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: 160256 # Created Sun Dec 22 02:06:58 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 48 observations of 48 # Arc: 18.20y # First observation: 2000/08/25 # Last observation: 2018/11/08 # Chi-squared of fit: 132.57 DOF: 90 RMS: 0.29 # Min/Max residuals: -0.80 1.99 # Exact a, adot, b, bdot, g, gdot: 1.429144E-05 2.039066E-02 -1.135060E-06 -8.434350E-04 2.251712E-02 -4.099666E-04 # 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 -4.383637 -15.305615 0.222568 -0.075294 -0.980065 2451781.712863 # Heliocentric elements and errors Epoch: 2451782.5000 = 2000/08/26 Mean Anomaly: 209.92851 +/- 0.000 Argument of Peri: 34.13502 +/- 0.000 Long of Asc Node: 103.64461 +/- 0.000 Inclination: 4.91101 +/- 0.000 Eccentricity: 0.05953345 +/- 0.0000 Semi-Major Axis: 43.13472089 +/- 0.0000 Time of Perihelion: 2494917.9772 +/- 0.0 Perihelion: 40.56676207 +/- 0.0000 Aphelion: 45.70267972 +/- 0.0000 Period (y) 283.3014 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.60528767 +/- 0.0000 Ecliptic Y -12.15788465 +/- 0.0000 Ecliptic Z -3.39455922 +/- 0.0000 Ecliptic XDOT 0.00059167 +/- 0.0000 Ecliptic YDOT 0.00241187 +/- 0.0000 Ecliptic ZDOT -0.00009829 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.39559379 +/- 0.0000 Geocenter to KBO 44.41069684 +/- 0.0000 # Hcoef: 6.52
The following table shows the complete astrometric record for 160256. 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 (160256) followed by the observatory code and reference code for the source of the astrometry.
2000 08 25.21212 23 10 29.08 -10 04 05.5 22.9R 160256 807 Ci4046 2000 08 25.27585 23 10 28.81 -10 04 07.6 160256 807 Ci4046 2000 08 25.27585 23 10 28.81 -10 04 07.5 160256 807 C~3g3D 2001 09 19.303912 23 13 12.4 -09 50 24.0 22.1V 160256 645 YC~1PzB 2001 09 19.304741 23 13 12.3 -09 50 24.1 21.8V 160256 645 YC~1PzB 2001 09 19.307229 23 13 12.2 -09 50 24.1 23.6V 160256 645 YC~1PzB 2002 08 10.42509 23 20 19.35 -09 07 33.4 22.1R 160256 807 Cg3357 2002 08 11.36606 23 20 16.07 -09 07 57.5 160256 807 Cg3357 2002 08 11.42412 23 20 15.87 -09 07 59.1 160256 807 Cg3357 2002 09 09.37564 23 18 21.29 -09 21 04.0 21.9R 160256 662 Cg3357 2002 09 09.44907 23 18 20.98 -09 21 05.3 160256 662 Cg3357 2003 08 23.26764 23 23 57.89 -08 47 58.2 22.0R 160256 807 Ci3361 2003 08 23.34923 23 23 57.55 -08 48 00.5 160256 807 Ci3361 2003 08 24.29352 23 23 53.86 -08 48 26.0 160256 807 Ci3361 2004 11 03.0443 23 23 51.79 -08 49 35.2 22.1R 160256 809 Cl8391 2007 05 22.19614 23 42 47.15 -06 48 07.8 23.9R 160256 250 S~06He 2007 05 22.20309 23 42 47.17 -06 48 07.7 160256 250 S~06He 2007 05 22.21003 23 42 47.18 -06 48 07.7 160256 250 S~06He 2007 07 11.31772 23 43 27.11 -06 49 34.7 160256 304 Cv1978 2007 07 11.41957 23 43 27.00 -06 49 36.2 160256 304 Cv1978 2007 07 12.30139 23 43 25.92 -06 49 48.7 160256 304 Cv1978 2007 07 12.42706 23 43 25.75 -06 49 50.5 160256 304 Cv1978 2013 09 08.19449 00 07 02.653 -04 32 28.95 23.6g 160256 W84 C~50zR 2013 09 11.28756 00 06 50.121 -04 33 56.04 23.3g 160256 W84 C~50zR 2013 09 11.28894 00 06 50.123 -04 33 55.90 23.0r 160256 W84 C~50zR 2013 10 04.22626 00 05 14.442 -04 44 21.37 23.4r 160256 W84 C~50zR 2013 10 04.22766 00 05 14.436 -04 44 21.37 22.7i 160256 W84 C~50zR 2013 10 13.13618 00 04 38.337 -04 47 59.19 22.9z 160256 W84 C~50zR 2013 11 08.15653 00 03 09.288 -04 55 56.41 23.0i 160256 W84 C~50zR 2013 12 02.10754 00 02 23.528 -04 58 28.99 23.2r 160256 W84 C~50zR 2016 09 09.16459 00 20 11.557 -03 11 12.96 23.0i 160256 W84 C~50zR 2016 09 10.33783 00 20 06.893 -03 11 45.83 23.4r 160256 W84 C~50zR 2016 10 01.19162 00 18 40.280 -03 21 23.69 22.8r 160256 W84 C~50zR 2016 10 01.19299 00 18 40.282 -03 21 23.75 22.7i 160256 W84 C~50zR 2016 10 01.193831 00 18 40.27 -03 21 23.8 23.8g 160256 W84 C~35QS 2016 10 01.19436 00 18 40.281 -03 21 23.89 24.0g 160256 W84 C~50zR 2016 12 05.10133 00 15 22.569 -03 38 11.17 22.8z 160256 W84 C~50zR 2017 09 18.234120 00 24 00.72 -02 47 49.4 23.0r 160256 W84 C~35QS 2017 09 18.23465 00 24 00.722 -02 47 49.39 23.1r 160256 W84 C~50zR 2017 09 18.235509 00 24 00.71 -02 47 49.4 22.8i 160256 W84 C~35QS 2017 09 18.23604 00 24 00.709 -02 47 49.37 22.8i 160256 W84 C~50zR 2017 09 18.23742 00 24 00.718 -02 47 49.27 24.0g 160256 W84 C~50zR 2017 10 13.222812 00 22 16.17 -02 58 57.5 23.1r 160256 W84 C~35QS 2017 10 13.22334 00 22 16.170 -02 58 57.42 23.0r 160256 W84 C~50zR 2017 10 27.16855 00 21 22.007 -03 04 08.58 22.9z 160256 W84 C~50zR 2017 10 29.12797 00 21 14.962 -03 04 46.61 21.8z 160256 W84 C~50zR 2018 10 18.18232 00 26 22.305 -02 33 14.68 22.9i 160256 W84 C~50zR 2018 11 08.17396 00 25 06.436 -02 40 07.30 23.6r 160256 W84 C~50zR
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 -0.04 0.00 0.11
2 0.0002 0.00 -0.13 0.00 -0.16
3 0.0002 0.00 -0.13 0.00 -0.26
4 1.0680 0.00 1.99 0.00 0.33
5 1.0680 0.00 0.54 0.00 0.26
6 1.0680 0.00 -0.80 0.00 0.32
7 1.9581 0.00 -0.07 0.00 0.02
8 1.9607 0.00 -0.10 0.00 0.16
9 1.9609 0.00 0.00 0.00 0.05
10 2.0401 0.00 -0.27 0.00 -0.52
11 2.0403 0.00 -0.21 0.00 0.16
12 2.9926 0.00 -0.03 0.00 -0.22
13 2.9928 0.00 -0.28 0.00 -0.30
14 2.9954 0.00 -0.32 0.00 0.00
15 4.1912 0.00 -0.66 0.00 0.17
16 6.7378 0.00 -0.30 0.00 -0.23
17 6.7378 0.00 -0.29 0.00 -0.21
18 6.7378 0.00 -0.42 0.00 -0.28
19 6.8750 0.00 0.14 0.00 0.08
20 6.8753 0.00 0.40 0.00 0.03
21 6.8777 0.00 0.13 0.00 0.21
22 6.8781 0.00 0.08 0.00 0.24
23 13.0376 0.00 0.43 0.00 0.08
24 13.0461 0.00 0.03 0.00 -0.18
25 13.0461 0.00 0.15 0.00 0.00
26 13.1089 0.00 0.08 0.00 -0.13
27 13.1089 0.00 0.08 0.00 -0.09
28 13.1333 0.00 0.09 0.00 -0.12
29 13.2045 0.00 -0.10 0.00 -0.18
30 13.2701 0.00 0.15 0.00 -0.17
31 16.0409 0.00 0.13 0.00 0.14
32 16.0441 0.00 0.21 0.00 0.04
33 16.1012 0.00 -0.02 0.00 0.17
34 16.1012 0.00 0.09 0.00 0.15
35 16.1013 0.00 -0.03 0.00 0.12
36 16.1013 0.00 0.17 0.00 0.05
37 16.2790 0.00 0.01 0.00 0.07
38 17.0651 0.00 -0.09 0.00 -0.11
39 17.0651 0.00 -0.03 0.00 -0.09
40 17.0651 0.00 -0.16 0.00 -0.07
41 17.0651 0.00 -0.14 0.00 -0.03
42 17.0651 0.00 0.08 0.00 0.11
43 17.1335 0.00 -0.01 0.00 -0.03
44 17.1335 0.00 0.02 0.00 0.06
45 17.1717 0.00 -0.05 0.00 -0.07
46 17.1770 0.00 -0.09 0.00 0.10
47 18.1464 0.00 -0.14 0.00 0.02
48 18.2039 0.00 -0.27 0.00 0.04
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.
160256 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.213 43.213 43.213 ecceobj 0.058 0.058 0.058 incobj 4.909 4.909 4.909 qmin 39.099 39.105 39.096 qmax 47.088 47.070 47.112 amean 43.025 43.025 43.025 amin 42.688 42.689 42.686 amax 43.382 43.383 43.381 emean 0.067 0.067 0.067 emin 0.047 0.047 0.047 emax 0.086 0.086 0.087 imean 3.298 3.298 3.298 imin 2.316 2.316 2.316 imax 4.358 4.358 4.359 excite_mean 0.088 0.088 0.088 fracstop 1.000 1.000 1.000 cjmean 3.081 3.081 3.081 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 179.1 179.1 179.2 kozaiamp 179.9 180.0 180.0