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: 07LE38 # Created Sun Nov 24 02:08:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 15.06y # First observation: 2007/06/12 # Last observation: 2022/07/04 # Chi-squared of fit: 58.70 DOF: 50 RMS: 0.26 # Min/Max residuals: -0.94 0.45 # Exact a, adot, b, bdot, g, gdot: 1.446041E-05 2.430939E-02 7.499053E-06 1.002594E-02 2.441438E-02 1.195479E-04 # Covariance matrix: 1.2803E-13 -5.5322E-14 1.9933E-14 -1.9225E-14 -6.7374E-15 -1.3373E-13 -5.5322E-14 5.3551E-14 -2.2891E-14 2.0689E-14 -3.3989E-14 1.4494E-13 1.9933E-14 -2.2891E-14 8.9720E-14 -1.7436E-14 2.3569E-14 -6.4909E-14 -1.9225E-14 2.0689E-14 -1.7436E-14 1.0833E-14 -1.2725E-14 5.8684E-14 -6.7374E-15 -3.3989E-14 2.3569E-14 -1.2725E-14 2.9266E-13 -9.5863E-14 -1.3373E-13 1.4494E-13 -6.4909E-14 5.8684E-14 -9.5863E-14 4.1109E-13 # lat0 lon0 xBary yBary zBary JD0 29.723755 -116.954788 -0.310510 0.476924 -0.835225 2454263.834094 # Heliocentric elements and errors Epoch: 2454264.5000 = 2007/06/13 Mean Anomaly: 1.26585 +/- 0.004 Argument of Peri: 53.77861 +/- 0.007 Long of Asc Node: 193.46725 +/- 0.000 Inclination: 35.93712 +/- 0.000 Eccentricity: 0.23368843 +/- 0.0001 Semi-Major Axis: 54.54375905 +/- 0.0076 Time of Perihelion: 2453747.1355 +/- 1.7 Perihelion: 41.79751385 +/- 0.0076 Aphelion: 67.29000426 +/- 0.0106 Period (y) 402.8337 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -16.28357352 +/- 0.0004 Ecliptic Y -32.70890849 +/- 0.0007 Ecliptic Z 20.30877543 +/- 0.0004 Ecliptic XDOT 0.00268347 +/- 0.0000 Ecliptic YDOT -0.00075175 +/- 0.0000 Ecliptic ZDOT 0.00098294 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.80279199 +/- 0.0006 Geocenter to KBO 40.95950308 +/- 0.0009 # Hcoef: 7.07
The following table shows the complete astrometric record for 07LE38. 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 (07LE38) followed by the observatory code and reference code for the source of the astrometry.
2007 06 12.33334 16 26 11.69 +08 27 09.5 23.2r 07LE38 568 C~1Q3Y 2007 06 12.37405 16 26 11.51 +08 27 09.7 23.4r 07LE38 568 C~1Q3Y 2007 06 12.41449 16 26 11.31 +08 27 10.0 23.2r 07LE38 568 C~1Q3Z 2008 05 05.56122 16 34 59.96 +08 33 51.4 23.2r 07LE38 568 C~1Q3Z 2008 05 05.59157 16 34 59.83 +08 33 52.4 22.9r 07LE38 568 C~1Q3Z 2008 05 05.59732 16 34 59.81 +08 33 52.6 23.0r 07LE38 568 C~1Q3Z 2008 05 07.40731 16 34 52.18 +08 34 48.9 23.0r 07LE38 568 C~1Q3Z 2008 05 07.43658 16 34 52.08 +08 34 49.7 23.3r 07LE38 568 C~1Q3Z 2008 05 07.46599 16 34 51.95 +08 34 50.6 23.2r 07LE38 568 C~1Q3Z 2008 05 29.54061 16 33 11.48 +08 43 22.4 23.2r 07LE38 568 C~1Q3Z 2008 05 29.58747 16 33 11.26 +08 43 23.2 07LE38 568 C~1Q3Z 2008 05 29.59011 16 33 11.25 +08 43 22.9 07LE38 568 C~1Q3Z 2008 06 01.51911 16 32 57.41 +08 44 05.1 07LE38 568 C~1Q3Z 2008 06 07.13001 16 32 31.02 +08 45 06.9 07LE38 807 C~1Q3Z 2008 06 08.14000 16 32 26.28 +08 45 15.3 07LE38 807 C~1Q3Z 2008 06 08.20264 16 32 25.97 +08 45 15.8 07LE38 807 C~1Q3Z 2008 08 04.27450 16 29 09.60 +08 33 27.1 07LE38 568 C~1Q3Z 2008 08 04.31068 16 29 09.54 +08 33 26.0 07LE38 568 C~1Q3Z 2008 08 04.34565 16 29 09.48 +08 33 24.9 07LE38 568 C~1Q3Z 2009 06 20.27733 16 37 30.84 +09 04 12.3 07LE38 695 C~1Q3Z 2009 06 20.35594 16 37 30.47 +09 04 12.6 07LE38 695 C~1Q3Z 2009 06 22.32366 16 37 21.84 +09 04 09.1 07LE38 695 C~1Q3Z 2015 05 22.38998 17 15 37.27 +10 39 34.1 23.2R 07LE38 695 C~1hU4 2015 05 22.44187 17 15 37.02 +10 39 35.4 07LE38 695 C~1hU4 2018 04 18.386230 17 35 23.49 +11 03 41.5 23.4G 07LE38 705 C~2rXm 2018 04 18.467650 17 35 23.31 +11 03 45.1 23.3G 07LE38 705 C~2rXm 2022 07 04.313060 17 53 57.710 +12 22 48.15 23.4G 07LE38 G37 C~5i1b 2022 07 04.379470 17 53 57.403 +12 22 47.65 07LE38 G37 C~5i1b
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 0.23 0.00 -0.25
2 0.0001 0.00 0.37 0.00 -0.27
3 0.0002 0.00 0.19 0.00 -0.19
4 0.8986 0.00 0.11 0.00 0.03
5 0.8987 0.00 0.09 0.00 0.08
6 0.8987 0.00 0.16 0.00 0.10
7 0.9037 0.00 -0.19 0.00 0.18
8 0.9038 0.00 0.21 0.00 0.09
9 0.9039 0.00 0.17 0.00 0.09
10 0.9643 0.00 -0.04 0.00 0.37
11 0.9644 0.00 0.01 0.00 0.45
12 0.9644 0.00 0.05 0.00 0.11
13 0.9724 0.00 -0.24 0.00 0.43
14 0.9878 0.00 -0.42 0.00 -0.08
15 0.9906 0.00 -0.74 0.00 -0.32
16 0.9907 0.00 -0.94 0.00 -0.33
17 1.1470 0.00 0.20 0.00 -0.05
18 1.1471 0.00 0.18 0.00 -0.06
19 1.1472 0.00 0.11 0.00 -0.10
20 2.0231 0.00 0.05 0.00 -0.17
21 2.0233 0.00 -0.18 0.00 0.19
22 2.0287 0.00 0.37 0.00 -0.25
23 7.9427 0.00 0.18 0.00 0.03
24 7.9428 0.00 -0.06 0.00 0.11
25 10.8502 0.00 0.05 0.00 -0.21
26 10.8505 0.00 0.06 0.00 -0.20
27 15.0609 0.00 -0.07 0.00 0.05
28 15.0610 0.00 -0.04 0.00 0.13
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.
07LE38 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 53.727 53.727 53.727 ecceobj 0.222 0.222 0.222 incobj 36.036 36.036 36.036 qmin 40.925 40.923 40.928 qmax 67.887 67.896 67.907 amean 54.116 54.116 54.116 amin 53.619 53.617 53.619 amax 54.709 54.709 54.720 emean 0.226 0.226 0.226 emin 0.211 0.211 0.211 emax 0.241 0.241 0.241 imean 35.940 35.940 35.940 imin 35.659 35.659 35.657 imax 36.274 36.270 36.275 excite_mean 0.629 0.629 0.629 fracstop 1.000 1.000 1.000 cjmean 2.671 2.671 2.671 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 195.7 195.7 195.7 kozaiamp 180.0 180.0 180.0