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: 04OP15 # Created Wed Mar 26 01:08:42 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 29 observations of 30 # Arc: 18.01y # First observation: 2004/07/24 # Last observation: 2022/07/29 # Chi-squared of fit: 16.52 DOF: 52 RMS: 0.13 # Min/Max residuals: -0.33 0.24 # Exact a, adot, b, bdot, g, gdot: 1.456280E-05 2.456553E-02 5.809759E-06 1.038022E-02 2.649432E-02 -1.661428E-03 # Covariance matrix: 1.4086E-13 -3.1651E-14 1.2192E-14 -1.0594E-14 -2.9361E-14 -4.8569E-14 -3.1651E-14 3.3740E-14 -1.5731E-14 1.3758E-14 -4.2505E-14 6.3077E-14 1.2192E-14 -1.5731E-14 1.1288E-13 -1.2884E-14 1.9568E-14 -2.9982E-14 -1.0594E-14 1.3758E-14 -1.2884E-14 6.3595E-15 -1.7377E-14 2.6220E-14 -2.9361E-14 -4.2505E-14 1.9568E-14 -1.7377E-14 2.9223E-13 -7.9689E-14 -4.8569E-14 6.3077E-14 -2.9982E-14 2.6220E-14 -7.9689E-14 1.2021E-13 # lat0 lon0 xBary yBary zBary JD0 -1.386796 -74.440386 -0.287546 -0.023612 -0.977503 2453210.931503 # Heliocentric elements and errors Epoch: 2453210.5000 = 2004/07/24 Mean Anomaly: 267.48477 +/- 0.059 Argument of Peri: 95.12111 +/- 0.068 Long of Asc Node: 289.16945 +/- 0.000 Inclination: 22.98337 +/- 0.000 Eccentricity: 0.05328149 +/- 0.0000 Semi-Major Axis: 38.52144474 +/- 0.0036 Time of Perihelion: 2475652.5752 +/- 17.1 Perihelion: 36.46896488 +/- 0.0036 Aphelion: 40.57392460 +/- 0.0039 Period (y) 239.0904 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 10.65725252 +/- 0.0002 Ecliptic Y -37.21328794 +/- 0.0008 Ecliptic Z -0.91321684 +/- 0.0000 Ecliptic XDOT 0.00240433 +/- 0.0000 Ecliptic YDOT 0.00081429 +/- 0.0000 Ecliptic ZDOT 0.00107662 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.72004979 +/- 0.0007 Geocenter to KBO 37.74401367 +/- 0.0008 # Hcoef: 6.68
The following table shows the complete astrometric record for 04OP15. 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 (04OP15) followed by the observatory code and reference code for the source of the astrometry.
2004 07 24.43076 19 08 13.84 -23 54 33.9 22.9g 04OP15 568 C~0V8G 2004 07 24.45637 19 08 13.69 -23 54 33.9 23.2g 04OP15 568 C~0V8G 2004 07 24.49529 19 08 13.48 -23 54 34.0 23.2g 04OP15 568 C~0V8G 2004 07 25.41657 19 08 08.46 -23 54 36.1 04OP15 568 C~0V8G 2004 09 10.23503 19 05 01.19 -23 53 51.7 04OP15 568 C~0V8G 2004 09 10.27976 19 05 01.10 -23 53 51.5 04OP15 568 C~0V8G 2004 09 10.32099 19 05 01.01 -23 53 51.4 04OP15 568 C~0V8G 2005 06 12.48541 19 17 54.28 -23 05 52.2 04OP15 568 C~0V8G 2005 06 12.51114 19 17 54.14 -23 05 52.2 23.0r 04OP15 568 C~0V8G 2005 06 13.49081 19 17 49.24 -23 05 55.8 22.3r 04OP15 568 C~0V8G 2006 07 03.44518 19 21 46.48 -22 20 20.7 22.6r 04OP15 568 C~0V8G 2006 07 03.46648 19 21 46.37 -22 20 21.0 22.5r 04OP15 568 C~0V8G 2006 07 03.48762 19 21 46.24 -22 20 21.1 22.5r 04OP15 568 C~0V8G 2008 05 03.42233 19 36 59.78 -20 41 47.7 04OP15 695 C~0V8G 2008 05 03.48886 19 36 59.69 -20 41 47.5 04OP15 695 C~0V8G 2008 05 03.48986 19 36 59.69 -20 41 47.5 04OP15 695 C~0V8G 2017 07 04.36960 20 21 59.19 -12 52 00.2 22.5R 04OP15 G37 C~2IX9 2017 07 04.40848 20 21 58.99 -12 52 00.5 04OP15 G37 C~2IX9 2022 06 29.27705 20 48 41.979 -08 08 53.64 22.9g 04OP15 269 C~8iQU 2022 06 29.27987 20 48 41.966 -08 08 53.62 22.2z 04OP15 269 C~8iQU 2022 06 29.28275 20 48 41.954 -08 08 53.63 22.3z 04OP15 269 C~8iQU 2022 06 29.28564 20 48 41.941 -08 08 53.65 22.1z 04OP15 269 C~8iQU 2022 06 29.28907 20 48 41.927 -08 08 53.65 23.0g 04OP15 269 C~8iQU 2022 06 29.29151 20 48 41.917 -08 08 53.67 22.5r 04OP15 269 C~8iQU 2022 07 04.360520 20 48 19.569 -08 09 14.41 21.6G 04OP15 G37 C~5i19 2022 07 04.425570 20 48 19.021 -08 09 14.67 04OP15 G37 C~5i19 2022 07 29.353647 20 46 13.357 -08 13 26.62 22.3w 04OP15 F52 C~5iht 2022 07 29.365730 20 46 13.320 -08 13 27.00 22.3w 04OP15 F52 C~5iht 2022 07 29.377880 20 46 13.235 -08 13 26.95 22.4w 04OP15 F52 C~5iht 2022 07 29.390057 20 46 13.190 -08 13 27.57 22.6w 04OP15 F52 C~5iht
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 0.01 0.00 0.08
2 0.0001 0.00 -0.10 0.00 0.13
3 0.0002 0.00 -0.00 0.00 0.11
4 0.0027 0.00 0.02 0.00 0.08
5 0.1309 0.00 -0.04 0.00 0.17
6 0.1310 0.00 0.03 0.00 0.17
7 0.1311 0.00 -0.02 0.00 0.07
8 0.8845 0.00 -0.03 0.00 -0.20
9 0.8845 0.00 -0.17 0.00 -0.10
10 0.8872 0.00 0.07 0.00 0.17
11 1.9412 0.00 0.01 0.00 -0.14
12 1.9412 0.00 0.19 0.00 -0.33
13 1.9413 0.00 0.06 0.00 -0.33
14 3.7755 0.00 -0.01 0.00 -0.00
15 3.7757 0.00 0.03 0.00 -0.07
16 3.7757 0.00 0.05 0.00 -0.07
17 12.9444 0.00 -0.06 0.00 0.23
18 12.9445 0.00 -0.10 0.00 0.21
19 17.9298 0.00 0.03 0.00 -0.08
20 17.9298 0.00 0.02 0.00 -0.05
21 17.9298 0.00 0.03 0.00 -0.05
22 17.9298 0.00 0.03 0.00 -0.06
23 17.9298 0.00 0.05 0.00 -0.05
24 17.9298 0.00 0.06 0.00 -0.06
25 17.9437 0.00 ( 3.55) 0.00 ( 0.16)
26 17.9439 0.00 -0.11 0.00 0.24
27 18.0121 0.00 -0.28 0.00 0.12
28 18.0121 0.00 0.14 0.00 -0.09
29 18.0122 0.00 -0.15 0.00 0.14
30 18.0122 0.00 0.16 0.00 -0.30
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.
04OP15 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 38.533 38.533 38.533 ecceobj 0.058 0.058 0.058 incobj 22.971 22.971 22.971 qmin 35.819 35.869 35.875 qmax 41.664 41.511 41.649 amean 38.650 38.631 38.638 amin 38.354 38.342 38.353 amax 38.964 38.921 38.944 emean 0.054 0.054 0.053 emin 0.041 0.041 0.039 emax 0.071 0.067 0.070 imean 24.568 24.565 24.574 imin 23.876 23.874 23.874 imax 25.289 25.275 25.278 excite_mean 0.419 0.419 0.419 fracstop 1.000 1.000 1.000 cjmean 2.837 2.837 2.837 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 178.8 177.9 178.8 kozaiamp 180.0 180.0 180.0