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: 07LF38 # Created Wed Dec 25 02:08:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 56 observations of 56 # Arc: 11.90y # First observation: 2007/06/12 # Last observation: 2019/05/07 # Chi-squared of fit: 61.57 DOF: 106 RMS: 0.19 # Min/Max residuals: -0.50 0.56 # Exact a, adot, b, bdot, g, gdot: 1.685816E-05 2.092288E-02 4.488567E-06 3.679753E-03 2.098676E-02 8.291943E-03 # Covariance matrix: 8.8323E-14 -3.9269E-14 8.2574E-15 -5.1297E-15 3.7326E-15 -1.4029E-13 -3.9269E-14 2.9015E-14 -7.1624E-15 4.3856E-15 -3.5343E-15 1.1957E-13 8.2574E-15 -7.1624E-15 6.2232E-14 -1.1123E-14 2.1724E-14 -2.6828E-14 -5.1297E-15 4.3856E-15 -1.1123E-14 4.2814E-15 -2.2380E-15 2.0011E-14 3.7326E-15 -3.5343E-15 2.1724E-14 -2.2380E-15 6.2073E-14 3.3992E-15 -1.4029E-13 1.1957E-13 -2.6828E-14 2.0011E-14 3.3992E-15 5.6647E-13 # lat0 lon0 xBary yBary zBary JD0 35.239507 -118.407860 -0.334698 0.550295 -0.778860 2454263.827824 # Heliocentric elements and errors Epoch: 2454264.5000 = 2007/06/13 Mean Anomaly: 17.00049 +/- 0.004 Argument of Peri: 13.39815 +/- 0.003 Long of Asc Node: 169.26656 +/- 0.000 Inclination: 35.81802 +/- 0.000 Eccentricity: 0.55995772 +/- 0.0001 Semi-Major Axis: 88.79343544 +/- 0.0131 Time of Perihelion: 2439832.4288 +/- 4.5 Perihelion: 39.07286563 +/- 0.0080 Aphelion: 138.51400525 +/- 0.0211 Period (y) 836.7187 +/- 0.18 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -18.67465487 +/- 0.0002 Ecliptic Y -35.23394071 +/- 0.0004 Ecliptic Z 27.49353360 +/- 0.0003 Ecliptic XDOT 0.00211842 +/- 0.0000 Ecliptic YDOT -0.00183461 +/- 0.0000 Ecliptic ZDOT 0.00101614 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 48.43592264 +/- 0.0004 Geocenter to KBO 47.64884369 +/- 0.0006 # Hcoef: 5.85
The following table shows the complete astrometric record for 07LF38. 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 (07LF38) followed by the observatory code and reference code for the source of the astrometry.
2007 06 12.32707 16 25 31.72 +14 06 01.3 22.4r 07LF38 568 C~1Q3Z 2007 06 12.36776 16 25 31.55 +14 06 01.3 22.5r 07LF38 568 C~1Q3Z 2007 06 12.40822 16 25 31.39 +14 06 01.4 22.7r 07LF38 568 C~1Q3Z 2007 09 11.19157 16 23 05.11 +13 24 41.3 22.2r 07LF38 695 C~1Q3Z 2007 09 16.16593 16 23 14.91 +13 21 08.9 22.5R 07LF38 675 C~1Q3Z 2007 09 17.15432 16 23 17.07 +13 20 26.6 07LF38 675 C~1Q3Z 2007 09 17.15916 16 23 17.08 +13 20 26.5 07LF38 675 C~1Q3Z 2007 09 17.16401 16 23 17.12 +13 20 26.2 07LF38 675 C~1Q3Z 2007 10 07.21523 16 24 17.17 +13 06 42.0 07LF38 568 C~1Q3Z 2007 10 07.23022 16 24 17.22 +13 06 41.3 07LF38 568 C~1Q3Z 2007 10 07.24437 16 24 17.26 +13 06 40.8 07LF38 568 C~1Q3Z 2008 05 03.40448 16 33 07.95 +13 54 57.0 07LF38 695 C~1Q3Z 2008 05 04.38346 16 33 04.38 +13 55 23.4 07LF38 695 C~1Q3Z 2008 05 04.42348 16 33 04.26 +13 55 24.5 07LF38 695 C~1Q3Z 2008 05 05.51327 16 33 00.27 +13 55 53.3 22.6r 07LF38 568 C~1Q3Z 2008 05 05.54253 16 33 00.17 +13 55 54.1 22.7r 07LF38 568 C~1Q3Z 2008 05 05.57204 16 33 00.05 +13 55 54.8 22.7r 07LF38 568 C~1Q3Z 2008 05 07.38875 16 32 53.32 +13 56 41.1 22.7r 07LF38 568 C~1Q3Z 2008 05 07.41794 16 32 53.19 +13 56 41.7 22.7r 07LF38 568 C~1Q3Z 2008 05 07.44732 16 32 53.08 +13 56 42.5 22.7r 07LF38 568 C~1Q3Z 2008 06 08.10757 16 30 45.11 +14 04 09.1 07LF38 807 C~1Q3Z 2008 06 08.18644 16 30 44.77 +14 04 09.2 07LF38 807 C~1Q3Z 2008 08 04.27250 16 27 52.81 +13 47 54.4 07LF38 568 C~1Q3Z 2008 08 04.30868 16 27 52.77 +13 47 52.7 07LF38 568 C~1Q3Z 2008 08 04.34365 16 27 52.72 +13 47 51.9 07LF38 568 C~1Q3Z 2009 06 20.30531 16 34 51.65 +14 01 46.5 07LF38 695 C~1Q3Z 2009 06 20.37862 16 34 51.31 +14 01 46.7 07LF38 695 C~1Q3Z 2009 07 24.17704 16 33 05.23 +13 52 00.1 07LF38 675 C~1Q3Z 2009 07 24.21386 16 33 05.16 +13 51 58.9 07LF38 675 C~1Q3Z 2009 07 25.21054 16 33 02.98 +13 51 31.0 07LF38 675 C~1Q3Z 2009 07 25.30695 16 33 02.77 +13 51 28.3 07LF38 675 C~1Q3Z 2009 08 19.19596 16 32 31.77 +13 37 19.1 23.0r 07LF38 675 C~1Q3Z 2009 08 19.22226 16 32 31.74 +13 37 18.0 07LF38 675 C~1Q3Z 2009 09 13.22068 16 32 49.89 +13 20 10.8 07LF38 568 C~1Q3Z 2009 09 15.22222 16 32 53.52 +13 18 46.2 07LF38 568 C~1Q3Z 2009 09 16.22316 16 32 55.46 +13 18 04.1 07LF38 568 C~1Q3Z 2010 03 19.44923 16 44 25.60 +13 22 24.6 07LF38 675 C~1Q3Z 2010 03 19.45303 16 44 25.61 +13 22 24.8 07LF38 675 C~1Q3Z 2010 03 19.45681 16 44 25.61 +13 22 24.7 07LF38 675 C~1Q3Z 2010 03 20.47202 16 44 25.03 +13 23 07.8 07LF38 675 C~1Q3Z 2010 03 20.50341 16 44 25.01 +13 23 09.2 07LF38 675 C~1Q3Z 2011 05 02.26253 16 47 36.24 +13 46 39.5 07LF38 304 C~1Q3Z 2011 05 02.37400 16 47 35.86 +13 46 42.7 07LF38 304 C~1Q3Z 2011 05 03.26254 16 47 32.91 +13 47 07.5 07LF38 304 C~1Q3Z 2013 04 03.62232 16 57 51.87 +13 24 09.0 22.6R 07LF38 568 C~1Q3Z 2013 04 04.59066 16 57 50.43 +13 24 46.7 22.6R 07LF38 568 C~1Q3Z 2013 04 30.48049 16 56 48.72 +13 39 40.0 22.6R 07LF38 568 C~1Q3Z 2013 05 03.51602 16 56 39.01 +13 41 05.6 22.5R 07LF38 568 C~1Q3Z 2013 06 10.43094 16 54 14.85 +13 50 54.9 22.6R 07LF38 568 C~1Q3Z 2013 06 15.42537 16 53 54.96 +13 50 59.2 07LF38 568 C~1Q3Z 2013 07 05.98696 16 52 38.64 +13 48 12.4 07LF38 950 C~1Q3Z 2013 07 06.06785 16 52 38.35 +13 48 11.2 07LF38 950 C~1Q3Z 2013 07 07.00706 16 52 35.20 +13 47 56.6 07LF38 950 C~1Q3Z 2019 05 06.371590 17 22 11.38 +13 17 08.8 23.2G 07LF38 705 C~39nr 2019 05 07.317530 17 22 08.55 +13 17 32.9 23.2G 07LF38 705 C~39nr 2019 05 07.388950 17 22 08.33 +13 17 34.7 23.4G 07LF38 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 -0.30 0.00 -0.30
2 0.0001 0.00 -0.34 0.00 -0.30
3 0.0002 0.00 -0.25 0.00 -0.19
4 0.2488 0.00 -0.11 0.00 0.11
5 0.2624 0.00 0.22 0.00 0.06
6 0.2651 0.00 -0.05 0.00 -0.15
7 0.2651 0.00 -0.06 0.00 -0.05
8 0.2651 0.00 0.38 0.00 -0.14
9 0.3200 0.00 0.07 0.00 0.29
10 0.3201 0.00 -0.00 0.00 0.18
11 0.3201 0.00 -0.18 0.00 0.23
12 0.8928 0.00 -0.18 0.00 -0.09
13 0.8954 0.00 -0.50 0.00 -0.11
14 0.8955 0.00 -0.07 0.00 -0.08
15 0.8985 0.00 -0.01 0.00 -0.03
16 0.8986 0.00 0.14 0.00 0.01
17 0.8987 0.00 0.01 0.00 -0.06
18 0.9037 0.00 0.28 0.00 0.06
19 0.9037 0.00 -0.00 0.00 -0.07
20 0.9038 0.00 0.03 0.00 -0.01
21 0.9905 0.00 0.05 0.00 0.08
22 0.9907 0.00 -0.14 0.00 -0.03
23 1.1470 0.00 -0.13 0.00 0.24
24 1.1471 0.00 0.03 0.00 -0.24
25 1.1472 0.00 0.02 0.00 0.15
26 2.0232 0.00 0.56 0.00 -0.21
27 2.0234 0.00 -0.24 0.00 0.42
28 2.1159 0.00 -0.16 0.00 0.24
29 2.1160 0.00 0.05 0.00 0.07
30 2.1188 0.00 -0.01 0.00 0.23
31 2.1190 0.00 0.02 0.00 0.28
32 2.1872 0.00 0.15 0.00 0.10
33 2.1873 0.00 -0.17 0.00 0.02
34 2.2557 0.00 0.23 0.00 0.11
35 2.2612 0.00 0.15 0.00 0.02
36 2.2639 0.00 0.18 0.00 0.14
37 2.7683 0.00 0.17 0.00 -0.19
38 2.7683 0.00 0.36 0.00 -0.16
39 2.7683 0.00 0.39 0.00 -0.42
40 2.7711 0.00 0.16 0.00 -0.25
41 2.7712 0.00 0.17 0.00 -0.18
42 3.8876 0.00 -0.18 0.00 -0.03
43 3.8879 0.00 -0.20 0.00 0.02
44 3.8903 0.00 0.13 0.00 -0.13
45 5.8105 0.00 -0.18 0.00 -0.04
46 5.8132 0.00 -0.10 0.00 -0.11
47 5.8841 0.00 -0.16 0.00 -0.06
48 5.8924 0.00 -0.13 0.00 0.07
49 5.9962 0.00 -0.18 0.00 -0.05
50 6.0099 0.00 -0.19 0.00 -0.03
51 6.0661 0.00 0.09 0.00 0.23
52 6.0664 0.00 -0.08 0.00 0.27
53 6.0689 0.00 -0.02 0.00 0.23
54 11.8988 0.00 -0.03 0.00 -0.03
55 11.9014 0.00 0.09 0.00 -0.10
56 11.9016 0.00 0.09 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.
07LF38 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 86.501 86.502 86.500 ecceobj 0.550 0.550 0.550 incobj 35.857 35.857 35.857 qmin 35.971 36.244 36.139 qmax 143.311 143.493 143.550 amean 87.959 88.071 88.081 amin 86.399 86.336 86.499 amax 90.216 90.346 90.330 emean 0.568 0.565 0.564 emin 0.548 0.546 0.542 emax 0.590 0.589 0.590 imean 34.299 34.587 34.588 imin 33.183 33.437 33.331 imax 35.379 35.520 35.778 excite_mean 0.800 0.801 0.801 fracstop 1.000 1.000 1.000 cjmean 2.665 2.666 2.666 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 94.5 90.9 94.6 kozaiamp 79.7 79.0 83.0