Orbit Fit and Astrometric record for 16TY94

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: 16TY94    
# Created Tue Dec  7 02:14:07 2021
# Orbit generated from Bernstein formalism
# Fitting     51 observations of     52
# Arc:   4.17y
# First observation: 2014/09/30
#  Last observation: 2018/12/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000449   0.031906  -0.000143   0.000646   0.027902   0.000000
# Chi-squared of fit:    13.85 DOF:     96 RMS:  0.09
# Min/Max residuals:    -0.27    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.792196E-05  3.203217E-02  1.490363E-07  6.279911E-04  2.775324E-02 -5.748272E-04
# Covariance matrix:
  2.1392E-13 -7.7707E-15 -3.8174E-14  7.2261E-15  1.6826E-13  2.3048E-13
 -7.7707E-15  1.4351E-13 -1.4808E-14  9.5513E-15  6.6889E-14  1.4191E-12
 -3.8174E-14 -1.4808E-14  7.2205E-14 -2.3957E-14 -4.6790E-14 -1.8214E-13
  7.2261E-15  9.5513E-15 -2.3957E-14  1.5035E-14  1.1587E-14  1.0808E-13
  1.6826E-13  6.6889E-14 -4.6790E-14  1.1587E-14  2.0689E-13  8.2048E-13
  2.3048E-13  1.4191E-12 -1.8214E-13  1.0808E-13  8.2048E-13  1.5601E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -26.321473   21.346457    0.253541   -0.430536   -0.870670  2456930.751218
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          355.50764 +/-     0.021
Argument of Peri:      279.52099 +/-     0.036
Long of Asc Node:      108.82714 +/-     0.001
Inclination:            25.66827 +/-     0.000
Eccentricity:         0.24548166 +/-    0.0001
Semi-Major Axis:     48.82536506 +/-    0.0044
Time of Perihelion: 2458485.5308 +/-       7.2
Perihelion:          36.83963320 +/-    0.0044
Aphelion:            60.81109691 +/-    0.0062
Period (y)              341.1744 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.07472071 +/-    0.0005
Ecliptic Y           11.87530888 +/-    0.0002
Ecliptic Z          -15.97680267 +/-    0.0003
Ecliptic XDOT        -0.00117662 +/-    0.0000
Ecliptic YDOT         0.00293005 +/-    0.0000
Ecliptic ZDOT         0.00008078 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.90419287 +/-    0.0004
Geocenter to KBO     36.03183357 +/-    0.0006
# Hcoef:  7.00

The following table shows the complete astrometric record for 16TY94. 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 (16TY94) followed by the observatory code and reference code for the source of the astrometry.

2014 09  30.25044  01 58 42.313  -16 05 00.34  23.7g 16TY94    W84  C~4ycG      
2014 09  30.25044  01 58 42.31   -16 05 00.3   23.6g 16TY94    W84  C~3cyn      
2014 09  30.25181  01 58 42.306  -16 05 00.44  22.8r 16TY94    W84  C~4ycG      
2014 09  30.25181  01 58 42.31   -16 05 00.4   22.8r 16TY94    W84  C~3cyn      
2014 12  06.19149  01 53 18.390  -16 20 04.66  22.1z 16TY94    W84  C~4ycG      
2014 12  06.19149  01 53 18.39   -16 20 04.6   22.2z 16TY94    W84  C~3cyn      
2014 12  06.19373  01 53 18.383  -16 20 04.62  21.9z 16TY94    W84  C~4ycG      
2014 12  06.19373  01 53 18.38   -16 20 04.6   22.2z 16TY94    W84  C~3cyn      
2014 12  22.080648 01 52 33.54   -16 13 36.5   23.6g 16TY94    W84  C~352u      
2014 12  22.08118  01 52 33.559  -16 13 36.61  23.8g 16TY94    W84  C~4ycG      
2014 12  22.08258  01 52 33.552  -16 13 36.62  22.7r 16TY94    W84  C~4ycG      
2014 12  22.08258  01 52 33.55   -16 13 36.6   22.7r 16TY94    W84  C~3cyn      
2014 12  23.07825  01 52 31.530  -16 13 04.77  22.4i 16TY94    W84  C~4ycG      
2014 12  23.07825  01 52 31.53   -16 13 04.8   22.5i 16TY94    W84  C~3cyn      
2014 12  23.07962  01 52 31.525  -16 13 04.85  22.9r 16TY94    W84  C~4ycG      
2014 12  23.07962  01 52 31.53   -16 13 04.8   22.9r 16TY94    W84  C~3cyn      
2014 12  23.08099  01 52 31.519  -16 13 04.89  23.8g 16TY94    W84  C~4ycG      
2014 12  23.08099  01 52 31.52   -16 13 04.9   23.8g 16TY94    W84  C~3cyn      
2014 12  23.08435  01 52 31.518  -16 13 04.76  23.5g 16TY94    W84  C~4ycG      
2014 12  23.08435  01 52 31.52   -16 13 04.8   23.6g 16TY94    W84  C~3cyn      
2014 12  24.14669  01 52 29.464  -16 12 29.85  22.5r 16TY94    W84  C~4ycG      
2014 12  24.14669  01 52 29.46   -16 12 29.8   22.6r 16TY94    W84  C~3cyn      
2015 01  12.09103  01 52 12.705  -15 59 45.30  22.2i 16TY94    W84  C~4ycG      
2015 01  12.09103  01 52 12.71   -15 59 45.3   22.5i 16TY94    W84  C~3cyn      
2015 01  14.07247  01 52 13.187  -15 58 11.37  22.6i 16TY94    W84  C~4ycG      
2015 01  14.07247  01 52 13.19   -15 58 11.4   22.6i 16TY94    W84  C~3cyn      
2015 11  20.11079  02 01 22.709  -15 38 32.87  22.4z 16TY94    W84  C~4ycG      
2015 11  20.11079  02 01 22.71   -15 38 32.9   22.6z 16TY94    W84  C~3cyn      
2016 10  08.22293  02 11 54.991  -14 39 56.15  22.9r 16TY94    807  C~2AEF      
2016 10  09.27846  02 11 49.748  -14 40 32.68        16TY94    807  C~2AEF      
2016 10  21.32019  02 10 47.894  -14 46 42.01  22.4z 16TY94    W84  C~4ycG      
2016 11  19.23226  02 08 18.264  -14 53 36.80  22.0z 16TY94    W84  C~4ycG      
2016 12  07.18676  02 07 01.334  -14 51 24.95  22.1z 16TY94    W84  C~4ycG      
2016 12  07.18676  02 07 01.33   -14 51 25.0   22.2z 16TY94    W84  C~3cyn      
2016 12  07.18813  02 07 01.324  -14 51 25.08  22.0Y 16TY94    W84  C~4ycG      
2017 10  13.313634 02 18 23.78   -13 56 21.2   22.0z 16TY94    W84  C~352u      
2017 10  13.31416  02 18 23.772  -13 56 21.43  21.6z 16TY94    W84  C~4ycG      
2017 11  01.215972 02 16 44.76   -14 04 33.5   22.0z 16TY94    W84  C~352u      
2017 11  01.21650  02 16 44.777  -14 04 33.46  21.7z 16TY94    W84  C~4ycG      
2017 11  27.083947 02 14 34.99   -14 07 41.1   22.3i 16TY94    W84  C~352u      
2017 11  27.08448  02 14 34.994  -14 07 41.16  22.2i 16TY94    W84  C~4ycG      
2017 12  08.129502 02 13 49.19   -14 05 50.2   22.8r 16TY94    W84  C~352u      
2017 12  08.13002  02 13 49.189  -14 05 50.24  22.7r 16TY94    W84  C~4ycG      
2017 12  09.125486 02 13 45.47   -14 05 34.9   24.0g 16TY94    W84  C~352u      
2017 12  09.12601  02 13 45.480  -14 05 34.80  23.7g 16TY94    W84  C~4ycG      
2017 12  14.075359 02 13 28.17   -14 04 03.2   22.5i 16TY94    W84  C~352u      
2017 12  14.07589  02 13 28.175  -14 04 03.31  22.4i 16TY94    W84  C~4ycG      
2017 12  23.137581 02 13 01.91   -14 00 18.6   23.6g 16TY94    W84  C~352u      
2017 12  23.13811  02 13 01.909  -14 00 18.69  23.5g 16TY94    W84  C~4ycG      
2018 09  21.32878  02 26 52.754  -12 55 04.50  22.6z 16TY94    W84  C~4ycG      
2018 10  21.20338  02 24 35.217  -13 13 11.22  22.3z 16TY94    W84  C~4ycG      
2018 12  02.13694  02 21 03.046  -13 20 47.35  23.1g 16TY94    W84  C~4ycG      

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     0.07       0.00     0.04
     2   0.0000     -0.02     0.04       0.05     0.10
     3   0.0000     -0.13     0.04      -0.05     0.00
     4   0.0000     -0.06     0.11      -0.04     0.02
     5   0.1833  -4657.56    -0.03     949.51    -0.08
     6   0.1833  -4657.54    -0.01     949.57    -0.02
     7   0.1833  -4657.64    -0.02     949.59    -0.08
     8   0.1833  -4657.67    -0.05     949.62    -0.05
     9   0.2268  -5108.29    -0.17    1553.73     0.27
    10   0.2268  -5108.08     0.05    1553.52     0.04
    11   0.2268  -5108.19    -0.04    1553.58     0.04
    12   0.2268  -5108.18    -0.02    1553.55     0.01
    13   0.2295  -5123.09     0.03    1594.05     0.07
    14   0.2295  -5123.08     0.05    1594.08     0.09
    15   0.2295  -5123.18    -0.03    1594.03    -0.01
    16   0.2295  -5123.09     0.06    1594.05     0.01
    17   0.2295  -5123.26    -0.09    1594.01    -0.08
    18   0.2295  -5123.27    -0.10    1594.02    -0.07
    19   0.2295  -5123.23    -0.01    1594.10    -0.13
    20   0.2295  -5123.24    -0.02    1594.15    -0.08
    21   0.2324  -5137.45    -0.00    1637.75     0.08
    22   0.2324  -5137.42     0.03    1637.68     0.01
    23   0.2843  -5071.59     0.06    2437.06     0.00
    24   0.2843  -5071.66    -0.00    2437.08     0.03
    25   0.2897  -5029.64     0.07    2521.39    -0.10
    26   0.2897  -5029.67     0.04    2521.43    -0.05
    27   1.1386   2748.54    -0.02     567.97    -0.10
    28   1.1386   2748.53    -0.02     568.00    -0.07
    29   2.0232  12563.16     0.04     191.87     0.30
    30   2.0261  12478.51 (  -0.12)    188.77 (   0.61)
    31   2.0591  11505.06     0.10     208.18    -0.16
    32   2.1382   9343.66    -0.12     689.77    -0.05
    33   2.1874   8369.45    -0.02    1252.04    -0.02
    34   2.1874   8369.52     0.06    1252.07     0.00
    35   2.1874   8369.34    -0.07    1252.00    -0.11
    36   3.0364  18825.31    -0.07     309.24     0.14
    37   3.0365  18825.10    -0.23     309.08    -0.03
    38   3.0882  17296.68    -0.18     443.54     0.03
    39   3.0882  17296.92     0.10     443.48    -0.04
    40   3.1590  15482.14    -0.10    1034.86     0.11
    41   3.1590  15482.17    -0.04    1034.78     0.02
    42   3.1893  14913.58     0.09    1405.00     0.08
    43   3.1893  14913.55     0.09    1404.97     0.03
    44   3.1920  14869.93    -0.12    1440.82    -0.19
    45   3.1920  14870.10     0.08    1440.85    -0.17
    46   3.2055  14675.20     0.09    1626.22     0.14
    47   3.2055  14675.22     0.13    1626.09    -0.01
    48   3.2304  14413.91     0.05    1985.97     0.15
    49   3.2304  14413.86     0.02    1985.90     0.06
    50   3.9756  27209.92     0.03     621.24     0.05
    51   4.0574  24894.50    -0.00     459.42     0.06
    52   4.1722  21843.91     0.05    1318.34    -0.27

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.

16TY94    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        49.365    49.378    49.352
ecceobj         0.253     0.254     0.253
incobj         25.673    25.673    25.672
qmin           36.321    36.300    36.292
qmax           62.126    62.145    62.010
amean          48.926    48.922    48.903
amin           48.480    48.468    48.468
amax           49.458    49.446    49.429
emean           0.239     0.239     0.239
emin            0.223     0.224     0.222
emax            0.256     0.257     0.256
imean          24.291    24.268    24.288
imin           23.737    23.719    23.750
imax           24.714    24.713    24.728
excite_mean     0.476     0.476     0.476
fracstop        1.000     1.000     1.000
cjmean          2.872     2.872     2.872

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       187.5     187.2     186.0
kozaiamp        180.0     179.9     180.0