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: 00WN183 # Created Sun Apr 27 01:08:13 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 16 observations of 16 # Arc: 5.90y # First observation: 2000/11/26 # Last observation: 2006/10/20 # Chi-squared of fit: 16.24 DOF: 26 RMS: 0.18 # Min/Max residuals: -0.41 0.42 # Exact a, adot, b, bdot, g, gdot: 1.473508E-05 2.112372E-02 5.660010E-07 1.252428E-03 2.275550E-02 -2.406874E-03 # Covariance matrix: 1.9284E-13 2.8417E-12 -1.6283E-14 1.6293E-13 8.5086E-13 2.1033E-11 2.8417E-12 1.9562E-09 -9.8778E-12 1.1008E-10 4.3276E-10 1.4214E-08 -1.6283E-14 -9.8778E-12 1.6660E-13 -5.7657E-13 -2.1908E-12 -7.1782E-11 1.6293E-13 1.1008E-10 -5.7657E-13 6.2118E-12 2.4358E-11 7.9989E-10 8.5086E-13 4.3276E-10 -2.1908E-12 2.4358E-11 9.6396E-11 3.1453E-09 2.1033E-11 1.4214E-08 -7.1782E-11 7.9989E-10 3.1453E-09 1.0329E-07 # lat0 lon0 xBary yBary zBary JD0 -2.229602 64.059795 -0.004034 -0.038273 -0.979717 2451874.628143 # Heliocentric elements and errors Epoch: 2451874.5000 = 2000/11/26 Mean Anomaly: 278.43536 +/- 0.776 Argument of Peri: 61.69058 +/- 0.860 Long of Asc Node: 96.76982 +/- 0.009 Inclination: 4.03096 +/- 0.001 Eccentricity: 0.11239455 +/- 0.0151 Semi-Major Axis: 45.10853518 +/- 0.0454 Time of Perihelion: 2476946.3251 +/- 271.3 Perihelion: 40.03858165 +/- 0.6819 Aphelion: 50.17848871 +/- 0.6825 Period (y) 302.9677 +/- 0.46 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 19.63821921 +/- 0.0083 Ecliptic Y 40.37655303 +/- 0.0170 Ecliptic Z -1.70966404 +/- 0.0007 Ecliptic XDOT -0.00241738 +/- 0.0000 Ecliptic YDOT 0.00086121 +/- 0.0000 Ecliptic ZDOT 0.00016201 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.93167266 +/- 0.0157 Geocenter to KBO 43.94551835 +/- 0.0190 # Hcoef: 7.01
The following table shows the complete astrometric record for 00WN183. 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 (00WN183) followed by the observatory code and reference code for the source of the astrometry.
2000 11 26.12740 04 10 01.56 +18 46 04.8 22.9R 00WN183 809 Cc4044 2000 11 26.18511 04 10 01.25 +18 46 03.9 23.6R 00WN183 809 Cc4044 2000 11 26.23903 04 10 01.04 +18 46 03.2 22.9R 00WN183 809 Cc4044 2000 11 27.12684 04 09 56.71 +18 45 52.7 22.8R 00WN183 809 Cc4044 2000 11 27.18142 04 09 56.45 +18 45 52.0 23.0R 00WN183 809 Cc4044 2000 11 27.21127 04 09 56.30 +18 45 51.8 00WN183 809 Cc4044 2000 11 27.23691 04 09 56.18 +18 45 51.2 23.3R 00WN183 809 Cc4044 2000 11 27.26212 04 09 56.06 +18 45 51.2 22.9R 00WN183 809 Cc4044 2001 01 23.15625 04 06 16.63 +18 38 08.0 00WN183 675 Cc6726 2001 01 23.24722 04 06 16.42 +18 38 07.9 00WN183 675 Cc6726 2001 01 31.04270 04 06 03.11 +18 37 59.6 23.1R 00WN183 809 Cc6726 2001 01 31.07135 04 06 03.08 +18 37 59.6 23.1R 00WN183 809 Cc6726 2001 01 31.10090 04 06 03.04 +18 37 59.4 23.6R 00WN183 809 Cc6726 2006 10 19.43084 04 43 20.28 +20 28 56.0 23.6R 00WN183 695 Ct0288 2006 10 20.43435 04 43 17.04 +20 28 48.9 00WN183 695 Ct0288 2006 10 20.49007 04 43 16.86 +20 28 48.7 00WN183 695 Ct0288
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 -0.02 0.00 0.06
2 0.0002 0.00 -0.41 0.00 -0.15
3 0.0003 0.00 0.42 0.00 -0.19
4 0.0027 0.00 -0.14 0.00 0.04
5 0.0029 0.00 -0.01 0.00 -0.01
6 0.0030 0.00 -0.06 0.00 0.15
7 0.0030 0.00 0.04 0.00 -0.14
8 0.0031 0.00 0.09 0.00 0.17
9 0.1589 0.00 0.27 0.00 -0.34
10 0.1591 0.00 0.01 0.00 -0.23
11 0.1805 0.00 -0.23 0.00 0.26
12 0.1805 0.00 -0.07 0.00 0.27
13 0.1806 0.00 -0.04 0.00 0.08
14 5.8954 0.00 0.06 0.00 -0.00
15 5.8982 0.00 -0.06 0.00 -0.10
16 5.8983 0.00 0.03 0.00 0.10
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.
00WN183 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.061 45.061 45.061 ecceobj 0.111 0.111 0.111 incobj 4.033 4.033 4.033 qmin 38.923 38.892 38.877 qmax 50.947 51.037 50.980 amean 44.784 44.784 44.784 amin 44.414 44.417 44.406 amax 45.194 45.192 45.185 emean 0.113 0.113 0.113 emin 0.099 0.098 0.099 emax 0.128 0.129 0.129 imean 2.411 2.408 2.415 imin 1.733 1.733 1.733 imax 3.054 3.044 3.063 excite_mean 0.121 0.121 0.121 fracstop 1.000 1.000 1.000 cjmean 3.093 3.093 3.093 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 183.1 182.8 183.0 kozaiamp 179.9 179.9 179.9