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: 15KG173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 39 observations of 39
# Arc: 3.24y
# First observation: 2014/05/30
# Last observation: 2017/08/27
Preliminary a, adot, b, bdot, g, gdot:
0.000177 0.044288 0.000009 0.002636 0.035069 0.000000
# Chi-squared of fit: 7.12 DOF: 72 RMS: 0.08
# Min/Max residuals: -0.23 0.21
# Exact a, adot, b, bdot, g, gdot:
1.978794E-05 4.443717E-02 1.346059E-06 2.625200E-03 3.487105E-02 -6.531632E-03
# Covariance matrix:
1.3629E-13 -1.5983E-13 1.1734E-15 -5.0360E-15 -3.9911E-14 -8.7340E-13
-1.5983E-13 3.5396E-13 -3.2643E-15 1.3255E-14 7.7864E-14 2.4586E-12
1.1734E-15 -3.2643E-15 9.5026E-14 -4.8128E-14 -8.9414E-16 -2.5556E-14
-5.0360E-15 1.3255E-14 -4.8128E-14 4.0774E-14 5.9139E-15 1.0325E-13
-3.9911E-14 7.7864E-14 -8.9414E-16 5.9139E-15 1.2163E-13 5.8643E-13
-8.7340E-13 2.4586E-12 -2.5556E-14 1.0325E-13 5.8643E-13 1.9268E-11
# lat0 lon0 xBary yBary zBary JD0
6.566008 -126.361983 -0.265926 0.112036 -0.972891 2456807.882338
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 339.68164 +/- 0.011
Argument of Peri: 99.30087 +/- 0.022
Long of Asc Node: 171.55369 +/- 0.002
Inclination: 7.14430 +/- 0.000
Eccentricity: 0.28058234 +/- 0.0001
Semi-Major Axis: 39.44200785 +/- 0.0025
Time of Perihelion: 2461906.9975 +/- 2.7
Perihelion: 28.37527683 +/- 0.0032
Aphelion: 50.50873886 +/- 0.0041
Period (y) 247.7118 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.25853198 +/- 0.0002
Ecliptic Y -23.88662953 +/- 0.0002
Ecliptic Z 3.27925890 +/- 0.0000
Ecliptic XDOT 0.00312035 +/- 0.0000
Ecliptic YDOT -0.00164293 +/- 0.0000
Ecliptic ZDOT 0.00014625 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.65099552 +/- 0.0002
Geocenter to KBO 28.67708413 +/- 0.0003
# Hcoef: 9.51
The following table shows the complete astrometric record for 15KG173. 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 (15KG173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.38156 15 31 41.802 -12 18 59.41 23.9r 15KG173 568 C~2lVF 2014 05 30.43011 15 31 41.492 -12 18 58.44 24.5r 15KG173 568 C~2lVF 2014 05 30.43466 15 31 41.463 -12 18 58.17 25.2r 15KG173 568 C~2lVF 2014 05 31.42022 15 31 35.383 -12 18 38.28 24.7r 15KG173 568 C~2lVF 2014 06 01.30833 15 31 29.926 -12 18 20.37 24.4r 15KG173 568 C~2lVF 2014 06 01.35165 15 31 29.647 -12 18 19.62 24.2r 15KG173 568 C~2lVF 2014 06 01.39455 15 31 29.391 -12 18 18.88 24.0r 15KG173 568 C~2lVF 2014 06 22.30598 15 29 33.178 -12 12 54.54 15KG173 568 C~2lVF 2014 06 22.34880 15 29 32.997 -12 12 54.07 24.0r 15KG173 568 C~2lVF 2014 07 19.32186 15 27 58.073 -12 11 10.83 24.9r 15KG173 568 C~2lVF 2015 02 25.63010 15 48 34.840 -13 22 01.76 24.4r 15KG173 568 C~2lVF 2015 03 19.62451 15 48 18.558 -13 15 45.52 24.5r 15KG173 568 C~2lVF 2015 03 22.54324 15 48 11.623 -13 14 43.05 24.5r 15KG173 568 C~2lVF 2015 04 13.55598 15 46 48.106 -13 05 50.37 24.2r 15KG173 568 C~2lVF 2015 04 13.59705 15 46 47.894 -13 05 49.26 23.9r 15KG173 568 C~2lVF 2015 04 18.56046 15 46 22.588 -13 03 39.76 23.9r 15KG173 568 C~2lVF 2015 05 21.32647 15 43 02.368 -12 49 52.09 24.1r 15KG173 568 C~2lVF 2015 05 21.36772 15 43 02.098 -12 49 51.16 24.3r 15KG173 568 C~2lVF 2015 05 21.40894 15 43 01.821 -12 49 50.19 24.0r 15KG173 568 C~2lVF 2015 05 22.48541 15 42 54.841 -12 49 26.09 24.2r 15KG173 568 C~2lVF 2015 06 20.36530 15 40 00.756 -12 41 00.90 24.1r 15KG173 568 C~2lVF 2015 06 20.40617 15 40 00.538 -12 41 00.42 24.3r 15KG173 568 C~2lVF 2015 06 23.42643 15 39 45.022 -12 40 27.14 24.5r 15KG173 568 C~2lVF 2015 07 11.29956 15 38 29.924 -12 38 41.02 24.1r 15KG173 568 C~2lVF 2015 07 11.30916 15 38 29.892 -12 38 41.01 24.3r 15KG173 568 C~2lVF 2015 07 18.36957 15 38 09.356 -12 38 43.83 24.0r 15KG173 568 C~2lVF 2016 04 03.57902 15 57 56.833 -13 35 07.22 22.9w 15KG173 568 C~2lVF 2016 04 08.62857 15 57 36.387 -13 33 06.61 24.3w 15KG173 568 C~2lVF 2016 04 09.57252 15 57 32.272 -13 32 43.55 24.6w 15KG173 568 C~2lVF 2016 04 29.52172 15 55 47.706 -13 24 25.63 24.3w 15KG173 568 C~2lVF 2016 05 04.49428 15 55 17.525 -13 22 22.53 23.8w 15KG173 568 C~2lVF 2016 05 30.43368 15 52 30.074 -13 12 45.04 24.4w 15KG173 568 C~2lVF 2016 07 04.32248 15 49 16.037 -13 05 33.45 24.4w 15KG173 568 C~2lVF 2016 07 05.39482 15 49 11.528 -13 05 28.74 24.4w 15KG173 568 C~2lVF 2017 01 31.65347 16 07 55.460 -14 12 44.12 24.8w 15KG173 568 C~2lVF 2017 03 30.59606 16 08 46.918 -14 00 38.77 24.3w 15KG173 568 C~2lVF 2017 08 25.24527 15 58 31.039 -13 37 13.89 24.4w 15KG173 568 C~2lVF 2017 08 27.23687 15 58 34.982 -13 37 51.93 24.1w 15KG173 568 C~2lVF 2017 08 27.26102 15 58 35.025 -13 37 52.38 24.2w 15KG173 568 C~2lVF
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 0.07 0.00 -0.03
2 0.0001 -4.64 0.04 -0.16 -0.07
3 0.0001 -5.12 -0.01 0.00 0.10
4 0.0028 -96.39 0.16 -2.21 0.00
5 0.0053 -178.32 -0.05 -4.14 0.11
6 0.0054 -182.47 -0.14 -4.40 -0.02
7 0.0055 -186.29 0.06 -4.59 -0.08
8 0.0628 -1917.59 -0.23 -102.93 -0.05
9 0.0629 -1920.28 0.21 -103.12 0.07
10 0.1367 -3295.33 -0.03 -342.65 0.01
11 0.7426 15316.80 0.02 -218.08 -0.03
12 0.8029 14998.67 -0.15 95.68 -0.12
13 0.8108 14885.33 0.00 133.77 -0.06
14 0.8711 13570.33 0.06 376.71 0.02
15 0.8712 13567.05 -0.04 377.09 0.04
16 0.8848 13175.91 0.10 419.14 0.08
17 0.9745 10127.40 -0.02 553.55 0.02
18 0.9746 10123.33 0.01 553.55 0.03
19 0.9747 10119.15 -0.06 553.55 0.05
20 0.9777 10014.01 0.09 553.41 -0.03
21 1.0568 7414.81 -0.02 452.65 0.01
22 1.0569 7411.59 0.00 452.37 0.01
23 1.0651 7182.76 -0.04 431.60 0.05
24 1.1141 6088.31 -0.04 276.82 0.03
25 1.1141 6087.85 -0.03 276.72 0.03
26 1.1334 5796.14 -0.13 203.21 -0.00
27 1.8459 23559.21 0.11 832.39 0.07
28 1.8597 23237.96 0.07 885.84 -0.10
29 1.8623 23173.58 -0.10 895.39 -0.03
30 1.9169 21557.70 0.02 1049.80 0.00
31 1.9305 21096.14 0.01 1073.54 -0.12
32 2.0015 18561.23 0.03 1097.32 -0.06
33 2.0970 15682.43 0.02 883.44 -0.04
34 2.1000 15616.81 0.03 873.17 -0.10
35 2.6756 32724.47 -0.05 465.96 0.06
36 2.8343 33323.12 -0.07 1340.99 0.05
37 3.2385 24080.35 0.08 816.48 -0.11
38 3.2440 24145.56 0.03 791.59 0.11
39 3.2440 24146.28 -0.05 791.28 0.11
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.
15KG173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.214 39.220 39.208 ecceobj 0.279 0.279 0.279 incobj 7.162 7.162 7.162 qmin 27.636 27.812 27.811 qmax 51.610 51.633 51.361 amean 39.454 39.455 39.455 amin 39.076 39.081 39.071 amax 39.927 39.935 39.923 emean 0.255 0.241 0.254 emin 0.183 0.177 0.191 emax 0.297 0.294 0.292 imean 9.836 10.733 10.154 imin 6.554 6.554 6.554 imax 14.139 14.031 13.979 excite_mean 0.310 0.308 0.312 fracstop 1.000 1.000 1.000 cjmean 2.942 2.943 2.940 libcent 0 178.6 178.9 179.9 libamp 0 47.4 49.1 42.6 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 96.8 162.5 116.1 kozaiamp 81.7 180.0 70.9