Orbit Fit and Astrometric record for 15TN363

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: 15TN363   
# Created Tue Apr  1 01:10:35 2025
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   4.22y
# First observation: 2015/10/10
#  Last observation: 2019/12/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000049   0.023890  -0.000004  -0.012204   0.026491   0.000000
# Chi-squared of fit:    17.15 DOF:     54 RMS:  0.13
# Min/Max residuals:    -0.46    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.495424E-05  2.308888E-02 -7.897671E-06 -1.187295E-02  2.445834E-02 -6.412262E-03
# Covariance matrix:
  2.2196E-13  1.8192E-12  6.8759E-15 -9.8786E-13  1.7021E-12  1.9727E-11
  1.8192E-12  9.1085E-11  3.3516E-13 -4.8276E-11  8.2978E-11  9.6411E-10
  6.8759E-15  3.3516E-13  1.8501E-13 -2.2234E-13  3.0717E-13  3.5449E-12
 -9.8786E-13 -4.8276E-11 -2.2234E-13  2.5608E-11 -4.3956E-11 -5.1113E-10
  1.7021E-12  8.2978E-11  3.0717E-13 -4.3956E-11  7.6027E-11  8.7769E-10
  1.9727E-11  9.6411E-10  3.5449E-12 -5.1113E-10  8.7769E-10  1.0208E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.006171   27.336008    0.186031   -0.254880   -0.951473  2457306.004128
# Heliocentric elements and errors
Epoch:              2457300.5000  =  2015/10/05
Mean Anomaly:          331.57879 +/-     0.191
Argument of Peri:      268.10678 +/-     0.378
Long of Asc Node:      180.95348 +/-     0.001
Inclination:            30.71491 +/-     0.001
Eccentricity:         0.35659402 +/-    0.0042
Semi-Major Axis:     56.88338824 +/-    0.2253
Time of Perihelion: 2469671.8394 +/-      38.8
Perihelion:          36.59911197 +/-    0.2798
Aphelion:            77.16766451 +/-    0.3882
Period (y)              429.0287 +/-      2.55
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.03795474 +/-    0.0125
Ecliptic Y           18.42156930 +/-    0.0065
Ecliptic Z          -10.58661575 +/-    0.0038
Ecliptic XDOT        -0.00211007 +/-    0.0000
Ecliptic YDOT         0.00181299 +/-    0.0000
Ecliptic ZDOT        -0.00109783 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.83497138 +/-    0.0112
Geocenter to KBO     40.88585465 +/-    0.0146
# Hcoef:  9.23

The following table shows the complete astrometric record for 15TN363. 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 (15TN363) followed by the observatory code and reference code for the source of the astrometry.

2015 10  10.503339 02 02 53.652  -03 30 15.60  24.9r 15TN363   568  C~2TuW      
2015 10  10.506223 02 02 53.639  -03 30 15.80  25.0r 15TN363   568  C~2TuW      
2015 10  10.537679 02 02 53.504  -03 30 16.95  25.1r 15TN363   568  C~2TuW      
2015 10  10.566184 02 02 53.381  -03 30 17.87  25.0r 15TN363   568  C~2TuW      
2015 10  10.600922 02 02 53.227  -03 30 19.03  25.1r 15TN363   568  C~2TuW      
2015 10  14.505211 02 02 36.278  -03 32 35.73  25.5g 15TN363   568  C~2TuW      
2015 10  14.508049 02 02 36.271  -03 32 35.86  25.5g 15TN363   568  C~2TuW      
2015 10  14.568007 02 02 36.001  -03 32 37.99  25.2g 15TN363   568  C~2TuW      
2019 10  27.29340  02 25 55.25   -04 20 13.5   24.7r 15TN363   T09  C~7zoa      
2019 10  27.30457  02 25 55.19   -04 20 14.2   25.4r 15TN363   T09  C~7zoa      
2019 10  27.31576  02 25 55.13   -04 20 14.0   25.6r 15TN363   T09  C~7zoa      
2019 10  27.43225  02 25 54.58   -04 20 17.4   25.2i 15TN363   T09  C~7zoa      
2019 10  27.45055  02 25 54.52   -04 20 18.1   24.8i 15TN363   T09  C~7zob      
2019 10  27.46883  02 25 54.43   -04 20 18.6   25.3i 15TN363   T09  C~7zob      
2019 10  31.49932  02 25 35.65   -04 22 19.8   25.6z 15TN363   T09  C~7zob      
2019 10  31.51788  02 25 35.57   -04 22 20.5   24.8z 15TN363   T09  C~7zob      
2019 10  31.52139  02 25 35.55   -04 22 20.6   25.2z 15TN363   T09  C~7zob      
2019 10  31.53991  02 25 35.49   -04 22 21.1   25.6z 15TN363   T09  C~7zob      
2019 11  01.36052  02 25 31.67   -04 22 44.5   25.9g 15TN363   T09  C~7zob      
2019 11  01.44090  02 25 31.27   -04 22 46.9   26.2g 15TN363   T09  C~7zob      
2019 11  01.57590  02 25 30.64   -04 22 50.9   25.6g 15TN363   T09  C~7zob      
2019 11  27.34361  02 23 35.72   -04 31 55.8   24.9i 15TN363   T09  C~7zob      
2019 11  27.36574  02 23 35.63   -04 31 56.2   25.0i 15TN363   T09  C~7zob      
2019 11  29.34620  02 23 27.66   -04 32 20.9   25.4r 15TN363   T09  C~7zob      
2019 11  29.36038  02 23 27.61   -04 32 21.1   25.6r 15TN363   T09  C~7zob      
2019 12  22.27977  02 22 12.46   -04 33 47.6   26.2r 15TN363   T09  C~7zob      
2019 12  22.29498  02 22 12.41   -04 33 47.7   25.4r 15TN363   T09  C~7zob      
2019 12  28.23064  02 21 59.20   -04 33 10.9   26.4g 15TN363   T09  C~7zob      
2019 12  28.28244  02 21 59.09   -04 33 10.4   25.9g 15TN363   T09  C~7zob      
2019 12  28.32010  02 21 59.01   -04 33 10.4   25.7g 15TN363   T09  C~7zob      

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    -0.01       0.00     0.05
     2   0.0000     -0.25    -0.05      -0.12    -0.04
     3   0.0001     -2.55    -0.02      -0.48    -0.09
     4   0.0002     -4.60     0.03      -0.69    -0.01
     5   0.0003     -7.17     0.02      -0.96     0.07
     6   0.0110   -292.88    -0.02     -38.98     0.06
     7   0.0110   -293.02     0.05     -39.06     0.00
     8   0.0111   -297.56    -0.01     -39.63    -0.05
     9   4.0460  18303.93     0.04  -10218.68    -0.17
    10   4.0460  18302.84    -0.20  -10219.01    -0.46
    11   4.0460  18302.06    -0.10  -10218.50     0.10
    12   4.0463  18293.08    -0.03  -10218.68     0.30
    13   4.0464  18291.98     0.29  -10219.01     0.04
    14   4.0464  18290.54     0.27  -10218.99     0.12
    15   4.0575  17982.13    -0.19  -10230.22     0.11
    16   4.0575  17980.75    -0.13  -10230.44    -0.08
    17   4.0575  17980.43    -0.18  -10230.42    -0.06
    18   4.0576  17979.41     0.22  -10230.56    -0.18
    19   4.0598  17917.14     0.18  -10231.68     0.12
    20   4.0601  17910.64    -0.12  -10231.75     0.13
    21   4.0604  17900.32    -0.05  -10232.06    -0.07
    22   4.1310  16086.18     0.09  -10117.14     0.18
    23   4.1310  16084.77     0.08  -10117.02     0.07
    24   4.1365  15963.78    -0.15  -10096.84    -0.01
    25   4.1365  15963.01    -0.06  -10096.75    -0.08
    26   4.1993  14875.55     0.07   -9769.63     0.13
    27   4.1993  14874.81    -0.15   -9769.46     0.04
    28   4.2155  14702.48     0.10   -9663.31    -0.04
    29   4.2157  14701.12     0.09   -9662.24     0.05
    30   4.2158  14699.99    -0.06   -9661.81    -0.23

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.

15TN363    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        57.578    58.146    57.041
ecceobj         0.361     0.371     0.351
incobj         30.573    30.570    30.577
qmin           35.912    35.834    36.221
qmax           78.883    80.273    77.698
amean          56.942    57.582    56.513
amin           56.249    56.977    55.907
amax           57.779    58.397    57.301
emean           0.344     0.357     0.341
emin            0.320     0.338     0.328
emax            0.367     0.376     0.358
imean          30.701    30.639    30.481
imin           30.032    30.120    30.077
imax           31.470    31.215    30.873
excite_mean     0.616     0.623     0.611
fracstop        1.000     1.000     1.000
cjmean          2.749     2.745     2.753

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       198.8     197.4     181.5
kozaiamp        180.0     179.9     179.9