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: 15KU174
# Created Mon Apr 28 01:10:29 2025
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 3.24y
# First observation: 2014/05/30
# Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
0.000084 0.034583 -0.000021 -0.003497 0.027557 0.000000
# Chi-squared of fit: 7.41 DOF: 54 RMS: 0.09
# Min/Max residuals: -0.21 0.29
# Exact a, adot, b, bdot, g, gdot:
1.981651E-05 3.476845E-02 -1.830751E-06 -3.535122E-03 2.754492E-02 -3.207829E-03
# Covariance matrix:
2.1993E-13 -2.5500E-13 -1.0692E-14 2.1360E-14 -7.3175E-14 -1.8134E-12
-2.5500E-13 5.2165E-13 2.7346E-14 -5.6986E-14 1.0349E-13 4.6862E-12
-1.0692E-14 2.7346E-14 1.4245E-13 -7.7651E-14 6.0635E-15 2.7774E-13
2.1360E-14 -5.6986E-14 -7.7651E-14 6.7317E-14 -9.0270E-15 -5.8117E-13
-7.3175E-14 1.0349E-13 6.0635E-15 -9.0270E-15 1.5120E-13 9.6541E-13
-1.8134E-12 4.6862E-12 2.7774E-13 -5.8117E-13 9.6541E-13 4.7643E-11
# lat0 lon0 xBary yBary zBary JD0
7.276114 -127.321988 -0.282361 0.123501 -0.966854 2456807.886218
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 356.51003 +/- 0.008
Argument of Peri: 143.03177 +/- 0.032
Long of Asc Node: 103.22552 +/- 0.002
Inclination: 9.20253 +/- 0.000
Eccentricity: 0.53502526 +/- 0.0001
Semi-Major Axis: 79.38643139 +/- 0.0119
Time of Perihelion: 2459305.0912 +/- 5.8
Perihelion: 36.91268559 +/- 0.0080
Aphelion: 121.86017718 +/- 0.0192
Period (y) 707.3390 +/- 0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.20152115 +/- 0.0003
Ecliptic Y -29.58315222 +/- 0.0004
Ecliptic Z 4.59797786 +/- 0.0001
Ecliptic XDOT 0.00290775 +/- 0.0000
Ecliptic YDOT -0.00188277 +/- 0.0000
Ecliptic ZDOT -0.00038880 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.27213218 +/- 0.0004
Geocenter to KBO 36.30433861 +/- 0.0005
# Hcoef: 9.02
The following table shows the complete astrometric record for 15KU174. 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 (15KU174) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.38544 15 28 37.579 -11 23 43.99 24.4r 15KU174 568 C~2lVL 2014 06 01.31224 15 28 28.154 -11 23 19.48 24.8r 15KU174 568 C~2lVL 2014 06 01.35552 15 28 27.942 -11 23 18.94 24.6r 15KU174 568 C~2lVL 2014 06 01.39843 15 28 27.724 -11 23 18.69 24.7r 15KU174 568 C~2lVL 2014 06 22.30986 15 26 55.628 -11 20 17.08 25.0r 15KU174 568 C~2lVL 2014 06 22.35268 15 26 55.471 -11 20 17.03 24.7r 15KU174 568 C~2lVL 2015 02 25.61666 15 41 43.770 -12 29 26.37 24.9r 15KU174 568 C~2lVL 2015 03 19.62043 15 41 25.601 -12 25 03.70 24.9r 15KU174 568 C~2lVL 2015 03 22.53917 15 41 19.452 -12 24 19.01 24.8r 15KU174 568 C~2lVL 2015 04 13.55184 15 40 09.393 -12 17 57.54 24.9r 15KU174 568 C~2lVL 2015 04 13.59295 15 40 09.229 -12 17 56.78 24.5r 15KU174 568 C~2lVL 2015 04 18.55634 15 39 48.535 -12 16 24.59 24.2r 15KU174 568 C~2lVL 2015 05 21.32236 15 37 07.942 -12 06 50.35 24.4r 15KU174 568 C~2lVL 2015 05 21.36353 15 37 07.730 -12 06 49.66 25.1r 15KU174 568 C~2lVL 2015 05 21.40471 15 37 07.511 -12 06 49.33 24.5r 15KU174 568 C~2lVL 2015 05 25.47177 15 36 46.653 -12 05 49.84 24.6r 15KU174 568 C~2lVL 2015 06 20.36123 15 34 44.822 -12 01 24.46 24.4r 15KU174 568 C~2lVL 2015 07 11.29546 15 33 34.022 -12 00 48.76 24.4r 15KU174 568 C~2lVL 2015 07 18.36550 15 33 18.156 -12 01 17.71 24.3r 15KU174 568 C~2lVL 2016 02 12.61871 15 49 06.202 -13 09 30.63 25.1w 15KU174 568 C~2lVL 2016 04 03.55070 15 48 30.101 -13 00 24.16 24.9w 15KU174 568 C~2lVL 2016 04 08.60024 15 48 12.829 -12 58 58.98 24.8w 15KU174 568 C~2lVL 2016 04 29.50143 15 46 43.554 -12 52 52.34 24.9w 15KU174 568 C~2lVL 2016 05 04.47406 15 46 19.218 -12 51 26.46 24.8w 15KU174 568 C~2lVL 2016 05 30.45796 15 44 05.964 -12 44 55.84 24.7w 15KU174 568 C~2lVL 2016 07 04.29818 15 41 35.398 -12 40 59.61 24.8w 15KU174 568 C~2lVL 2016 07 05.36646 15 41 31.958 -12 40 59.23 24.8w 15KU174 568 C~2lVL 2017 03 28.60754 15 56 38.530 -13 40 51.15 25.5w 15KU174 568 C~2lVL 2017 08 19.27489 15 48 23.661 -13 26 39.46 25.2w 15KU174 568 C~2lVL 2017 08 26.26334 15 48 33.250 -13 28 41.92 25.7w 15KU174 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 0.03 0.00 -0.04
2 0.0053 -140.36 -0.06 -10.35 0.09
3 0.0054 -143.51 -0.03 -10.59 0.11
4 0.0055 -146.68 -0.03 -11.14 -0.18
5 0.0628 -1504.00 -0.09 -169.40 0.01
6 0.0629 -1506.25 0.11 -169.92 -0.10
7 0.7426 12160.86 -0.03 -1054.77 0.06
8 0.8028 11839.42 0.13 -861.52 -0.10
9 0.8108 11741.04 -0.12 -839.19 -0.04
10 0.8711 10650.29 -0.10 -709.85 0.10
11 0.8712 10647.77 -0.03 -709.68 0.12
12 0.8848 10330.46 0.01 -691.67 0.05
13 0.9745 7902.12 0.02 -692.88 0.08
14 0.9746 7898.93 0.05 -692.96 0.16
15 0.9747 7895.73 0.07 -693.40 -0.13
16 0.9859 7584.03 0.01 -708.69 -0.03
17 1.0567 5783.51 0.07 -879.73 0.00
18 1.1141 4766.20 0.02 -1095.72 0.03
19 1.1334 4547.23 0.02 -1180.12 -0.05
20 1.7063 19052.43 0.00 -1903.12 0.02
21 1.8458 18408.88 -0.05 -1489.26 -0.09
22 1.8596 18141.56 -0.05 -1463.79 -0.09
23 1.9168 16777.35 -0.02 -1405.41 -0.06
24 1.9304 16408.89 -0.05 -1403.60 -0.01
25 2.0016 14411.15 0.12 -1474.06 -0.07
26 2.0970 12204.61 0.05 -1758.69 -0.01
27 2.0999 12155.42 -0.03 -1770.13 0.05
28 2.8288 25988.40 0.13 -2264.28 0.29
29 3.2221 18679.59 -0.02 -3051.08 0.05
30 3.2413 18845.14 -0.13 -3138.93 -0.21
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.
15KU174 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 78.398 78.429 78.366 ecceobj 0.530 0.530 0.530 incobj 9.197 9.197 9.197 qmin 36.037 36.083 36.090 qmax 125.677 125.846 125.598 amean 79.521 79.518 79.483 amin 78.208 78.257 78.139 amax 81.281 81.463 81.323 emean 0.535 0.534 0.535 emin 0.524 0.523 0.524 emax 0.547 0.546 0.546 imean 7.637 7.591 7.514 imin 7.002 7.025 6.986 imax 8.254 8.200 8.244 excite_mean 0.551 0.551 0.550 fracstop 1.000 1.000 1.000 cjmean 3.101 3.102 3.101 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 202.1 207.2 210.3 kozaiamp 179.9 180.0 180.0