Orbit Fit and Astrometric record for 15TP363

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: 15TP363   
# Created Tue Apr  1 01:10:35 2025
# Orbit generated from Bernstein formalism
# Fitting     19 observations of     19
# Arc:  30.91d
# First observation: 2015/10/10
#  Last observation: 2015/11/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.000002   0.016677   0.000000   0.012233   0.021731   0.000000
# Chi-squared of fit:     4.70 DOF:     32 RMS:  0.09
# Min/Max residuals:    -0.21    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.187218E-05  1.633314E-02  8.823071E-06  1.226075E-02  2.170428E-02  5.449122E-03
# Covariance matrix:
  3.4754E-13  2.1405E-10  9.0658E-14 -4.5333E-12  3.5997E-11  7.5905E-10
  2.1405E-10  2.8939E-07  1.2680E-10 -7.3741E-09  4.6229E-08 -1.9906E-07
  9.0658E-14  1.2680E-10  1.8149E-13 -5.2142E-12  2.0163E-11 -1.4696E-10
 -4.5333E-12 -7.3741E-09 -5.2142E-12  2.7970E-10 -1.1545E-09  1.9602E-08
  3.5997E-11  4.6229E-08  2.0163E-11 -1.1545E-09  7.4233E-09 -9.5431E-09
  7.5905E-10 -1.9906E-07 -1.4696E-10  1.9602E-08 -9.5431E-09  1.3715E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
  -14.784825   27.732897    0.192800   -0.250870   -0.951190  2457306.007012
# Heliocentric elements and errors
Epoch:              2457300.5000  =  2015/10/05
Mean Anomaly:           49.25891 +/-    10.193
Argument of Peri:      256.99774 +/-     9.460
Long of Asc Node:       45.98616 +/-     0.583
Inclination:            39.14883 +/-     0.857
Eccentricity:         0.28364265 +/-    0.1869
Semi-Major Axis:     53.73720365 +/-    6.2239
Time of Perihelion: 2437612.8764 +/-    2212.9
Perihelion:          38.49504091 +/-   10.9875
Aphelion:            68.97936639 +/-   12.8326
Period (y)              393.9316 +/-     68.44
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.38760962 +/-    0.1565
Ecliptic Y           21.01741756 +/-    0.0823
Ecliptic Z          -11.75719246 +/-    0.0467
Ecliptic XDOT        -0.00002280 +/-    0.0004
Ecliptic YDOT         0.00231004 +/-    0.0002
Ecliptic ZDOT         0.00132004 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   47.02257358 +/-    0.1399
Geocenter to KBO     46.07385671 +/-    0.1829
# Hcoef:  7.06

The following table shows the complete astrometric record for 15TP363. 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 (15TP363) followed by the observatory code and reference code for the source of the astrometry.

2015 10  10.506223 02 04 01.112  -03 09 42.29  23.8r 15TP363   568  C~2TuW      
2015 10  10.518114 02 04 01.061  -03 09 42.52  23.6r 15TP363   568  C~2TuW      
2015 10  10.537679 02 04 00.977  -03 09 42.93  23.7r 15TP363   568  C~2TuW      
2015 10  10.539803 02 04 00.966  -03 09 42.97  23.7r 15TP363   568  C~2TuW      
2015 10  10.566184 02 04 00.852  -03 09 43.48  23.8r 15TP363   568  C~2TuW      
2015 10  10.577109 02 04 00.808  -03 09 43.74  23.8r 15TP363   568  C~2TuW      
2015 10  10.600922 02 04 00.704  -03 09 44.21  23.8r 15TP363   568  C~2TuW      
2015 10  14.508049 02 03 43.917  -03 11 01.78  24.4g 15TP363   568  C~2TuW      
2015 10  14.539481 02 03 43.778  -03 11 02.34  24.7g 15TP363   568  C~2TuW      
2015 10  14.568007 02 03 43.654  -03 11 02.89  24.6g 15TP363   568  C~2TuW      
2015 10  14.602694 02 03 43.503  -03 11 03.55  24.6g 15TP363   568  C~2TuW      
2015 10  20.45130  02 03 17.87   -03 12 51.5   23.1y 15TP363   T09  C~8cQp      
2015 10  20.49007  02 03 17.71   -03 12 52.4   23.0y 15TP363   T09  C~8cQp      
2015 10  20.50917  02 03 17.62   -03 12 52.5   23.0y 15TP363   T09  C~8cQp      
2015 10  20.52266  02 03 17.55   -03 12 53.0   22.8y 15TP363   T09  C~8cQp      
2015 11  10.39281  02 01 45.64   -03 17 39.8   23.7i 15TP363   T09  C~8cQp      
2015 11  10.39623  02 01 45.64   -03 17 40.1   23.4i 15TP363   T09  C~8cQp      
2015 11  10.40586  02 01 45.59   -03 17 39.9   23.6i 15TP363   T09  C~8cQp      
2015 11  10.41689  02 01 45.56   -03 17 40.3   23.5i 15TP363   T09  C~8cQp      

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     0.02
     2   0.0000     -0.80     0.02       0.05     0.03
     3   0.0001     -2.12     0.02       0.11     0.02
     4   0.0001     -2.29    -0.01       0.13     0.03
     5   0.0002     -4.06     0.00       0.26     0.05
     6   0.0002     -4.77     0.03       0.25    -0.00
     7   0.0003     -6.40     0.01       0.36     0.02
     8   0.0110   -269.02    -0.06      16.42    -0.11
     9   0.0110   -271.16    -0.05      16.63    -0.06
    10   0.0111   -273.10    -0.03      16.77    -0.07
    11   0.0112   -275.44    -0.01      16.95    -0.07
    12   0.0272   -672.75    -0.03      51.25     0.17
    13   0.0273   -675.31     0.10      51.25    -0.11
    14   0.0274   -676.61     0.12      51.63     0.14
    15   0.0274   -677.77    -0.11      51.54    -0.06
    16   0.0846  -2067.06    -0.12     268.02     0.18
    17   0.0846  -2067.16    -0.00     267.74    -0.15
    18   0.0846  -2067.79    -0.02     268.19     0.17
    19   0.0846  -2068.36     0.13     267.97    -0.21

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.

15TP363    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0