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: 15KF173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 26 observations of 26
# Arc: 2.99y
# First observation: 2014/05/29
# Last observation: 2017/05/25
Preliminary a, adot, b, bdot, g, gdot:
-0.000412 0.045060 0.000054 -0.010752 0.034010 0.000000
# Chi-squared of fit: 1.94 DOF: 46 RMS: 0.05
# Min/Max residuals: -0.08 0.10
# Exact a, adot, b, bdot, g, gdot:
2.026332E-05 4.477073E-02 -4.713666E-06 -1.072967E-02 3.534877E-02 -1.292681E-03
# Covariance matrix:
1.7972E-13 -2.1129E-13 -1.1103E-14 3.3128E-14 -1.5122E-14 -1.0508E-12
-2.1129E-13 4.9890E-13 3.4322E-14 -1.0114E-13 6.6920E-14 3.2103E-12
-1.1103E-14 3.4322E-14 1.3442E-13 -7.3973E-14 1.2732E-14 2.5932E-13
3.3128E-14 -1.0114E-13 -7.3973E-14 8.1621E-14 -2.3745E-14 -7.4703E-13
-1.5122E-14 6.6920E-14 1.2732E-14 -2.3745E-14 2.4438E-13 7.7855E-13
-1.0508E-12 3.2103E-12 2.5932E-13 -7.4703E-13 7.7855E-13 2.3742E-11
# lat0 lon0 xBary yBary zBary JD0
7.502758 -127.574291 -0.269759 0.127764 -0.969679 2456806.855568
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 357.34166 +/- 0.017
Argument of Peri: 156.13013 +/- 0.030
Long of Asc Node: 80.57233 +/- 0.000
Inclination: 15.35025 +/- 0.000
Eccentricity: 0.25741649 +/- 0.0001
Semi-Major Axis: 39.37739030 +/- 0.0035
Time of Perihelion: 2457466.9636 +/- 4.3
Perihelion: 29.24100053 +/- 0.0034
Aphelion: 49.51378006 +/- 0.0049
Period (y) 247.1033 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.48696150 +/- 0.0002
Ecliptic Y -23.16749356 +/- 0.0003
Ecliptic Z 3.69379905 +/- 0.0001
Ecliptic XDOT 0.00273740 +/- 0.0000
Ecliptic YDOT -0.00212547 +/- 0.0000
Ecliptic ZDOT -0.00083687 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.26039528 +/- 0.0003
Geocenter to KBO 28.28952743 +/- 0.0004
# Hcoef: 8.44
The following table shows the complete astrometric record for 15KF173. 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 (15KF173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.35479 15 27 51.920 -11 06 51.14 22.9r 15KF173 568 C~2lVE 2014 05 29.39367 15 27 51.671 -11 06 50.55 23.1r 15KF173 568 C~2lVE 2014 05 29.43250 15 27 51.417 -11 06 50.10 23.4r 15KF173 568 C~2lVE 2014 05 30.46242 15 27 44.860 -11 06 36.43 23.0r 15KF173 568 C~2lVE 2014 05 31.37870 15 27 39.059 -11 06 24.61 23.5r 15KF173 568 C~2lVE 2014 06 21.35796 15 25 38.708 -11 03 37.38 23.2r 15KF173 568 C~2lVE 2014 06 21.39681 15 25 38.509 -11 03 37.27 23.5r 15KF173 568 C~2lVE 2014 07 19.27427 15 23 57.487 -11 05 49.97 23.2r 15KF173 568 C~2lVE 2015 03 22.53917 15 43 44.132 -12 40 45.88 22.9r 15KF173 568 C~2lVE 2015 04 18.55633 15 41 47.608 -12 32 24.91 22.8r 15KF173 568 C~2lVE 2015 05 21.32236 15 38 20.288 -12 22 09.87 22.8r 15KF173 568 C~2lVE 2015 05 21.36353 15 38 20.007 -12 22 09.21 22.8r 15KF173 568 C~2lVE 2015 05 21.40471 15 38 19.728 -12 22 08.57 23.1r 15KF173 568 C~2lVE 2015 05 22.48134 15 38 12.563 -12 21 51.61 22.9r 15KF173 568 C~2lVE 2015 06 20.36123 15 35 14.945 -12 16 51.77 23.3r 15KF173 568 C~2lVF 2015 06 20.40209 15 35 14.720 -12 16 51.59 23.0r 15KF173 568 C~2lVF 2015 07 10.41516 15 33 46.029 -12 17 04.11 23.5r 15KF173 568 C~2lVF 2015 07 18.33993 15 33 22.468 -12 18 06.23 23.3r 15KF173 568 C~2lVF 2016 02 06.65340 15 52 59.072 -13 54 55.67 23.4w 15KF173 568 C~2lVF 2016 02 12.63895 15 53 17.622 -13 55 12.13 23.3w 15KF173 568 C~2lVF 2016 03 17.62205 15 53 27.682 -13 51 50.33 23.0w 15KF173 568 C~2lVF 2016 07 05.40293 15 43 34.525 -13 28 34.81 23.2w 15KF173 568 C~2lVF 2017 03 30.58668 16 02 33.290 -14 57 53.58 23.4w 15KF173 568 C~2lVF 2017 05 21.54752 15 57 43.946 -14 44 42.10 22.9w 15KF173 568 C~2lVF 2017 05 21.56169 15 57 43.844 -14 44 41.93 22.8w 15KF173 568 C~2lVF 2017 05 25.53328 15 57 17.000 -14 43 48.35 23.2w 15KF173 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 -0.05 0.00 -0.02
2 0.0001 -3.70 -0.01 -0.33 0.06
3 0.0002 -7.43 -0.00 -0.82 -0.01
4 0.0030 -104.33 0.07 -11.44 0.02
5 0.0055 -189.98 -0.06 -21.10 0.03
6 0.0630 -1947.71 0.03 -298.80 -0.01
7 0.0631 -1950.57 0.03 -299.43 -0.01
8 0.1394 -3357.68 -0.00 -799.31 0.02
9 0.8136 14947.18 -0.01 -2113.01 -0.02
10 0.8876 13163.21 -0.02 -2024.66 -0.06
11 0.9773 10057.31 -0.04 -2145.01 -0.08
12 0.9774 10053.15 -0.08 -2145.35 -0.07
13 0.9775 10049.02 -0.07 -2145.70 -0.08
14 0.9805 9942.76 0.01 -2154.22 0.03
15 1.0596 7339.16 0.04 -2486.43 0.04
16 1.0597 7335.92 0.01 -2487.05 0.03
17 1.1145 6076.13 0.01 -2813.09 -0.03
18 1.1362 5755.90 0.10 -2957.05 0.10
19 1.6928 23934.73 0.10 -4610.34 0.06
20 1.7092 24205.28 0.06 -4565.92 -0.06
21 1.8022 24303.98 -0.05 -4334.90 0.07
22 2.1028 15484.41 -0.05 -4944.46 -0.02
23 2.8370 33080.10 0.02 -6505.43 0.09
24 2.9793 28715.41 0.02 -6631.70 -0.01
25 2.9793 28713.90 -0.04 -6631.85 -0.06
26 2.9902 28314.59 -0.02 -6664.33 -0.01
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.
15KF173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.108 39.119 39.096 ecceobj 0.253 0.253 0.253 incobj 15.349 15.349 15.349 qmin 27.357 27.322 27.381 qmax 51.956 52.094 51.979 amean 39.454 39.454 39.454 amin 39.079 39.087 39.072 amax 39.895 39.908 39.932 emean 0.255 0.256 0.255 emin 0.179 0.179 0.182 emax 0.306 0.307 0.306 imean 14.303 14.262 14.353 imin 11.431 11.365 11.523 imax 17.817 17.828 17.807 excite_mean 0.358 0.358 0.358 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 libcent 0 179.3 180.2 179.5 libamp 0 39.8 36.4 45.1 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 92.0 91.6 92.3 kozaiamp 62.0 62.2 61.7