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: 15KQ175
# Created Sun Nov 24 02:10:21 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 26
# Arc: 2.03y
# First observation: 2015/03/19
# Last observation: 2017/03/28
Preliminary a, adot, b, bdot, g, gdot:
-0.000184 0.027449 0.000014 -0.005017 0.026193 0.000000
# Chi-squared of fit: 6.19 DOF: 44 RMS: 0.09
# Min/Max residuals: -0.19 0.19
# Exact a, adot, b, bdot, g, gdot:
1.611059E-05 2.724014E-02 -2.622659E-06 -4.992247E-03 2.616367E-02 -2.982365E-04
# Covariance matrix:
2.6723E-13 -1.4514E-13 -5.7652E-15 -3.1494E-15 1.6685E-13 8.0924E-13
-1.4514E-13 6.0045E-13 1.3805E-14 -9.0001E-14 1.5279E-13 1.2495E-11
-5.7652E-15 1.3805E-14 1.3362E-13 -1.2697E-13 -1.2671E-15 3.8123E-13
-3.1494E-15 -9.0001E-14 -1.2697E-13 2.2664E-13 -4.5268E-14 -2.9365E-12
1.6685E-13 1.5279E-13 -1.2671E-15 -4.5268E-14 2.8908E-13 6.7737E-12
8.0924E-13 1.2495E-11 3.8123E-13 -2.9365E-12 6.7737E-12 4.1181E-10
# lat0 lon0 xBary yBary zBary JD0
8.234129 -122.475362 0.850757 0.073306 -0.505772 2457101.145738
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 345.15121 +/- 0.342
Argument of Peri: 159.53817 +/- 0.428
Long of Asc Node: 94.32077 +/- 0.003
Inclination: 13.03335 +/- 0.001
Eccentricity: 0.10408029 +/- 0.0002
Semi-Major Axis: 43.03072084 +/- 0.0041
Time of Perihelion: 2461353.1048 +/- 98.1
Perihelion: 38.55207101 +/- 0.0103
Aphelion: 47.50937066 +/- 0.0107
Period (y) 282.2774 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -21.30540836 +/- 0.0004
Ecliptic Y -31.88588851 +/- 0.0006
Ecliptic Z 5.47387513 +/- 0.0001
Ecliptic XDOT 0.00237775 +/- 0.0000
Ecliptic YDOT -0.00157338 +/- 0.0000
Ecliptic ZDOT -0.00052140 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.73749631 +/- 0.0006
Geocenter to KBO 38.22093636 +/- 0.0008
# Hcoef: 8.84
The following table shows the complete astrometric record for 15KQ175. 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 (15KQ175) followed by the observatory code and reference code for the source of the astrometry.
2015 03 19.64496 15 48 36.019 -11 34 43.36 24.5r 15KQ175 568 C~2nvh 2015 03 22.56564 15 48 29.923 -11 33 57.41 24.7r 15KQ175 568 C~2nvh 2015 04 13.57652 15 47 20.627 -11 27 36.56 24.8r 15KQ175 568 C~2nvh 2015 04 13.61766 15 47 20.460 -11 27 35.72 24.8r 15KQ175 568 C~2nvh 2015 04 18.58658 15 46 59.957 -11 26 04.91 25.0r 15KQ175 568 C~2nvh 2015 05 21.34720 15 44 19.983 -11 16 58.42 24.5r 15KQ175 568 C~2nvh 2015 05 21.38827 15 44 19.775 -11 16 57.93 24.6r 15KQ175 568 C~2nvh 2015 05 21.42959 15 44 19.543 -11 16 57.43 24.6r 15KQ175 568 C~2nvh 2015 05 22.50587 15 44 13.972 -11 16 42.64 24.6r 15KQ175 568 C~2nvh 2015 05 25.49667 15 43 58.562 -11 16 02.94 24.4r 15KQ175 568 C~2nvi 2015 06 20.38581 15 41 54.277 -11 12 10.08 24.7r 15KQ175 568 C~2nvi 2015 06 20.42660 15 41 54.097 -11 12 09.87 24.7r 15KQ175 568 C~2nvi 2015 06 23.44700 15 41 41.456 -11 11 57.89 24.6r 15KQ175 568 C~2nvi 2015 07 12.30961 15 40 36.300 -11 12 03.72 24.2r 15KQ175 568 C~2nvi 2015 07 18.39769 15 40 21.155 -11 12 36.45 24.7r 15KQ175 568 C~2nvi 2016 02 06.64531 15 54 22.201 -12 17 42.81 24.7w 15KQ175 568 C~2nvi 2016 02 12.63086 15 54 35.205 -12 17 24.70 24.9w 15KQ175 568 C~2nvi 2016 03 15.64428 15 54 40.515 -12 12 27.95 25.6w 15KQ175 568 C~2nvi 2016 04 03.55878 15 53 55.440 -12 07 37.73 24.9w 15KQ175 568 C~2nvi 2016 04 08.60833 15 53 38.245 -12 06 12.32 25.3w 15KQ175 568 C~2nvi 2016 04 09.55226 15 53 34.832 -12 05 56.26 25.0w 15KQ175 568 C~2nvi 2016 04 29.50547 15 52 09.523 -12 00 12.90 24.9w 15KQ175 568 C~2nvi 2016 05 04.47810 15 51 45.317 -11 58 50.59 24.9w 15KQ175 568 C~2nvi 2016 05 30.45392 15 49 32.038 -11 52 44.59 24.7w 15KQ175 568 C~2nvi 2016 07 04.31437 15 46 57.641 -11 49 30.84 24.9w 15KQ175 568 C~2nvi 2017 03 28.61223 16 00 16.497 -12 46 00.72 25.2w 15KQ175 568 C~2nvi
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 0.07 0.00 -0.08
2 0.0080 -97.45 -0.01 25.31 0.19
3 0.0683 -1174.60 -0.06 174.31 -0.05
4 0.0684 -1177.18 -0.08 174.59 0.04
5 0.0820 -1491.20 ( -0.16) 197.11 ( 0.44)
6 0.1717 -3906.85 -0.01 211.41 0.17
7 0.1718 -3909.94 0.12 211.21 0.12
8 0.1719 -3913.38 -0.07 210.94 -0.00
9 0.1748 -3996.60 -0.08 207.20 -0.10
10 0.1830 -4226.54 -0.00 195.63 -0.19
11 0.2539 -6062.16 0.09 15.22 -0.04
12 0.2540 -6064.79 0.05 14.83 -0.02
13 0.2623 -6248.93 0.00 -15.12 -0.07
14 0.3139 -7182.91 0.00 -235.95 0.05
15 0.3306 -7392.96 -0.05 -318.00 -0.05
16 0.8871 5518.31 0.14 -1424.36 -0.13
17 0.9035 5700.81 -0.15 -1366.10 -0.11
18 0.9911 5713.73 -0.02 -1059.45 -0.05
19 1.0429 5005.64 -0.04 -916.59 -0.04
20 1.0567 4740.89 0.02 -886.97 0.16
21 1.0593 4688.53 0.17 -881.97 0.12
22 1.1139 3392.07 -0.07 -814.69 0.14
23 1.1275 3027.42 0.03 -810.69 -0.07
24 1.1987 1038.33 -0.03 -876.29 0.04
25 1.2941 -1215.93 -0.00 -1182.07 0.05
26 2.0259 10956.40 -0.02 -1995.03 -0.07
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.
15KQ175 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.676 42.689 42.664 ecceobj 0.099 0.099 0.099 incobj 13.033 13.033 13.033 qmin 37.932 37.993 37.934 qmax 48.338 48.285 48.385 amean 43.009 43.022 42.999 amin 42.666 42.682 42.652 amax 43.381 43.391 43.365 emean 0.099 0.099 0.099 emin 0.084 0.085 0.084 emax 0.115 0.114 0.116 imean 11.096 11.098 11.092 imin 10.326 10.322 10.327 imax 11.859 11.844 11.856 excite_mean 0.216 0.217 0.216 fracstop 1.000 1.000 1.000 cjmean 3.034 3.034 3.034 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -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 180.0 180.1 180.0 kozaiamp 180.0 180.0 180.0