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: 15883
# Created Sun Nov 24 02:06:39 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 37 observations of 37
# Arc: 27.19y
# First observation: 1997/02/03
# Last observation: 2024/04/14
# Chi-squared of fit: 239.36 DOF: 68 RMS: 0.45
# Min/Max residuals: -1.22 1.15
# Exact a, adot, b, bdot, g, gdot:
1.428341E-05 2.366731E-02 4.646564E-06 8.126559E-03 2.466785E-02 4.569590E-03
# 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
2.805477 135.112591 0.007335 0.048520 -0.993218 2450482.920350
# Heliocentric elements and errors
Epoch: 2450482.5000 = 1997/02/03
Mean Anomaly: 47.59288 +/- 0.000
Argument of Peri: 299.61321 +/- 0.000
Long of Asc Node: 127.20778 +/- 0.000
Inclination: 19.20398 +/- 0.000
Eccentricity: 0.21077426 +/- 0.0000
Semi-Major Axis: 46.77457049 +/- 0.0000
Time of Perihelion: 2435035.1974 +/- 0.0
Perihelion: 36.91569509 +/- 0.0000
Aphelion: 56.63344589 +/- 0.0000
Period (y) 319.9064 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -29.38034252 +/- 0.0000
Ecliptic Y 29.27510830 +/- 0.0000
Ecliptic Z 1.98436244 +/- 0.0000
Ecliptic XDOT -0.00217533 +/- 0.0000
Ecliptic YDOT -0.00152901 +/- 0.0000
Ecliptic ZDOT 0.00092552 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.52305853 +/- 0.0000
Geocenter to KBO 40.53852701 +/- 0.0000
# Hcoef: 7.07
The following table shows the complete astrometric record for 15883. 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 (15883) followed by the observatory code and reference code for the source of the astrometry.
1997 02 03.41963 09 13 47.32 +18 58 58.8 22.5R 15883 568 C30145 1997 02 03.46472 09 13 47.11 +18 58 59.8 15883 568 C30145 1997 02 03.50861 09 13 46.90 +18 59 01.3 15883 568 C30145 1997 02 07.42255 09 13 27.36 +19 00 45.7 15883 568 C30145 1997 02 07.46247 09 13 27.16 +19 00 46.4 15883 568 C30145 1997 02 09.37141 09 13 17.71 +19 01 36.5 15883 568 C30145 1997 02 09.44672 09 13 17.29 +19 01 38.2 15883 568 C30145 1997 02 09.54094 09 13 16.84 +19 01 40.7 15883 568 C30145 1997 04 07.87649 09 09 42.30 +19 19 35.6 15883 950 C30242 1997 04 07.91400 09 09 42.20 +19 19 36.1 15883 950 C30242 1998 02 16.45976 09 18 45.48 +19 06 47.2 15883 568 Ca0526 1998 02 16.52728 09 18 45.15 +19 06 49.0 15883 568 Ca0526 1998 02 16.57516 09 18 44.93 +19 06 50.0 15883 568 Ca0526 1998 02 18.48546 09 18 35.70 +19 07 38.2 15883 568 Ca0526 1998 02 18.53478 09 18 35.42 +19 07 39.4 15883 568 Ca0526 1998 12 18.22884 09 28 57.88 +18 41 38.1 15883 950 Ca3586 1998 12 18.25549 09 28 57.83 +18 41 38.9 15883 950 Ca3586 1998 12 19.19253 09 28 55.43 +18 41 59.1 15883 950 Ca3586 1998 12 19.22964 09 28 55.33 +18 41 59.0 15883 950 Ca3586 1999 01 23.36716 09 26 42.16 +18 57 02.0 15883 705 Ca3586 1999 01 23.40789 09 26 41.89 +18 57 02.4 15883 705 Ca3586 1999 01 23.43951 09 26 41.76 +18 57 03.4 15883 705 Ca3586 1999 01 23.48229 09 26 41.55 +18 57 04.9 15883 705 Ca3586 1999 12 29.45958 09 34 17.37 +18 46 12.9 22.9R 15883 695 Ca9818 1999 12 29.53161 09 34 17.12 +18 46 14.4 23.0R 15883 695 Ca9818 2000 01 05.32677 09 33 53.49 +18 49 07.2 23.4R 15883 697 Ca9818 2000 01 05.40487 09 33 53.19 +18 49 09.6 23.4R 15883 697 Ca9818 2000 01 05.48679 09 33 52.88 +18 49 11.6 23.4R 15883 697 Ca9818 2000 01 05.54127 09 33 52.68 +18 49 12.9 23.2R 15883 697 Ca9818 2013 03 13.32656 10 40 57.42 +18 32 28.7 22.8R 15883 695 C~0uhl 2013 03 14.29908 10 40 53.21 +18 32 52.4 15883 695 C~0uhl 2013 03 14.40920 10 40 52.74 +18 32 55.1 15883 695 C~0uhl 2018 03 16.181343 11 06 08.14 +17 52 36.2 15883 W84 C~3dfo 2018 03 16.182668 11 06 08.14 +17 52 36.5 15883 W84 C~3dfo 2024 04 14.162510 11 32 49.295 +17 02 21.60 23.1G 15883 G37 C~8076 2024 04 14.204240 11 32 49.155 +17 02 21.62 15883 G37 C~8076 2024 04 14.244940 11 32 49.008 +17 02 21.97 15883 G37 C~8076
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 0.22 0.00 0.06
2 0.0001 0.00 0.50 0.00 -0.16
3 0.0002 0.00 0.69 0.00 0.16
4 0.0110 0.00 0.00 0.00 -0.19
5 0.0111 0.00 0.04 0.00 -0.55
6 0.0163 0.00 0.53 0.00 -0.93
7 0.0165 0.00 -0.06 0.00 -1.22
8 0.0168 0.00 0.32 0.00 -1.18
9 0.1737 0.00 0.01 0.00 0.10
10 0.1738 0.00 -0.47 0.00 0.29
11 1.0350 0.00 -0.21 0.00 0.72
12 1.0352 0.00 -0.17 0.00 0.80
13 1.0353 0.00 0.06 0.00 0.58
14 1.0406 0.00 0.02 0.00 0.03
15 1.0407 0.00 -0.57 0.00 -0.01
16 1.8694 0.00 -0.07 0.00 -0.38
17 1.8695 0.00 0.21 0.00 -0.14
18 1.8721 0.00 0.05 0.00 0.10
19 1.8722 0.00 0.04 0.00 -0.79
20 1.9684 0.00 0.26 0.00 0.16
21 1.9685 0.00 -0.88 0.00 -0.58
22 1.9686 0.00 -0.58 0.00 -0.47
23 1.9687 0.00 -0.69 0.00 -0.16
24 2.8995 0.00 0.12 0.00 1.15
25 2.8997 0.00 -0.05 0.00 0.89
26 2.9183 0.00 0.23 0.00 0.31
27 2.9185 0.00 0.16 0.00 0.65
28 2.9187 0.00 0.18 0.00 0.50
29 2.9189 0.00 0.27 0.00 0.37
30 16.1038 0.00 0.19 0.00 0.41
31 16.1064 0.00 -0.00 0.00 0.17
32 16.1067 0.00 0.17 0.00 0.20
33 21.1109 0.00 -0.09 0.00 -0.37
34 21.1109 0.00 -0.00 0.00 -0.10
35 27.1916 0.00 -0.11 0.00 0.28
36 27.1917 0.00 -0.00 0.00 -0.28
37 27.1919 0.00 -0.05 0.00 -0.50
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.
15883 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 47.099 47.099 47.099 ecceobj 0.216 0.216 0.216 incobj 19.155 19.155 19.155 qmin 36.228 36.204 36.189 qmax 58.637 58.603 58.607 amean 47.116 47.117 47.117 amin 46.690 46.701 46.688 amax 47.640 47.648 47.660 emean 0.213 0.213 0.213 emin 0.197 0.198 0.197 emax 0.231 0.231 0.230 imean 17.863 17.863 17.863 imin 17.267 17.269 17.265 imax 18.419 18.399 18.410 excite_mean 0.373 0.373 0.373 fracstop 1.000 1.000 1.000 cjmean 2.966 2.966 2.966 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 175.7 175.9 175.8 kozaiamp 180.0 180.0 179.9