Orbit Fit and Astrometric record for 14PR70

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: 14PR70    
# Created Mon Oct 23 01:38:27 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   6.06y
# First observation: 2011/08/29
#  Last observation: 2017/09/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.084598   0.175138  -0.012239   0.023987   0.055473   0.000000
# WARNING -- MRQMIN stopped after  17 iterations
# WARNING Fitting with energy constraint
# WARNING -- MRQMIN stopped after  17 iterations
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# Chi-squared of fit:  9999.99 DOF:   45 RMS: 99.99
# Min/Max residuals:   -43.49 4628.31
# Exact a, adot, b, bdot, g, gdot:
 -1.611597E-04  1.075613E-01  2.136000E-04  1.423632E-02  6.549866E-02 -4.346389E-02
# Covariance matrix:
  3.2592E-13 -1.4373E-13  2.0273E-14 -1.3789E-14 -8.3240E-14 -8.0149E-14
 -1.4373E-13  8.3455E-14 -1.3876E-14  9.4397E-15  5.8682E-14  5.4830E-14
  2.0273E-14 -1.3876E-14  1.7238E-13 -3.8353E-14 -5.6538E-15 -1.0946E-14
 -1.3789E-14  9.4397E-15 -3.8353E-14  1.1124E-14  4.0885E-15  7.4194E-15
 -8.3240E-14  5.8682E-14 -5.6538E-15  4.0885E-15  2.7278E-13  1.8316E-14
 -8.0149E-14  5.4830E-14 -1.0946E-14  7.4194E-15  1.8316E-14  4.3706E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.109664  -23.275561    0.022006   -0.001966   -1.006732  2455802.938676
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          331.98905 +/-     0.002
Argument of Peri:       73.15571 +/-     0.003
Long of Asc Node:      337.33475 +/-     0.000
Inclination:             7.54596 +/-     0.000
Eccentricity:         0.47485856 +/-    0.0000
Semi-Major Axis:     23.79213650 +/-    0.0012
Time of Perihelion: 2459098.6773 +/-       0.1
Perihelion:          12.49423691 +/-    0.0007
Aphelion:            35.09003608 +/-    0.0018
Period (y)              116.0535 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           14.94375949 +/-    0.0001
Ecliptic Y           -6.45258430 +/-    0.0000
Ecliptic Z           -0.02592927 +/-    0.0000
Ecliptic XDOT         0.00010561 +/-    0.0000
Ecliptic YDOT         0.00485303 +/-    0.0000
Ecliptic ZDOT         0.00059862 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   16.27736047 +/-    0.0001
Geocenter to KBO     15.26748845 +/-    0.0001
# Hcoef: 10.74

The following table shows the complete astrometric record for 14PR70. 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 (14PR70) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.43791  22 34 00.868  -09 08 43.12  22.7w 14PR70    F51  C~1vXh      
2011 08  29.45208  22 34 00.730  -09 08 43.94  22.3w 14PR70    F51  C~1vXh      
2011 08  29.46619  22 34 00.582  -09 08 44.49  22.6w 14PR70    F51  C~1vXh      
2011 08  29.48026  22 34 00.439  -09 08 45.14  22.6w 14PR70    F51  C~1vXh      
2013 09  03.42463  23 21 31.190  -02 15 33.41  22.3w 14PR70    F51  C~1vXh      
2013 09  03.43953  23 21 31.038  -02 15 34.20  22.4w 14PR70    F51  C~1vXh      
2013 09  03.45442  23 21 30.882  -02 15 34.87  22.0w 14PR70    F51  C~1vXh      
2013 09  03.46931  23 21 30.729  -02 15 35.56  22.1w 14PR70    F51  C~1vXh      
2014 08  06.52286  23 52 23.984  +02 01 29.56  22.4w 14PR70    F51  C~1vXh      
2014 08  06.53447  23 52 23.918  +02 01 29.19  22.5w 14PR70    F51  C~1vXh      
2014 08  06.54612  23 52 23.836  +02 01 29.25  22.5w 14PR70    F51  C~1vXh      
2014 08  18.45445  23 51 01.491  +01 56 09.02  21.6i 14PR70    F51  C~1vXh      
2014 08  18.46611  23 51 01.388  +01 56 08.72  21.6i 14PR70    F51  C~1vXh      
2014 08  18.47778  23 51 01.310  +01 56 08.40  21.8i 14PR70    F51  C~1vXh      
2014 08  18.48945  23 51 01.184  +01 56 08.15  21.8i 14PR70    F51  C~1vXh      
2014 10  01.43669  23 43 56.201  +01 19 43.84  22.0w 14PR70    F51  C~1vXh      
2014 10  01.44820  23 43 56.098  +01 19 43.26  22.0w 14PR70    F51  C~1vXh      
2014 10  01.45972  23 43 55.978  +01 19 42.59  22.1w 14PR70    F51  C~1vXh      
2014 10  01.47128  23 43 55.860  +01 19 41.84  21.9w 14PR70    F51  C~1vXh      
2016 10  19.43844  00 41 08.240  +09 45 12.80  21.3i 14PR70    F51  C~1ztX      
2016 10  19.45007  00 41 08.119  +09 45 12.17  21.1i 14PR70    F51  C~1ztX      
2016 10  19.46169  00 41 07.982  +09 45 11.58  21.3i 14PR70    F51  C~1ztX      
2017 09  19.54016  01 19 51.098  +14 35 56.75  22.0w 14PR70    F51  C~2Kv5      
2017 09  19.55303  01 19 50.956  +14 35 55.95  21.9w 14PR70    F51  C~2Kv5      
2017 09  19.56577  01 19 50.818  +14 35 55.62  21.8w 14PR70    F51  C~2Kv5      

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    38.60       0.00   -43.35
  2   0.0000     -2.20    38.84      -0.01   -43.49
  3   0.0001     -4.44    39.03       0.29   -43.32
  4   0.0001     -6.65    39.25       0.47   -43.27
  5   2.0150  49705.77  1355.70    6817.01   178.14
  6   2.0151  49703.23  1355.99    6817.17   178.14
  7   2.0151  49700.67  1356.26    6817.46   178.27
  8   2.0151  49698.15  1356.58    6817.71   178.36
  9   2.9379  84763.20  1564.57   10574.78   311.16
 10   2.9380  84761.96  1564.80   10574.81   310.98
 11   2.9380  84760.67  1564.98   10575.38   311.34
 12   2.9706  83290.15  1797.23   10763.48   313.56
 13   2.9706  83288.36  1797.38   10763.82   313.71
 14   2.9707  83286.97  1797.92   10763.98   313.68
 15   2.9707  83284.83  1797.73   10764.51   314.02
 16   3.0910  75564.40  2788.56   11200.51   336.56
 17   3.0911  75562.53  2789.06   11200.56   336.55
 18   3.0911  75560.35  2789.27   11200.63   336.55
 19   3.0911  75558.17  2789.47   11200.61   336.46
 20   5.1417 152953.07  4627.76   22418.55   583.95
 21   5.1417 152950.13  4628.19   22418.56   584.05
 22   5.1417 152946.87  4628.31   22418.71   584.29
 23   6.0591 222750.88  2141.14   30859.03   386.95
 24   6.0592 222746.06  2141.02   30858.73   386.55
 25   6.0592 222741.75  2141.35   30859.07   386.80

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.

14PR70    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        70.854    70.851    70.856
ecceobj         0.797     0.797     0.797
incobj          7.609     7.609     7.609
qmin           14.198    14.124    14.193
qmax          135.238   135.849   133.978
amean          71.163    71.447    72.161
amin           69.276    68.867    69.470
amax           74.897    75.170    74.480
emean           0.796     0.797     0.798
emin            0.787     0.788     0.789
emax            0.806     0.807     0.806
imean           9.326     9.665     9.215
imin            8.701     8.701     8.701
imax            9.714    10.265     9.695
excite_mean     0.812     0.815     0.814
fracstop        0.010     0.013     0.007
cjmean          2.257     2.253     2.256

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        59.9      63.2      57.9
kozaiamp          7.3      10.3       5.9