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 Sun Dec 22 02:08:41 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 23 observations of 24 # Arc: 18.01y # First observation: 2004/07/24 # Last observation: 2022/07/29 # Chi-squared of fit: 15.57 DOF: 40 RMS: 0.15 # Min/Max residuals: -0.35 0.21 # Exact a, adot, b, bdot, g, gdot: 1.457463E-05 2.456554E-02 5.771285E-06 1.038024E-02 2.649424E-02 -1.661429E-03 # Covariance matrix: 1.4113E-13 -3.2785E-14 1.2345E-14 -1.0851E-14 -2.6053E-14 -5.1264E-14 -3.2785E-14 4.1883E-14 -1.9700E-14 1.7450E-14 -6.8467E-14 8.2573E-14 1.2345E-14 -1.9700E-14 1.1585E-13 -1.5349E-14 3.3417E-14 -3.9802E-14 -1.0851E-14 1.7450E-14 -1.5349E-14 8.4569E-15 -2.9915E-14 3.5259E-14 -2.6053E-14 -6.8467E-14 3.3417E-14 -2.9915E-14 3.7569E-13 -1.4187E-13 -5.1264E-14 8.2573E-14 -3.9802E-14 3.5259E-14 -1.4187E-13 1.6685E-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: 267.49482 +/- 0.096 Argument of Peri: 95.11108 +/- 0.082 Long of Asc Node: 289.16944 +/- 0.000 Inclination: 22.98342 +/- 0.000 Eccentricity: 0.05328063 +/- 0.0000 Semi-Major Axis: 38.52190736 +/- 0.0038 Time of Perihelion: 2475650.5415 +/- 25.1 Perihelion: 36.46943598 +/- 0.0037 Aphelion: 40.57437874 +/- 0.0041 Period (y) 239.0947 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 10.65728072 +/- 0.0002 Ecliptic Y -37.21338752 +/- 0.0008 Ecliptic Z -0.91322080 +/- 0.0000 Ecliptic XDOT 0.00240434 +/- 0.0000 Ecliptic YDOT 0.00081429 +/- 0.0000 Ecliptic ZDOT 0.00107662 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.72015335 +/- 0.0008 Geocenter to KBO 37.74411723 +/- 0.0009 # Hcoef: 6.69
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 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 0.09
2 0.0001 0.00 -0.10 0.00 0.14
3 0.0002 0.00 -0.01 0.00 0.12
4 0.0027 0.00 0.02 0.00 0.09
5 0.1309 0.00 -0.05 0.00 0.18
6 0.1310 0.00 0.02 0.00 0.18
7 0.1311 0.00 -0.03 0.00 0.08
8 0.8845 0.00 -0.03 0.00 -0.19
9 0.8845 0.00 -0.16 0.00 -0.09
10 0.8872 0.00 0.08 0.00 0.18
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 0.00 0.00 -0.01
15 3.7757 0.00 0.04 0.00 -0.08
16 3.7757 0.00 0.06 0.00 -0.08
17 12.9444 0.00 -0.04 0.00 0.18
18 12.9445 0.00 -0.09 0.00 0.17
19 17.9437 0.00 ( 3.61) 0.00 ( 0.11)
20 17.9439 0.00 -0.05 0.00 0.19
21 18.0121 0.00 -0.24 0.00 0.07
22 18.0121 0.00 0.19 0.00 -0.14
23 18.0122 0.00 -0.11 0.00 0.09
24 18.0122 0.00 0.21 0.00 -0.35
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 35.874 35.867 35.903 qmax 41.570 41.556 41.538 amean 38.635 38.632 38.632 amin 38.352 38.350 38.352 amax 38.955 38.927 38.921 emean 0.053 0.054 0.054 emin 0.041 0.041 0.041 emax 0.068 0.068 0.068 imean 24.566 24.564 24.565 imin 23.873 23.878 23.875 imax 25.272 25.264 25.270 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 178.0 178.1 177.9 kozaiamp 179.9 179.9 180.0