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: 15KS174
# Created Sun Dec 22 02:10:24 2024
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 2.51y
# First observation: 2015/02/20
# Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000105 0.052092 -0.000013 -0.003477 0.039297 0.000000
# Chi-squared of fit: 10.66 DOF: 62 RMS: 0.10
# Min/Max residuals: -0.30 0.22
# Exact a, adot, b, bdot, g, gdot:
2.106331E-05 5.163550E-02 -1.325355E-06 -3.512049E-03 3.869387E-02 7.462242E-03
# Covariance matrix:
1.6295E-13 -1.1324E-13 -8.5299E-15 1.0716E-14 5.9527E-14 -1.1625E-12
-1.1324E-13 7.3423E-13 1.5425E-14 -7.2406E-14 2.3184E-13 9.9317E-12
-8.5299E-15 1.5425E-14 9.0103E-14 -6.2982E-14 -2.7115E-15 2.7203E-13
1.0716E-14 -7.2406E-14 -6.2982E-14 8.6652E-14 -2.0083E-14 -1.1223E-12
5.9527E-14 2.3184E-13 -2.7115E-15 -2.0083E-14 1.6931E-13 3.0987E-12
-1.1625E-12 9.9317E-12 2.7203E-13 -1.1223E-12 3.0987E-12 1.5232E-10
# lat0 lon0 xBary yBary zBary JD0
6.045439 -125.545980 0.978599 0.012712 -0.118792 2457074.153358
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 21.31890 +/- 0.030
Argument of Peri: 87.01733 +/- 0.054
Long of Asc Node: 110.94214 +/- 0.002
Inclination: 7.03041 +/- 0.000
Eccentricity: 0.22831679 +/- 0.0002
Semi-Major Axis: 32.59215075 +/- 0.0040
Time of Perihelion: 2453045.8297 +/- 5.6
Perihelion: 25.15081551 +/- 0.0069
Aphelion: 40.03348599 +/- 0.0078
Period (y) 186.0706 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -15.80923032 +/- 0.0002
Ecliptic Y -20.43894790 +/- 0.0002
Ecliptic Z 2.72178224 +/- 0.0000
Ecliptic XDOT 0.00264862 +/- 0.0000
Ecliptic YDOT -0.00257812 +/- 0.0000
Ecliptic ZDOT -0.00019142 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 25.98250283 +/- 0.0002
Geocenter to KBO 25.84388830 +/- 0.0003
# Hcoef: 10.56
The following table shows the complete astrometric record for 15KS174. 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 (15KS174) followed by the observatory code and reference code for the source of the astrometry.
2015 02 20.65258 15 34 24.861 -13 00 57.90 24.9r 15KS174 568 C~2lVK 2015 03 19.58718 15 33 59.057 -12 53 58.55 24.3r 15KS174 568 C~2lVK 2015 03 21.64578 15 33 52.653 -12 53 13.62 24.7r 15KS174 568 C~2lVK 2015 04 12.50451 15 32 12.570 -12 44 04.70 24.1r 15KS174 568 C~2lVK 2015 04 12.54547 15 32 12.311 -12 44 03.66 25.2r 15KS174 568 C~2lVK 2015 04 18.52716 15 31 36.302 -12 41 18.83 24.6r 15KS174 568 C~2lVK 2015 05 17.37006 15 28 14.704 -12 28 22.74 24.5r 15KS174 568 C~2lVK 2015 05 17.41677 15 28 14.351 -12 28 21.51 24.3r 15KS174 568 C~2lVK 2015 05 17.45892 15 28 14.042 -12 28 20.83 24.6r 15KS174 568 C~2lVK 2015 05 24.36087 15 27 23.823 -12 25 38.62 25.2r 15KS174 568 C~2lVK 2015 05 24.40713 15 27 23.483 -12 25 37.47 24.3r 15KS174 568 C~2lVK 2015 05 24.44802 15 27 23.188 -12 25 36.74 24.5r 15KS174 568 C~2lVK 2015 05 26.43568 15 27 08.913 -12 24 52.82 24.3r 15KS174 568 C~2lVK 2015 06 18.33508 15 24 38.698 -12 18 29.48 24.7r 15KS174 568 C~2lVK 2015 06 18.37614 15 24 38.453 -12 18 28.69 24.6r 15KS174 568 C~2lVK 2015 06 21.35078 15 24 21.770 -12 17 57.94 24.5r 15KS174 568 C~2lVK 2015 07 15.30645 15 22 42.483 -12 16 56.26 25.3r 15KS174 568 C~2lVK 2015 07 17.33708 15 22 37.337 -12 17 07.32 24.4r 15KS174 568 C~2lVK 2015 07 18.30854 15 22 35.072 -12 17 13.33 25.0r 15KS174 568 C~2lVK 2016 02 06.62103 15 45 20.785 -13 54 16.34 25.3w 15KS174 568 C~2lVK 2016 02 06.62508 15 45 20.802 -13 54 16.51 25.5w 15KS174 568 C~2lVK 2016 02 12.61062 15 45 40.773 -13 54 10.96 24.6w 15KS174 568 C~2lVK 2016 04 03.54259 15 44 47.862 -13 41 54.73 25.1w 15KS174 568 C~2lVK 2016 04 03.55474 15 44 47.803 -13 41 54.42 24.9w 15KS174 568 C~2lVK 2016 04 08.59215 15 44 23.092 -13 39 53.59 25.1w 15KS174 568 C~2lVK 2016 04 29.47374 15 42 15.596 -13 31 03.03 24.9w 15KS174 568 C~2lVK 2016 05 04.40882 15 41 41.207 -13 28 57.49 24.9w 15KS174 568 C~2lVK 2016 05 30.48224 15 38 32.012 -13 19 04.50 24.7w 15KS174 568 C~2lVK 2016 07 04.28603 15 35 04.668 -13 12 25.36 24.8w 15KS174 568 C~2lVK 2016 07 05.37863 15 34 59.980 -13 12 22.91 25.1w 15KS174 568 C~2lVK 2017 05 21.53337 15 51 33.599 -14 15 11.61 25.0w 15KS174 568 C~2lVK 2017 08 19.27489 15 45 33.732 -14 12 13.67 15KS174 568 C~2lVK 2017 08 25.27821 15 45 46.106 -14 14 25.29 26.0w 15KS174 568 C~2lVK 2017 08 26.25868 15 45 48.642 -14 14 48.35 24.9w 15KS174 568 C~2lVK
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 0.0737 -466.02 0.13 317.74 -0.05
3 0.0794 -567.66 -0.06 339.11 -0.02
4 0.1392 -2120.32 -0.07 522.84 0.15
5 0.1393 -2124.24 -0.30 522.95 0.01
6 0.1557 -2675.37 0.03 556.67 0.14
7 0.2347 -5728.13 -0.01 596.95 0.00
8 0.2348 -5733.45 -0.10 596.88 0.07
9 0.2349 -5738.01 0.06 596.44 -0.25
10 0.2538 -6491.60 -0.04 574.67 -0.05
11 0.2539 -6496.72 -0.07 574.58 0.07
12 0.2541 -6501.09 0.06 574.23 -0.09
13 0.2595 -6714.82 -0.06 565.80 0.11
14 0.3222 -8945.83 0.09 397.57 -0.24
15 0.3223 -8949.51 -0.03 397.45 0.07
16 0.3305 -9194.52 -0.02 366.95 -0.05
17 0.3960 -10622.99 0.11 66.34 0.22
18 0.4016 -10693.49 0.16 36.86 -0.02
19 0.4043 -10724.24 0.02 22.78 0.03
20 0.9609 10057.44 0.06 -891.86 0.04
21 0.9609 10057.72 0.13 -891.97 -0.12
22 0.9773 10340.39 0.03 -820.68 0.07
23 1.1167 9420.66 -0.01 -277.65 -0.08
24 1.1168 9419.75 -0.03 -277.55 -0.06
25 1.1306 9040.81 -0.10 -241.72 -0.07
26 1.1877 7106.88 -0.01 -150.14 0.01
27 1.2012 6589.30 0.15 -143.32 -0.06
28 1.2726 3764.55 -0.03 -206.47 0.20
29 1.3679 727.92 -0.04 -530.03 0.04
30 1.3709 660.82 0.04 -543.86 -0.06
31 2.2474 15647.00 0.16 -904.57 -0.04
32 2.4931 10486.07 -0.19 -1899.94 -0.07
33 2.5096 10691.66 -0.05 -1987.65 0.05
34 2.5123 10732.91 -0.01 -2001.81 0.09
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.
15KS174 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 32.323 32.345 32.301 ecceobj 0.222 0.222 0.221 incobj 7.027 7.027 7.027 qmin 24.683 21.738 24.859 qmax 39.700 39.536 39.430 amean 32.094 29.824 32.172 amin 31.798 28.560 32.025 amax 32.360 32.345 32.300 emean 0.223 0.233 0.223 emin 0.216 0.217 0.221 emax 0.228 0.243 0.225 imean 5.353 3.378 5.455 imin 5.158 1.725 5.451 imax 5.451 5.451 5.462 excite_mean 0.242 0.241 0.242 fracstop 0.001 0.007 0.000 cjmean 2.942 2.942 2.942 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 89.5 151.4 87.5 kozaiamp 3.2 74.6 0.6