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: 07LH38 # Created Fri Apr 19 01:12:56 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 44 observations of 44 # Arc: 11.90y # First observation: 2007/06/12 # Last observation: 2019/05/07 # Chi-squared of fit: 95.73 DOF: 82 RMS: 0.26 # Min/Max residuals: -0.66 0.64 # Exact a, adot, b, bdot, g, gdot: 2.072927E-05 3.529213E-02 -4.527004E-06 -9.719652E-03 2.735229E-02 -4.653163E-03 # Covariance matrix: 1.2327E-13 -4.5312E-14 -1.2782E-14 9.0176E-15 2.6079E-15 -7.6235E-14 -4.5312E-14 2.5443E-14 8.7009E-15 -5.9019E-15 8.2800E-16 4.9670E-14 -1.2782E-14 8.7009E-15 7.6390E-14 -1.3542E-14 1.9435E-14 2.1727E-14 9.0176E-15 -5.9019E-15 -1.3542E-14 4.7048E-15 -3.0889E-15 -1.3467E-14 2.6079E-15 8.2800E-16 1.9435E-14 -3.0889E-15 1.1295E-13 1.6052E-14 -7.6235E-14 4.9670E-14 2.1727E-14 -1.3467E-14 1.6052E-14 1.1209E-13 # lat0 lon0 xBary yBary zBary JD0 31.501180 -118.736075 -0.339991 0.497363 -0.811481 2454263.817694 # Heliocentric elements and errors Epoch: 2454264.5000 = 2007/06/13 Mean Anomaly: 358.36790 +/- 0.001 Argument of Peri: 130.00154 +/- 0.002 Long of Asc Node: 122.97459 +/- 0.000 Inclination: 34.18089 +/- 0.000 Eccentricity: 0.73344211 +/- 0.0001 Semi-Major Axis: 138.08782579 +/- 0.0345 Time of Perihelion: 2456951.5455 +/- 221.0 Perihelion: 36.80839947 +/- 0.0127 Aphelion: 239.36725212 +/- 0.0604 Period (y) 1622.7114 +/- 0.61 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -15.14708540 +/- 0.0002 Ecliptic Y -28.33619206 +/- 0.0003 Ecliptic Z 19.10309293 +/- 0.0002 Ecliptic XDOT 0.00305019 +/- 0.0000 Ecliptic YDOT -0.00179849 +/- 0.0000 Ecliptic ZDOT -0.00107298 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.38059334 +/- 0.0003 Geocenter to KBO 36.56015434 +/- 0.0004 # Hcoef: 7.73
The following table shows the complete astrometric record for 07LH38. 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 (07LH38) followed by the observatory code and reference code for the source of the astrometry.
2007 06 12.31694 16 21 26.83 +10 29 13.1 23.4r 07LH38 568 C~1QdL 2007 06 12.35740 16 21 26.62 +10 29 12.8 23.3r 07LH38 568 C~1QdL 2007 06 12.39798 16 21 26.42 +10 29 12.6 23.4r 07LH38 568 C~1QdL 2008 05 05.52392 16 32 12.04 +09 27 00.0 23.5r 07LH38 568 C~1QdL 2008 05 05.55313 16 32 11.90 +09 27 00.7 23.3r 07LH38 568 C~1QdL 2008 05 05.58328 16 32 11.76 +09 27 01.4 23.3r 07LH38 568 C~1QdL 2008 05 29.54062 16 30 12.80 +09 32 34.7 23.5r 07LH38 568 C~1QdL 2008 05 29.58748 16 30 12.56 +09 32 34.8 23.7r 07LH38 568 C~1QdL 2008 05 29.59011 16 30 12.53 +09 32 35.1 23.4r 07LH38 568 C~1QdL 2008 06 01.51911 16 29 57.42 +09 32 43.5 07LH38 568 C~1QdL 2008 06 07.14778 16 29 28.46 +09 32 39.8 07LH38 807 C~1QdL 2008 06 07.29383 16 29 27.73 +09 32 39.7 23.0 07LH38 807 C~1QdL 2008 06 08.11565 16 29 23.55 +09 32 36.9 07LH38 807 C~1QdL 2008 06 08.19344 16 29 23.12 +09 32 36.4 07LH38 807 C~1QdL 2008 08 04.27040 16 25 53.07 +09 06 26.6 07LH38 568 C~1QdL 2008 08 04.30671 16 25 53.01 +09 06 25.0 07LH38 568 C~1QdL 2008 08 04.34168 16 25 53.00 +09 06 24.0 07LH38 568 C~1QdL 2009 06 22.28696 16 35 54.48 +08 32 27.1 07LH38 695 C~1QdL 2009 06 22.35045 16 35 54.18 +08 32 26.1 07LH38 695 C~1QdL 2009 07 24.18582 16 33 51.27 +08 17 34.4 07LH38 675 C~1QdL 2009 07 24.21831 16 33 51.17 +08 17 33.3 07LH38 675 C~1QdL 2009 07 25.20146 16 33 48.55 +08 16 53.9 07LH38 675 C~1QdL 2009 07 25.29759 16 33 48.30 +08 16 49.9 07LH38 675 C~1QdL 2009 09 13.22339 16 33 40.65 +07 34 01.6 07LH38 568 C~1QdL 2009 09 15.21934 16 33 45.75 +07 32 06.6 07LH38 568 C~1QdL 2009 09 15.22504 16 33 45.76 +07 32 06.5 07LH38 568 C~1QdL 2009 09 16.22026 16 33 48.45 +07 31 09.4 07LH38 568 C~1QdL 2010 03 20.49879 16 49 34.27 +07 03 59.2 07LH38 675 C~1QdL 2011 05 02.26406 16 55 28.11 +06 28 32.8 07LH38 304 C~1QdL 2011 05 02.37555 16 55 27.65 +06 28 35.7 07LH38 304 C~1QdL 2011 05 03.25550 16 55 24.00 +06 28 57.1 07LH38 304 C~1QdL 2013 04 03.62926 17 12 01.16 +04 13 33.3 24.1R 07LH38 568 C~1QdL 2013 04 04.58296 17 11 59.80 +04 14 05.5 24.0R 07LH38 568 C~1QdL 2013 05 03.52252 17 10 38.28 +04 28 00.9 23.4R 07LH38 568 C~1QdL 2013 05 08.56725 17 10 17.39 +04 29 47.8 23.4R 07LH38 568 C~1QdL 2013 06 10.44552 17 07 35.45 +04 34 35.4 22.8R 07LH38 568 C~1QdL 2013 06 15.41863 17 07 09.58 +04 34 09.6 22.4R 07LH38 568 C~1QdL 2013 07 01.42350 17 05 49.66 +04 30 38.6 22.9R 07LH38 568 C~1QdL 2013 07 05.99342 17 05 28.52 +04 29 03.3 07LH38 950 C~1QdL 2013 07 06.07434 17 05 28.15 +04 29 01.4 07LH38 950 C~1QdL 2013 07 07.01346 17 05 23.94 +04 28 39.7 07LH38 950 C~1QdL 2019 05 06.412000 17 56 04.64 -01 39 17.0 23.3G 07LH38 705 C~39nr 2019 05 07.395610 17 56 01.29 -01 39 01.6 23.5G 07LH38 705 C~39nr 2019 05 07.444240 17 56 01.14 -01 39 01.0 22.9G 07LH38 705 C~39nr
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 -0.11 0.00 -0.21
2 0.0001 0.00 -0.19 0.00 -0.19
3 0.0002 0.00 -0.11 0.00 -0.07
4 0.8986 0.00 0.02 0.00 0.03
5 0.8987 0.00 -0.03 0.00 0.06
6 0.8987 0.00 -0.02 0.00 0.07
7 0.9643 0.00 -0.06 0.00 -0.37
8 0.9645 0.00 0.02 0.00 -0.46
9 0.9645 0.00 -0.23 0.00 -0.17
10 0.9725 0.00 0.17 0.00 -0.42
11 0.9879 0.00 -0.09 0.00 -0.00
12 0.9883 0.00 0.34 0.00 0.39
13 0.9906 0.00 0.31 0.00 0.64
14 0.9908 0.00 -0.10 0.00 0.46
15 1.1470 0.00 -0.62 0.00 -0.62
16 1.1471 0.00 -0.66 0.00 -0.49
17 1.1472 0.00 0.01 0.00 0.17
18 2.0287 0.00 -0.14 0.00 0.16
19 2.0288 0.00 -0.02 0.00 0.14
20 2.1160 0.00 0.48 0.00 0.20
21 2.1161 0.00 0.34 0.00 0.39
22 2.1188 0.00 0.35 0.00 0.30
23 2.1190 0.00 0.49 0.00 0.18
24 2.2557 0.00 -0.04 0.00 0.41
25 2.2612 0.00 0.09 0.00 -0.04
26 2.2612 0.00 0.02 0.00 0.19
27 2.2639 0.00 -0.04 0.00 0.20
28 2.7712 0.00 0.42 0.00 -0.32
29 3.8876 0.00 -0.06 0.00 -0.43
30 3.8879 0.00 0.02 0.00 -0.29
31 3.8903 0.00 -0.46 0.00 -0.41
32 5.8106 0.00 -0.04 0.00 -0.08
33 5.8132 0.00 0.05 0.00 0.07
34 5.8924 0.00 0.06 0.00 -0.02
35 5.9062 0.00 -0.09 0.00 0.02
36 5.9962 0.00 -0.12 0.00 0.20
37 6.0099 0.00 0.03 0.00 -0.05
38 6.0537 0.00 -0.14 0.00 -0.12
39 6.0662 0.00 0.00 0.00 0.29
40 6.0664 0.00 0.03 0.00 0.23
41 6.0690 0.00 0.08 0.00 0.14
42 11.8990 0.00 -0.08 0.00 -0.14
43 11.9017 0.00 -0.15 0.00 0.03
44 11.9018 0.00 0.17 0.00 -0.12
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.
07LH38 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 131.126 131.124 131.128 ecceobj 0.720 0.720 0.720 incobj 34.203 34.203 34.203 qmin 35.814 35.813 35.740 qmax 240.730 244.161 243.983 amean 133.966 135.094 134.721 amin 130.668 131.124 131.128 amax 138.960 140.947 140.635 emean 0.718 0.720 0.719 emin 0.707 0.710 0.707 emax 0.734 0.735 0.735 imean 33.553 33.568 33.677 imin 32.416 32.415 32.413 imax 34.364 34.408 34.566 excite_mean 0.906 0.908 0.908 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 167.3 168.5 172.2 kozaiamp 39.1 39.1 42.6