7
kozaiamp        179.9     180.0     179.9