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: 15KH173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 2.83y
# First observation: 2014/05/30
# Last observation: 2017/03/30
Preliminary a, adot, b, bdot, g, gdot:
0.000595 0.044686 0.000054 0.005814 0.034669 0.000000
# Chi-squared of fit: 5.35 DOF: 52 RMS: 0.08
# Min/Max residuals: -0.29 0.14
# Exact a, adot, b, bdot, g, gdot:
2.032719E-05 4.587579E-02 3.619026E-06 5.947000E-03 3.553757E-02 5.106628E-03
# Covariance matrix:
3.1844E-13 -3.7607E-13 1.1384E-14 -2.8145E-14 -8.8085E-14 -1.9697E-12
-3.7607E-13 6.3014E-13 -2.3401E-14 5.7512E-14 1.6901E-13 4.0379E-12
1.1384E-14 -2.3401E-14 1.9427E-13 -1.2100E-13 -8.3982E-15 -1.7957E-13
-2.8145E-14 5.7512E-14 -1.2100E-13 1.0575E-13 2.6249E-14 4.5081E-13
-8.8085E-14 1.6901E-13 -8.3982E-15 2.6249E-14 2.5693E-13 1.6285E-12
-1.9697E-12 4.0379E-12 -1.7957E-13 4.5081E-13 1.6285E-12 3.1289E-11
# lat0 lon0 xBary yBary zBary JD0
6.569099 -126.245587 -0.264132 0.112144 -0.973370 2456807.894078
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 17.00605 +/- 0.012
Argument of Peri: 9.52440 +/- 0.025
Long of Asc Node: 193.69262 +/- 0.002
Inclination: 9.70554 +/- 0.000
Eccentricity: 0.28803680 +/- 0.0001
Semi-Major Axis: 39.54743205 +/- 0.0038
Time of Perihelion: 2452509.3200 +/- 3.0
Perihelion: 28.15631638 +/- 0.0046
Aphelion: 50.93854772 +/- 0.0061
Period (y) 248.7056 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -16.89567699 +/- 0.0002
Ecliptic Y -23.48990277 +/- 0.0003
Ecliptic Z 3.21932902 +/- 0.0000
Ecliptic XDOT 0.00264505 +/- 0.0000
Ecliptic YDOT -0.00236623 +/- 0.0000
Ecliptic ZDOT 0.00050029 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.11363104 +/- 0.0003
Geocenter to KBO 28.13923579 +/- 0.0004
# Hcoef: 9.94
The following table shows the complete astrometric record for 15KH173. 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 (15KH173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.39330 15 32 09.554 -12 20 28.96 25.0r 15KH173 568 C~2lVF 2014 06 01.32025 15 31 57.552 -12 19 45.83 24.5r 15KH173 568 C~2lVF 2014 06 22.30598 15 29 59.693 -12 13 38.61 24.6r 15KH173 568 C~2lVF 2014 06 22.34880 15 29 59.479 -12 13 38.00 24.7r 15KH173 568 C~2lVF 2015 02 25.63010 15 49 25.592 -13 16 24.69 24.7r 15KH173 568 C~2lVF 2015 03 19.62451 15 49 10.159 -13 09 20.97 24.2r 15KH173 568 C~2lVF 2015 04 13.55598 15 47 39.926 -12 58 32.59 24.5r 15KH173 568 C~2lVF 2015 04 13.59705 15 47 39.726 -12 58 31.41 24.6r 15KH173 568 C~2lVF 2015 04 18.56045 15 47 14.379 -12 56 11.45 24.8r 15KH173 568 C~2lVF 2015 05 21.32647 15 43 53.679 -12 41 19.11 24.6r 15KH173 568 C~2lVF 2015 05 21.36772 15 43 53.420 -12 41 18.06 24.2r 15KH173 568 C~2lVF 2015 05 21.40894 15 43 53.141 -12 41 17.07 24.8r 15KH173 568 C~2lVF 2015 05 22.48541 15 43 46.125 -12 40 50.93 24.5r 15KH173 568 C~2lVF 2015 05 25.47599 15 43 26.740 -12 39 39.89 24.6r 15KH173 568 C~2lVF 2015 06 20.36530 15 40 51.538 -12 31 36.56 24.8r 15KH173 568 C~2lVF 2015 06 20.40617 15 40 51.321 -12 31 36.15 24.7r 15KH173 568 C~2lVF 2015 06 23.42643 15 40 35.769 -12 30 58.12 24.2r 15KH173 568 C~2lVF 2015 07 11.29956 15 39 20.522 -12 28 45.54 24.5r 15KH173 568 C~2lVF 2015 07 11.30916 15 39 20.487 -12 28 45.48 24.7r 15KH173 568 C~2lVF 2015 07 18.36957 15 38 59.946 -12 28 38.54 24.8r 15KH173 568 C~2lVF 2016 04 03.57092 15 58 53.346 -13 17 07.70 25.1w 15KH173 568 C~2lVF 2016 04 08.62048 15 58 33.101 -13 14 56.37 25.4w 15KH173 568 C~2lVF 2016 04 09.56442 15 58 29.032 -13 14 31.32 24.6w 15KH173 568 C~2lVF 2016 04 29.51761 15 56 45.235 -13 05 33.39 24.5w 15KH173 568 C~2lVF 2016 05 04.49023 15 56 15.272 -13 03 21.12 24.7w 15KH173 568 C~2lVF 2016 07 04.32248 15 50 15.906 -12 45 03.42 24.6w 15KH173 568 C~2lVF 2016 07 05.39482 15 50 11.421 -12 44 57.28 24.3w 15KH173 568 C~2lVF 2017 01 31.65858 16 08 41.487 -13 46 01.04 24.9w 15KH173 568 C~2lVF 2017 03 30.59606 16 09 32.290 -13 31 25.95 24.8w 15KH173 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 0.02 0.00 -0.20
2 0.0053 -181.08 0.02 -0.50 0.07
3 0.0627 -1946.12 0.03 -61.90 0.08
4 0.0628 -1949.31 0.02 -62.07 0.14
5 0.7426 15547.80 0.09 263.68 -0.29
6 0.8028 15231.28 -0.01 626.92 -0.01
7 0.8711 13793.49 -0.04 961.83 -0.05
8 0.8712 13790.37 0.04 962.31 -0.01
9 0.8848 13396.07 -0.09 1014.75 0.05
10 0.9745 10324.13 -0.09 1213.02 0.02
11 0.9746 10320.19 0.10 1213.17 0.12
12 0.9747 10315.98 0.02 1213.19 0.08
13 0.9777 10209.78 -0.05 1215.00 0.00
14 0.9859 9916.65 -0.02 1218.78 -0.02
15 1.0567 7590.22 -0.06 1162.44 0.01
16 1.0568 7587.03 0.01 1162.09 -0.11
17 1.0651 7356.40 0.01 1146.00 -0.03
18 1.1140 6252.73 -0.03 1017.29 0.03
19 1.1141 6252.22 -0.06 1017.23 0.06
20 1.1334 5957.87 -0.04 953.42 0.04
21 1.8458 23717.73 -0.08 2055.89 0.11
22 1.8596 23396.67 0.07 2120.61 -0.10
23 1.8622 23332.44 0.04 2132.28 -0.01
24 1.9168 21716.82 -0.07 2328.91 0.07
25 1.9305 21255.76 0.06 2362.48 -0.03
26 2.0970 15844.66 0.07 2267.88 -0.07
27 2.0999 15778.95 0.09 2259.10 0.06
28 2.6756 32632.81 0.04 2174.97 0.00
29 2.8342 33192.86 -0.08 3196.97 -0.02
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.
15KH173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.256 39.270 39.242 ecceobj 0.282 0.283 0.282 incobj 9.732 9.732 9.732 qmin 27.147 27.150 27.110 qmax 52.481 52.383 52.340 amean 39.455 39.455 39.455 amin 38.991 38.983 39.009 amax 40.020 40.038 40.006 emean 0.294 0.294 0.294 emin 0.276 0.275 0.275 emax 0.312 0.311 0.312 imean 9.317 9.362 9.251 imin 8.435 8.546 8.348 imax 10.140 10.125 10.100 excite_mean 0.336 0.336 0.335 fracstop 1.000 1.000 1.000 cjmean 2.922 2.922 2.922 libcent 0 180.6 180.1 180.3 libamp 0 78.7 85.0 72.2 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 178.3 171.0 185.1 kozaiamp 180.0 180.0 180.0