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: 07TB418 # Created Wed Dec 25 02:08:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 14.16y # First observation: 2007/10/04 # Last observation: 2021/12/01 # Chi-squared of fit: 21.01 DOF: 58 RMS: 0.14 # Min/Max residuals: -0.34 0.72 # Exact a, adot, b, bdot, g, gdot: 1.086549E-05 1.225163E-02 8.225495E-07 2.761899E-04 1.694188E-02 -5.412752E-03 # Covariance matrix: 2.6522E-13 -6.1747E-14 1.4303E-15 -1.3023E-15 9.1773E-14 -2.6677E-13 -6.1747E-14 2.4640E-14 -9.3530E-16 6.3415E-16 -2.5421E-14 1.3552E-13 1.4303E-15 -9.3530E-16 1.6487E-13 -1.7411E-14 -4.9477E-16 -5.9035E-15 -1.3023E-15 6.3415E-16 -1.7411E-14 2.5117E-15 -8.4126E-16 3.8676E-15 9.1773E-14 -2.5421E-14 -4.9477E-16 -8.4126E-16 1.7374E-13 -1.3896E-13 -2.6677E-13 1.3552E-13 -5.9035E-15 3.8676E-15 -1.3896E-13 8.3120E-13 # lat0 lon0 xBary yBary zBary JD0 -6.512555 16.501234 0.100084 -0.112978 -0.990656 2454377.721394 # Heliocentric elements and errors Epoch: 2454378.5000 = 2007/10/05 Mean Anomaly: 285.50408 +/- 0.019 Argument of Peri: 42.60142 +/- 0.009 Long of Asc Node: 94.50392 +/- 0.002 Inclination: 6.54419 +/- 0.000 Eccentricity: 0.40691737 +/- 0.0001 Semi-Major Axis: 56.94653622 +/- 0.0048 Time of Perihelion: 2486859.5011 +/- 18.0 Perihelion: 33.77400168 +/- 0.0045 Aphelion: 80.11907076 +/- 0.0076 Period (y) 429.7434 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 57.21263981 +/- 0.0014 Ecliptic Y 16.84013213 +/- 0.0004 Ecliptic Z -6.69469248 +/- 0.0002 Ecliptic XDOT -0.00138449 +/- 0.0000 Ecliptic YDOT 0.00165158 +/- 0.0000 Ecliptic ZDOT 0.00014346 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 60.01442102 +/- 0.0013 Geocenter to KBO 59.02566681 +/- 0.0015 # Hcoef: 5.87
The following table shows the complete astrometric record for 07TB418. 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 (07TB418) followed by the observatory code and reference code for the source of the astrometry.
2007 10 04.22064 01 10 48.14 +00 28 09.8 23.2R 07TB418 807 Cx2653 2007 11 13.03643 01 08 42.88 +00 16 34.6 23.4R 07TB418 807 Cx2653 2007 11 13.05461 01 08 42.82 +00 16 34.4 22.9I 07TB418 807 Cx2653 2007 11 15.03460 01 08 37.47 +00 16 10.0 23.3R 07TB418 807 Cx2653 2007 11 15.03977 01 08 37.45 +00 16 10.0 22.9I 07TB418 807 Cx2653 2007 11 17.02754 01 08 32.23 +00 15 46.8 23.4R 07TB418 807 Cx2653 2007 11 17.07006 01 08 32.12 +00 15 46.4 22.5I 07TB418 807 Cx2653 2007 12 01.11631 01 07 59.94 +00 13 44.4 23.3R 07TB418 807 Cx2653 2013 09 10.34945 01 27 58.612 +02 21 19.00 24.8g 07TB418 W84 C~4yH4 2013 09 10.36825 01 27 58.560 +02 21 18.78 23.7r 07TB418 W84 C~4yH4 2013 09 10.36963 01 27 58.561 +02 21 18.68 22.9i 07TB418 W84 C~4yH4 2013 11 08.19700 01 24 49.260 +02 02 11.78 24.0g 07TB418 W84 C~4yH4 2013 11 08.19838 01 24 49.255 +02 02 11.57 23.4r 07TB418 W84 C~4yH4 2013 11 08.21106 01 24 49.226 +02 02 11.28 23.2i 07TB418 W84 C~4yH4 2014 10 02.31747 01 29 39.408 +02 31 59.53 23.4r 07TB418 W84 C~4yH4 2014 10 02.31883 01 29 39.409 +02 31 59.63 23.3i 07TB418 W84 C~4yH4 2014 10 23.25560 01 28 28.200 +02 24 55.75 23.0r 07TB418 W84 C~4yH4 2014 10 28.21727 01 28 11.359 +02 23 23.64 23.6g 07TB418 W84 C~4yH4 2015 10 17.17378 01 31 37.835 +02 45 16.39 24.0r 07TB418 W84 C~4yH4 2016 08 16.37872 01 37 12.870 +03 23 08.13 23.1z 07TB418 W84 C~4yH4 2016 08 26.34061 01 36 56.586 +03 20 36.52 23.0r 07TB418 W84 C~4yH4 2016 08 30.34139 01 36 48.521 +03 19 28.82 24.2g 07TB418 W84 C~4yH4 2016 10 21.23668 01 34 10.906 +03 02 08.96 22.2i 07TB418 W84 C~4yH4 2016 10 29.16974 01 33 43.487 +02 59 39.69 23.4i 07TB418 W84 C~4yH4 2016 11 05.14793 01 33 20.053 +02 57 38.99 23.1r 07TB418 W84 C~4yH4 2017 08 27.37075 01 39 46.743 +03 38 59.63 23.5r 07TB418 W84 C~4yH4 2017 08 27.37212 01 39 46.747 +03 38 59.68 23.3i 07TB418 W84 C~4yH4 2017 08 27.37349 01 39 46.745 +03 38 59.43 24.3g 07TB418 W84 C~4yH4 2017 08 27.39283 01 39 46.703 +03 38 59.27 23.2z 07TB418 W84 C~4yH4 2021 12 01.101230 01 46 41.251 +04 27 05.92 23.3G 07TB418 G37 C~5J2E 2021 12 01.152590 01 46 41.108 +04 27 05.45 07TB418 G37 C~5J2E 2021 12 01.204530 01 46 40.961 +04 27 05.08 07TB418 G37 C~5J2E
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 0.15 0.00 -0.06
2 0.1090 0.00 0.07 0.00 0.03
3 0.1091 0.00 -0.07 0.00 0.06
4 0.1145 0.00 -0.01 0.00 -0.05
5 0.1145 0.00 -0.10 0.00 0.02
6 0.1199 0.00 0.04 0.00 -0.11
7 0.1201 0.00 0.07 0.00 -0.03
8 0.1585 0.00 -0.34 0.00 0.72
9 5.9360 0.00 -0.04 0.00 -0.16
10 5.9361 0.00 -0.05 0.00 -0.01
11 5.9361 0.00 0.02 0.00 -0.08
12 6.0971 0.00 0.00 0.00 0.11
13 6.0971 0.00 -0.01 0.00 -0.08
14 6.0972 0.00 0.16 0.00 -0.17
15 6.9955 0.00 -0.06 0.00 -0.19
16 6.9955 0.00 0.03 0.00 -0.06
17 7.0528 0.00 -0.13 0.00 -0.10
18 7.0664 0.00 0.04 0.00 -0.12
19 8.0355 0.00 0.17 0.00 0.03
20 8.8683 0.00 0.06 0.00 -0.02
21 8.8956 0.00 0.06 0.00 0.02
22 8.9066 0.00 0.13 0.00 0.16
23 9.0486 0.00 0.21 0.00 -0.15
24 9.0704 0.00 -0.05 0.00 -0.12
25 9.0895 0.00 0.15 0.00 0.05
26 9.8977 0.00 -0.10 0.00 -0.02
27 9.8977 0.00 0.00 0.00 0.05
28 9.8977 0.00 0.01 0.00 -0.18
29 9.8978 0.00 -0.04 0.00 -0.02
30 14.1598 0.00 -0.00 0.00 0.12
31 14.1600 0.00 -0.08 0.00 0.14
32 14.1601 0.00 -0.20 0.00 0.27
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.
07TB418 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 57.623 57.622 57.623 ecceobj 0.406 0.406 0.407 incobj 6.539 6.539 6.539 qmin 32.553 32.381 32.647 qmax 98.497 92.178 82.535 amean 60.343 59.210 54.618 amin 56.549 54.501 51.118 amax 65.911 62.602 58.240 emean 0.445 0.434 0.380 emin 0.400 0.382 0.350 emax 0.495 0.472 0.418 imean 5.341 5.125 6.720 imin 3.894 2.773 4.613 imax 6.749 6.781 8.527 excite_mean 0.455 0.444 0.399 fracstop 1.000 1.000 1.000 cjmean 3.022 3.023 3.024 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 176.1 177.1 177.3 kozaiamp 180.0 180.0 180.0