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: 15KA174
# Created Thu Apr 25 01:17:13 2024
# Orbit generated from Bernstein formalism
# Fitting 43 observations of 43
# Arc: 3.24y
# First observation: 2014/05/29
# Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
0.000264 0.021224 -0.000076 -0.004450 0.023181 0.000000
# Chi-squared of fit: 8.97 DOF: 80 RMS: 0.08
# Min/Max residuals: -0.22 0.27
# Exact a, adot, b, bdot, g, gdot:
1.438966E-05 2.170728E-02 -2.938894E-06 -4.575772E-03 2.344652E-02 2.576631E-03
# Covariance matrix:
2.1089E-13 -2.5838E-13 -2.7169E-14 4.8981E-14 -1.0066E-13 -3.2210E-12
-2.5838E-13 4.9164E-13 6.2829E-14 -1.1458E-13 1.7255E-13 7.4422E-12
-2.7169E-14 6.2829E-14 1.2653E-13 -7.9383E-14 2.2761E-14 1.0578E-12
4.8981E-14 -1.1458E-13 -7.9383E-14 7.7914E-14 -3.9588E-14 -1.9335E-12
-1.0066E-13 1.7255E-13 2.2761E-14 -3.9588E-14 1.5067E-13 2.7059E-12
-3.2210E-12 7.4422E-12 1.0578E-12 -1.9335E-12 2.7059E-12 1.2528E-10
# lat0 lon0 xBary yBary zBary JD0
6.836634 -128.497443 -0.285611 0.115945 -0.966622 2456806.863358
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 82.04175 +/- 0.079
Argument of Peri: 54.14352 +/- 0.041
Long of Asc Node: 80.66556 +/- 0.001
Inclination: 13.67755 +/- 0.001
Eccentricity: 0.12462300 +/- 0.0005
Semi-Major Axis: 43.69341168 +/- 0.0065
Time of Perihelion: 2432759.3752 +/- 22.6
Perihelion: 38.24820769 +/- 0.0222
Aphelion: 49.13861568 +/- 0.0227
Period (y) 288.8232 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -26.74399057 +/- 0.0004
Ecliptic Y -34.08057641 +/- 0.0006
Ecliptic Z 5.07697031 +/- 0.0001
Ecliptic XDOT 0.00175299 +/- 0.0000
Ecliptic YDOT -0.00186505 +/- 0.0000
Ecliptic ZDOT -0.00049457 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.61768389 +/- 0.0005
Geocenter to KBO 42.65026109 +/- 0.0007
# Hcoef: 7.60
The following table shows the complete astrometric record for 15KA174. 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 (15KA174) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.36258 15 23 34.096 -11 31 48.87 23.8r 15KA174 568 C~2lVI 2014 05 29.40143 15 23 33.916 -11 31 48.38 23.8r 15KA174 568 C~2lVI 2014 05 29.44026 15 23 33.741 -11 31 47.87 23.5r 15KA174 568 C~2lVI 2014 05 30.47018 15 23 29.125 -11 31 35.87 23.8r 15KA174 568 C~2lVI 2014 06 21.36572 15 22 00.266 -11 28 32.51 23.8r 15KA174 568 C~2lVI 2014 06 21.40460 15 22 00.121 -11 28 32.35 24.0r 15KA174 568 C~2lVI 2015 02 23.64434 15 33 20.096 -12 27 39.54 24.1r 15KA174 568 C~2lVI 2015 03 19.58718 15 32 53.578 -12 23 33.78 23.9r 15KA174 568 C~2lVI 2015 03 21.64578 15 32 49.007 -12 23 06.39 24.0r 15KA174 568 C~2lVI 2015 04 12.50451 15 31 41.575 -12 17 34.91 23.9r 15KA174 568 C~2lVI 2015 04 12.54547 15 31 41.426 -12 17 34.12 23.8r 15KA174 568 C~2lVI 2015 04 18.52716 15 31 17.982 -12 15 55.99 24.1r 15KA174 568 C~2lVI 2015 05 17.40013 15 29 08.762 -12 08 20.04 24.2r 15KA174 568 C~2lVI 2015 05 17.44183 15 29 08.570 -12 08 19.61 24.2r 15KA174 568 C~2lVI 2015 05 17.49383 15 29 08.328 -12 08 18.42 23.3r 15KA174 568 C~2lVI 2015 05 17.51894 15 29 08.192 -12 08 18.29 23.5r 15KA174 568 C~2lVI 2015 05 24.38557 15 28 36.300 -12 06 45.14 23.8r 15KA174 568 C~2lVI 2015 05 24.43166 15 28 36.082 -12 06 44.51 23.9r 15KA174 568 C~2lVI 2015 05 24.47270 15 28 35.891 -12 06 43.96 23.9r 15KA174 568 C~2lVI 2015 05 26.46061 15 28 26.754 -12 06 18.87 23.9r 15KA174 568 C~2lVI 2015 06 18.35975 15 26 49.509 -12 02 40.70 24.0r 15KA174 568 C~2lVI 2015 06 18.40073 15 26 49.355 -12 02 40.43 23.9r 15KA174 568 C~2lVI 2015 06 21.37538 15 26 38.310 -12 02 23.38 24.0r 15KA174 568 C~2lVI 2015 06 21.39181 15 26 38.255 -12 02 23.27 23.9r 15KA174 568 C~2lVI 2015 07 18.33583 15 25 23.913 -12 02 07.92 24.1r 15KA174 568 C~2lVI 2015 08 11.33392 15 25 05.671 -12 05 35.59 23.8r 15KA174 568 C~2lVI 2016 02 05.63894 15 37 36.339 -13 01 03.42 24.5w 15KA174 568 C~2lVI 2016 02 11.65084 15 37 45.488 -13 00 56.79 24.5w 15KA174 568 C~2lVI 2016 03 15.58199 15 37 35.702 -12 56 58.54 24.4w 15KA174 568 C~2lVI 2016 03 15.59592 15 37 35.681 -12 56 58.39 24.2w 15KA174 568 C~2lVI 2016 03 17.60128 15 37 31.923 -12 56 34.65 24.7w 15KA174 568 C~2lVI 2016 04 03.52641 15 36 47.801 -12 52 44.51 24.2w 15KA174 568 C~2lVI 2016 04 08.57595 15 36 30.748 -12 51 28.17 24.4w 15KA174 568 C~2lVI 2016 04 29.46161 15 35 06.410 -12 45 59.37 24.1w 15KA174 568 C~2lVI 2016 05 04.39669 15 34 44.205 -12 44 42.78 24.2w 15KA174 568 C~2lVI 2016 05 30.48629 15 32 43.497 -12 38 47.46 24.1w 15KA174 568 C~2lVI 2016 07 03.36242 15 30 33.316 -12 35 03.62 24.6w 15KA174 568 C~2lVI 2016 07 04.27794 15 30 30.660 -12 35 02.49 24.4w 15KA174 568 C~2lVI 2016 07 05.34622 15 30 27.639 -12 35 01.60 24.5w 15KA174 568 C~2lVI 2017 06 26.27819 15 35 33.543 -13 08 17.46 24.2w 15KA174 568 C~2lVI 2017 08 20.27119 15 34 15.951 -13 13 01.18 24.3w 15KA174 568 C~2lVI 2017 08 23.25675 15 34 19.121 -13 13 44.87 24.3w 15KA174 568 C~2lVI 2017 08 24.24127 15 34 20.347 -13 13 59.93 24.3w 15KA174 568 C~2lVI
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 0.05 0.00 -0.03
2 0.0001 -2.68 0.01 -0.19 -0.01
3 0.0002 -5.30 0.03 -0.35 0.05
4 0.0030 -73.97 -0.05 -5.89 -0.00
5 0.0630 -1383.95 -0.01 -159.49 -0.04
6 0.0631 -1386.05 -0.05 -159.87 -0.09
7 0.7400 9166.95 0.06 -1109.93 -0.06
8 0.8055 8729.39 -0.19 -966.34 0.11
9 0.8112 8657.62 0.12 -956.15 0.04
10 0.8710 7616.77 -0.11 -876.82 -0.12
11 0.8711 7614.45 -0.01 -876.60 0.03
12 0.8875 7256.79 -0.11 -865.90 0.00
13 0.9666 5306.52 -0.04 -891.76 -0.05
14 0.9667 5303.69 0.09 -892.04 -0.19
15 0.9668 5299.95 0.05 -891.77 0.27
16 0.9669 5297.98 -0.13 -892.13 -0.02
17 0.9857 4821.50 0.02 -917.93 0.00
18 0.9858 4818.25 -0.01 -918.11 0.03
19 0.9859 4815.39 0.00 -918.27 0.05
20 0.9914 4679.28 -0.04 -927.25 -0.05
21 1.0541 3242.97 0.06 -1071.38 0.01
22 1.0542 3240.71 0.12 -1071.68 0.04
23 1.0623 3079.53 -0.07 -1095.68 -0.01
24 1.0624 3078.72 0.00 -1095.77 0.03
25 1.1361 2018.89 0.07 -1354.20 0.03
26 1.2018 1812.05 -0.01 -1622.46 -0.08
27 1.6900 13302.32 0.00 -2148.99 -0.03
28 1.7065 13431.07 0.01 -2110.42 0.04
29 1.7966 13234.13 0.01 -1912.98 0.12
30 1.7967 13233.79 0.09 -1912.91 0.13
31 1.8022 13174.52 0.01 -1903.02 0.02
32 1.8485 12490.32 0.04 -1834.47 -0.01
33 1.8623 12228.95 -0.02 -1820.39 0.02
34 1.9195 10948.39 -0.09 -1799.27 0.07
35 1.9330 10613.74 0.07 -1803.71 0.03
36 2.0044 8809.99 0.02 -1889.27 -0.19
37 2.0972 6904.99 0.19 -2140.09 -0.05
38 2.0997 6866.98 -0.03 -2148.58 -0.02
39 2.1026 6823.85 -0.00 -2158.63 0.02
40 3.0771 11659.82 0.14 -3003.68 0.09
41 3.2277 10626.28 -0.10 -3554.18 -0.22
42 3.2358 10681.97 -0.13 -3585.39 0.01
43 3.2385 10703.05 -0.06 -3595.67 0.04
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.
15KA174 quality flag:2 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 43.408 43.427 43.389 ecceobj 0.121 0.122 0.120 incobj 13.681 13.681 13.681 qmin 34.157 34.337 35.569 qmax 53.677 53.587 52.309 amean 43.727 43.727 43.727 amin 43.328 43.317 43.316 amax 44.198 44.210 44.170 emean 0.145 0.143 0.114 emin 0.051 0.069 0.058 emax 0.216 0.213 0.185 imean 11.380 10.942 11.876 imin 8.514 7.465 9.146 imax 14.317 13.454 13.652 excite_mean 0.250 0.242 0.239 fracstop 1.000 1.000 1.000 cjmean 3.023 3.028 3.030 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 91.9 94.0 120.5 kozaiamp 65.3 50.2 180.0