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: 15KH163
# Created Thu Apr 25 01:17:12 2024
# Orbit generated from Bernstein formalism
# Fitting 35 observations of 36
# Arc: 2.97y
# First observation: 2014/06/01
# Last observation: 2017/05/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000269 0.018001 0.000113 -0.008943 0.019433 0.000000
# Chi-squared of fit: 17.19 DOF: 64 RMS: 0.12
# Min/Max residuals: -0.32 0.31
# Exact a, adot, b, bdot, g, gdot:
1.358068E-05 1.746166E-02 -7.305352E-06 -8.726012E-03 1.951074E-02 -9.836580E-03
# Covariance matrix:
2.0125E-13 -2.0926E-13 -2.7661E-14 5.9835E-14 -4.8523E-14 -2.3184E-12
-2.0926E-13 3.5029E-13 5.8034E-14 -1.2642E-13 6.9885E-14 4.8932E-12
-2.7661E-14 5.8034E-14 1.5013E-13 -1.0077E-13 2.5770E-14 1.0185E-12
5.9835E-14 -1.2642E-13 -1.0077E-13 1.1406E-13 -5.0938E-14 -2.1972E-12
-4.8523E-14 6.9885E-14 2.5770E-14 -5.0938E-14 2.1949E-13 2.0010E-12
-2.3184E-12 4.8932E-12 1.0185E-12 -2.1972E-12 2.0010E-12 8.5166E-11
# lat0 lon0 xBary yBary zBary JD0
5.857812 -124.037273 -0.258344 0.100250 -0.976594 2456809.840788
# Heliocentric elements and errors
Epoch: 2456800.5000 = 2014/05/23
Mean Anomaly: 352.13693 +/- 0.021
Argument of Peri: 230.75403 +/- 0.025
Long of Asc Node: 67.55563 +/- 0.000
Inclination: 27.16756 +/- 0.001
Eccentricity: 0.73665855 +/- 0.0006
Semi-Major Axis: 151.84623458 +/- 0.2745
Time of Perihelion: 2471728.2347 +/- 1.0
Perihelion: 39.98740737 +/- 0.1115
Aphelion: 263.70506179 +/- 0.4843
Period (y) 1871.1743 +/- 5.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -28.87531363 +/- 0.0007
Ecliptic Y -43.20765066 +/- 0.0010
Ecliptic Z 5.23065443 +/- 0.0001
Ecliptic XDOT 0.00272389 +/- 0.0000
Ecliptic YDOT -0.00034087 +/- 0.0000
Ecliptic ZDOT -0.00135884 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 52.23068599 +/- 0.0009
Geocenter to KBO 51.25382382 +/- 0.0012
# Hcoef: 7.82
The following table shows the complete astrometric record for 15KH163. 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 (15KH163) followed by the observatory code and reference code for the source of the astrometry.
2014 06 01.34001 15 40 13.907 -13 32 54.50 24.3r 15KH163 568 C~2Gu0 2014 06 01.38290 15 40 13.738 -13 32 54.19 24.7r 15KH163 568 C~2Gu0 2014 06 01.42581 15 40 13.546 -13 32 53.71 24.8r 15KH163 568 C~2Gu0 2014 06 22.33713 15 38 58.705 -13 31 23.24 25.4r 15KH163 568 C~2Gu0 2014 06 22.37998 15 38 58.534 -13 31 23.15 25.4r 15KH163 568 C~2Gu0 2014 07 19.35399 15 37 51.062 -13 32 04.08 26.0r 15KH163 568 C~2Gu0 2015 03 19.57896 15 47 55.667 -14 26 27.16 25.3r 15KH163 568 C~2Gu0 2015 03 21.63764 15 47 52.198 -14 26 14.01 24.9r 15KH163 568 C~2Gu0 2015 04 12.49631 15 46 58.445 -14 23 24.39 25.0r 15KH163 568 C~2Gu0 2015 04 12.53727 15 46 58.313 -14 23 24.23 24.3r 15KH163 568 C~2Gu0 2015 04 18.51897 15 46 39.045 -14 22 30.17 24.7r 15KH163 568 C~2Gu0 2015 05 17.39179 15 44 49.665 -14 18 05.57 24.5r 15KH163 568 C~2Gu0 2015 05 17.43344 15 44 49.484 -14 18 05.26 25.1r 15KH163 568 C~2Gu0 2015 05 17.48044 15 44 49.297 -14 18 04.82 24.6r 15KH163 568 C~2Gu0 2015 05 17.51054 15 44 49.151 -14 18 04.53 25.3r 15KH163 568 C~2Gu0 2015 05 24.37741 15 44 21.469 -14 17 09.53 25.1r 15KH163 568 C~2Gu0 2015 05 24.42349 15 44 21.276 -14 17 09.17 24.9r 15KH163 568 C~2Gu0 2015 05 24.46441 15 44 21.109 -14 17 08.90 24.6r 15KH163 568 C~2Gu0 2015 05 26.45236 15 44 13.126 -14 16 54.16 24.9r 15KH163 568 C~2Gu0 2015 06 18.35156 15 42 46.341 -14 14 49.29 24.9r 15KH163 568 C~2Gu0 2015 06 18.39254 15 42 46.198 -14 14 49.10 24.7r 15KH163 568 C~2Gu0 2015 07 18.32574 15 41 24.657 -14 15 02.06 24.9r 15KH163 568 C~2Gu0 2016 02 06.65744 15 51 35.123 -15 10 07.58 25.1w 15KH163 568 C~2Gu0 2016 02 12.64299 15 51 43.920 -15 10 30.52 24.4w 15KH163 568 C~2Gu0 2016 03 17.62613 15 51 39.062 -15 09 50.78 24.4w 15KH163 568 C~2Gu0 2016 04 08.61643 15 50 50.119 -15 07 26.92 25.3w 15KH163 568 C~2Gu0 2016 04 09.56037 15 50 47.356 -15 07 19.25 25.7w 15KH163 568 C~2Gu0 2016 04 29.52981 15 49 39.209 -15 04 27.67 24.9w 15KH163 568 C~2Gu0 2016 05 04.50238 15 49 20.050 -15 03 43.73 15KH163 568 C~2Gu0 2016 05 30.44581 15 47 35.189 -15 00 17.79 24.7w 15KH163 568 C~2Gu0 2016 07 04.32652 15 45 33.097 -14 58 18.98 25.0w 15KH163 568 C~2Gu0 2016 07 05.39888 15 45 30.182 -14 58 19.79 26.0w 15KH163 568 C~2Gu0 2017 04 03.61140 15 54 52.943 -15 52 14.19 25.4w 15KH163 568 C~2Gu0 2017 04 03.61609 15 54 52.921 -15 52 14.35 25.4w 15KH163 568 C~2Gu0 2017 04 04.49990 15 54 50.615 -15 52 08.45 25.1w 15KH163 568 C~2Gu0 2017 05 21.53807 15 52 00.035 -15 45 57.62 24.6w 15KH163 568 C~2Gu0
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 0.12 0.00 0.05
2 0.0001 -2.47 0.11 -0.26 0.08
3 0.0002 -5.31 -0.27 -0.44 0.20
4 0.0575 -1088.36 0.31 -163.03 -0.07
5 0.0576 -1090.80 -0.12 -163.52 -0.17
6 0.1315 -2038.84 0.09 -430.49 -0.06
7 0.7974 7274.58 0.09 -1617.99 -0.11
8 0.8030 7222.47 ( 0.14) -1616.30 ( 0.47)
9 0.8629 6422.48 -0.22 -1623.88 0.24
10 0.8630 6420.57 -0.21 -1624.15 0.03
11 0.8793 6135.32 0.09 -1633.64 -0.16
12 0.9584 4525.67 0.06 -1730.68 0.13
13 0.9585 4523.03 -0.07 -1730.97 0.06
14 0.9586 4520.28 0.00 -1731.15 0.12
15 0.9587 4518.15 -0.32 -1731.34 0.08
16 0.9775 4113.51 0.03 -1768.08 -0.00
17 0.9776 4110.70 -0.04 -1768.36 -0.01
18 0.9778 4108.27 -0.02 -1768.64 -0.05
19 0.9832 3991.83 0.03 -1780.37 -0.18
20 1.0459 2734.19 -0.11 -1943.40 -0.05
21 1.0460 2732.12 -0.10 -1943.69 0.01
22 1.1280 1580.38 0.11 -2225.55 -0.12
23 1.6846 10962.01 0.16 -3480.64 0.04
24 1.7010 11091.69 0.20 -3475.45 -0.23
25 1.7941 11014.17 0.14 -3451.84 -0.03
26 1.8543 10289.17 0.03 -3465.20 -0.03
27 1.8569 10248.35 0.02 -3466.42 0.12
28 1.9115 9245.42 -0.03 -3514.30 0.08
29 1.9252 8964.46 -0.02 -3532.20 0.02
30 1.9962 7434.74 -0.05 -3665.72 -0.15
31 2.0917 5681.54 0.05 -3943.02 0.14
32 2.0946 5640.52 0.16 -3953.24 -0.08
33 2.8399 14312.29 0.09 -5339.58 0.16
34 2.8399 14312.01 -0.00 -5339.80 -0.06
35 2.8423 14278.07 -0.19 -5341.11 -0.03
36 2.9711 11783.40 -0.09 -5506.09 0.00
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.
15KH163 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 150.846 151.614 150.088 ecceobj 0.736 0.738 0.735 incobj 27.211 27.211 27.211 qmin 38.412 37.908 38.109 qmax 281.008 278.767 278.102 amean 153.408 152.921 152.480 amin 149.091 149.023 148.414 amax 160.478 159.090 158.980 emean 0.739 0.741 0.740 emin 0.729 0.730 0.729 emax 0.751 0.752 0.750 imean 26.002 25.470 25.529 imin 25.690 25.090 25.204 imax 26.349 26.203 26.223 excite_mean 0.859 0.857 0.856 fracstop 1.000 1.000 1.000 cjmean 2.930 2.929 2.931 libcent 0 176.2 -180.0 -180.0 libamp 0 175.2 -180.0 -180.0 libcent 1 182.3 -180.0 -180.0 libamp 1 176.5 -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 248.6 268.2 262.7 kozaiamp 22.8 37.4 32.7