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: 07LG38 # Created Sun Dec 22 02:09:00 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 46 observations of 46 # Arc: 14.07y # First observation: 2005/05/12 # Last observation: 2019/06/06 # Chi-squared of fit: 66.18 DOF: 86 RMS: 0.21 # Min/Max residuals: -0.56 0.44 # Exact a, adot, b, bdot, g, gdot: 2.100093E-05 4.247737E-02 -6.561481E-07 -2.417001E-03 3.218954E-02 4.297411E-03 # Covariance matrix: 1.7251E-13 -6.0985E-14 3.2358E-15 2.3746E-15 2.3019E-14 -8.2856E-14 -6.0985E-14 3.6727E-14 8.3505E-15 -2.2341E-15 2.2036E-14 5.5369E-14 3.2358E-15 8.3505E-15 7.4409E-14 -8.6404E-15 3.8461E-14 1.4440E-14 2.3746E-15 -2.2341E-15 -8.6404E-15 2.0199E-15 -3.5849E-15 -3.6231E-15 2.3019E-14 2.2036E-14 3.8461E-14 -3.5849E-15 1.3145E-13 3.9178E-14 -8.2856E-14 5.5369E-14 1.4440E-14 -3.6231E-15 3.9178E-14 8.8017E-14 # lat0 lon0 xBary yBary zBary JD0 33.443333 -124.502680 0.063585 0.554023 -0.838714 2453502.915789 # Heliocentric elements and errors Epoch: 2453502.5000 = 2005/05/12 Mean Anomaly: 6.69689 +/- 0.001 Argument of Peri: 75.92158 +/- 0.002 Long of Asc Node: 139.55385 +/- 0.000 Inclination: 32.57911 +/- 0.000 Eccentricity: 0.44013025 +/- 0.0000 Semi-Major Axis: 56.05282766 +/- 0.0050 Time of Perihelion: 2450651.0513 +/- 0.6 Perihelion: 31.38228263 +/- 0.0037 Aphelion: 80.72337270 +/- 0.0077 Period (y) 419.6667 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -15.30916659 +/- 0.0002 Ecliptic Y -22.15604076 +/- 0.0002 Ecliptic Z 17.12086629 +/- 0.0002 Ecliptic XDOT 0.00274111 +/- 0.0000 Ecliptic YDOT -0.00239827 +/- 0.0000 Ecliptic ZDOT 0.00002995 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.91207625 +/- 0.0002 Geocenter to KBO 31.06596060 +/- 0.0003 # Hcoef: 8.25
The following table shows the complete astrometric record for 07LG38. 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 (07LG38) followed by the observatory code and reference code for the source of the astrometry.
2005 05 12.415046 16 03 42.39 +13 25 15.1 07LG38 645 C~1rRH 2005 05 12.415463 16 03 42.38 +13 25 15.1 07LG38 645 C~1rRH 2005 05 12.415880 16 03 42.38 +13 25 15.2 07LG38 645 C~1rRH 2005 05 12.416296 16 03 42.38 +13 25 15.2 07LG38 645 C~1rRH 2005 05 14.324675 16 03 31.17 +13 25 58.8 22.9V 07LG38 645 C~1S6z 2005 05 14.325504 16 03 31.17 +13 25 58.8 22.7V 07LG38 645 C~1S6z 2005 05 14.327992 16 03 31.13 +13 25 58.8 23.3V 07LG38 645 C~1S6z 2007 06 12.31068 16 19 41.24 +12 04 26.5 22.8r 07LG38 568 C~1QdL 2007 06 12.35111 16 19 40.99 +12 04 26.2 23.1r 07LG38 568 C~1QdL 2007 06 12.39169 16 19 40.75 +12 04 26.0 22.9r 07LG38 568 C~1QdL 2007 07 27.35903 16 16 26.42 +11 42 30.1 22.8r 07LG38 568 C~1QdL 2007 07 27.38536 16 16 26.36 +11 42 29.0 22.8r 07LG38 568 C~1QdL 2007 07 27.40293 16 16 26.32 +11 42 28.0 23.0r 07LG38 568 C~1QdL 2007 09 11.18435 16 16 41.28 +10 56 06.6 22.3r 07LG38 695 C~1QdL 2007 09 16.16195 16 16 58.12 +10 50 35.1 07LG38 675 C~1QdL 2007 09 17.12940 16 17 01.73 +10 49 30.8 07LG38 675 C~1QdL 2007 09 17.13912 16 17 01.74 +10 49 30.4 07LG38 675 C~1QdL 2007 09 17.14418 16 17 01.77 +10 49 30.0 07LG38 675 C~1QdL 2007 09 17.14902 16 17 01.78 +10 49 29.8 07LG38 675 C~1QdL 2007 10 07.21790 16 18 39.47 +10 27 57.7 07LG38 568 C~1QdL 2007 10 07.23209 16 18 39.59 +10 27 56.8 07LG38 568 C~1QdL 2007 10 07.24624 16 18 39.66 +10 27 55.7 07LG38 568 C~1QdL 2008 05 03.39735 16 32 42.70 +11 11 29.7 07LG38 695 C~1QdL 2008 05 03.40223 16 32 42.68 +11 11 29.9 07LG38 695 C~1QdL 2008 05 04.38103 16 32 37.62 +11 12 01.8 07LG38 695 C~1QdL 2008 05 07.39140 16 32 21.72 +11 13 35.7 23.1r 07LG38 568 C~1QdL 2008 05 07.42058 16 32 21.57 +11 13 36.6 23.0r 07LG38 568 C~1QdL 2008 05 07.45007 16 32 21.40 +11 13 37.4 22.9r 07LG38 568 C~1QdL 2008 05 29.55925 16 30 14.38 +11 20 44.2 23.1r 07LG38 568 C~1QdL 2008 05 29.60410 16 30 14.11 +11 20 44.5 07LG38 568 C~1QdL 2008 05 29.60673 16 30 14.10 +11 20 44.5 07LG38 568 C~1QdL 2008 06 08.17127 16 29 17.49 +11 21 16.5 07LG38 807 C~1QdL 2008 06 08.22061 16 29 17.18 +11 21 16.2 07LG38 807 C~1QdL 2008 08 04.27899 16 25 17.69 +10 52 54.1 07LG38 568 C~1QdL 2008 08 04.31532 16 25 17.63 +10 52 52.1 07LG38 568 C~1QdL 2008 08 04.35028 16 25 17.58 +10 52 50.2 07LG38 568 C~1QdL 2009 06 20.27071 16 37 17.38 +10 36 00.9 07LG38 695 C~1QdL 2009 06 20.36429 16 37 16.82 +10 36 00.0 07LG38 695 C~1QdL 2009 06 22.31601 16 37 06.10 +10 35 32.2 07LG38 695 C~1QdL 2015 05 22.38609 17 31 29.99 +06 07 00.2 22.9R 07LG38 695 C~1hU4 2015 05 22.43850 17 31 29.73 +06 07 01.2 07LG38 695 C~1hU4 2019 05 06.368410 18 03 48.05 +03 07 18.4 27.2G 07LG38 705 C~39nr 2019 05 06.441630 18 03 47.80 +03 07 19.8 24.4G 07LG38 705 C~39nr 2019 05 07.373990 18 03 44.53 +03 07 43.4 24.5G 07LG38 705 C~39nr 2019 06 06.363640 18 01 27.454 +03 15 33.73 24.6G 07LG38 G37 C~36kc 2019 06 06.405220 18 01 27.229 +03 15 33.91 07LG38 G37 C~36kc
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 -0.05 0.00 -0.10
2 0.0000 0.00 -0.17 0.00 -0.11
3 0.0000 0.00 -0.13 0.00 -0.02
4 0.0000 0.00 -0.09 0.00 -0.03
5 0.0052 0.00 -0.02 0.00 -0.36
6 0.0052 0.00 0.06 0.00 -0.38
7 0.0052 0.00 -0.32 0.00 -0.43
8 2.0832 0.00 0.32 0.00 0.25
9 2.0833 0.00 0.10 0.00 0.21
10 2.0834 0.00 0.05 0.00 0.27
11 2.2066 0.00 -0.25 0.00 0.18
12 2.2066 0.00 -0.18 0.00 0.38
13 2.2067 0.00 -0.15 0.00 0.25
14 2.3320 0.00 0.01 0.00 -0.04
15 2.3456 0.00 0.35 0.00 0.03
16 2.3483 0.00 0.43 0.00 0.00
17 2.3483 0.00 0.04 0.00 0.25
18 2.3483 0.00 0.21 0.00 0.19
19 2.3483 0.00 0.09 0.00 0.31
20 2.4033 0.00 -0.50 0.00 -0.31
21 2.4033 0.00 0.05 0.00 -0.34
22 2.4034 0.00 -0.14 0.00 -0.56
23 2.9760 0.00 -0.12 0.00 -0.08
24 2.9760 0.00 -0.04 0.00 -0.04
25 2.9787 0.00 -0.03 0.00 -0.15
26 2.9869 0.00 -0.08 0.00 0.32
27 2.9870 0.00 0.06 0.00 0.35
28 2.9871 0.00 -0.07 0.00 0.27
29 3.0476 0.00 0.18 0.00 -0.04
30 3.0477 0.00 0.17 0.00 -0.10
31 3.0478 0.00 0.26 0.00 -0.12
32 3.0739 0.00 0.08 0.00 -0.01
33 3.0741 0.00 -0.16 0.00 -0.22
34 3.2303 0.00 -0.17 0.00 0.09
35 3.2304 0.00 -0.11 0.00 0.04
36 3.2305 0.00 0.05 0.00 0.02
37 4.1064 0.00 0.44 0.00 -0.04
38 4.1066 0.00 -0.06 0.00 0.29
39 4.1120 0.00 -0.06 0.00 -0.05
40 10.0259 0.00 -0.26 0.00 0.18
41 10.0261 0.00 -0.01 0.00 0.27
42 13.9821 0.00 -0.09 0.00 0.19
43 13.9823 0.00 0.07 0.00 -0.29
44 13.9848 0.00 0.15 0.00 -0.37
45 14.0669 0.00 -0.11 0.00 -0.07
46 14.0671 0.00 -0.11 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.
07LG38 quality flag:3 Type: 5:2EEE 5:2EEE 5:2EEE axisobj 54.919 54.919 54.919 ecceobj 0.429 0.429 0.429 incobj 32.588 32.588 32.588 qmin 30.842 30.842 30.842 qmax 81.234 81.233 81.234 amean 55.460 55.460 55.460 amin 54.825 54.825 54.825 amax 56.305 56.304 56.306 emean 0.419 0.419 0.419 emin 0.375 0.375 0.375 emax 0.444 0.444 0.444 imean 31.997 31.996 31.997 imin 31.118 31.118 31.118 imax 33.705 33.703 33.707 excite_mean 0.675 0.675 0.675 fracstop 1.000 1.000 1.000 cjmean 2.633 2.633 2.633 libcent 0 181.0 181.0 181.0 libamp 0 50.0 50.1 50.0 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 55.4 55.4 55.4 kozaiamp 23.2 23.2 23.2