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: 15KA176
# Created Wed May 8 01:17:11 2024
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 2.00y
# First observation: 2014/05/30
# Last observation: 2016/05/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000038 0.021010 -0.000001 0.000658 0.022444 0.000000
# Chi-squared of fit: 11.66 DOF: 50 RMS: 0.11
# Min/Max residuals: -0.33 0.24
# Exact a, adot, b, bdot, g, gdot:
1.458455E-05 2.093162E-02 1.334788E-07 6.594722E-04 2.274634E-02 -3.155823E-03
# Covariance matrix:
1.8045E-13 -2.2955E-13 8.2785E-17 -1.3847E-15 -2.4172E-14 -2.3676E-12
-2.2955E-13 6.3544E-13 2.6534E-16 7.3399E-15 1.8623E-13 1.1029E-11
8.2785E-17 2.6534E-16 1.5294E-13 -1.1347E-13 2.8092E-15 2.8771E-14
-1.3847E-15 7.3399E-15 -1.1347E-13 1.2864E-13 8.2723E-15 2.0697E-13
-2.4172E-14 1.8623E-13 2.8092E-15 8.2723E-15 4.1699E-13 7.0077E-12
-2.3676E-12 1.1029E-11 2.8771E-14 2.0697E-13 7.0077E-12 2.6501E-10
# lat0 lon0 xBary yBary zBary JD0
6.079514 -126.881600 -0.274797 0.103512 -0.971369 2456807.882338
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 271.76785 +/- 0.118
Argument of Peri: 178.09170 +/- 0.083
Long of Asc Node: 159.77988 +/- 0.009
Inclination: 6.19516 +/- 0.000
Eccentricity: 0.14170331 +/- 0.0007
Semi-Major Axis: 44.24945202 +/- 0.0113
Time of Perihelion: 2483150.7441 +/- 33.9
Perihelion: 37.97915810 +/- 0.0337
Aphelion: 50.51974593 +/- 0.0348
Period (y) 294.3541 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -26.60446042 +/- 0.0007
Ecliptic Y -35.91220004 +/- 0.0010
Ecliptic Z 4.65613566 +/- 0.0001
Ecliptic XDOT 0.00224171 +/- 0.0000
Ecliptic YDOT -0.00120686 +/- 0.0000
Ecliptic ZDOT 0.00003883 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.93509792 +/- 0.0009
Geocenter to KBO 43.96312498 +/- 0.0012
# Hcoef: 8.49
The following table shows the complete astrometric record for 15KA176. 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 (15KA176) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.38156 15 29 09.590 -12 39 46.41 25.4r 15KA176 568 C~2nvj 2014 05 31.42022 15 29 05.080 -12 39 31.99 25.1r 15KA176 568 C~2nvj 2014 06 01.30833 15 29 01.261 -12 39 19.54 24.6r 15KA176 568 C~2nvj 2014 06 01.35165 15 29 01.075 -12 39 18.91 24.9r 15KA176 568 C~2nvj 2014 06 01.39455 15 29 00.909 -12 39 18.39 24.7r 15KA176 568 C~2nvj 2014 06 22.30598 15 27 38.942 -12 35 28.88 24.5r 15KA176 568 C~2nvj 2014 06 22.34880 15 27 38.785 -12 35 28.44 24.5r 15KA176 568 C~2nvj 2014 07 19.32186 15 26 29.073 -12 33 54.63 24.9r 15KA176 568 C~2nvj 2015 02 23.63194 15 38 53.973 -13 19 51.54 25.0r 15KA176 568 C~2nvj 2015 03 22.51359 15 38 26.119 -13 14 31.44 25.6r 15KA176 568 C~2nvj 2015 04 12.50860 15 37 25.035 -13 08 43.40 24.7r 15KA176 568 C~2nvj 2015 04 18.53176 15 37 02.644 -13 06 55.27 25.1r 15KA176 568 C~2nvj 2015 05 17.40428 15 34 58.350 -12 58 26.60 25.2r 15KA176 568 C~2nvj 2015 05 17.44599 15 34 58.136 -12 58 25.91 24.6r 15KA176 568 C~2nvj 2015 05 24.38965 15 34 26.802 -12 56 36.16 24.7r 15KA176 568 C~2nvj 2015 05 24.43575 15 34 26.581 -12 56 35.40 25.0r 15KA176 568 C~2nvj 2015 05 24.47682 15 34 26.389 -12 56 34.79 24.9r 15KA176 568 C~2nvj 2015 05 26.46493 15 34 17.487 -12 56 04.87 24.7r 15KA176 568 C~2nvj 2015 06 18.36386 15 32 42.147 -12 51 25.20 24.7r 15KA176 568 C~2nvj 2015 06 18.40481 15 32 41.988 -12 51 24.65 25.3r 15KA176 568 C~2nvj 2015 06 21.37945 15 32 31.086 -12 50 58.83 25.0r 15KA176 568 C~2nvj 2015 07 18.33993 15 31 16.686 -12 49 11.41 24.9r 15KA176 568 C~2nvj 2016 02 12.60657 15 43 33.076 -13 35 32.82 25.3w 15KA176 568 C~2nvj 2016 03 15.60417 15 43 28.142 -13 30 38.21 26.0w 15KA176 568 C~2nvj 2016 03 15.61316 15 43 28.121 -13 30 38.17 25.7w 15KA176 568 C~2nvj 2016 04 03.54259 15 42 44.080 -13 25 51.72 24.9w 15KA176 568 C~2nvj 2016 04 08.59215 15 42 28.022 -13 24 26.96 25.1w 15KA176 568 C~2nvj 2016 05 30.48224 15 38 48.630 -13 10 01.69 25.1w 15KA176 568 C~2nvj
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 0.07
2 0.0028 -67.53 -0.07 -2.17 -0.13
3 0.0053 -124.77 -0.14 -3.78 0.03
4 0.0054 -127.56 -0.10 -3.84 0.08
5 0.0055 -130.04 0.22 -3.93 0.09
6 0.0628 -1349.48 0.04 -75.93 -0.07
7 0.0629 -1351.82 -0.06 -76.06 0.01
8 0.1367 -2364.10 0.07 -236.86 0.07
9 0.7372 8874.20 -0.33 -284.34 0.01
10 0.8108 8402.76 0.05 -68.88 -0.06
11 0.8682 7452.30 0.06 58.53 -0.30
12 0.8847 7108.48 0.17 86.06 0.01
13 0.9638 5221.59 0.20 147.40 -0.02
14 0.9639 5218.39 -0.11 147.32 -0.09
15 0.9829 4747.12 0.24 144.18 -0.05
16 0.9830 4743.80 0.08 144.14 -0.03
17 0.9831 4740.93 0.02 144.06 -0.07
18 0.9886 4607.34 -0.06 141.90 -0.02
19 1.0513 3186.46 0.04 77.90 0.07
20 1.0514 3184.07 -0.04 77.87 0.22
21 1.0595 3023.09 -0.01 64.43 -0.03
22 1.1334 1941.18 -0.23 -94.82 0.15
23 1.7063 13064.93 0.15 -250.62 -0.01
24 1.7939 12926.35 -0.01 19.95 0.05
25 1.7939 12926.04 -0.08 19.92 -0.05
26 1.8458 12232.19 -0.02 150.23 0.20
27 1.8596 11983.78 -0.02 178.40 -0.06
28 2.0016 8659.10 -0.06 271.05 -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.
15KA176 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.042 44.072 44.012 ecceobj 0.147 0.148 0.145 incobj 6.206 6.206 6.206 qmin 36.666 36.509 36.824 qmax 52.418 52.530 52.123 amean 44.345 44.375 44.318 amin 43.980 43.985 43.929 amax 44.784 44.817 44.746 emean 0.151 0.154 0.148 emin 0.131 0.133 0.130 emax 0.171 0.174 0.167 imean 6.507 6.565 6.464 imin 5.108 5.097 5.116 imax 7.793 7.912 7.611 excite_mean 0.189 0.192 0.186 fracstop 1.000 1.000 1.000 cjmean 3.062 3.061 3.063 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 180.4 179.6 181.5 kozaiamp 180.0 179.9 179.9