Orbit Fit and Astrometric record for 14XR40

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: 14XR40    
# Created Tue Oct 24 01:38:31 2017
# Orbit generated from Bernstein formalism
# Fitting   43 observations of   43
# Arc:   3.88y
# First observation: 2011/04/02
#  Last observation: 2015/02/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000312   0.019002   0.000107  -0.008344   0.022221   0.000000
# Chi-squared of fit:    21.59 DOF:   80 RMS:  0.13
# Min/Max residuals:    -0.29    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.305064E-05  1.870703E-02 -5.581498E-06 -8.276627E-03  2.264316E-02 -2.950795E-03
# Covariance matrix:
  3.7830E-13 -2.7076E-13 -5.8122E-14  8.3415E-14 -1.4654E-13 -2.2141E-12
 -2.7076E-13  2.8997E-13  7.6112E-14 -1.0908E-13  1.9880E-13  2.8965E-12
 -5.8122E-14  7.6112E-14  2.4292E-13 -9.8105E-14  8.1456E-14  8.9384E-13
  8.3415E-14 -1.0908E-13 -9.8105E-14  7.0014E-14 -1.1132E-13 -1.2658E-12
 -1.4654E-13  1.9880E-13  8.1456E-14 -1.1132E-13  4.5068E-13  2.9999E-12
 -2.2141E-12  2.8965E-12  8.9384E-13 -1.2658E-12  2.9999E-12  3.3736E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.050489  167.419190   -0.417293    0.111984   -0.905635  2455653.803576
# Heliocentric elements and errors
Epoch:              2455650.5000  =  2011/03/30
Mean Anomaly:          255.79994 +/-     0.079
Argument of Peri:      282.58533 +/-     0.064
Long of Asc Node:        3.08584 +/-     0.000
Inclination:            24.89657 +/-     0.000
Eccentricity:         0.14252083 +/-    0.0002
Semi-Major Axis:     42.80442665 +/-    0.0058
Time of Perihelion: 2485257.6715 +/-      21.7
Perihelion:          36.70390416 +/-    0.0109
Aphelion:            48.90494914 +/-    0.0118
Period (y)              280.0536 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.75474648 +/-    0.0013
Ecliptic Y            9.33755982 +/-    0.0003
Ecliptic Z            5.42055946 +/-    0.0002
Ecliptic XDOT        -0.00026862 +/-    0.0000
Ecliptic YDOT        -0.00225200 +/-    0.0000
Ecliptic ZDOT        -0.00103695 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.06717573 +/-    0.0012
Geocenter to KBO     44.16344211 +/-    0.0013
# Hcoef:  5.21

The following table shows the complete astrometric record for 14XR40. 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 (14XR40) followed by the observatory code and reference code for the source of the astrometry.

2011 04  02.30281  11 24 54.128  +11 27 18.91  21.6w 14XR40    F51  C~1vXw      
2011 04  02.33410  11 24 53.990  +11 27 19.48  21.5w 14XR40    F51  C~1vXw      
2011 04  02.34921  11 24 53.930  +11 27 19.71  21.7w 14XR40    F51  C~1vXw      
2012 03  27.32726  11 28 30.997  +10 33 54.82  21.6w 14XR40    F51  C~1vXw      
2012 03  27.34170  11 28 30.922  +10 33 55.01  21.6w 14XR40    F51  C~1vXw      
2012 03  27.35615  11 28 30.849  +10 33 55.48  21.7w 14XR40    F51  C~1vXw      
2012 03  27.37060  11 28 30.792  +10 33 55.73  21.6w 14XR40    F51  C~1vXw      
2013 02  13.54524  11 34 49.536  +09 25 06.62  22.2g 14XR40    F51  C~1vXw      
2013 02  13.55746  11 34 49.488  +09 25 07.11  21.9g 14XR40    F51  C~1vXw      
2013 02  13.56980  11 34 49.439  +09 25 07.21  21.8r 14XR40    F51  C~1vXw      
2013 02  13.58145  11 34 49.367  +09 25 07.51  21.7r 14XR40    F51  C~1vXw      
2013 06  27.27495  11 29 03.676  +09 40 14.40  22.1w 14XR40    F51  C~1vXw      
2013 06  27.28022  11 29 03.684  +09 40 14.47  21.7w 14XR40    F51  C~1vXw      
2013 06  27.28548  11 29 03.667  +09 40 14.24  21.9w 14XR40    F51  C~1vXw      
2013 06  27.29076  11 29 03.699  +09 40 13.91  21.8w 14XR40    F51  C~1vXw      
2014 03  20.47855  11 35 34.058  +08 46 14.27  21.5r 14XR40    F51  C~1vXw      
2014 03  20.48988  11 35 33.994  +08 46 14.44  21.6r 14XR40    F51  C~1vXw      
2014 03  20.50153  11 35 33.946  +08 46 14.82  21.5r 14XR40    F51  C~1vXw      
2014 03  20.51331  11 35 33.896  +08 46 15.01  21.4r 14XR40    F51  C~1vXw      
2014 12  02.64010  11 42 51.665  +07 27 23.78  21.8w 14XR40    F51  C~1vXw      
2014 12  02.64207  11 42 51.665  +07 27 23.62  21.6w 14XR40    F51  C~1vXw      
2014 12  02.64405  11 42 51.665  +07 27 23.84  21.7w 14XR40    F51  C~1vXw      
2014 12  02.64603  11 42 51.671  +07 27 23.80  21.7w 14XR40    F51  C~1vXw      
2014 12  10.58774  11 43 03.144  +07 26 29.94  21.4i 14XR40    F51  C~1vXw      
2014 12  10.60093  11 43 03.153  +07 26 30.08  21.2i 14XR40    F51  C~1vXw      
2014 12  10.61517  11 43 03.168  +07 26 29.88  21.6i 14XR40    F51  C~1vXw      
2014 12  10.62839  11 43 03.178  +07 26 29.78  21.3i 14XR40    F51  C~1vXw      
2015 01  19.52938  11 42 39.048  +07 30 36.37  21.9w 14XR40    F51  C~1vXw      
2015 01  19.54288  11 42 39.015  +07 30 36.39  21.7w 14XR40    F51  C~1vXw      
2015 01  19.55643  11 42 38.983  +07 30 36.74  21.7w 14XR40    F51  C~1vXw      
2015 01  19.57002  11 42 38.954  +07 30 36.73  21.6w 14XR40    F51  C~1vXw      
2015 01  21.56359  11 42 34.315  +07 31 09.20  21.7w 14XR40    F51  C~1vXw      
2015 01  21.57511  11 42 34.278  +07 31 09.36  21.6w 14XR40    F51  C~1vXw      
2015 01  21.58674  11 42 34.254  +07 31 09.68  21.7w 14XR40    F51  C~1vXw      
2015 01  21.60103  11 42 34.227  +07 31 09.90  21.6w 14XR40    F51  C~1vXw      
2015 02  15.47301  11 41 14.467  +07 39 39.46  21.8w 14XR40    F51  C~1vXw      
2015 02  15.48627  11 41 14.395  +07 39 39.99  21.7w 14XR40    F51  C~1vXw      
2015 02  15.49954  11 41 14.337  +07 39 40.20  21.9w 14XR40    F51  C~1vXw      
2015 02  15.51285  11 41 14.297  +07 39 40.53  21.8w 14XR40    F51  C~1vXw      
2015 02  16.45795  11 41 10.614  +07 40 02.83  21.6w 14XR40    F51  C~1vXw      
2015 02  16.47087  11 41 10.563  +07 40 03.18  21.6w 14XR40    F51  C~1vXw      
2015 02  16.48375  11 41 10.510  +07 40 03.49  21.6w 14XR40    F51  C~1vXw      
2015 02  16.49669  11 41 10.453  +07 40 03.86  21.6w 14XR40    F51  C~1vXw      

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     0.00       0.00    -0.04
  2   0.0001     -2.09    -0.08      -0.28    -0.04
  3   0.0001     -2.99    -0.01      -0.42    -0.04
  4   0.9857   4204.35     0.16   -1671.00     0.07
  5   0.9857   4203.26     0.05   -1671.26    -0.08
  6   0.9858   4202.08    -0.15   -1671.26     0.04
  7   0.9858   4201.21    -0.04   -1671.37     0.05
  8   1.8706  10993.22     0.22   -3212.27     0.03
  9   1.8706  10992.36     0.15   -3212.10     0.22
 10   1.8707  10991.66     0.24   -3212.30     0.04
 11   1.8707  10990.56    -0.12   -3212.46    -0.10
 12   2.2367   5933.63     0.11   -4433.18    -0.11
 13   2.2368   5933.71     0.02   -4433.07     0.07
 14   2.2368   5933.57    -0.29   -4433.38    -0.18
 15   2.2368   5934.14     0.11   -4433.49    -0.23
 16   2.9656  12544.04    -0.06   -5085.00     0.22
 17   2.9656  12543.10    -0.20   -5085.23     0.07
 18   2.9656  12542.29    -0.18   -5085.17     0.21
 19   2.9657  12541.53    -0.10   -5085.29     0.16
 20   3.6696  20459.33     0.01   -6787.37     0.03
 21   3.6696  20459.40     0.02   -6787.52    -0.12
 22   3.6697  20459.31    -0.13   -6787.32     0.08
 23   3.6697  20459.40    -0.08   -6787.32     0.07
 24   3.6914  20639.00    -0.05   -6767.04    -0.04
 25   3.6914  20639.07    -0.20   -6766.86     0.11
 26   3.6915  20639.35    -0.14   -6766.95    -0.01
 27   3.6915  20639.53    -0.17   -6766.98    -0.07
 28   3.8008  20206.73    -0.07   -6687.07     0.05
 29   3.8008  20206.27    -0.01   -6687.26    -0.14
 30   3.8008  20205.69    -0.08   -6687.13    -0.02
 31   3.8009  20205.29     0.05   -6687.31    -0.21
 32   3.8063  20128.29    -0.00   -6685.67    -0.03
 33   3.8064  20127.72    -0.10   -6685.75    -0.11
 34   3.8064  20127.26    -0.09   -6685.60     0.04
 35   3.8064  20126.80     0.03   -6685.56     0.07
 36   3.8745  18824.00     0.33   -6701.42    -0.13
 37   3.8746  18822.80    -0.03   -6701.37    -0.05
 38   3.8746  18821.92    -0.06   -6701.53    -0.17
 39   3.8746  18821.23     0.11   -6701.47    -0.08
 40   3.8772  18761.63     0.24   -6703.30     0.05
 41   3.8773  18760.79     0.23   -6703.29     0.10
 42   3.8773  18759.93     0.21   -6703.32     0.09
 43   3.8773  18759.00     0.11   -6703.33     0.12

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.

14XR40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.824    42.840    42.808
ecceobj         0.141     0.142     0.141
incobj         24.905    24.905    24.905
qmin           36.317    36.377    36.385
qmax           49.977    49.984    49.890
amean          42.998    43.012    42.982
amin           42.658    42.668    42.625
amax           43.378    43.398    43.365
emean           0.136     0.136     0.135
emin            0.121     0.121     0.120
emax            0.152     0.152     0.151
imean          25.195    25.199    25.196
imin           24.799    24.804    24.804
imax           25.608    25.637    25.627
excite_mean     0.447     0.447     0.447
fracstop        1.000     1.000     1.000
cjmean          2.842     2.842     2.842

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       187.9     187.2     187.1
kozaiamp        180.0     180.0     179.9