Orbit Fit and Astrometric record for 13HG162

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: 13HG162   
# Created Tue Dec  7 02:11:43 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     56 observations of     56
# Arc:   5.19y
# First observation: 2012/02/24
#  Last observation: 2017/05/03
# Chi-squared of fit:   167.30 DOF:    106 RMS:  0.31
# Min/Max residuals:    -1.91    0.76
# Exact a, adot, b, bdot, g, gdot:
  2.152767E-05  2.560929E-01  5.404761E-05  6.475874E-01  1.924036E-01 -4.499937E-03
# Covariance matrix:
  5.7056E-13 -2.4807E-13  3.3241E-14 -1.0946E-13  1.3541E-13 -3.3114E-14
 -2.4807E-13  6.0897E-13 -2.1905E-13  7.8536E-13  4.2277E-13  3.3326E-13
  3.3241E-14 -2.1905E-13  7.1549E-13 -9.3550E-13 -9.6261E-14 -2.6028E-13
 -1.0946E-13  7.8536E-13 -9.3550E-13  2.5100E-12  3.7058E-13  9.1808E-13
  1.3541E-13  4.2277E-13 -9.6261E-14  3.7058E-13  7.0839E-13  1.9217E-13
 -3.3114E-14  3.3326E-13 -2.6028E-13  9.1808E-13  1.9217E-13  3.6886E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -48.984186 -138.519510    0.909036   -0.298940   -0.260056  2455981.766584
# Heliocentric elements and errors
Epoch:              2455981.5000  =  2012/02/24
Mean Anomaly:          359.89709 +/-     0.010
Argument of Peri:      312.54188 +/-     0.000
Long of Asc Node:      231.32795 +/-     0.000
Inclination:            68.49205 +/-     0.000
Eccentricity:         0.83734144 +/-    0.0001
Semi-Major Axis:     34.03838325 +/-    0.0000
Time of Perihelion: 2456002.2356 +/-       2.0
Perihelion:           5.53663433 +/-    0.0020
Aphelion:            62.54013216 +/-    0.0020
Period (y)              198.5919 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -3.45141920 +/-    0.0000
Ecliptic Y           -1.83931950 +/-    0.0000
Ecliptic Z           -3.92143831 +/-    0.0000
Ecliptic XDOT        -0.00276851 +/-    0.0000
Ecliptic YDOT        -0.00730353 +/-    0.0000
Ecliptic ZDOT         0.00609591 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    5.53833213 +/-    0.0000
Geocenter to KBO      5.19743700 +/-    0.0000
# Hcoef: 12.41

The following table shows the complete astrometric record for 13HG162. 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 (13HG162) followed by the observatory code and reference code for the source of the astrometry.

2012 02  24.265818 12 45 23.85   -59 54 09.9         13HG162   309  C~46rI      
2012 02  24.274301 12 45 23.66   -59 54 10.1         13HG162   309  C~46rI      
2013 04  03.55682  15 11 39.47   -29 34 52.9   20.2i 13HG162   F51  C~46rI      
2013 04  03.56838  15 11 39.18   -29 34 48.8   20.2i 13HG162   F51  C~46rI      
2013 04  16.48842  15 05 50.192  -28 14 18.18  20.4w 13HG162   F51  C~441A      
2013 04  16.50456  15 05 49.714  -28 14 11.76  20.2w 13HG162   F51  C~441A      
2013 05  05.40987  14 55 57.905  -25 56 00.88  20.1w 13HG162   F51  C~441A      
2013 05  05.42465  14 55 57.418  -25 55 53.92  20.2w 13HG162   F51  C~441A      
2013 05  05.43944  14 55 56.933  -25 55 46.99  20.1w 13HG162   F51  C~441A      
2013 05  09.104907 14 54 00.58   -25 27 02.0         13HG162   W84  C~46rI      
2013 05  09.110112 14 54 00.40   -25 26 59.5         13HG162   W84  C~46rI      
2013 05  10.247477 14 53 24.50   -25 17 59.8         13HG162   W84  C~46rI      
2013 05  10.255579 14 53 24.25   -25 17 56.1         13HG162   W84  C~46rI      
2013 05  18.39364  14 49 15.66   -24 12 56.2   20.1i 13HG162   F51  C~46rI      
2013 05  20.35925  14 48 18.25   -23 57 09.3   20.0i 13HG162   F51  C~46rI      
2013 05  20.38092  14 48 17.61   -23 56 58.9   20.4r 13HG162   F51  C~46rI      
2013 06  04.35510  14 41 49.71   -21 58 29.0   20.6r 13HG162   F51  C~46rI      
2013 06  04.36866  14 41 49.40   -21 58 22.7   20.4r 13HG162   F51  C~46rI      
2013 07  09.26897  14 34 41.85   -18 04 14.1   20.5z 13HG162   F51  C~46rI      
2013 07  13.24795  14 34 40.87   -17 43 01.9   20.4y 13HG162   F51  C~46rI      
2013 07  13.28005  14 34 40.89   -17 42 51.7   20.5z 13HG162   F51  C~46rI      
2013 08  08.273632 14 38 21.86   -15 53 45.8         13HG162   568  O~46rI      
2013 08  08.277538 14 38 21.92   -15 53 45.0         13HG162   568  O~46rI      
2014 04  22.58966  16 11 05.12   -03 28 57.3   20.6i 13HG162   F51  C~46rI      
2014 04  22.59722  16 11 04.95   -03 28 54.5         13HG162   F51  C~46rI      
2014 04  24.39633  16 10 26.12   -03 18 17.4         13HG162   691  C~441A      
2014 04  24.41401  16 10 25.71   -03 18 12.0         13HG162   691  C~441A      
2014 04  24.43169  16 10 25.29   -03 18 05.3         13HG162   691  C~441A      
2014 04  28.38346  16 08 56.32   -02 55 02.4         13HG162   691  C~441A      
2014 04  28.40114  16 08 55.86   -02 54 53.8         13HG162   691  C~441A      
2014 04  28.42099  16 08 55.40   -02 54 47.3         13HG162   691  C~441A      
2014 05  02.37440  16 07 21.96   -02 32 07.0   21.2V 13HG162   691  C~441A      
2014 05  02.39206  16 07 21.54   -02 32 01.1   21.1V 13HG162   691  C~441A      
2014 05  02.40972  16 07 21.10   -02 31 54.9   21.5V 13HG162   691  C~441A      
2014 05  06.37556  16 05 43.73   -02 09 41.1         13HG162   691  C~441A      
2014 05  06.39326  16 05 43.26   -02 09 35.6         13HG162   691  C~441A      
2014 05  06.41095  16 05 42.81   -02 09 29.8         13HG162   691  C~441A      
2014 05  17.258380 16 01 04.72   -01 11 59.8   21.4V 13HG162   W84  C~46rI      
2014 05  17.263877 16 01 04.58   -01 11 58.1   21.3V 13HG162   W84  C~46rI      
2014 05  18.187685 16 00 40.50   -01 07 20.1         13HG162   W84  C~46rI      
2014 05  20.43626  15 59 41.75   -00 56 15.7   21.2r 13HG162   F51  C~46rI      
2014 05  20.44849  15 59 41.42   -00 56 12.2   21.1r 13HG162   F51  C~46rI      
2014 05  20.46058  15 59 41.12   -00 56 08.3   21.5r 13HG162   F51  C~46rI      
2014 05  20.47252  15 59 40.77   -00 56 05.3   21.1r 13HG162   F51  C~46rI      
2014 06  15.38393  15 49 02.87   +00 49 01.0   20.7i 13HG162   F51  C~46rI      
2014 06  15.39658  15 49 02.55   +00 49 04.1         13HG162   F51  C~46rI      
2014 06  15.43291  15 49 01.79   +00 49 10.5         13HG162   F51  C~46rI      
2014 06  22.16166  15 46 42.82   +01 08 57.9   20.8V 13HG162   G96  C~441A      
2014 06  22.16989  15 46 42.70   +01 08 59.3   21.0V 13HG162   G96  C~441A      
2014 06  22.17810  15 46 42.49   +01 09 01.0   21.9V 13HG162   G96  C~441A      
2014 06  22.18632  15 46 42.35   +01 09 02.8   21.9V 13HG162   G96  C~441A      
2014 07  01.37141  15 43 59.802  +01 30 58.84  21.5w 13HG162   F51  C~441A      
2014 07  01.38343  15 43 59.613  +01 31 00.38  21.5w 13HG162   F51  C~441A      
2014 07  01.39543  15 43 59.418  +01 31 01.87  21.6w 13HG162   F51  C~441A      
2014 07  01.40745  15 43 59.214  +01 31 03.27  21.6w 13HG162   F51  C~441A      
2017 05  03.394022 17 41 11.45   +28 51 22.2   23.7g 13HG162   W84  C~46rI      

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    -0.36       0.00    -0.08
     2   0.0000      0.00    -0.24       0.00    -0.09
     3   1.1069      0.00    -0.05       0.00     0.02
     4   1.1069      0.00    -0.11       0.00     0.15
     5   1.1423      0.00     0.01       0.00     0.02
     6   1.1423      0.00     0.17       0.00    -0.08
     7   1.1941      0.00     0.15       0.00    -0.02
     8   1.1941      0.00     0.08       0.00     0.06
     9   1.1942      0.00     0.05       0.00     0.09
    10   1.2042      0.00     0.24       0.00    -0.14
    11   1.2042      0.00     0.05       0.00    -0.09
    12   1.2073      0.00     0.03       0.00     0.01
    13   1.2074      0.00     0.17       0.00    -0.16
    14   1.2296      0.00     0.30       0.00     0.01
    15   1.2350      0.00    -0.04       0.00     0.03
    16   1.2351      0.00    -0.02       0.00    -0.00
    17   1.2761      0.00    -0.05       0.00     0.02
    18   1.2761      0.00     0.01       0.00     0.04
    19   1.3717      0.00     0.04       0.00     0.00
    20   1.3826      0.00     0.01       0.00    -0.10
    21   1.3827      0.00     0.13       0.00     0.12
    22   1.4538      0.00     0.06       0.00     0.26
    23   1.4538      0.00     0.08       0.00     0.29
    24   2.1583      0.00     0.01       0.00    -0.12
    25   2.1583      0.00    -0.08       0.00    -0.01
    26   2.1633      0.00    -0.13       0.00     0.25
    27   2.1633      0.00    -0.34       0.00    -0.59
    28   2.1634      0.00    -0.71       0.00    -0.13
    29   2.1742      0.00    -0.06       0.00    -1.91
    30   2.1742      0.00    -0.71       0.00     0.55
    31   2.1743      0.00    -0.58       0.00     0.15
    32   2.1851      0.00    -0.30       0.00     0.17
    33   2.1852      0.00    -0.08       0.00     0.05
    34   2.1852      0.00    -0.16       0.00     0.24
    35   2.1961      0.00    -0.11       0.00     0.32
    36   2.1961      0.00    -0.42       0.00    -0.05
    37   2.1962      0.00    -0.42       0.00    -0.13
    38   2.2259      0.00     0.07       0.00    -0.08
    39   2.2259      0.00     0.16       0.00    -0.04
    40   2.2284      0.00     0.09       0.00    -0.11
    41   2.2346      0.00     0.27       0.00     0.02
    42   2.2346      0.00     0.21       0.00    -0.05
    43   2.2346      0.00     0.54       0.00     0.32
    44   2.2347      0.00     0.06       0.00    -0.17
    45   2.3056      0.00     0.16       0.00     0.08
    46   2.3056      0.00    -0.41       0.00     0.76
    47   2.3057      0.00     0.31       0.00     0.23
    48   2.3242      0.00    -0.06       0.00    -0.39
    49   2.3242      0.00     0.60       0.00    -0.33
    50   2.3242      0.00    -0.10       0.00     0.04
    51   2.3242      0.00     0.26       0.00     0.50
    52   2.3494      0.00     0.18       0.00    -0.04
    53   2.3494      0.00     0.28       0.00     0.00
    54   2.3494      0.00     0.27       0.00     0.00
    55   2.3495      0.00     0.14       0.00    -0.09
    56   5.1886      0.00     0.53       0.00     0.17

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.

13HG162    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        33.907    33.906    33.908
ecceobj         0.836     0.836     0.836
incobj         68.295    68.295    68.295
qmin            5.383     5.483     5.355
qmax           67.906    62.251    62.254
amean          34.647    30.373    32.146
amin           31.997    28.763    30.715
amax           36.672    33.906    33.908
emean           0.841     0.817     0.830
emin            0.827     0.807     0.820
emax            0.852     0.836     0.836
imean          69.190    69.700    69.452
imin           68.754    69.177    69.159
imax           69.599    70.064    69.730
excite_mean     1.258     1.244     1.251
fracstop        0.001     0.001     0.002
cjmean          1.293     1.406     1.353

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       310.5     311.2     310.1
kozaiamp          2.2       1.3       2.3