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: 15VT152 # Created Sun Dec 22 02:10:32 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 9.08y # First observation: 2015/11/06 # Last observation: 2024/12/04 # Chi-squared of fit: 18.39 DOF: 42 RMS: 0.15 # Min/Max residuals: -0.31 0.40 # Exact a, adot, b, bdot, g, gdot: 1.725516E-05 5.280658E-02 -6.484462E-06 -1.708479E-02 4.585081E-02 -1.204396E-02 # Covariance matrix: 1.5842E-13 -8.9115E-14 -2.1614E-14 2.3902E-14 2.2652E-14 -1.3183E-13 -8.9115E-14 1.4904E-13 1.2375E-14 -4.7482E-14 1.3817E-13 2.3454E-13 -2.1614E-14 1.2375E-14 1.1362E-13 -1.6653E-14 -6.5408E-14 2.7590E-14 2.3902E-14 -4.7482E-14 -1.6653E-14 1.9554E-14 -4.9812E-14 -7.6315E-14 2.2652E-14 1.3817E-13 -6.5408E-14 -4.9812E-14 6.1476E-13 1.7592E-13 -1.3183E-13 2.3454E-13 2.7590E-14 -7.6315E-14 1.7592E-13 3.8386E-13 # lat0 lon0 xBary yBary zBary JD0 -37.879992 19.255781 -0.404282 -0.557900 -0.717530 2457332.806611 # Heliocentric elements and errors Epoch: 2457332.5000 = 2015/11/06 Mean Anomaly: 249.57757 +/- 0.015 Argument of Peri: 21.57449 +/- 0.008 Long of Asc Node: 137.56686 +/- 0.000 Inclination: 39.67580 +/- 0.000 Eccentricity: 0.23840599 +/- 0.0000 Semi-Major Axis: 20.00698440 +/- 0.0011 Time of Perihelion: 2467358.4536 +/- 2.3 Perihelion: 15.23719945 +/- 0.0009 Aphelion: 24.77676935 +/- 0.0014 Period (y) 89.4913 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.97228925 +/- 0.0003 Ecliptic Y 6.35780759 +/- 0.0001 Ecliptic Z -13.39163847 +/- 0.0002 Ecliptic XDOT -0.00216853 +/- 0.0000 Ecliptic YDOT 0.00257634 +/- 0.0000 Ecliptic ZDOT -0.00036360 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 22.53486621 +/- 0.0003 Geocenter to KBO 21.80998852 +/- 0.0004 # Hcoef: 9.31
The following table shows the complete astrometric record for 15VT152. 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 (15VT152) followed by the observatory code and reference code for the source of the astrometry.
2015 11 06.305822 02 11 49.07 -27 22 27.5 23.2i 15VT152 W84 C~1yTE 2015 11 07.305231 02 11 39.93 -27 22 47.4 23.1r 15VT152 W84 C~1yTE 2015 11 14.120428 02 10 38.88 -27 24 08.1 23.1r 15VT152 W84 C~1yTE 2015 11 14.121806 02 10 38.87 -27 24 07.9 23.8g 15VT152 W84 C~1yTE 2015 11 15.126481 02 10 30.07 -27 24 12.3 22.6i 15VT152 W84 C~1yTE 2015 11 21.101111 02 09 39.34 -27 23 53.7 22.7i 15VT152 W84 C~1yTE 2015 11 30.232743 02 08 28.05 -27 21 07.3 23.0i 15VT152 W84 C~1yTE 2015 11 30.234109 02 08 28.04 -27 21 07.2 22.6z 15VT152 W84 C~1yTE 2016 10 28.332986 02 27 24.89 -26 51 47.1 15VT152 W84 C~3xrk 2016 10 28.334352 02 27 24.88 -26 51 46.9 15VT152 W84 C~3xrk 2016 10 28.335741 02 27 24.85 -26 51 47.2 15VT152 W84 C~3xrk 2016 11 28.220984 02 22 47.94 -26 56 56.8 15VT152 W84 C~3xrk 2016 11 28.222350 02 22 47.95 -26 56 57.0 15VT152 W84 C~3xrk 2017 01 30.066146 02 19 34.57 -25 40 18.7 22.6i 15VT152 W84 C~3xrk 2017 01 30.068079 02 19 34.58 -25 40 18.5 23.0g 15VT152 W84 C~3xrk 2017 01 30.069468 02 19 34.60 -25 40 18.2 22.6r 15VT152 W84 C~3xrk 2017 11 18.283275 02 38 43.05 -26 27 36.5 15VT152 W84 C~3xrk 2017 11 18.284653 02 38 43.02 -26 27 36.5 15VT152 W84 C~3xrk 2017 11 18.286042 02 38 43.02 -26 27 36.4 15VT152 W84 C~3xrk 2024 01 09.114300 04 03 18.197 -20 36 33.36 22.3G 15VT152 G37 C~7gt0 2024 01 09.226550 04 03 17.447 -20 36 24.51 15VT152 G37 C~7gt0 2024 12 04.415266 04 24 44.774 -19 42 33.66 22.5w 15VT152 F51 C~8SY1 2024 12 04.426365 04 24 44.675 -19 42 33.49 22.3w 15VT152 F51 C~8SY1 2024 12 04.437471 04 24 44.542 -19 42 33.56 22.3w 15VT152 F51 C~8SY1
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 0.14 0.00 0.19
2 0.0027 0.00 -0.12 0.00 -0.01
3 0.0214 0.00 -0.18 0.00 0.19
4 0.0214 0.00 -0.14 0.00 0.40
5 0.0241 0.00 -0.31 0.00 -0.04
6 0.0405 0.00 -0.06 0.00 -0.12
7 0.0655 0.00 0.20 0.00 -0.24
8 0.0655 0.00 0.21 0.00 -0.18
9 0.9775 0.00 0.11 0.00 -0.18
10 0.9775 0.00 0.15 0.00 0.07
11 0.9775 0.00 -0.10 0.00 -0.17
12 1.0621 0.00 0.02 0.00 0.27
13 1.0621 0.00 0.34 0.00 0.04
14 1.2341 0.00 -0.12 0.00 -0.01
15 1.2341 0.00 -0.05 0.00 -0.02
16 1.2341 0.00 0.20 0.00 0.13
17 2.0342 0.00 0.07 0.00 -0.13
18 2.0342 0.00 -0.19 0.00 -0.12
19 2.0342 0.00 0.01 0.00 -0.02
20 8.1747 0.00 0.02 0.00 -0.02
21 8.1750 0.00 -0.12 0.00 -0.03
22 9.0790 0.00 -0.11 0.00 -0.05
23 9.0790 0.00 0.17 0.00 0.10
24 9.0791 0.00 -0.05 0.00 0.01
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.
15VT152 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 20.100 20.100 20.100 ecceobj 0.233 0.233 0.233 incobj 39.625 39.625 39.625 qmin 15.101 15.101 15.101 qmax 25.073 25.127 25.145 amean 20.068 20.095 20.063 amin 19.823 19.732 19.889 amax 20.357 20.470 20.224 emean 0.217 0.224 0.226 emin 0.165 0.161 0.178 emax 0.246 0.246 0.246 imean 38.310 38.206 38.188 imin 37.819 37.808 37.825 imax 39.073 39.074 38.943 excite_mean 0.657 0.658 0.659 fracstop 0.023 0.020 0.020 cjmean 2.750 2.750 2.751 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 52.6 48.7 48.9 kozaiamp 34.8 26.0 24.2