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: 15KD173
# Created Fri Nov 22 02:10:22 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 2.83y
# First observation: 2014/05/29
# Last observation: 2017/03/28
Preliminary a, adot, b, bdot, g, gdot:
-0.000306 0.037979 -0.000006 0.001001 0.031343 0.000000
# Chi-squared of fit: 9.18 DOF: 48 RMS: 0.10
# Min/Max residuals: -0.25 0.23
# Exact a, adot, b, bdot, g, gdot:
1.889942E-05 3.745250E-02 5.491684E-07 9.928679E-04 3.180494E-02 -7.115552E-03
# Covariance matrix:
3.2688E-13 -3.7461E-13 9.2331E-16 -5.1176E-15 -1.3108E-13 -2.4732E-12
-3.7461E-13 6.5868E-13 -2.6222E-15 1.0240E-14 2.1913E-13 5.4285E-12
9.2331E-16 -2.6222E-15 2.1050E-13 -1.2626E-13 4.3144E-16 -2.3299E-14
-5.1176E-15 1.0240E-14 -1.2626E-13 1.0212E-13 7.2961E-15 1.0489E-13
-1.3108E-13 2.1913E-13 4.3144E-16 7.2961E-15 2.8424E-13 2.4431E-12
-2.4732E-12 5.4285E-12 -2.3299E-14 1.0489E-13 2.4431E-12 5.3401E-11
# lat0 lon0 xBary yBary zBary JD0
7.109960 -128.152713 -0.279619 0.120770 -0.967780 2456806.855568
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 325.65261 +/- 0.015
Argument of Peri: 133.89241 +/- 0.032
Long of Asc Node: 153.89762 +/- 0.004
Inclination: 7.03776 +/- 0.000
Eccentricity: 0.24888002 +/- 0.0002
Semi-Major Axis: 39.43804204 +/- 0.0050
Time of Perihelion: 2465431.5316 +/- 3.5
Perihelion: 29.62270123 +/- 0.0082
Aphelion: 49.25338285 +/- 0.0097
Period (y) 247.6745 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.65799478 +/- 0.0003
Ecliptic Y -25.47276908 +/- 0.0004
Ecliptic Z 3.89173248 +/- 0.0001
Ecliptic XDOT 0.00291201 +/- 0.0000
Ecliptic YDOT -0.00150901 +/- 0.0000
Ecliptic ZDOT 0.00000912 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.41055855 +/- 0.0004
Geocenter to KBO 31.44165520 +/- 0.0005
# Hcoef: 9.78
The following table shows the complete astrometric record for 15KD173. 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 (15KD173) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.35479 15 25 12.031 -11 21 06.59 25.1r 15KD173 568 C~2lVE 2014 05 29.39367 15 25 11.801 -11 21 05.89 25.4r 15KD173 568 C~2lVE 2014 05 29.43250 15 25 11.581 -11 21 05.12 24.6r 15KD173 568 C~2lVE 2014 05 31.37870 15 25 00.503 -11 20 29.58 24.7r 15KD173 568 C~2lVE 2015 02 25.61255 15 40 03.443 -12 23 24.79 24.8r 15KD173 568 C~2lVE 2015 03 22.53501 15 39 33.014 -12 16 08.00 24.4r 15KD173 568 C~2lVE 2015 04 13.54773 15 38 10.086 -12 07 32.15 24.4r 15KD173 568 C~2lVE 2015 04 13.58882 15 38 09.893 -12 07 31.15 25.1r 15KD173 568 C~2lVE 2015 05 21.31829 15 34 37.622 -11 52 31.48 24.5r 15KD173 568 C~2lVE 2015 05 21.35947 15 34 37.365 -11 52 30.79 24.9r 15KD173 568 C~2lVE 2015 05 21.40058 15 34 37.121 -11 52 29.96 24.6r 15KD173 568 C~2lVE 2015 05 22.47722 15 34 30.668 -11 52 07.44 24.8r 15KD173 568 C~2lVE 2015 05 25.46768 15 34 12.823 -11 51 07.86 24.7r 15KD173 568 C~2lVE 2015 06 20.35717 15 31 51.362 -11 44 39.09 24.9r 15KD173 568 C~2lVE 2015 07 11.29135 15 30 29.822 -11 42 57.51 25.1r 15KD173 568 C~2lVE 2015 07 18.36074 15 30 11.708 -11 43 11.94 24.3r 15KD173 568 C~2lVE 2016 02 06.63317 15 48 03.733 -12 52 52.16 25.8w 15KD173 568 C~2lVE 2016 02 12.61871 15 48 19.747 -12 52 20.74 24.9w 15KD173 568 C~2lVE 2016 03 15.62688 15 48 27.769 -12 45 21.18 24.7w 15KD173 568 C~2lVE 2016 04 03.54663 15 47 34.594 -12 38 42.72 25.0w 15KD173 568 C~2lVE 2016 04 08.59619 15 47 14.246 -12 36 45.53 25.2w 15KD173 568 C~2lVE 2016 04 29.50143 15 45 29.295 -12 28 24.91 25.2w 15KD173 568 C~2lVE 2016 05 04.47406 15 45 00.747 -12 26 27.81 24.7w 15KD173 568 C~2lVE 2016 05 30.46605 15 42 24.700 -12 17 28.20 24.7w 15KD173 568 C~2lVE 2016 07 04.31032 15 39 29.313 -12 11 15.89 24.9w 15KD173 568 C~2lVE 2016 07 05.38268 15 39 25.316 -12 11 12.97 26.0w 15KD173 568 C~2lVE 2017 03 28.60754 15 56 47.912 -13 07 34.66 25.5w 15KD173 568 C~2lVE
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 -0.06 0.00 -0.01
2 0.0001 -3.45 -0.09 -0.17 -0.04
3 0.0002 -6.78 -0.00 -0.24 0.02
4 0.0055 -173.40 0.07 -6.68 0.03
5 0.7454 13621.43 -0.05 -429.33 0.13
6 0.8136 13082.14 0.03 -110.50 0.02
7 0.8739 11773.54 0.09 100.42 0.08
8 0.8740 11770.54 0.18 100.71 0.07
9 0.9773 8523.13 -0.09 223.21 0.06
10 0.9774 8519.30 -0.14 222.96 -0.11
11 0.9775 8515.62 -0.03 222.90 -0.11
12 0.9805 8418.10 0.02 221.75 0.23
13 0.9887 8149.07 0.06 215.92 -0.13
14 1.0596 6037.39 0.01 86.06 -0.05
15 1.1169 4850.73 0.09 -109.63 0.07
16 1.1362 4596.30 0.07 -189.16 -0.12
17 1.6928 20921.23 -0.23 -503.44 0.07
18 1.7091 21144.17 -0.07 -418.55 0.11
19 1.7968 21162.00 0.03 19.03 -0.25
20 1.8486 20304.43 0.03 228.45 -0.01
21 1.8624 19984.55 0.23 273.84 -0.05
22 1.9196 18359.72 0.06 404.62 -0.12
23 1.9332 17922.45 -0.05 421.04 -0.04
24 2.0044 15557.76 -0.17 409.16 -0.04
25 2.0998 12959.36 -0.05 160.81 0.04
26 2.1027 12901.52 0.00 149.66 -0.08
27 2.8316 28694.94 0.05 376.56 0.23
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.
15KD173 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.229 39.239 39.218 ecceobj 0.249 0.249 0.248 incobj 7.048 7.048 7.048 qmin 28.599 28.588 28.615 qmax 50.772 50.870 50.803 amean 39.455 39.455 39.455 amin 39.063 39.055 39.072 amax 39.911 39.926 39.899 emean 0.244 0.244 0.243 emin 0.208 0.208 0.209 emax 0.273 0.275 0.274 imean 7.165 7.102 7.217 imin 4.798 4.735 4.876 imax 9.893 9.941 9.851 excite_mean 0.275 0.275 0.275 fracstop 1.000 1.000 1.000 cjmean 2.965 2.965 2.965 libcent 0 179.8 179.2 179.7 libamp 0 46.9 53.6 41.6 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 95.5 95.4 95.5 kozaiamp 51.5 52.9 50.4