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: 15VS207
# Created Sun Dec 22 02:10:38 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 3.06y
# First observation: 2014/10/28
# Last observation: 2017/11/17
Preliminary a, adot, b, bdot, g, gdot:
-0.000273 0.039619 0.000000 -0.000192 0.029229 0.000000
# Chi-squared of fit: 13.29 DOF: 44 RMS: 0.13
# Min/Max residuals: -0.26 0.27
# Exact a, adot, b, bdot, g, gdot:
2.093172E-05 3.919784E-02 -4.411623E-07 -1.908324E-04 2.915884E-02 -8.274501E-04
# Covariance matrix:
1.3384E-12 -1.5413E-12 -3.2268E-15 6.0440E-15 -6.3305E-13 -9.2213E-12
-1.5413E-12 2.8964E-12 7.0841E-15 -1.3289E-14 1.3820E-12 2.0295E-11
-3.2268E-15 7.0841E-15 7.6417E-13 -2.7613E-13 4.1793E-15 5.2964E-14
6.0440E-15 -1.3289E-14 -2.7613E-13 1.0799E-13 -7.3569E-15 -9.8337E-14
-6.3305E-13 1.3820E-12 4.1793E-15 -7.3569E-15 1.0058E-12 1.0733E-11
-9.2213E-12 2.0295E-11 5.2964E-14 -9.8337E-14 1.0733E-11 1.4913E-10
# lat0 lon0 xBary yBary zBary JD0
1.189661 -7.165186 -0.659020 0.015661 -0.745534 2456958.658968
# Heliocentric elements and errors
Epoch: 2456950.5000 = 2014/10/20
Mean Anomaly: 359.88918 +/- 0.010
Argument of Peri: 104.90436 +/- 0.053
Long of Asc Node: 249.51362 +/- 0.022
Inclination: 1.20188 +/- 0.000
Eccentricity: 0.60035609 +/- 0.0001
Semi-Major Axis: 87.68673986 +/- 0.0243
Time of Perihelion: 2457042.8268 +/- 7.9
Perihelion: 35.04347158 +/- 0.0131
Aphelion: 140.33000814 +/- 0.0398
Period (y) 821.1246 +/- 0.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 34.83935384 +/- 0.0012
Ecliptic Y -3.71393858 +/- 0.0001
Ecliptic Z 0.71196805 +/- 0.0000
Ecliptic XDOT 0.00037794 +/- 0.0000
Ecliptic YDOT 0.00365653 +/- 0.0000
Ecliptic ZDOT -0.00001942 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 35.04398399 +/- 0.0012
Geocenter to KBO 34.29491225 +/- 0.0012
# Hcoef: 8.01
The following table shows the complete astrometric record for 15VS207. 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 (15VS207) followed by the observatory code and reference code for the source of the astrometry.
2014 10 28.15819 23 31 48.087 -01 45 03.49 22.8z 15VS207 W84 C~55XF 2015 11 06.06654 23 39 36.595 -00 55 38.59 23.7r 15VS207 W84 C~55XF 2015 11 07.03969 23 39 33.939 -00 55 57.97 23.2i 15VS207 W84 C~55XF 2016 10 08.06582 23 49 41.623 +00 09 31.97 23.2i 15VS207 W84 C~55XF 2017 07 30.50809 00 02 55.84 +01 33 58.6 24.0r 15VS207 T09 C~7bM7 2017 07 30.53502 00 02 55.77 +01 33 58.2 23.8r 15VS207 T09 C~7bM7 2017 07 30.57994 00 02 55.68 +01 33 57.7 23.9r 15VS207 T09 C~7bM7 2017 07 30.58204 00 02 55.67 +01 33 57.7 23.6r 15VS207 T09 C~7bM7 2017 07 30.61199 00 02 55.57 +01 33 57.0 24.0r 15VS207 T09 C~7bM7 2017 08 01.45145 00 02 51.06 +01 33 30.6 23.0y 15VS207 T09 C~8HC8 2017 08 01.55130 00 02 50.79 +01 33 28.9 23.4y 15VS207 T09 C~8HC8 2017 08 01.59219 00 02 50.69 +01 33 28.6 23.4y 15VS207 T09 C~8HC8 2017 08 18.30364 00 01 57.182 +01 28 02.72 23.1r 15VS207 W84 C~55XF 2017 08 18.30501 00 01 57.184 +01 28 02.99 22.8i 15VS207 W84 C~55XF 2017 09 17.29024 23 59 42.09 +01 13 41.6 22.6i 15VS207 T09 C~8Q2f 2017 09 17.31571 23 59 41.96 +01 13 41.1 23.2i 15VS207 T09 C~8Q2f 2017 09 17.31838 23 59 41.96 +01 13 40.9 23.3i 15VS207 T09 C~8Q2f 2017 09 17.35851 23 59 41.75 +01 13 39.6 23.3i 15VS207 T09 C~8Q2f 2017 09 17.39893 23 59 41.56 +01 13 38.4 22.9i 15VS207 T09 C~8Q2f 2017 09 17.41517 23 59 41.46 +01 13 37.9 23.4i 15VS207 T09 C~8Q2f 2017 09 27.15805 23 58 53.032 +01 08 21.23 22.7z 15VS207 W84 C~55XF 2017 09 27.15940 23 58 53.022 +01 08 21.29 23.0i 15VS207 W84 C~55XF 2017 09 27.16078 23 58 53.006 +01 08 21.12 23.0r 15VS207 W84 C~55XF 2017 11 15.07268 23 55 37.773 +00 46 10.07 23.4i 15VS207 W84 C~55XF 2017 11 17.03035 23 55 33.367 +00 45 37.57 23.6r 15VS207 W84 C~55XF
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 0.07
2 1.0237 7628.92 -0.17 -53.50 0.09
3 1.0264 7584.61 -0.01 -55.54 -0.21
4 1.9464 17549.39 0.16 -54.10 -0.04
5 2.7552 30674.66 -0.02 -113.23 0.05
6 2.7553 30673.51 -0.08 -113.18 0.05
7 2.7554 30672.04 0.27 -113.11 0.03
8 2.7554 30671.90 0.22 -113.05 0.09
9 2.7555 30670.21 -0.26 -113.10 -0.02
10 2.7606 30596.06 -0.05 -110.61 0.10
11 2.7608 30591.57 -0.23 -110.57 -0.05
12 2.7609 30590.04 0.02 -110.25 0.20
13 2.8067 29705.73 0.04 -92.38 -0.24
14 2.8067 29705.86 0.27 -92.14 -0.01
15 2.8888 27462.21 -0.25 -82.49 -0.16
16 2.8889 27460.19 -0.15 -82.17 0.15
17 2.8889 27460.11 -0.01 -82.36 -0.03
18 2.8890 27456.64 -0.12 -82.31 0.01
19 2.8891 27453.50 0.11 -82.28 0.01
20 2.8891 27451.89 -0.13 -82.15 0.14
21 2.9158 26645.97 0.14 -85.85 -0.11
22 2.9158 26645.86 0.14 -85.74 0.01
23 2.9158 26645.57 -0.04 -85.80 -0.06
24 3.0497 23382.43 0.01 -150.41 -0.09
25 3.0551 23307.94 0.06 -154.13 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.
15VS207 quality flag:2 Type: 5:1EEEE SCATNEAR 5:1EEEE axisobj 89.648 89.720 89.576 ecceobj 0.609 0.610 0.609 incobj 1.203 1.203 1.203 qmin 34.229 34.192 34.235 qmax 146.513 149.919 146.612 amean 88.043 88.434 88.043 amin 86.181 86.104 86.107 amax 90.786 92.520 90.842 emean 0.601 0.603 0.601 emin 0.590 0.590 0.590 emax 0.614 0.621 0.614 imean 2.714 2.808 2.667 imin 2.590 2.504 2.538 imax 2.867 3.070 2.814 excite_mean 0.603 0.605 0.603 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.072 libcent 0 181.0 -180.0 181.4 libamp 0 170.0 -180.0 169.8 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 250.8 192.8 247.7 kozaiamp 180.0 179.9 127.1