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: 15KK174
# Created Sun Dec 22 02:10:24 2024
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 23
# Arc: 2.43y
# First observation: 2015/03/19
# Last observation: 2017/08/24
Preliminary a, adot, b, bdot, g, gdot:
-0.000029 0.018018 -0.000017 -0.001523 0.021557 0.000000
# Chi-squared of fit: 16.47 DOF: 40 RMS: 0.15
# Min/Max residuals: -0.54 0.38
# Exact a, adot, b, bdot, g, gdot:
1.346849E-05 1.800589E-02 -1.663151E-06 -1.568995E-03 2.150899E-02 4.221594E-03
# Covariance matrix:
2.4979E-13 6.5376E-14 -5.0919E-15 -1.7222E-14 2.5241E-13 5.7034E-12
6.5376E-14 3.4652E-13 3.2380E-15 -5.1907E-14 3.3951E-13 1.3452E-11
-5.0919E-15 3.2380E-15 1.2747E-13 -7.9772E-14 -5.3447E-15 4.8584E-13
-1.7222E-14 -5.1907E-14 -7.9772E-14 1.0946E-13 -5.2998E-14 -3.3298E-12
2.5241E-13 3.3951E-13 -5.3447E-15 -5.2998E-14 5.4273E-13 1.5475E-11
5.7034E-12 1.3452E-11 4.8584E-13 -3.3298E-12 1.5475E-11 8.0703E-10
# lat0 lon0 xBary yBary zBary JD0
8.456828 -127.733454 0.800510 0.086388 -0.580246 2457101.129378
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 105.25079 +/- 0.259
Argument of Peri: 350.68623 +/- 0.205
Long of Asc Node: 111.17471 +/- 0.005
Inclination: 9.62945 +/- 0.001
Eccentricity: 0.23916659 +/- 0.0010
Semi-Major Axis: 42.41037743 +/- 0.0222
Time of Perihelion: 2427606.7846 +/- 68.7
Perihelion: 32.26723207 +/- 0.0461
Aphelion: 52.55352279 +/- 0.0510
Period (y) 276.1954 +/- 0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.13809207 +/- 0.0010
Ecliptic Y -36.34333174 +/- 0.0012
Ecliptic Z 6.83728705 +/- 0.0002
Ecliptic XDOT 0.00146596 +/- 0.0000
Ecliptic YDOT -0.00185201 +/- 0.0000
Ecliptic ZDOT -0.00011843 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.08093739 +/- 0.0011
Geocenter to KBO 46.49218949 +/- 0.0016
# Hcoef: 8.34
The following table shows the complete astrometric record for 15KK174. 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 (15KK174) followed by the observatory code and reference code for the source of the astrometry.
2015 03 19.62860 15 28 12.228 -10 09 02.83 24.7r 15KK174 568 C~2lVJ 2015 03 22.54735 15 28 05.796 -10 08 14.03 24.9r 15KK174 568 C~2lVJ 2015 04 13.56008 15 26 59.682 -10 01 37.48 24.6r 15KK174 568 C~2lVJ 2015 04 13.60117 15 26 59.538 -10 01 36.74 24.8r 15KK174 568 C~2lVJ 2015 04 18.57019 15 26 41.072 -10 00 04.61 26.6r 15KK174 568 C~2lVJ 2015 05 21.33063 15 24 23.816 -09 50 52.83 24.8r 15KK174 568 C~2lVJ 2015 05 21.37180 15 24 23.633 -09 50 51.98 24.7r 15KK174 568 C~2lVJ 2015 05 21.41305 15 24 23.451 -09 50 51.60 24.9r 15KK174 568 C~2lVJ 2015 05 22.48950 15 24 18.840 -09 50 36.50 24.4r 15KK174 568 C~2lVJ 2015 05 25.48011 15 24 06.077 -09 49 56.39 24.9r 15KK174 568 C~2lVJ 2015 06 20.36937 15 22 25.600 -09 45 53.26 25.4r 15KK174 568 C~2lVJ 2015 06 23.43052 15 22 15.535 -09 45 38.69 25.1r 15KK174 568 C~2lVJ 2016 04 03.51820 15 31 29.951 -10 25 01.14 25.3w 15KK174 568 C~2lVJ 2016 04 08.56787 15 31 13.752 -10 23 30.56 25.6w 15KK174 568 C~2lVJ 2016 04 29.44543 15 29 54.560 -10 17 16.50 25.3w 15KK174 568 C~2lVJ 2016 05 04.38051 15 29 33.868 -10 15 52.35 25.6w 15KK174 568 C~2lVJ 2016 05 30.49842 15 27 42.164 -10 09 35.38 24.8w 15KK174 568 C~2lVJ 2016 05 30.50246 15 27 42.151 -10 09 35.20 25.5w 15KK174 568 C~2lVJ 2016 07 03.35024 15 25 43.350 -10 06 02.06 15KK174 568 C~2lVJ 2017 03 30.56791 15 35 39.894 -10 46 25.01 15KK174 568 C~2lVJ 2017 08 20.27585 15 28 54.928 -10 32 19.94 25.0w 15KK174 568 C~2lVJ 2017 08 23.26141 15 28 57.991 -10 33 06.44 25.3w 15KK174 568 C~2lVJ 2017 08 24.24592 15 28 59.186 -10 33 21.69 25.5w 15KK174 568 C~2lVJ
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 0.11
2 0.0080 -104.09 0.00 23.79 0.11
3 0.0683 -1148.31 -0.02 166.03 -0.03
4 0.0684 -1150.55 0.08 166.22 -0.03
5 0.0820 -1437.67 -0.00 187.73 -0.14
6 0.1717 -3539.55 0.08 216.59 -0.07
7 0.1718 -3542.38 -0.03 216.74 0.18
8 0.1719 -3545.08 -0.01 216.43 -0.02
9 0.1748 -3614.86 0.18 214.01 0.11
10 0.1830 -3807.59 0.12 205.64 -0.06
11 0.2539 -5306.99 -0.20 68.31 -0.02
12 0.2623 -5454.76 -0.01 44.97 0.08
13 1.0428 3064.50 -0.07 -210.79 -0.04
14 1.0566 2810.56 0.06 -181.49 0.06
15 1.1138 1585.75 -0.05 -105.79 0.01
16 1.1273 1269.02 -0.03 -99.41 -0.09
17 1.1988 -422.03 0.03 -141.40 0.03
18 1.1988 -422.26 0.06 -141.27 0.17
19 1.2915 -2174.54 -0.27 -370.61 -0.54
20 2.0313 6953.74 -0.03 -560.05 -0.10
21 2.4220 955.71 0.38 -1198.17 0.29
22 2.4302 1010.96 -0.12 -1232.09 -0.26
23 2.4329 1031.80 -0.09 -1242.53 0.26
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.
15KK174 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.063 42.124 42.004 ecceobj 0.240 0.243 0.238 incobj 9.623 9.623 9.623 qmin 31.723 31.493 31.768 qmax 53.351 53.683 53.318 amean 42.326 42.326 42.326 amin 41.948 41.871 41.939 amax 42.789 42.834 42.782 emean 0.235 0.239 0.233 emin 0.222 0.222 0.221 emax 0.248 0.254 0.247 imean 7.927 7.676 7.923 imin 7.598 7.094 7.543 imax 8.193 8.382 8.128 excite_mean 0.273 0.274 0.271 fracstop 1.000 1.000 1.000 cjmean 2.994 2.993 2.995 libcent 0 180.0 179.1 180.5 libamp 0 23.9 62.5 35.2 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 199.9 221.9 201.5 kozaiamp 180.0 128.5 180.0