Orbit Fit and Astrometric record for 15TJ367

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: 15TJ367   
# Created Wed Feb 20 02:10:37 2019
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   1.06y
# First observation: 2015/10/13
#  Last observation: 2016/11/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000006   0.006801  -0.000001  -0.003775   0.013091   0.000000
# Chi-squared of fit:    17.19 DOF:   16 RMS:  0.22
# Min/Max residuals:    -0.57    0.47
# Exact a, adot, b, bdot, g, gdot:
  8.840753E-06  6.839245E-03 -5.050847E-06 -3.798995E-03  1.314297E-02  5.625257E-03
# Covariance matrix:
  4.9058E-13 -1.1481E-13  1.1132E-14 -2.2493E-13  6.0989E-13  5.6960E-11
 -1.1481E-13  2.5792E-12  6.3153E-14 -1.2878E-12  1.4974E-12  3.2614E-10
  1.1132E-14  6.3153E-14  3.3385E-13 -3.9145E-13  6.0105E-14  1.0989E-11
 -2.2493E-13 -1.2878E-12 -3.9145E-13  1.4981E-12 -1.2188E-12 -2.2379E-10
  6.0989E-13  1.4974E-12  6.0105E-14 -1.2188E-12  2.5648E-12  3.0866E-10
  5.6960E-11  3.2614E-10  1.0989E-11 -2.2379E-10  3.0866E-10  5.6676E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.482984   42.287239    0.387594    0.007953   -0.923532  2457308.925879
# Heliocentric elements and errors
Epoch:              2457300.5000  =  2015/10/05
Mean Anomaly:           52.65035 +/-     2.780
Argument of Peri:       57.03004 +/-     1.125
Long of Asc Node:      222.86075 +/-     0.000
Inclination:            29.01030 +/-     0.007
Eccentricity:         0.58022972 +/-    0.0177
Semi-Major Axis:     80.40987522 +/-    2.5184
Time of Perihelion: 2418782.7171 +/-     928.8
Perihelion:          33.75367559 +/-    1.7751
Aphelion:           127.06607486 +/-    4.2274
Period (y)              721.0615 +/-     33.88
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           57.22514611 +/-    0.0069
Ecliptic Y           51.52700380 +/-    0.0062
Ecliptic Z            0.64098022 +/-    0.0001
Ecliptic XDOT        -0.00008844 +/-    0.0000
Ecliptic YDOT         0.00184032 +/-    0.0000
Ecliptic ZDOT        -0.00078143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   77.00753420 +/-    0.0066
Geocenter to KBO     76.08631063 +/-    0.0093
# Hcoef:  6.69

The following table shows the complete astrometric record for 15TJ367. 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 (15TJ367) followed by the observatory code and reference code for the source of the astrometry.

2015 10  13.42509  02 38 45.739  +15 59 02.19  25.4r 15TJ367   568  C~2ZsR      
2015 10  13.57047  02 38 45.370  +15 59 00.21  25.3r 15TJ367   568  C~2ZsR      
2015 10  13.61806  02 38 45.241  +15 58 59.73  25.5r 15TJ367   568  C~2ZsR      
2015 12  09.10667  02 36 15.240  +15 45 10.39  25.3r 15TJ367   304  C~2ZsR      
2015 12  09.18207  02 36 15.072  +15 45 08.88        15TJ367   304  C~2ZsR      
2016 09  27.25783  02 41 10.830  +15 57 05.74        15TJ367   304  C~2ZsR      
2016 09  27.31337  02 41 10.715  +15 57 05.94        15TJ367   304  C~2ZsR      
2016 09  28.24525  02 41 08.703  +15 56 54.51        15TJ367   304  C~2ZsR      
2016 10  01.30819  02 41 01.950  +15 56 16.45        15TJ367   304  C~2ZsR      
2016 11  02.19930  02 39 39.108  +15 48 46.17        15TJ367   304  C~2ZsR      
2016 11  03.15098  02 39 36.457  +15 48 31.82        15TJ367   304  C~2ZsR      

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    -0.13       0.00     0.10
  2   0.0004     -5.67     0.05      -0.26     0.11
  3   0.0005     -7.59     0.04      -0.14     0.31
  4   0.1552  -2322.12     0.07    -123.71    -0.05
  5   0.1554  -2324.90    -0.04    -124.39    -0.57
  6   0.9578   1957.47    -0.11    -748.53    -0.32
  7   0.9579   1955.95     0.23    -747.84     0.47
  8   0.9605   1924.82    -0.07    -749.93     0.25
  9   0.9689   1820.46     0.01    -756.63    -0.38
 10   1.0562    544.83    -0.05    -821.84     0.02
 11   1.0588    504.02    -0.01    -823.83     0.05

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.

15TJ367    quality flag:1

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        81.620    90.601    75.040
ecceobj         0.581     0.635     0.530
incobj         28.808    28.800    28.816
qmin           31.543    31.404    33.026
qmax          131.999   151.981   118.405
amean          80.528    89.493    74.464
amin           78.655    87.452    73.437
amax           82.805    92.103    76.035
emean           0.581     0.630     0.534
emin            0.556     0.608     0.517
emax            0.608     0.650     0.557
imean          29.589    29.992    29.403
imin           27.699    28.755    28.296
imax           30.963    31.523    30.284
excite_mean     0.762     0.804     0.726
fracstop        1.000     1.000     1.000
cjmean          2.689     2.654     2.719

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       151.0     155.4     167.3
kozaiamp        113.8      95.6     117.4