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: 15KU173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 41 observations of 41
# Arc: 3.24y
# First observation: 2014/05/29
# Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
0.000152 0.037134 -0.000054 -0.008055 0.032028 0.000000
# Chi-squared of fit: 3.32 DOF: 76 RMS: 0.05
# Min/Max residuals: -0.13 0.13
# Exact a, adot, b, bdot, g, gdot:
1.830898E-05 3.733591E-02 -3.686062E-06 -8.128871E-03 3.197757E-02 -4.657622E-03
# Covariance matrix:
1.6287E-13 -1.9164E-13 -1.6308E-14 3.3304E-14 -5.1347E-14 -1.2724E-12
-1.9164E-13 3.8909E-13 4.1466E-14 -8.5897E-14 8.2675E-14 3.2478E-12
-1.6308E-14 4.1466E-14 1.1086E-13 -6.6639E-14 9.8824E-15 3.9172E-13
3.3304E-14 -8.5897E-14 -6.6639E-14 6.6800E-14 -1.8062E-14 -8.1226E-13
-5.1347E-14 8.2675E-14 9.8824E-15 -1.8062E-14 1.1483E-13 7.4937E-13
-1.2724E-12 3.2478E-12 3.9172E-13 -8.1226E-13 7.4937E-13 3.0690E-11
# lat0 lon0 xBary yBary zBary JD0
6.912394 -127.657324 -0.271111 0.117722 -0.970571 2456806.851688
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 335.34898 +/- 0.023
Argument of Peri: 189.01173 +/- 0.040
Long of Asc Node: 80.84787 +/- 0.001
Inclination: 14.04399 +/- 0.000
Eccentricity: 0.21169228 +/- 0.0001
Semi-Major Axis: 39.40551399 +/- 0.0023
Time of Perihelion: 2462987.3037 +/- 5.9
Perihelion: 31.06367074 +/- 0.0041
Aphelion: 47.74735724 +/- 0.0046
Period (y) 247.3681 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.35037343 +/- 0.0002
Ecliptic Y -25.51554363 +/- 0.0003
Ecliptic Z 3.76356714 +/- 0.0000
Ecliptic XDOT 0.00271612 +/- 0.0000
Ecliptic YDOT -0.00170948 +/- 0.0000
Ecliptic ZDOT -0.00073879 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.24351650 +/- 0.0002
Geocenter to KBO 31.27192040 +/- 0.0003
# Hcoef: 8.31
The following table shows the complete astrometric record for 15KU173. 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 (15KU173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.35091 15 26 56.584 -11 39 56.79 23.4r 15KU173 568 C~2lVH 2014 05 29.38978 15 26 56.353 -11 39 56.12 23.4r 15KU173 568 C~2lVH 2014 05 29.42862 15 26 56.114 -11 39 55.71 23.2r 15KU173 568 C~2lVH 2014 05 30.45852 15 26 50.066 -11 39 41.50 23.1r 15KU173 568 C~2lVH 2014 05 31.37479 15 26 44.731 -11 39 29.38 23.2r 15KU173 568 C~2lVH 2014 06 21.35408 15 24 53.694 -11 36 19.50 23.5r 15KU173 568 C~2lVH 2014 06 21.39293 15 24 53.515 -11 36 19.28 23.4r 15KU173 568 C~2lVH 2014 07 19.27038 15 23 19.406 -11 37 20.65 23.4r 15KU173 568 C~2lVH 2015 02 23.63194 15 41 23.908 -13 03 49.44 23.7r 15KU173 568 C~2lVH 2015 03 19.59128 15 41 00.193 -12 59 34.69 23.4r 15KU173 568 C~2lVH 2015 03 22.51359 15 40 52.604 -12 58 50.92 23.2r 15KU173 568 C~2lVH 2015 04 12.50860 15 39 32.507 -12 52 44.38 23.4r 15KU173 568 C~2lVH 2015 04 12.54955 15 39 32.296 -12 52 43.59 23.2r 15KU173 568 C~2lVH 2015 04 18.53176 15 39 02.539 -12 50 48.67 23.2r 15KU173 568 C~2lVH 2015 05 17.40428 15 36 14.363 -12 41 49.83 23.2r 15KU173 568 C~2lVH 2015 05 17.44599 15 36 14.114 -12 41 49.25 23.3r 15KU173 568 C~2lVH 2015 05 17.49805 15 36 13.783 -12 41 48.16 23.3r 15KU173 568 C~2lVH 2015 05 24.38965 15 35 31.476 -12 39 58.01 23.3r 15KU173 568 C~2lVH 2015 05 24.43575 15 35 31.190 -12 39 57.35 23.2r 15KU173 568 C~2lVH 2015 05 24.47682 15 35 30.937 -12 39 56.67 23.2r 15KU173 568 C~2lVH 2015 05 26.46493 15 35 18.832 -12 39 27.26 23.3r 15KU173 568 C~2lVH 2015 06 18.36386 15 33 09.516 -12 35 19.64 23.3r 15KU173 568 C~2lVH 2015 06 18.40481 15 33 09.306 -12 35 19.40 23.4r 15KU173 568 C~2lVH 2015 06 21.37945 15 32 54.601 -12 35 01.83 23.4r 15KU173 568 C~2lVH 2015 07 10.41516 15 31 37.656 -12 34 42.77 23.9r 15KU173 568 C~2lVH 2015 07 18.33993 15 31 15.852 -12 35 24.96 23.5r 15KU173 568 C~2lVH 2016 02 06.63721 15 48 52.865 -14 00 08.54 23.7w 15KU173 568 C~2lVH 2016 03 15.63093 15 49 14.130 -13 57 03.81 23.6w 15KU173 568 C~2lVH 2016 03 15.63618 15 49 14.113 -13 57 03.79 23.7w 15KU173 568 C~2lVH 2016 04 03.56283 15 48 19.029 -13 52 35.11 23.7w 15KU173 568 C~2lVH 2016 04 08.61237 15 47 58.104 -13 51 11.17 23.5w 15KU173 568 C~2lVH 2016 04 09.55630 15 47 53.944 -13 50 55.10 23.6w 15KU173 568 C~2lVH 2016 04 29.51356 15 46 10.645 -13 45 00.17 23.4w 15KU173 568 C~2lVH 2016 05 04.48619 15 45 41.452 -13 43 31.72 23.4w 15KU173 568 C~2lVH 2016 05 30.46201 15 43 01.931 -13 36 44.18 23.4w 15KU173 568 C~2lVH 2016 07 04.29818 15 40 01.672 -13 32 42.36 23.6w 15KU173 568 C~2lVH 2016 07 05.36646 15 39 57.542 -13 32 42.57 23.6w 15KU173 568 C~2lVH 2017 03 30.58199 15 56 52.226 -14 50 14.10 23.6w 15KU173 568 C~2lVH 2017 08 19.27024 15 47 00.000 -14 37 15.02 23.7w 15KU173 568 C~2lVH 2017 08 25.27821 15 47 08.655 -14 39 13.67 23.6w 15KU173 568 C~2lVH 2017 08 26.25868 15 47 10.505 -14 39 34.31 23.7w 15KU173 568 C~2lVH
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 0.03 0.00 -0.07
2 0.0001 -3.45 0.03 -0.19 0.07
3 0.0002 -6.96 -0.03 -0.67 -0.08
4 0.0030 -96.55 -0.10 -8.95 0.06
5 0.0055 -175.48 -0.06 -16.67 -0.00
6 0.0630 -1802.75 -0.01 -239.15 -0.07
7 0.0631 -1805.35 0.05 -239.60 -0.01
8 0.1394 -3128.80 0.04 -645.52 -0.09
9 0.7400 13567.16 0.01 -1814.34 0.10
10 0.8056 13168.66 -0.01 -1647.79 -0.04
11 0.8136 13050.07 0.02 -1631.31 -0.01
12 0.8711 11821.13 0.04 -1551.27 -0.00
13 0.8712 11817.93 -0.13 -1551.23 -0.03
14 0.8876 11366.50 0.01 -1542.62 0.04
15 0.9666 8842.63 -0.08 -1605.85 -0.04
16 0.9667 8838.95 0.13 -1606.16 -0.11
17 0.9669 8833.98 0.01 -1606.27 0.08
18 0.9857 8205.43 0.02 -1647.97 0.08
19 0.9859 8201.21 0.04 -1648.34 0.04
20 0.9860 8197.44 0.05 -1648.57 0.10
21 0.9914 8018.13 -0.04 -1662.63 -0.01
22 1.0541 6119.26 -0.01 -1879.62 0.03
23 1.0542 6116.22 0.02 -1880.13 0.00
24 1.0624 5902.93 -0.08 -1915.33 0.01
25 1.1145 4804.95 0.07 -2171.01 0.02
26 1.1362 4505.55 -0.00 -2289.86 0.04
27 1.6928 20770.35 0.03 -3597.96 0.00
28 1.7968 21032.27 0.07 -3346.58 0.04
29 1.7968 21032.02 -0.02 -3346.61 -0.02
30 1.8486 20181.32 0.03 -3266.47 -0.02
31 1.8625 19862.45 -0.01 -3254.00 -0.04
32 1.8650 19799.21 -0.02 -3252.15 -0.06
33 1.9197 18239.81 -0.02 -3250.68 0.04
34 1.9333 17802.15 -0.02 -3262.39 0.00
35 2.0044 15430.46 -0.07 -3404.23 -0.06
36 2.0998 12806.34 0.03 -3785.31 0.02
37 2.1027 12747.64 0.02 -3799.74 0.03
38 2.8370 28339.27 0.01 -4992.53 0.02
39 3.2250 19673.27 0.01 -6152.34 -0.07
40 3.2414 19824.25 -0.07 -6239.81 -0.03
41 3.2441 19855.42 0.02 -6253.88 0.03
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.
15KU173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.176 39.182 39.170 ecceobj 0.210 0.210 0.210 incobj 14.045 14.045 14.045 qmin 30.174 30.168 30.164 qmax 49.120 49.272 49.091 amean 39.455 39.455 39.455 amin 39.108 39.097 39.113 amax 39.853 39.860 39.848 emean 0.202 0.202 0.202 emin 0.167 0.168 0.167 emax 0.235 0.236 0.234 imean 13.378 13.377 13.379 imin 12.381 12.384 12.378 imax 14.657 14.653 14.657 excite_mean 0.308 0.308 0.308 fracstop 1.000 1.000 1.000 cjmean 2.944 2.944 2.944 libcent 0 180.0 180.4 180.3 libamp 0 35.9 38.3 35.1 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 180.2 180.1 180.3 kozaiamp 180.0 180.0 180.0