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: 437915 # Created Fri Nov 22 02:07:05 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 37 observations of 37 # Arc: 13.21y # First observation: 2002/04/07 # Last observation: 2015/06/23 # Chi-squared of fit: 91.70 DOF: 68 RMS: 0.28 # Min/Max residuals: -0.85 0.68 # Exact a, adot, b, bdot, g, gdot: 1.358256E-05 1.669536E-02 -1.465080E-06 -1.911941E-03 2.031567E-02 8.677443E-04 # 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 -0.836625 -150.460483 0.210416 -0.014372 -0.980922 2452371.672563 # Heliocentric elements and errors Epoch: 2452372.5000 = 2002/04/08 Mean Anomaly: 155.83764 +/- 0.000 Argument of Peri: 25.71927 +/- 0.000 Long of Asc Node: 22.17140 +/- 0.000 Inclination: 6.58701 +/- 0.000 Eccentricity: 0.13901779 +/- 0.0000 Semi-Major Axis: 44.44372810 +/- 0.0000 Time of Perihelion: 2405525.2584 +/- 0.0 Perihelion: 38.26525931 +/- 0.0000 Aphelion: 50.62219688 +/- 0.0000 Period (y) 296.2947 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.77650475 +/- 0.0000 Ecliptic Y -24.56124166 +/- 0.0000 Ecliptic Z -0.71880970 +/- 0.0000 Ecliptic XDOT 0.00100246 +/- 0.0000 Ecliptic YDOT -0.00201466 +/- 0.0000 Ecliptic ZDOT -0.00025912 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 50.20109925 +/- 0.0000 Geocenter to KBO 49.22309783 +/- 0.0000 # Hcoef: 6.12
The following table shows the complete astrometric record for 437915. 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 (437915) followed by the observatory code and reference code for the source of the astrometry.
2002 04 07.17182 13 48 40.55 -12 05 32.7 21.4R 437915 807 Cf5154 2002 04 07.23610 13 48 40.31 -12 05 31.6 437915 807 Cf5154 2002 04 08.20735 13 48 36.51 -12 05 11.5 437915 807 Cf5154 2002 04 08.97994 13 48 33.52 -12 04 55.6 437915 246 C~05Ct 2002 04 11.30825 13 48 24.30 -12 04 08.3 21.8R 437915 695 Cg5851 2002 04 11.39157 13 48 23.95 -12 04 06.4 437915 695 Cg5851 2002 04 11.39375 13 48 23.96 -12 04 06.3 21.8R 437915 568 Cf5154 2002 04 11.47633 13 48 23.63 -12 04 04.7 437915 568 Cf5154 2002 06 03.24289 13 45 12.94 -11 47 05.0 437915 675 Cf8972 2002 06 03.25451 13 45 12.92 -11 47 04.7 23.3R 437915 675 Cf8972 2002 06 03.31614 13 45 12.76 -11 47 03.7 23.6R 437915 675 Cf8972 2002 06 16.15825 13 44 43.16 -11 44 21.5 22.9R 437915 695 Cf8972 2002 06 17.15531 13 44 41.26 -11 44 10.9 22.3R 437915 695 Cf8972 2002 06 17.21782 13 44 41.14 -11 44 10.2 22.6R 437915 695 Cf8972 2003 03 07.49840 13 53 55.58 -12 40 33.4 22.9R 437915 662 Ch8264 2003 03 07.53733 13 53 55.47 -12 40 33.0 437915 662 Ch8264 2003 04 29.27157 13 50 43.83 -12 24 22.2 22.8R 437915 688 Ch8264 2003 04 29.34890 13 50 43.49 -12 24 20.5 437915 688 Ch8264 2005 04 10.36854 13 58 59.76 -13 22 54.4 22.3R 437915 695 Cn3092 2005 04 11.33662 13 58 55.97 -13 22 35.4 437915 695 Cn3092 2005 04 11.42230 13 58 55.62 -13 22 34.1 437915 695 Cn3092 2008 04 23.30657 14 08 44.96 -14 35 18.7 23.8R 437915 250 S~06AU 2008 04 23.31282 14 08 44.93 -14 35 18.5 437915 250 S~06AU 2008 04 23.36768 14 08 44.71 -14 35 17.5 437915 250 S~06AU 2008 04 23.37393 14 08 44.69 -14 35 17.3 437915 250 S~06AU 2014 04 23.25017 14 30 14.35 -17 02 28.9 437915 W84 C~1Tia 2014 04 24.27195 14 30 10.17 -17 02 10.3 24.2V 437915 W84 C~1Tia 2014 04 25.28852 14 30 06.01 -17 01 52.0 437915 W84 C~1Tia 2014 04 30.12098 14 29 46.17 -17 00 23.5 23.6V 437915 W84 C~2g28 2014 04 30.18992 14 29 45.87 -17 00 22.3 437915 W84 C~2g28 2014 05 01.10766 14 29 42.12 -17 00 05.3 437915 W84 C~2g28 2014 05 01.17743 14 29 41.82 -17 00 04.0 437915 W84 C~2g28 2014 05 30.21676 14 27 48.65 -16 51 13.6 22.8R 437915 695 C~1LJ7 2014 05 30.33705 14 27 48.23 -16 51 11.6 437915 695 C~1LJ7 2015 06 20.96229 14 30 19.88 -17 09 34.8 23.8V 437915 W84 C~498a 2015 06 20.99714 14 30 19.80 -17 09 34.3 437915 W84 C~498a 2015 06 23.97408 14 30 12.75 -17 08 57.6 437915 W84 C~498a
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 -0.12 0.00 0.04
2 0.0002 0.00 0.11 0.00 -0.16
3 0.0028 0.00 0.03 0.00 0.23
4 0.0050 0.00 0.66 0.00 0.58
5 0.0113 0.00 0.12 0.00 0.00
6 0.0116 0.00 -0.10 0.00 0.18
7 0.0116 0.00 0.05 0.00 0.20
8 0.0118 0.00 0.10 0.00 0.10
9 0.1563 0.00 -0.35 0.00 -0.16
10 0.1563 0.00 -0.17 0.00 -0.03
11 0.1565 0.00 -0.04 0.00 0.06
12 0.1916 0.00 0.39 0.00 -0.18
13 0.1943 0.00 -0.01 0.00 0.11
14 0.1945 0.00 -0.02 0.00 0.18
15 0.9153 0.00 -0.44 0.00 -0.24
16 0.9154 0.00 -0.48 0.00 -0.33
17 1.0598 0.00 0.03 0.00 -0.37
18 1.0600 0.00 -0.41 0.00 -0.28
19 3.0094 0.00 -0.04 0.00 -0.39
20 3.0121 0.00 0.28 0.00 -0.45
21 3.0123 0.00 0.18 0.00 -0.85
22 6.0455 0.00 0.20 0.00 0.61
23 6.0456 0.00 0.13 0.00 0.68
24 6.0457 0.00 0.16 0.00 0.60
25 6.0457 0.00 0.24 0.00 0.67
26 12.0440 0.00 0.20 0.00 -0.19
27 12.0468 0.00 0.06 0.00 0.03
28 12.0496 0.00 0.03 0.00 -0.05
29 12.0628 0.00 -0.08 0.00 -0.07
30 12.0630 0.00 -0.26 0.00 -0.14
31 12.0655 0.00 0.02 0.00 -0.13
32 12.0657 0.00 -0.11 0.00 -0.12
33 12.1452 0.00 -0.04 0.00 0.03
34 12.1456 0.00 0.08 0.00 -0.03
35 13.2041 0.00 -0.05 0.00 0.01
36 13.2042 0.00 0.07 0.00 0.07
37 13.2123 0.00 -0.14 0.00 -0.11
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.
437915 quality flag:3 Type: 9:5EEEE 9:5EEEE 9:5EEEE axisobj 44.244 44.244 44.244 ecceobj 0.143 0.143 0.143 incobj 6.610 6.610 6.610 qmin 37.804 37.805 37.804 qmax 51.733 51.734 51.732 amean 44.555 44.555 44.555 amin 44.161 44.161 44.160 amax 44.995 44.996 44.995 emean 0.137 0.137 0.137 emin 0.123 0.123 0.123 emax 0.150 0.150 0.150 imean 6.162 6.163 6.162 imin 5.323 5.323 5.322 imax 7.045 7.045 7.044 excite_mean 0.174 0.174 0.174 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.071 libcent 0 175.7 175.7 175.7 libamp 0 97.9 97.9 97.9 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 196.3 196.3 196.4 kozaiamp 180.0 180.0 180.0