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: 503858
# Created Sun Dec 22 02:07:15 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 25.29y
# First observation: 1998/04/28
# Last observation: 2023/08/14
# Chi-squared of fit: 66.99 DOF: 54 RMS: 0.26
# Min/Max residuals: -0.52 0.68
# Exact a, adot, b, bdot, g, gdot:
1.994546E-05 4.749450E-02 5.728940E-06 1.004683E-02 3.646669E-02 3.138906E-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
0.191942 -129.803039 0.220133 0.003072 -0.987615 2450931.999271
# Heliocentric elements and errors
Epoch: 2450932.5000 = 1998/04/29
Mean Anomaly: 7.77599 +/- 0.000
Argument of Peri: 346.48063 +/- 0.000
Long of Asc Node: 228.89320 +/- 0.000
Inclination: 11.95446 +/- 0.000
Eccentricity: 0.28242254 +/- 0.0000
Semi-Major Axis: 39.31336017 +/- 0.0000
Time of Perihelion: 2448987.7588 +/- 0.0
Perihelion: 28.21038121 +/- 0.0000
Aphelion: 50.41633914 +/- 0.0000
Period (y) 246.5009 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.34696183 +/- 0.0000
Ecliptic Y -21.68774381 +/- 0.0000
Ecliptic Z 0.09204935 +/- 0.0000
Ecliptic XDOT 0.00259213 +/- 0.0000
Ecliptic YDOT -0.00245302 +/- 0.0000
Ecliptic ZDOT 0.00075500 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 28.40732145 +/- 0.0000
Geocenter to KBO 27.42228164 +/- 0.0000
# Hcoef: 8.77
The following table shows the complete astrometric record for 503858. 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 (503858) followed by the observatory code and reference code for the source of the astrometry.
1998 04 28.49854 15 11 13.94 -17 36 31.8 23.0R 503858 568 Ca4825 1998 04 28.53791 15 11 13.66 -17 36 30.3 23.0R 503858 568 Ca4825 1998 04 28.57687 15 11 13.42 -17 36 29.2 23.0R 503858 568 Ca4825 1998 04 30.50541 15 11 00.76 -17 35 27.6 23.0R 503858 568 Ca4825 1998 04 30.53636 15 11 00.55 -17 35 26.5 23.0R 503858 568 Ca4825 1998 05 22.42736 15 08 34.68 -17 23 34.4 23.0R 503858 568 Ca4825 1998 05 22.43550 15 08 34.64 -17 23 34.2 23.0R 503858 568 Ca4825 1998 05 22.44365 15 08 34.58 -17 23 33.9 23.0R 503858 568 Ca4825 1998 06 30.44314 15 05 07.21 -17 05 54.8 23.0R 503858 568 Ca4825 1998 07 01.42272 15 05 03.78 -17 05 35.5 23.0R 503858 568 Ca4825 1999 03 14.59369 15 26 23.54 -18 03 39.2 23.0R 503858 568 Ca4825 1999 03 14.65306 15 26 23.40 -18 03 38.4 23.0R 503858 568 Ca4825 1999 05 07.52390 15 21 52.58 -17 41 00.1 22.8R 503858 568 Ca4825 1999 05 07.55245 15 21 52.39 -17 40 59.2 22.8R 503858 568 Ca4825 1999 05 24.29213 15 20 00.22 -17 32 20.3 22.9R 503858 697 Cb0746 1999 05 24.33071 15 19 59.95 -17 32 18.7 23.5R 503858 697 Cb0746 2000 05 07.50142 15 33 20.55 -17 47 12.5 22.9R 503858 568 Cb5091 2000 05 07.54326 15 33 20.26 -17 47 11.3 23.2R 503858 568 Cb5091 2015 06 12.36072 18 07 32.18 -15 00 40.6 22.3R 503858 695 C~1hTP 2015 06 12.38632 18 07 32.03 -15 00 40.5 503858 695 C~1hTP 2015 06 12.41209 18 07 31.88 -15 00 39.9 503858 695 C~1hTP 2015 06 12.42976 18 07 31.77 -15 00 39.9 503858 695 C~1hTP 2017 07 04.32205 18 23 22.79 -14 14 01.3 22.8R 503858 G37 C~2IX3 2017 07 04.36665 18 23 22.48 -14 14 02.0 503858 G37 C~2IX3 2017 07 04.40494 18 23 22.23 -14 14 01.8 503858 G37 C~2IX3 2017 08 16.32820 18 19 39.386 -14 19 41.38 503858 568 C~2MYN 2017 08 25.30728 18 19 11.805 -14 21 34.32 503858 568 C~2MYN 2023 08 14.176390 19 10 06.309 -11 47 13.37 24.5G 503858 G37 C~78vI 2023 08 14.225270 19 10 06.082 -11 47 14.20 503858 G37 C~78vI 2023 08 14.273010 19 10 05.883 -11 47 15.29 503858 G37 C~78vI
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 -0.31
2 0.0001 0.00 -0.21 0.00 -0.07
3 0.0002 0.00 0.07 0.00 -0.22
4 0.0055 0.00 -0.18 0.00 -0.32
5 0.0056 0.00 -0.21 0.00 -0.22
6 0.0655 0.00 -0.10 0.00 -0.00
7 0.0655 0.00 0.11 0.00 -0.07
8 0.0656 0.00 0.02 0.00 -0.03
9 0.1723 0.00 -0.02 0.00 -0.19
10 0.1750 0.00 0.17 0.00 -0.22
11 0.8764 0.00 0.04 0.00 0.09
12 0.8765 0.00 0.10 0.00 -0.03
13 1.0240 0.00 -0.39 0.00 -0.15
14 1.0241 0.00 -0.33 0.00 -0.14
15 1.0699 0.00 0.36 0.00 -0.07
16 1.0700 0.00 0.19 0.00 0.35
17 2.0260 0.00 0.28 0.00 0.62
18 2.0261 0.00 0.19 0.00 0.57
19 17.1221 0.00 -0.40 0.00 0.26
20 17.1222 0.00 -0.21 0.00 0.22
21 17.1223 0.00 0.00 0.00 0.68
22 17.1223 0.00 0.04 0.00 0.58
23 19.1836 0.00 0.44 0.00 0.20
24 19.1838 0.00 0.02 0.00 -0.38
25 19.1839 0.00 -0.11 0.00 -0.08
26 19.3014 0.00 -0.05 0.00 -0.15
27 19.3260 0.00 -0.06 0.00 -0.14
28 25.2941 0.00 -0.06 0.00 -0.26
29 25.2943 0.00 -0.01 0.00 -0.25
30 25.2944 0.00 0.37 0.00 -0.52
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.
503858 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.144 39.144 39.144 ecceobj 0.280 0.280 0.280 incobj 11.972 11.972 11.972 qmin 26.743 26.743 26.744 qmax 52.764 52.764 52.764 amean 39.454 39.454 39.454 amin 39.067 39.067 39.067 amax 39.952 39.953 39.952 emean 0.292 0.292 0.292 emin 0.265 0.265 0.265 emax 0.322 0.322 0.322 imean 12.590 12.590 12.590 imin 10.960 10.961 10.960 imax 13.920 13.921 13.920 excite_mean 0.365 0.365 0.365 fracstop 1.000 1.000 1.000 cjmean 2.899 2.899 2.899 libcent 0 180.8 180.8 180.8 libamp 0 41.3 41.3 41.3 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 150.5 150.5 150.5 kozaiamp 180.0 180.0 180.0