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: 131318
# Created Sun Dec 22 02:06:54 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 67 observations of 67
# Arc: 19.17y
# First observation: 2001/03/22
# Last observation: 2020/05/23
# Chi-squared of fit: 170.83 DOF: 128 RMS: 0.28
# Min/Max residuals: -1.05 0.59
# Exact a, adot, b, bdot, g, gdot:
1.948518E-05 3.674857E-02 -5.235838E-06 -8.957267E-03 3.169978E-02 8.225272E-04
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
0.066411 -178.186426 -0.003240 0.000998 -1.000696 2451990.791333
# Heliocentric elements and errors
Epoch: 2451990.5000 = 2001/03/22
Mean Anomaly: 6.53503 +/- 0.000
Argument of Peri: 170.31351 +/- 0.000
Long of Asc Node: 2.07431 +/- 0.000
Inclination: 13.70868 +/- 0.000
Eccentricity: 0.17374530 +/- 0.0000
Semi-Major Axis: 39.30703212 +/- 0.0000
Time of Perihelion: 2450356.5127 +/- 0.0
Perihelion: 32.47762020 +/- 0.0000
Aphelion: 46.13644404 +/- 0.0000
Period (y) 246.4414 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -32.52624002 +/- 0.0000
Ecliptic Y -1.02867475 +/- 0.0000
Ecliptic Z 0.03642099 +/- 0.0000
Ecliptic XDOT 0.00002021 +/- 0.0000
Ecliptic YDOT -0.00317167 +/- 0.0000
Ecliptic ZDOT -0.00077335 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.54250840 +/- 0.0000
Geocenter to KBO 31.54598157 +/- 0.0000
# Hcoef: 7.90
The following table shows the complete astrometric record for 131318. 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 (131318) followed by the observatory code and reference code for the source of the astrometry.
2001 03 22.29059 12 06 45.70 -00 39 37.3 22.5R 131318 695 Cf4951 2001 03 22.30184 12 06 45.63 -00 39 36.9 22.4R 131318 695 Cf4951 2001 03 22.31291 12 06 45.54 -00 39 36.5 22.2R 131318 695 Cf4951 2001 03 23.32870 12 06 39.74 -00 39 03.9 131318 695 Cf4951 2001 03 23.33833 12 06 39.69 -00 39 03.7 22.5R 131318 695 Cf4951 2001 03 23.35053 12 06 39.60 -00 39 03.1 22. R 131318 695 Cf4951 2001 03 30.41266 12 05 59.01 -00 35 18.4 22.5R 131318 695 Cf4951 2001 03 30.42386 12 05 58.95 -00 35 18.2 131318 695 Cf4951 2001 03 30.43495 12 05 58.87 -00 35 18.1 131318 695 Cf4951 2001 03 31.41486 12 05 53.31 -00 34 47.2 131318 695 Cf4951 2001 03 31.42442 12 05 53.25 -00 34 46.8 22.5R 131318 695 Cf4951 2001 03 31.43458 12 05 53.20 -00 34 46.5 131318 695 Cf4951 2002 03 22.44419 12 13 40.66 -01 58 01.9 22.4R 131318 568 Cf4951 2002 03 22.49321 12 13 40.37 -01 58 00.3 22.5R 131318 568 Cf4951 2002 03 22.52705 12 13 40.17 -01 57 59.1 22.5R 131318 568 Cf4951 2002 04 06.29619 12 12 15.79 -01 50 12.5 131318 696 Cf4951 2002 04 06.40949 12 12 15.17 -01 50 08.9 131318 696 Cf4951 2003 04 29.33351 12 17 12.07 -02 57 23.6 22.4R 131318 568 Ch9859 2003 04 29.40058 12 17 11.78 -02 57 22.1 131318 568 Ch9859 2003 04 30.35953 12 17 07.38 -02 56 58.1 131318 568 Ch9859 2006 02 22.35927 12 43 44.79 -07 19 35.4 23.0R 131318 304 Cq6941 2006 02 22.37389 12 43 44.73 -07 19 35.1 131318 304 Cq6941 2011 04 28.345742 13 12 42.001 -13 01 49.56 21.8G 131318 F51 C~43ZT 2011 04 28.359821 13 12 41.930 -13 01 49.36 21.8G 131318 F51 C~43ZT 2011 04 28.374059 13 12 41.838 -13 01 49.01 22.2G 131318 F51 C~43ZT 2011 04 28.388179 13 12 41.775 -13 01 48.51 22.8G 131318 F51 C~43ZT 2012 01 06.642019 13 25 53.787 -14 29 01.51 23.5G 131318 F51 C~43ZT 2012 04 16.395600 13 20 47.233 -14 19 03.69 22.3G 131318 F51 C~43ZT 2012 04 16.408804 13 20 47.129 -14 19 03.68 23.1G 131318 F51 C~43ZT 2012 04 16.422013 13 20 47.053 -14 19 03.65 23.7G 131318 F51 C~43ZT 2012 04 16.435260 13 20 47.000 -14 19 02.62 22.8G 131318 F51 C~43ZT 2013 03 05.520978 13 31 36.775 -15 44 42.49 22.0G 131318 F51 C~43ZT 2014 05 30.19439 13 31 13.345 -16 17 39.82 23.3R 131318 695 2014 05 30.29663 13 31 12.928 -16 17 37.19 131318 695 2014 05 30.31727 13 31 12.860 -16 17 36.67 131318 695 2015 01 31.620089 13 47 01.666 -17 57 15.46 23.1G 131318 F51 C~43ZT 2015 03 23.36763 13 44 27.82 -17 55 50.5 22.3R 131318 695 C~1QOS 2015 03 23.49350 13 44 27.15 -17 55 48.2 131318 695 C~1QOS 2015 04 14.09819 13 42 25.39 -17 47 45.1 23.3V 131318 W84 C~2JSm 2015 04 14.17134 13 42 24.95 -17 47 43.3 131318 W84 C~2JSm 2015 04 14.26595 13 42 24.38 -17 47 40.7 131318 W84 C~2JSm 2015 04 18.36794 13 42 00.12 -17 45 49.8 131318 W84 C~1TzP 2015 04 19.35463 13 41 54.27 -17 45 22.4 23.6V 131318 W84 C~1TzP 2015 04 22.35506 13 41 36.54 -17 43 58.0 131318 W84 C~1TzP 2016 03 05.517552 13 52 56.188 -19 04 43.01 23.4G 131318 F51 C~43ZT 2016 03 06.476707 13 52 52.479 -19 04 38.07 22.7G 131318 F51 C~43ZT 2016 03 06.487673 13 52 52.459 -19 04 37.92 22.7G 131318 F51 C~43ZT 2016 03 06.498628 13 52 52.405 -19 04 37.31 22.8G 131318 F51 C~43ZT 2016 03 06.509645 13 52 52.369 -19 04 37.60 22.6G 131318 F51 C~43ZT 2017 03 27.510096 13 58 29.542 -20 04 51.98 22.8G 131318 F51 C~43ZT 2017 03 27.530108 13 58 29.415 -20 04 51.45 22.9G 131318 F51 C~43ZT 2017 03 27.540090 13 58 29.356 -20 04 51.18 22.7G 131318 F51 C~43ZT 2017 04 01.492376 13 58 02.510 -20 03 24.67 23.2G 131318 F51 C~43ZT 2017 04 01.514852 13 58 02.401 -20 03 23.95 23.4G 131318 F51 C~43ZT 2017 04 01.526066 13 58 02.321 -20 03 23.81 23.3G 131318 F51 C~43ZT 2017 04 25.439718 13 55 42.434 -19 54 00.22 23.5G 131318 F51 C~43ZT 2018 04 13.478389 14 04 13.153 -21 02 35.80 23.0G 131318 F51 C~43ZT 2019 01 10.644043 14 14 47.436 -21 54 40.87 23.7G 131318 F51 C~43ZT 2019 04 04.484034 14 12 26.512 -22 07 13.27 24.3G 131318 F51 C~43ZT 2019 05 01.422607 14 09 47.609 -21 57 15.09 23.7G 131318 F51 C~43ZT 2019 05 25.330445 14 07 33.117 -21 46 00.27 23.5G 131318 F51 C~43ZT 2019 05 25.343065 14 07 33.032 -21 45 59.90 22.8G 131318 F51 C~43ZT 2019 05 25.355690 14 07 32.966 -21 45 59.08 23.3G 131318 F51 C~43ZT 2019 05 25.368344 14 07 32.922 -21 45 59.21 23.1G 131318 F51 C~43ZT 2020 04 22.462206 14 18 00.167 -23 00 59.97 22.8G 131318 F51 C~43ZT 2020 04 26.462168 14 17 35.905 -22 59 24.86 23.4G 131318 F51 C~43ZT 2020 05 23.332516 14 15 00.010 -22 47 15.30 23.4G 131318 F51 C~43ZT
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 -0.16 0.00 0.24
2 0.0000 0.00 -0.21 0.00 0.28
3 0.0001 0.00 -0.59 0.00 0.33
4 0.0028 0.00 0.38 0.00 0.42
5 0.0029 0.00 0.48 0.00 0.31
6 0.0029 0.00 0.20 0.00 0.52
7 0.0222 0.00 0.05 0.00 0.47
8 0.0223 0.00 0.12 0.00 0.31
9 0.0223 0.00 -0.12 0.00 0.06
10 0.0250 0.00 0.10 0.00 0.13
11 0.0250 0.00 0.02 0.00 0.23
12 0.0250 0.00 0.15 0.00 0.21
13 0.9997 0.00 0.59 0.00 -0.16
14 0.9999 0.00 0.55 0.00 -0.12
15 1.0000 0.00 0.52 0.00 0.00
16 1.0404 0.00 -0.28 0.00 -0.37
17 1.0407 0.00 0.06 0.00 -0.27
18 2.1028 0.00 -0.39 0.00 -0.82
19 2.1030 0.00 -0.03 0.00 -1.02
20 2.1056 0.00 -0.87 0.00 -1.05
21 4.9228 0.00 -0.32 0.00 -0.06
22 4.9229 0.00 -0.27 0.00 -0.03
23 10.1001 0.00 -0.17 0.00 0.22
24 10.1001 0.00 -0.05 0.00 -0.01
25 10.1002 0.00 -0.24 0.00 -0.10
26 10.1002 0.00 0.00 0.00 -0.03
27 10.7936 0.00 -0.18 0.00 -0.15
28 11.0694 0.00 0.26 0.00 0.34
29 11.0695 0.00 -0.13 0.00 -0.05
30 11.0695 0.00 -0.09 0.00 -0.41
31 11.0695 0.00 0.30 0.00 0.23
32 11.9541 0.00 -0.33 0.00 0.02
33 13.1880 0.00 0.17 0.00 0.18
34 13.1882 0.00 -0.01 0.00 0.16
35 13.1883 0.00 0.19 0.00 0.14
36 13.8626 0.00 -0.03 0.00 0.07
37 14.0016 0.00 0.02 0.00 -0.05
38 14.0019 0.00 -0.04 0.00 0.03
39 14.0611 0.00 -0.06 0.00 -0.04
40 14.0613 0.00 -0.08 0.00 -0.16
41 14.0615 0.00 -0.11 0.00 -0.06
42 14.0728 0.00 0.32 0.00 0.03
43 14.0755 0.00 0.22 0.00 0.14
44 14.0837 0.00 0.42 0.00 0.22
45 14.9548 0.00 0.10 0.00 0.17
46 14.9574 0.00 -0.29 0.00 -0.37
47 14.9574 0.00 0.07 0.00 -0.28
48 14.9574 0.00 -0.08 0.00 0.27
49 14.9575 0.00 0.04 0.00 -0.09
50 16.0143 0.00 0.25 0.00 -0.14
51 16.0143 0.00 -0.03 0.00 0.06
52 16.0144 0.00 -0.11 0.00 0.17
53 16.0279 0.00 -0.33 0.00 -0.27
54 16.0280 0.00 -0.06 0.00 0.02
55 16.0280 0.00 -0.31 0.00 -0.05
56 16.0935 0.00 -0.07 0.00 -0.04
57 17.0601 0.00 0.55 0.00 0.17
58 17.8052 0.00 -0.05 0.00 0.02
59 18.0348 0.00 -0.05 0.00 -0.16
60 18.1085 0.00 -0.18 0.00 0.29
61 18.1740 0.00 0.09 0.00 -0.04
62 18.1740 0.00 -0.20 0.00 -0.03
63 18.1740 0.00 -0.21 0.00 0.43
64 18.1741 0.00 0.11 0.00 -0.06
65 19.0860 0.00 0.40 0.00 0.02
66 19.0970 0.00 0.10 0.00 0.27
67 19.1705 0.00 0.14 0.00 -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.
131318 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.159 39.159 39.159 ecceobj 0.171 0.171 0.171 incobj 13.728 13.728 13.728 qmin 31.972 31.972 31.972 qmax 47.542 47.513 47.565 amean 39.456 39.456 39.456 amin 39.025 39.025 39.025 amax 39.924 39.924 39.927 emean 0.167 0.167 0.167 emin 0.142 0.142 0.142 emax 0.191 0.191 0.191 imean 14.349 14.349 14.348 imin 13.681 13.681 13.681 imax 15.058 15.058 15.058 excite_mean 0.299 0.299 0.299 fracstop 1.000 1.000 1.000 cjmean 2.949 2.949 2.949 libcent 0 179.8 179.9 179.9 libamp 0 85.0 84.9 84.9 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 175.1 175.0 175.1 kozaiamp 180.0 180.0 180.0