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: 15KX174
# Created Sat Jul 12 01:10:45 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 41 observations of 41
# Arc: 11.07y
# First observation: 2014/05/30
# Last observation: 2025/06/25
# Chi-squared of fit: 143.47 DOF: 76 RMS: 0.33
# Min/Max residuals: -1.51 1.06
# Exact a, adot, b, bdot, g, gdot:
1.583694E-05 2.307506E-02 -2.861858E-06 -3.858132E-03 2.342273E-02 5.255131E-03
# Covariance matrix:
1.4585E-13 -1.0165E-13 -1.5766E-14 1.5950E-14 -1.5706E-14 -3.7363E-13
-1.0165E-13 1.0174E-13 1.6270E-14 -1.6970E-14 -1.8055E-15 3.9746E-13
-1.5766E-14 1.6270E-14 5.9032E-14 -1.3023E-14 1.7398E-15 6.6660E-14
1.5950E-14 -1.6970E-14 -1.3023E-14 8.3093E-15 1.2421E-15 -7.0132E-14
-1.5706E-14 -1.8055E-15 1.7398E-15 1.2421E-15 1.0750E-13 -2.8623E-14
-3.7363E-13 3.9746E-13 6.6660E-14 -7.0132E-14 -2.8623E-14 1.6425E-12
# lat0 lon0 xBary yBary zBary JD0
7.513395 -125.485257 -0.251172 0.128615 -0.974764 2456807.897968
# Heliocentric elements and errors
Epoch: 2456808.5000 = 2014/05/31
Mean Anomaly: 41.87004 +/- 0.008
Argument of Peri: 73.17879 +/- 0.008
Long of Asc Node: 92.13285 +/- 0.001
Inclination: 12.01100 +/- 0.000
Eccentricity: 0.27489342 +/- 0.0001
Semi-Major Axis: 51.90904194 +/- 0.0052
Time of Perihelion: 2440920.6984 +/- 3.8
Perihelion: 37.63958803 +/- 0.0055
Aphelion: 66.17849585 +/- 0.0077
Period (y) 374.0010 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -24.93807884 +/- 0.0003
Ecliptic Y -35.41039426 +/- 0.0005
Ecliptic Z 5.58246488 +/- 0.0001
Ecliptic XDOT 0.00180324 +/- 0.0000
Ecliptic YDOT -0.00211325 +/- 0.0000
Ecliptic ZDOT -0.00036665 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.66868487 +/- 0.0004
Geocenter to KBO 42.69346499 +/- 0.0006
# Hcoef: 7.33
The following table shows the complete astrometric record for 15KX174. 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 (15KX174) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.39719 15 36 04.546 -11 36 14.55 23.6r 15KX174 568 C~2lVL 2014 05 31.43578 15 35 59.874 -11 36 03.09 22.2r 15KX174 568 C~2lVL 2014 06 01.32413 15 35 55.948 -11 35 53.64 23.9r 15KX174 568 C~2lVL 2014 06 01.36716 15 35 55.764 -11 35 53.20 23.8r 15KX174 568 C~2lVL 2014 06 01.41010 15 35 55.568 -11 35 52.80 23.9r 15KX174 568 C~2lVL 2014 06 22.36436 15 34 30.152 -11 33 13.23 21.7r 15KX174 568 C~2lVL 2014 07 19.33752 15 33 15.887 -11 33 24.48 24.0r 15KX174 568 C~2lVL 2015 03 19.64496 15 45 39.172 -12 25 02.23 23.9r 15KX174 568 C~2lVL 2015 03 22.54324 15 45 33.502 -12 24 23.69 24.1r 15KX174 568 C~2lVL 2015 04 13.57652 15 44 29.989 -12 18 54.01 23.9r 15KX174 568 C~2lVL 2015 04 13.61766 15 44 29.837 -12 18 53.41 23.9r 15KX174 568 C~2lVL 2015 04 18.56046 15 44 11.412 -12 17 34.56 23.8r 15KX174 568 C~2lVL 2015 05 21.32647 15 41 48.055 -12 09 22.67 23.6r 15KX174 568 C~2lVL 2015 05 21.36772 15 41 47.855 -12 09 22.16 23.6r 15KX174 568 C~2lVL 2015 05 21.40894 15 41 47.665 -12 09 21.62 23.6r 15KX174 568 C~2lVL 2015 05 22.48541 15 41 42.695 -12 09 07.92 23.8r 15KX174 568 C~2lVL 2015 05 25.47599 15 41 28.966 -12 08 30.70 23.8r 15KX174 568 C~2lVL 2015 06 20.36530 15 39 38.519 -12 04 40.39 23.9r 15KX174 568 C~2lVL 2015 06 20.40617 15 39 38.361 -12 04 40.27 24.0r 15KX174 568 C~2lVL 2015 06 23.42643 15 39 27.148 -12 04 25.93 23.8r 15KX174 568 C~2lVL 2015 07 11.29956 15 38 31.843 -12 04 03.12 23.9r 15KX174 568 C~2lVL 2015 07 11.30916 15 38 31.820 -12 04 03.13 23.8r 15KX174 568 C~2lVL 2015 07 18.36957 15 38 16.010 -12 04 24.64 23.8r 15KX174 568 C~2lVL 2016 02 06.63317 15 50 29.402 -12 59 52.66 24.3w 15KX174 568 C~2lVL 2016 02 12.61871 15 50 40.004 -12 59 40.45 24.2w 15KX174 568 C~2lVL 2016 03 15.62688 15 50 39.984 -12 55 35.96 23.8w 15KX174 568 C~2lVL 2016 04 03.57496 15 49 57.792 -12 51 25.82 24.2w 15KX174 568 C~2lVL 2016 04 08.62452 15 49 42.077 -12 50 11.40 24.2w 15KX174 568 C~2lVL 2016 04 09.56848 15 49 38.967 -12 49 57.33 23.9w 15KX174 568 C~2lVL 2016 04 29.50952 15 48 22.173 -12 44 53.70 24.0w 15KX174 568 C~2lVL 2016 05 04.48214 15 48 00.546 -12 43 39.57 24.1w 15KX174 568 C~2lVL 2016 05 30.45796 15 46 02.236 -12 38 02.48 24.1w 15KX174 568 C~2lVL 2016 07 04.31032 15 43 46.372 -12 34 33.52 23.9w 15KX174 568 C~2lVL 2016 07 04.31842 15 43 46.342 -12 34 33.62 24.1w 15KX174 568 C~2lVL 2016 07 05.38268 15 43 43.165 -12 34 32.98 24.1w 15KX174 568 C~2lVL 2016 07 05.39078 15 43 43.145 -12 34 32.98 24.0w 15KX174 568 C~2lVL 2017 03 28.60754 15 55 09.429 -13 22 16.06 23.6w 15KX174 568 C~2lVL 2017 07 28.31662 15 47 48.997 -13 05 36.85 15KX174 568 C~2lVL 2025 06 25.19889 16 27 34.603 -16 40 27.91 23.9G 15KX174 G37 2025 06 25.24392 16 27 34.407 -16 40 28.07 15KX174 G37 2025 06 25.28866 16 27 34.238 -16 40 27.69 15KX174 G37
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 -0.04 0.00 0.06
2 0.0028 0.00 -0.37 0.00 0.10
3 0.0053 0.00 -0.07 0.00 -0.01
4 0.0054 0.00 0.09 0.00 -0.02
5 0.0055 0.00 0.07 0.00 -0.08
6 0.0629 0.00 0.37 0.00 0.21
7 0.1367 0.00 0.08 0.00 0.04
8 0.8029 0.00 -0.03 0.00 -0.11
9 0.8108 0.00 -0.06 0.00 -0.11
10 0.8711 0.00 -0.08 0.00 -0.03
11 0.8712 0.00 -0.09 0.00 -0.09
12 0.8848 0.00 0.14 0.00 -0.11
13 0.9745 0.00 0.09 0.00 0.05
14 0.9746 0.00 -0.01 0.00 0.03
15 0.9747 0.00 0.04 0.00 0.04
16 0.9777 0.00 -0.05 0.00 -0.07
17 0.9858 0.00 -0.04 0.00 0.01
18 1.0567 0.00 0.01 0.00 0.05
19 1.0568 0.00 0.01 0.00 -0.05
20 1.0651 0.00 -0.07 0.00 -0.01
21 1.1140 0.00 -0.05 0.00 0.06
22 1.1141 0.00 -0.02 0.00 0.06
23 1.1334 0.00 0.01 0.00 -0.01
24 1.6899 0.00 -0.02 0.00 -0.02
25 1.7063 0.00 0.03 0.00 -0.06
26 1.7939 0.00 0.03 0.00 0.11
27 1.8458 0.00 0.02 0.00 -0.08
28 1.8596 0.00 -0.05 0.00 -0.02
29 1.8622 0.00 0.02 0.00 -0.06
30 1.9168 0.00 -0.00 0.00 -0.01
31 1.9304 0.00 0.09 0.00 0.00
32 2.0015 0.00 -0.04 0.00 -0.02
33 2.0970 0.00 0.03 0.00 0.07
34 2.0970 0.00 -0.05 0.00 -0.03
35 2.0999 0.00 -0.07 0.00 0.03
36 2.0999 0.00 0.00 0.00 0.02
37 2.8288 0.00 -0.08 0.00 -0.12
38 3.1620 0.00 0.07 0.00 0.23
39 11.0713 0.00 -1.34 0.00 1.06
40 11.0714 0.00 -1.51 0.00 0.72
41 11.0716 0.00 -1.29 0.00 0.92
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.
15KX174 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.453 51.454 51.453 ecceobj 0.269 0.269 0.269 incobj 12.006 12.006 12.006 qmin 37.137 37.154 37.123 qmax 67.474 67.383 67.430 amean 51.940 51.940 51.939 amin 51.420 51.419 51.414 amax 52.572 52.576 52.556 emean 0.270 0.270 0.270 emin 0.258 0.258 0.257 emax 0.284 0.283 0.283 imean 10.660 10.660 10.660 imin 10.304 10.307 10.304 imax 11.272 11.266 11.273 excite_mean 0.328 0.328 0.328 fracstop 1.000 1.000 1.000 cjmean 3.065 3.065 3.065 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 176.9 177.0 177.0 kozaiamp 179.9 179.9 180.0