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: 15KJ174
# Created Sat Apr 20 01:17:22 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 8.22y
# First observation: 2015/02/25
# Last observation: 2023/05/17
# Chi-squared of fit: 10.18 DOF: 54 RMS: 0.10
# Min/Max residuals: -0.44 0.28
# Exact a, adot, b, bdot, g, gdot:
1.589473E-05 2.323386E-02 1.503383E-06 3.274229E-03 2.408429E-02 2.822967E-03
# Covariance matrix:
2.1158E-13 -6.6822E-14 -3.8079E-16 -9.5401E-15 1.0408E-13 -3.1436E-13
-6.6822E-14 1.1503E-13 -1.3238E-14 1.8530E-14 2.8199E-14 6.6287E-13
-3.8079E-16 -1.3238E-14 7.5632E-14 -1.7479E-14 -1.0647E-14 -8.3287E-14
-9.5401E-15 1.8530E-14 -1.7479E-14 1.2265E-14 4.3907E-15 1.1583E-13
1.0408E-13 2.8199E-14 -1.0647E-14 4.3907E-15 1.3046E-13 1.8516E-13
-3.1436E-13 6.6287E-13 -8.3287E-14 1.1583E-13 1.8516E-13 4.1456E-12
# lat0 lon0 xBary yBary zBary JD0
6.756890 -123.599798 0.971805 0.020342 -0.170613 2457079.117438
# Heliocentric elements and errors
Epoch: 2457078.5000 = 2015/02/25
Mean Anomaly: 74.12898 +/- 0.025
Argument of Peri: 314.25679 +/- 0.027
Long of Asc Node: 195.76042 +/- 0.001
Inclination: 10.55099 +/- 0.000
Eccentricity: 0.10040309 +/- 0.0001
Semi-Major Axis: 42.45951564 +/- 0.0030
Time of Perihelion: 2436269.7253 +/- 7.2
Perihelion: 38.19644921 +/- 0.0046
Aphelion: 46.72258208 +/- 0.0050
Period (y) 276.6755 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -23.72458620 +/- 0.0004
Ecliptic Y -33.94859369 +/- 0.0005
Ecliptic Z 4.88528735 +/- 0.0001
Ecliptic XDOT 0.00204419 +/- 0.0000
Ecliptic YDOT -0.00169618 +/- 0.0000
Ecliptic ZDOT 0.00040747 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.70400150 +/- 0.0005
Geocenter to KBO 41.52077878 +/- 0.0006
# Hcoef: 7.86
The following table shows the complete astrometric record for 15KJ174. 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 (15KJ174) followed by the observatory code and reference code for the source of the astrometry.
2015 02 25.61666 15 42 48.657 -12 46 18.49 24.4r 15KJ174 568 C~2lVJ 2015 03 22.53917 15 42 22.179 -12 40 00.10 23.9r 15KJ174 568 C~2lVJ 2015 04 13.55184 15 41 15.405 -12 32 45.82 15KJ174 568 C~2lVJ 2015 05 21.32236 15 38 26.050 -12 20 03.34 23.7r 15KJ174 568 C~2lVJ 2015 05 21.36353 15 38 25.853 -12 20 02.82 24.2r 15KJ174 568 C~2lVJ 2015 05 21.40471 15 38 25.654 -12 20 01.89 24.0r 15KJ174 568 C~2lVJ 2015 05 22.48134 15 38 20.499 -12 19 42.66 24.1r 15KJ174 568 C~2lVJ 2015 05 25.47177 15 38 06.223 -12 18 50.39 24.2r 15KJ174 568 C~2lVJ 2015 06 20.36123 15 36 12.051 -12 12 53.67 24.1r 15KJ174 568 C~2lVJ 2015 06 20.40209 15 36 11.890 -12 12 53.29 23.8r 15KJ174 568 C~2lVJ 2015 06 23.42230 15 36 00.390 -12 12 24.92 23.9r 15KJ174 568 C~2lVJ 2015 07 11.29546 15 35 04.157 -12 10 42.67 24.1r 15KJ174 568 C~2lVJ 2015 07 18.36550 15 34 48.359 -12 10 34.74 24.1r 15KJ174 568 C~2lVJ 2016 02 06.63317 15 47 54.516 -12 55 52.92 23.9w 15KJ174 568 C~2lVJ 2016 02 12.61871 15 48 05.649 -12 55 15.82 23.8w 15KJ174 568 C~2lVJ 2016 03 15.62688 15 48 05.472 -12 48 44.82 24.3w 15KJ174 568 C~2lVJ 2016 04 03.55069 15 47 21.160 -12 42 59.68 24.2w 15KJ174 568 C~2lVJ 2016 04 08.60024 15 47 04.672 -12 41 19.22 24.2w 15KJ174 568 C~2lVJ 2016 04 29.50143 15 45 40.846 -12 34 12.35 24.4w 15KJ174 568 C~2lVJ 2016 05 04.47406 15 45 18.210 -12 32 32.35 24.3w 15KJ174 568 C~2lVJ 2016 05 30.45796 15 43 14.783 -12 24 44.59 24.1w 15KJ174 568 C~2lVJ 2016 07 04.31032 15 40 54.517 -12 18 41.96 24.4w 15KJ174 568 C~2lVJ 2016 07 05.38268 15 40 51.261 -12 18 37.24 23.8w 15KJ174 568 C~2lVJ 2017 03 30.57730 15 53 05.586 -12 50 57.13 24.9w 15KJ174 568 C~2lVJ 2017 08 20.25685 15 45 27.387 -12 28 45.12 24.2w 15KJ174 568 C~2lVJ 2017 08 26.26800 15 45 34.030 -12 30 00.38 24.1w 15KJ174 568 C~2lVJ 2021 05 12.400240 16 12 23.556 -12 59 48.87 24.5G 15KJ174 G37 C~4pVr 2021 05 12.431840 16 12 23.425 -12 59 48.76 15KJ174 G37 C~4pVr 2023 05 17.353460 16 22 56.357 -13 07 10.51 24.4G 15KJ174 G37 C~6oDj 2023 05 17.406160 16 22 56.101 -13 07 09.92 15KJ174 G37 C~6oDj
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 -0.10 0.00 0.16
2 0.0682 0.00 -0.03 0.00 -0.03
3 0.1285 0.00 0.11 0.00 0.04
4 0.2319 0.00 -0.14 0.00 0.05
5 0.2320 0.00 -0.08 0.00 -0.17
6 0.2321 0.00 -0.05 0.00 0.02
7 0.2351 0.00 0.08 0.00 -0.00
8 0.2433 0.00 -0.01 0.00 0.04
9 0.3142 0.00 0.04 0.00 0.06
10 0.3143 0.00 0.06 0.00 0.03
11 0.3225 0.00 -0.00 0.00 0.02
12 0.3715 0.00 0.01 0.00 0.06
13 0.3908 0.00 0.13 0.00 0.00
14 0.9473 0.00 0.13 0.00 -0.09
15 0.9637 0.00 0.15 0.00 -0.01
16 1.0514 0.00 -0.05 0.00 0.11
17 1.1032 0.00 -0.07 0.00 -0.08
18 1.1170 0.00 0.02 0.00 -0.06
19 1.1742 0.00 -0.03 0.00 -0.09
20 1.1878 0.00 -0.05 0.00 -0.02
21 1.2590 0.00 -0.03 0.00 0.01
22 1.3544 0.00 -0.04 0.00 0.02
23 1.3573 0.00 0.07 0.00 -0.06
24 2.0916 0.00 -0.14 0.00 -0.06
25 2.4822 0.00 -0.08 0.00 0.12
26 2.4987 0.00 -0.03 0.00 0.10
27 6.2089 0.00 -0.07 0.00 -0.01
28 6.2089 0.00 0.21 0.00 -0.44
29 8.2210 0.00 0.01 0.00 0.28
30 8.2212 0.00 -0.07 0.00 0.05
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.
15KJ174 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 42.119 42.119 42.119 ecceobj 0.096 0.096 0.095 incobj 10.595 10.595 10.595 qmin 36.137 35.754 34.867 qmax 49.037 49.528 50.406 amean 42.328 42.328 42.328 amin 41.911 41.903 41.858 amax 42.811 42.808 42.825 emean 0.099 0.097 0.113 emin 0.049 0.045 0.049 emax 0.145 0.158 0.178 imean 11.023 10.943 10.634 imin 9.461 8.924 8.648 imax 12.276 12.157 12.009 excite_mean 0.216 0.214 0.219 fracstop 1.000 1.000 1.000 cjmean 3.027 3.028 3.025 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 269.5 275.6 263.9 kozaiamp 64.9 81.0 179.8