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 Thu Jul 3 01:10:38 2025
# Orbit generated from Bernstein formalism
# Fitting 38 observations of 38
# Arc: 3.16y
# First observation: 2014/05/30
# Last observation: 2017/07/28
Preliminary a, adot, b, bdot, g, gdot:
0.000179 0.022580 -0.000036 -0.003769 0.023003 0.000000
# Chi-squared of fit: 9.85 DOF: 70 RMS: 0.09
# Min/Max residuals: -0.38 0.30
# Exact a, adot, b, bdot, g, gdot:
1.584951E-05 2.307499E-02 -2.857698E-06 -3.858129E-03 2.342273E-02 5.255091E-03
# Covariance matrix:
1.8116E-13 -2.0290E-13 -9.9831E-15 2.2730E-14 -6.7852E-14 -2.1584E-12
-2.0290E-13 4.0149E-13 2.6341E-14 -6.0972E-14 1.5509E-13 5.7544E-12
-9.9831E-15 2.6341E-14 1.3531E-13 -8.1315E-14 1.4010E-14 4.4989E-13
2.2730E-14 -6.0972E-14 -8.1315E-14 7.3553E-14 -2.7947E-14 -1.0353E-12
-6.7852E-14 1.5509E-13 1.4010E-14 -2.7947E-14 1.9026E-13 2.7940E-12
-2.1584E-12 5.7544E-12 4.4989E-13 -1.0353E-12 2.7940E-12 9.7924E-11
# lat0 lon0 xBary yBary zBary JD0
7.513395 -125.485257 -0.251172 0.128615 -0.974764 2456807.897968
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 41.85009 +/- 0.018
Argument of Peri: 73.17786 +/- 0.034
Long of Asc Node: 92.13280 +/- 0.002
Inclination: 12.01102 +/- 0.000
Eccentricity: 0.27488882 +/- 0.0004
Semi-Major Axis: 51.90861451 +/- 0.0140
Time of Perihelion: 2440920.4643 +/- 1.9
Perihelion: 37.63951649 +/- 0.0248
Aphelion: 66.17771253 +/- 0.0288
Period (y) 373.9963 +/- 0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -24.93807853 +/- 0.0005
Ecliptic Y -35.41039474 +/- 0.0006
Ecliptic Z 5.58246508 +/- 0.0001
Ecliptic XDOT 0.00180324 +/- 0.0000
Ecliptic YDOT -0.00211324 +/- 0.0000
Ecliptic ZDOT -0.00036665 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.66884167 +/- 0.0006
Geocenter to KBO 42.69357819 +/- 0.0008
# 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
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 -0.06 0.00 0.05
2 0.0028 -69.41 -0.38 -5.05 0.01
3 0.0053 -127.70 -0.06 -9.47 -0.02
4 0.0054 -130.43 0.09 -9.68 -0.00
5 0.0055 -133.33 0.08 -9.97 -0.06
6 0.0629 -1390.67 0.30 -151.72 0.29
7 0.1367 -2448.23 0.07 -421.98 0.06
8 0.8029 8884.92 -0.01 -896.60 -0.11
9 0.8108 8795.11 -0.03 -877.92 -0.12
10 0.8711 7812.25 -0.07 -768.77 -0.05
11 0.8712 7809.94 -0.07 -768.69 -0.10
12 0.8848 7528.65 0.16 -753.59 -0.08
13 0.9745 5368.12 0.08 -757.38 0.07
14 0.9746 5365.15 -0.01 -757.56 0.03
15 0.9747 5362.31 0.03 -757.68 0.05
16 0.9777 5288.19 -0.03 -761.16 -0.08
17 0.9858 5083.58 -0.04 -771.43 -0.00
18 1.0567 3453.76 -0.00 -922.86 0.05
19 1.0568 3451.48 0.02 -923.28 -0.05
20 1.0651 3288.14 -0.07 -947.61 -0.03
21 1.1140 2493.79 -0.06 -1114.59 0.04
22 1.1141 2493.46 -0.03 -1114.68 0.06
23 1.1334 2272.98 0.01 -1189.79 -0.01
24 1.6899 13507.25 -0.01 -1980.51 -0.03
25 1.7063 13656.24 0.05 -1934.06 -0.05
26 1.7939 13601.23 0.01 -1695.21 0.12
27 1.8458 12941.30 0.04 -1588.47 -0.08
28 1.8596 12699.72 -0.04 -1567.17 -0.03
29 1.8622 12652.06 0.04 -1563.60 -0.06
30 1.9168 11485.23 0.00 -1519.12 -0.01
31 1.9304 11159.26 0.09 -1517.98 0.02
32 2.0015 9392.08 -0.03 -1580.55 -0.03
33 2.0970 7404.62 0.02 -1830.17 0.07
34 2.0970 7404.21 -0.03 -1830.36 -0.05
35 2.0999 7358.73 -0.06 -1840.39 0.01
36 2.0999 7358.45 0.00 -1840.45 0.02
37 2.8288 17817.72 -0.05 -2392.30 -0.14
38 3.1620 11291.97 0.03 -2841.61 0.24
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 51.456 51.495 51.417 ecceobj 0.269 0.270 0.267 incobj 12.006 12.006 12.006 qmin 37.142 37.092 37.175 qmax 67.421 67.478 67.332 amean 51.943 51.982 51.902 amin 51.433 51.464 51.379 amax 52.569 52.592 52.532 emean 0.270 0.271 0.269 emin 0.257 0.259 0.256 emax 0.284 0.284 0.282 imean 10.661 10.663 10.653 imin 10.308 10.312 10.271 imax 11.265 11.257 11.260 excite_mean 0.328 0.329 0.326 fracstop 1.000 1.000 1.000 cjmean 3.065 3.065 3.066 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 176.9 175.7 179.9 kozaiamp 180.0 180.0 180.0