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: 15KQ173
# Created Sun Dec 22 02:10:23 2024
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 2.10y
# First observation: 2014/05/30
# Last observation: 2016/07/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000013 0.028166 0.000100 -0.022122 0.031320 0.000000
# Chi-squared of fit: 6.98 DOF: 44 RMS: 0.09
# Min/Max residuals: -0.41 0.23
# Exact a, adot, b, bdot, g, gdot:
1.353704E-05 2.785534E-02 -1.106773E-05 -2.183979E-02 3.096124E-02 -7.830744E-03
# Covariance matrix:
2.1824E-13 -2.3632E-13 -2.5536E-14 8.5373E-14 -4.0922E-15 -1.8788E-12
-2.3632E-13 5.7390E-13 1.1408E-13 -3.7467E-13 2.1341E-13 8.2383E-12
-2.5536E-14 1.1408E-13 2.1982E-13 -2.3234E-13 6.7128E-14 2.1607E-12
8.5373E-14 -3.7467E-13 -2.3234E-13 4.5858E-13 -2.0528E-13 -7.0806E-12
-4.0922E-15 2.1341E-13 6.7128E-14 -2.0528E-13 5.6499E-13 4.4976E-12
-1.8788E-12 8.2383E-12 2.1607E-12 -7.0806E-12 4.4976E-12 1.5567E-10
# lat0 lon0 xBary yBary zBary JD0
6.465220 -124.619463 -0.236429 0.111172 -0.980581 2456807.906448
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 318.64228 +/- 0.018
Argument of Peri: 235.81917 +/- 0.040
Long of Asc Node: 63.70446 +/- 0.000
Inclination: 38.58983 +/- 0.001
Eccentricity: 0.25583750 +/- 0.0004
Semi-Major Axis: 39.32921975 +/- 0.0089
Time of Perihelion: 2467150.1457 +/- 3.0
Perihelion: 29.26733046 +/- 0.0155
Aphelion: 49.39110904 +/- 0.0179
Period (y) 246.6500 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.60039471 +/- 0.0004
Ecliptic Y -27.35567506 +/- 0.0006
Ecliptic Z 3.63651335 +/- 0.0001
Ecliptic XDOT 0.00228918 +/- 0.0000
Ecliptic YDOT -0.00101577 +/- 0.0000
Ecliptic ZDOT -0.00199682 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.27960142 +/- 0.0006
Geocenter to KBO 32.29845120 +/- 0.0008
# Hcoef: 8.73
The following table shows the complete astrometric record for 15KQ173. 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 (15KQ173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 30.40567 15 38 29.561 -12 49 26.57 24.1r 15KQ173 568 C~2lVG 2014 06 01.33220 15 38 17.623 -12 49 15.09 23.9r 15KQ173 568 C~2lVG 2014 06 01.37504 15 38 17.324 -12 49 14.79 21.5r 15KQ173 568 C~2lVG 2014 06 22.32930 15 36 18.004 -12 48 30.60 24.4r 15KQ173 568 C~2lVG 2014 06 22.37222 15 36 17.763 -12 48 30.79 24.4r 15KQ173 568 C~2lVG 2014 07 19.34581 15 34 31.450 -12 51 54.68 24.6r 15KQ173 568 C~2lVG 2015 04 18.51897 15 48 05.070 -14 31 39.42 24.3r 15KQ173 568 C~2lVG 2015 05 17.39179 15 45 10.042 -14 26 54.51 23.6r 15KQ173 568 C~2lVG 2015 05 17.43344 15 45 09.768 -14 26 54.16 24.3r 15KQ173 568 C~2lVG 2015 05 17.48044 15 45 09.441 -14 26 53.89 24.0r 15KQ173 568 C~2lVG 2015 05 17.48543 15 45 09.439 -14 26 53.80 24.2r 15KQ173 568 C~2lVG 2015 05 17.51054 15 45 09.259 -14 26 53.56 23.7r 15KQ173 568 C~2lVG 2015 05 24.37741 15 44 24.878 -14 25 57.02 23.6r 15KQ173 568 C~2lVG 2015 05 24.42349 15 44 24.570 -14 25 56.71 23.5r 15KQ173 568 C~2lVG 2015 05 24.46441 15 44 24.303 -14 25 56.38 23.7r 15KQ173 568 C~2lVG 2015 06 18.35156 15 41 52.622 -14 24 03.51 24.1r 15KQ173 568 C~2lVG 2015 06 18.39254 15 41 52.395 -14 24 03.45 24.2r 15KQ173 568 C~2lVG 2015 06 21.36717 15 41 36.239 -14 24 02.47 24.0r 15KQ173 568 C~2lVG 2015 07 10.39924 15 40 08.970 -14 25 14.24 23.8r 15KQ173 568 C~2lVG 2015 07 18.32574 15 39 42.385 -14 26 27.11 23.7r 15KQ173 568 C~2lVG 2016 04 29.53411 15 52 25.254 -16 06 02.40 23.6w 15KQ173 568 C~2lVG 2016 05 04.50650 15 51 54.604 -16 05 19.82 23.8w 15KQ173 568 C~2lVG 2016 05 30.44985 15 49 06.304 -16 01 59.33 23.8w 15KQ173 568 C~2lVG 2016 07 04.33463 15 45 49.755 -16 01 00.98 24.4w 15KQ173 568 C~2lVG 2016 07 05.40699 15 45 45.061 -16 01 05.03 24.1w 15KQ173 568 C~2lVG
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 0.14 0.00 -0.02
2 0.0053 -172.51 0.04 -29.32 -0.01
3 0.0054 -176.83 -0.41 -30.04 -0.06
4 0.0628 -1884.41 0.17 -393.53 0.07
5 0.0629 -1887.79 -0.06 -394.54 -0.10
6 0.1367 -3351.62 0.03 -957.70 0.07
7 0.8846 9569.03 -0.08 -4071.67 -0.04
8 0.9637 7023.20 0.03 -4361.68 0.11
9 0.9638 7019.24 0.03 -4362.23 0.09
10 0.9639 7014.54 -0.19 -4363.04 -0.11
11 0.9639 7014.49 0.23 -4362.96 0.04
12 0.9640 7011.89 0.02 -4363.31 0.00
13 0.9828 6370.27 0.08 -4453.45 0.00
14 0.9829 6365.83 0.01 -4454.16 -0.05
15 0.9830 6361.98 0.03 -4454.71 -0.03
16 1.0512 4188.48 0.00 -4844.97 0.01
17 1.0513 4185.25 0.05 -4845.66 0.04
18 1.0594 3956.37 -0.01 -4898.33 0.01
19 1.1115 2738.17 0.02 -5259.04 0.00
20 1.1333 2379.00 -0.06 -5418.96 0.03
21 1.9168 14508.59 0.00 -8787.32 0.04
22 1.9305 14065.73 -0.01 -8841.30 -0.08
23 2.0015 11643.53 0.03 -9175.02 -0.02
24 2.0970 8858.61 -0.08 -9746.70 -0.09
25 2.0999 8793.38 -0.02 -9765.81 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.
15KQ173 quality flag:3 Type: 3:2E 3:2E 3:2E Type: 6:4II 6:4II 6:4II axisobj 39.167 39.186 39.148 ecceobj 0.257 0.258 0.256 incobj 38.639 38.639 38.639 qmin 25.005 24.905 25.187 qmax 54.484 54.533 54.344 amean 39.452 39.452 39.452 amin 39.061 39.075 39.056 amax 39.928 39.921 39.951 emean 0.299 0.300 0.296 emin 0.206 0.207 0.207 emax 0.365 0.367 0.360 imean 36.330 36.296 36.390 imin 34.679 34.596 34.807 imax 38.358 38.380 38.338 excite_mean 0.665 0.666 0.665 fracstop 1.000 1.000 1.000 cjmean 2.521 2.521 2.522 libcent 0 180.5 179.9 180.2 libamp 0 52.6 44.0 62.6 libcent 1 178.9 179.9 179.3 libamp 1 148.1 130.8 169.9 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 265.9 265.9 265.9 kozaiamp 40.4 40.5 40.4