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: 160147 # Created Fri Nov 22 02:06:57 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 39 observations of 40 # Arc: 6.89y # First observation: 2001/05/22 # Last observation: 2008/04/13 # Chi-squared of fit: 145.06 DOF: 72 RMS: 0.34 # Min/Max residuals: -0.92 1.28 # Exact a, adot, b, bdot, g, gdot: 1.633564E-05 2.566958E-02 -3.000374E-06 -4.853583E-04 2.519019E-02 -1.658276E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -2.483615 -147.231829 -0.495743 -0.038684 -0.889287 2452052.488523 # Heliocentric elements and errors Epoch: 2452052.5000 = 2001/05/23 Mean Anomaly: 326.05645 +/- 0.000 Argument of Peri: 286.59394 +/- 0.000 Long of Asc Node: 326.70496 +/- 0.000 Inclination: 2.64375 +/- 0.000 Eccentricity: 0.08389919 +/- 0.0000 Semi-Major Axis: 43.50635014 +/- 0.0000 Time of Perihelion: 2461935.3503 +/- 0.0 Perihelion: 39.85620243 +/- 0.0000 Aphelion: 47.15649784 +/- 0.0000 Period (y) 286.9704 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.82574721 +/- 0.0000 Ecliptic Y -22.35981807 +/- 0.0000 Ecliptic Z -1.72039595 +/- 0.0000 Ecliptic XDOT 0.00165496 +/- 0.0000 Ecliptic YDOT -0.00224500 +/- 0.0000 Ecliptic ZDOT -0.00004470 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.58454150 +/- 0.0000 Geocenter to KBO 39.69807216 +/- 0.0000 # Hcoef: 6.41
The following table shows the complete astrometric record for 160147. 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 (160147) followed by the observatory code and reference code for the source of the astrometry.
2001 05 22.98778 13 58 44.34 -14 45 52.7 22.7R 160147 807 Cd1817 2001 05 23.08494 13 58 43.92 -14 45 50.8 160147 807 Cd1817 2001 06 10.01326 13 57 41.01 -14 39 34.0 22.5R 160147 304 Cd1817 2001 06 10.08764 13 57 40.86 -14 39 31.9 160147 304 Cd1817 2002 04 06.23254 14 08 05.08 -15 36 47.7 21.8R 160147 807 Cf4617 2002 04 06.36873 14 08 04.44 -15 36 44.6 160147 807 Cf4617 2002 04 07.24921 14 08 00.42 -15 36 24.9 160147 807 Cf4617 2002 04 08.26472 14 07 55.72 -15 36 02.2 21.2R 160147 807 Cf4617 2002 04 09.21801 14 07 51.29 -15 35 40.6 160147 807 Cf4617 2002 04 09.28159 14 07 50.99 -15 35 39.1 160147 807 Cf4617 2002 04 09.39501 14 07 50.44 -15 35 36.6 160147 807 Cf4617 2002 04 10.49319 14 07 45.32 -15 35 11.4 21.8R 160147 568 Cf4617 2002 04 10.57182 14 07 44.97 -15 35 09.4 160147 568 Cf4617 2002 05 11.96967 14 05 14.59 -15 22 14.6 160147 950 Cf4617 2002 05 12.04612 14 05 14.20 -15 22 12.6 160147 950 Cf4617 2002 05 12.09174 14 05 14.01 -15 22 11.4 160147 950 Cf4617 2002 05 12.99888 14 05 09.85 -15 21 48.9 160147 950 Cf4617 2002 05 13.07988 14 05 09.48 -15 21 47.0 160147 950 Cf4617 2003 04 21.16925 14 12 41.12 -16 02 16.6 20.2R 160147 304 Ch8069 2003 04 21.20666 14 12 40.94 -16 02 16.0 160147 304 Ch8069 2004 05 11.37076 14 16 48.06 -16 24 35.0 22.6R 160147 568 Ck9562 2004 05 11.47413 14 16 47.57 -16 24 32.5 160147 568 Ck9562 2005 04 10.39062 14 25 10.90 -17 07 05.1 22.6R 160147 695 Cn3087 2005 04 11.35628 14 25 06.44 -17 06 44.8 160147 695 Cn3087 2005 04 11.43492 14 25 06.04 -17 06 43.0 160147 695 Cn3087 2005 06 07.06677 14 20 46.06 -16 45 03.8 22.7R 160147 304 Cn6472 2005 06 07.07650 14 20 46.02 -16 45 03.6 160147 304 Cn6472 2006 04 26.22013 14 29 50.51 -17 31 03.1 21.4R 160147 807 Cr3558 2006 04 26.30668 14 29 50.07 -17 31 01.0 160147 807 Cr3558 2006 04 27.22572 14 29 45.52 -17 30 39.8 160147 807 Cr3558 2006 06 21.03436 14 25 53.27 -17 10 49.8 22.6R 160147 304 Cr4812 2006 06 21.11943 14 25 53.01 -17 10 48.6 160147 304 Cr4812 2007 04 21.16501 14 36 14.05 -18 02 11.4 160147 807 Cv1520 2007 04 21.29607 14 36 13.38 -18 02 08.3 160147 807 Cv1520 2007 05 13.28340 14 34 24.52 -17 53 49.1 22.3R 160147 688 Cv0105 2007 05 13.36174 14 34 24.24 -17 53 45.8 160147 688 Cv0105 2008 04 13.32323 14 42 47.82 -18 33 02.7 23.3R 160147 250 S~06He 2008 04 13.37948 14 42 47.56 -18 33 01.6 160147 250 S~06He 2008 04 13.38573 14 42 47.53 -18 33 01.5 160147 250 S~06He 2008 04 13.39198 14 42 47.50 -18 33 01.4 160147 250 S~06He
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 0.54
2 0.0003 0.00 -0.14 0.00 0.19
3 0.0494 0.00 1.18 0.00 0.70
4 0.0496 0.00 ( 2.28) 0.00 ( 1.44)
5 0.8713 0.00 -0.11 0.00 -0.36
6 0.8717 0.00 -0.20 0.00 -0.27
7 0.8741 0.00 0.04 0.00 -0.07
8 0.8769 0.00 -0.02 0.00 -0.10
9 0.8795 0.00 -0.01 0.00 -0.05
10 0.8797 0.00 0.02 0.00 0.01
11 0.8800 0.00 -0.18 0.00 -0.09
12 0.8830 0.00 0.05 0.00 0.20
13 0.8832 0.00 0.44 0.00 0.38
14 0.9691 0.00 0.10 0.00 -0.09
15 0.9694 0.00 -0.39 0.00 0.01
16 0.9695 0.00 -0.05 0.00 0.07
17 0.9720 0.00 -0.36 0.00 0.06
18 0.9722 0.00 -0.27 0.00 -0.06
19 1.9115 0.00 0.20 0.00 -0.04
20 1.9116 0.00 0.28 0.00 -0.34
21 2.9689 0.00 -0.39 0.00 -0.18
22 2.9692 0.00 -0.29 0.00 -0.21
23 3.8834 0.00 -0.34 0.00 -0.32
24 3.8860 0.00 0.17 0.00 -0.29
25 3.8862 0.00 -0.23 0.00 -0.16
26 4.0413 0.00 -0.33 0.00 -0.09
27 4.0413 0.00 -0.40 0.00 -0.08
28 4.9260 0.00 0.14 0.00 -0.16
29 4.9263 0.00 0.07 0.00 -0.06
30 4.9288 0.00 0.01 0.00 0.00
31 5.0788 0.00 0.10 0.00 0.12
32 5.0791 0.00 -0.19 0.00 -0.07
33 5.9115 0.00 0.39 0.00 -0.56
34 5.9119 0.00 0.10 0.00 -0.28
35 5.9721 0.00 -0.34 0.00 -0.92
36 5.9723 0.00 1.28 0.00 0.55
37 6.8921 0.00 -0.10 0.00 0.45
38 6.8922 0.00 -0.06 0.00 0.46
39 6.8923 0.00 -0.08 0.00 0.44
40 6.8923 0.00 -0.09 0.00 0.42
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.
160147 quality flag:2 Type: CLASSICAL 7:4EEE CLASSICAL axisobj 43.420 43.420 43.420 ecceobj 0.084 0.084 0.084 incobj 2.647 2.647 2.647 qmin 39.248 39.347 39.251 qmax 48.550 48.455 48.504 amean 43.726 43.725 43.726 amin 43.337 43.340 43.344 amax 44.163 44.156 44.148 emean 0.083 0.084 0.083 emin 0.065 0.069 0.066 emax 0.099 0.099 0.099 imean 3.820 3.824 3.823 imin 3.000 2.997 3.012 imax 4.616 4.616 4.617 excite_mean 0.107 0.107 0.107 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 3.084 libcent 0 -180.0 184.9 -180.0 libamp 0 -180.0 172.2 -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 180.6 174.3 180.8 kozaiamp 180.0 180.0 180.0