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: 15KE172
# Created Fri Apr 26 01:17:17 2024
# Orbit generated from Bernstein formalism
# Fitting 36 observations of 36
# Arc: 3.25y
# First observation: 2014/05/30
# Last observation: 2017/08/31
Preliminary a, adot, b, bdot, g, gdot:
0.000022 0.022081 0.000037 0.017216 0.022916 0.000000
# Chi-squared of fit: 9.17 DOF: 66 RMS: 0.09
# Min/Max residuals: -0.29 0.20
# Exact a, adot, b, bdot, g, gdot:
1.564502E-05 2.219699E-02 1.112362E-05 1.732572E-02 2.313414E-02 -1.119666E-03
# Covariance matrix:
1.8791E-13 -1.8720E-13 3.8043E-14 -8.5410E-14 -6.2172E-14 -1.7643E-12
-1.8720E-13 3.2097E-13 -8.7571E-14 1.9483E-13 9.0266E-14 4.0492E-12
3.8043E-14 -8.7571E-14 1.6469E-13 -1.4047E-13 -3.2535E-14 -1.3597E-12
-8.5410E-14 1.9483E-13 -1.4047E-13 2.0568E-13 7.6460E-14 3.0295E-12
-6.2172E-14 9.0266E-14 -3.2535E-14 7.6460E-14 1.5497E-13 1.5318E-12
-1.7643E-12 4.0492E-12 -1.3597E-12 3.0295E-12 1.5318E-12 6.2901E-11
# lat0 lon0 xBary yBary zBary JD0
6.382603 -124.792069 -0.239401 0.109679 -0.980028 2456807.906448
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 359.21153 +/- 0.006
Argument of Peri: 15.16775 +/- 0.041
Long of Asc Node: 227.58040 +/- 0.000
Inclination: 38.37828 +/- 0.000
Eccentricity: 0.65984454 +/- 0.0001
Semi-Major Axis: 129.75662436 +/- 0.0324
Time of Perihelion: 2457982.9243 +/- 9.4
Perihelion: 44.13742377 +/- 0.0152
Aphelion: 215.37582496 +/- 0.0548
Period (y) 1478.0956 +/- 0.55
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -24.87930488 +/- 0.0004
Ecliptic Y -36.22349222 +/- 0.0006
Ecliptic Z 4.80586983 +/- 0.0001
Ecliptic XDOT 0.00235727 +/- 0.0000
Ecliptic YDOT -0.00120724 +/- 0.0000
Ecliptic ZDOT 0.00202313 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.20653328 +/- 0.0005
Geocenter to KBO 43.22616735 +/- 0.0007
# Hcoef: 8.08
The following table shows the complete astrometric record for 15KE172. 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 (15KE172) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.40567 15 37 43.770 -12 51 52.42 24.8r 15KE172 568 C~2csK 2014 06 01.33220 15 37 35.550 -12 51 08.67 24.8r 15KE172 568 C~2csK 2014 06 01.37504 15 37 35.355 -12 51 07.76 24.1r 15KE172 568 C~2csK 2014 06 01.41793 15 37 35.181 -12 51 06.91 24.3r 15KE172 568 C~2csK 2014 06 22.32930 15 36 13.682 -12 44 11.96 24.4r 15KE172 568 C~2csK 2014 06 22.37222 15 36 13.527 -12 44 11.21 24.6r 15KE172 568 C~2csK 2015 02 25.63010 15 48 17.119 -12 50 27.07 24.7r 15KE172 568 C~2csK 2015 03 19.62451 15 48 02.966 -12 42 32.92 24.4r 15KE172 568 C~2csK 2015 03 22.54324 15 47 57.913 -12 41 21.81 24.9r 15KE172 568 C~2csK 2015 04 13.55598 15 46 59.469 -12 31 46.75 24.5r 15KE172 568 C~2csK 2015 04 13.59705 15 46 59.325 -12 31 45.70 24.4r 15KE172 568 C~2csK 2015 04 18.56046 15 46 41.895 -12 29 30.35 24.4r 15KE172 568 C~2csK 2015 05 21.32647 15 44 25.335 -12 15 05.29 24.7r 15KE172 568 C~2csK 2015 05 21.36772 15 44 25.171 -12 15 04.28 24.6r 15KE172 568 C~2csK 2015 05 21.40894 15 44 24.984 -12 15 03.37 24.2r 15KE172 568 C~2csK 2015 05 22.48541 15 44 20.217 -12 14 37.16 24.1r 15KE172 568 C~2csK 2015 05 25.47599 15 44 07.055 -12 13 25.64 24.4r 15KE172 568 C~2csK 2015 06 20.36530 15 42 21.024 -12 04 37.45 24.5r 15KE172 568 C~2csK 2015 06 20.40617 15 42 20.872 -12 04 36.75 24.7r 15KE172 568 C~2csK 2015 06 23.42643 15 42 10.137 -12 03 47.84 24.1r 15KE172 568 C~2csK 2015 07 12.30961 15 41 14.968 -11 59 50.11 24.2r 15KE172 568 C~2csK 2015 07 18.39769 15 41 02.325 -11 59 00.03 24.1r 15KE172 568 C~2csK 2016 02 06.64531 15 53 43.487 -12 15 15.77 24.9w 15KE172 568 C~2csK 2016 02 12.63086 15 53 55.464 -12 13 49.01 25.0w 15KE172 568 C~2csK 2016 03 15.64429 15 54 03.112 -12 03 01.12 25.0w 15KE172 568 C~2csK 2016 04 03.55878 15 53 25.594 -11 54 54.93 25.0w 15KE172 568 C~2csK 2016 04 08.60833 15 53 11.092 -11 52 37.95 25.0w 15KE172 568 C~2csK 2016 04 09.55226 15 53 08.202 -11 52 12.17 24.8w 15KE172 568 C~2csK 2016 04 29.50547 15 51 55.863 -11 43 05.84 24.7w 15KE172 568 C~2csK 2016 05 04.47810 15 51 35.275 -11 40 52.60 24.7w 15KE172 568 C~2csK 2016 05 30.45392 15 49 41.897 -11 30 16.37 24.6w 15KE172 568 C~2csK 2016 07 04.31437 15 47 30.994 -11 20 34.07 23.9w 15KE172 568 C~2csK 2016 07 05.38672 15 47 27.914 -11 20 22.56 24.8w 15KE172 568 C~2csK 2017 03 28.61692 15 59 36.512 -11 16 15.69 25.6w 15KE172 568 C~2csK 2017 05 21.55221 15 56 20.806 -10 52 15.06 24.1w 15KE172 568 C~2csK 2017 08 31.26147 15 52 43.483 -10 39 26.60 15KE172 568 C~2csK
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 0.15
2 0.0053 -127.09 0.02 14.55 0.01
3 0.0054 -130.08 -0.11 14.77 -0.07
4 0.0055 -132.75 0.09 15.01 -0.15
5 0.0628 -1388.85 0.09 140.01 0.01
6 0.0629 -1391.23 0.03 140.21 0.02
7 0.7426 9005.19 0.03 2194.76 0.02
8 0.8028 8697.16 0.05 2611.17 0.10
9 0.8108 8609.07 -0.07 2664.02 0.05
10 0.8710 7645.11 0.14 3033.24 0.02
11 0.8712 7642.82 0.13 3033.79 -0.05
12 0.8847 7363.34 -0.12 3108.43 0.08
13 0.9745 5216.76 -0.21 3499.68 -0.02
14 0.9746 5214.19 0.09 3500.12 0.05
15 0.9747 5211.31 0.09 3500.38 -0.04
16 0.9776 5137.25 -0.04 3510.06 -0.03
17 0.9858 4932.97 0.01 3535.92 0.01
18 1.0567 3297.82 -0.09 3695.91 -0.04
19 1.0568 3295.48 -0.09 3696.08 -0.03
20 1.0651 3130.94 0.10 3707.67 -0.13
21 1.1168 2288.36 -0.00 3753.51 0.02
22 1.1334 2096.26 -0.07 3759.62 0.03
23 1.6899 13215.51 0.03 5315.15 0.20
24 1.7063 13368.73 0.09 5438.56 -0.22
25 1.7939 13337.50 -0.29 6097.18 0.11
26 1.8457 12691.67 -0.04 6451.97 -0.14
27 1.8596 12453.10 0.05 6539.12 0.01
28 1.8621 12405.88 0.07 6555.00 0.03
29 1.9168 11245.60 0.08 6854.74 0.06
30 1.9304 10920.22 0.01 6918.01 -0.03
31 2.0015 9149.77 0.02 7169.12 -0.14
32 2.0969 7139.45 0.04 7306.26 0.10
33 2.0999 7092.64 -0.02 7307.30 0.02
34 2.8288 17547.68 -0.05 9915.09 -0.04
35 2.9764 14403.25 0.06 10701.09 -0.05
36 3.2549 11093.25 -0.01 10747.26 0.09
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.
15KE172 quality flag:2 Type: SCATNEAR9:1EEEEEEE SCATNEAR axisobj 127.948 128.042 127.854 ecceobj 0.655 0.656 0.655 incobj 38.460 38.460 38.460 qmin 43.011 43.183 40.782 qmax 224.168 223.222 227.342 amean 130.275 130.275 130.344 amin 127.536 127.832 127.561 amax 134.211 133.801 134.930 emean 0.660 0.649 0.667 emin 0.650 0.628 0.653 emax 0.671 0.669 0.685 imean 39.234 40.127 38.647 imin 38.676 38.690 37.468 imax 39.686 41.504 39.633 excite_mean 0.914 0.914 0.914 fracstop 1.000 1.000 1.000 cjmean 2.652 2.652 2.652 libcent 0 -180.0 270.4 -180.0 libamp 0 -180.0 59.2 -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 36.5 17.9 40.6 kozaiamp 21.7 3.8 27.9