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: 17CC56 # Created Tue Sep 30 01:11:33 2025 # Orbit generated from Bernstein formalism # Fitting 47 observations of 47 # Arc: 3.14y # First observation: 2016/01/09 # Last observation: 2019/03/03 Preliminary a, adot, b, bdot, g, gdot: -0.000034 0.032237 -0.000052 -0.006984 0.028403 0.000000 # Chi-squared of fit: 31.69 DOF: 88 RMS: 0.15 # Min/Max residuals: -0.34 0.33 # Exact a, adot, b, bdot, g, gdot: 1.897108E-05 3.250788E-02 -3.927657E-06 -7.059135E-03 2.872052E-02 6.546787E-03 # Covariance matrix: 1.2137E-13 -4.4520E-14 3.6359E-15 1.0913E-16 1.0663E-13 -2.5932E-14 -4.4520E-14 2.8246E-13 2.3912E-14 -5.8970E-14 2.0998E-13 3.3744E-12 3.6359E-15 2.3912E-14 7.6190E-14 -5.2645E-14 2.9219E-14 3.4523E-13 1.0913E-16 -5.8970E-14 -5.2645E-14 6.6481E-14 -5.2201E-14 -8.6202E-13 1.0663E-13 2.0998E-13 2.9219E-14 -5.2201E-14 4.2003E-13 2.9440E-12 -2.5932E-14 3.3744E-12 3.4523E-13 -8.6202E-13 2.9440E-12 4.9351E-11 # lat0 lon0 xBary yBary zBary JD0 -9.808129 152.062993 0.680102 -0.120872 -0.700266 2457397.120729 # Heliocentric elements and errors Epoch: 2457390.5000 = 2016/01/03 Mean Anomaly: 23.27279 +/- 0.015 Argument of Peri: 174.08859 +/- 0.035 Long of Asc Node: 293.77630 +/- 0.001 Inclination: 15.65258 +/- 0.000 Eccentricity: 0.30788872 +/- 0.0002 Semi-Major Axis: 47.92049670 +/- 0.0068 Time of Perihelion: 2449557.5328 +/- 4.7 Perihelion: 33.16631613 +/- 0.0097 Aphelion: 62.67467727 +/- 0.0123 Period (y) 331.7341 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.62429916 +/- 0.0007 Ecliptic Y 17.00568371 +/- 0.0004 Ecliptic Z -5.93143165 +/- 0.0001 Ecliptic XDOT -0.00189463 +/- 0.0000 Ecliptic YDOT -0.00251027 +/- 0.0000 Ecliptic ZDOT -0.00076938 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.52777587 +/- 0.0006 Geocenter to KBO 34.81830642 +/- 0.0008 # Hcoef: 8.97
The following table shows the complete astrometric record for 17CC56. 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 (17CC56) followed by the observatory code and reference code for the source of the astrometry.
2016 01 09.61994 10 02 14.54 +01 34 00.5 24.6y 17CC56 T09 C~93T9 2016 01 09.63439 10 02 14.49 +01 34 00.5 24.1y 17CC56 T09 C~93T9 2016 01 09.64863 10 02 14.45 +01 34 00.7 23.7y 17CC56 T09 C~93T9 2016 01 09.66295 10 02 14.37 +01 34 00.7 24.3y 17CC56 T09 C~93T9 2016 02 03.58872 10 00 17.84 +01 39 07.8 24.3y 17CC56 T09 C~93T9 2016 02 03.59257 10 00 17.78 +01 39 08.2 24.8y 17CC56 T09 C~93T9 2016 02 03.60028 10 00 17.74 +01 39 08.3 24.3y 17CC56 T09 C~93T9 2016 02 03.61191 10 00 17.70 +01 39 08.2 24.1y 17CC56 T09 C~93T9 2016 02 03.61579 10 00 17.67 +01 39 08.2 23.9y 17CC56 T09 C~93T9 2016 02 03.65820 10 00 17.47 +01 39 09.5 23.7y 17CC56 T09 C~93T9 2016 02 12.52322 09 59 30.07 +01 42 16.7 23.7y 17CC56 T09 C~93T9 2016 02 12.52708 09 59 30.03 +01 42 16.5 23.7y 17CC56 T09 C~93T9 2016 02 12.53094 09 59 30.04 +01 42 16.7 23.3y 17CC56 T09 C~93T9 2016 02 12.53482 09 59 30.00 +01 42 17.1 23.9y 17CC56 T09 C~93T9 2016 02 12.53866 09 59 29.99 +01 42 16.9 23.7y 17CC56 T09 C~93T9 2016 02 12.54639 09 59 29.95 +01 42 17.1 23.8y 17CC56 T09 C~93T9 2016 02 12.55025 09 59 29.92 +01 42 17.2 23.6y 17CC56 T09 C~93T9 2017 01 28.51763 10 07 10.52 +00 35 28.8 24.2z 17CC56 T09 C~81Br 2017 01 28.52565 10 07 10.50 +00 35 29.0 24.3z 17CC56 T09 C~81Br 2017 01 28.53902 10 07 10.42 +00 35 29.0 24.2z 17CC56 T09 C~81Br 2017 01 28.54169 10 07 10.41 +00 35 29.1 24.1z 17CC56 T09 C~81Br 2017 01 28.55510 10 07 10.35 +00 35 29.5 24.2z 17CC56 T09 C~81Br 2017 01 28.55779 10 07 10.32 +00 35 29.5 24.2z 17CC56 T09 C~81Br 2017 01 28.57125 10 07 10.26 +00 35 29.5 24.2z 17CC56 T09 C~81Br 2017 02 02.38415 10 06 45.96 +00 36 51.5 24.4r 17CC56 T09 C~81Br 2017 02 02.50623 10 06 45.31 +00 36 53.8 24.6r 17CC56 T09 C~81Br 2017 02 02.52479 10 06 45.24 +00 36 54.2 24.8r 17CC56 T09 C~81Br 2017 02 02.53379 10 06 45.16 +00 36 54.5 24.8r 17CC56 T09 C~81Br 2017 02 02.58520 10 06 44.91 +00 36 55.2 24.0i 17CC56 T09 C~81Br 2017 03 04.32155 10 04 06.79 +00 48 59.5 23.9z 17CC56 T09 C~81Br 2017 03 04.34714 10 04 06.67 +00 49 00.4 24.1z 17CC56 T09 C~81Br 2017 03 04.45958 10 04 06.07 +00 49 03.6 24.3i 17CC56 T09 C~81Br 2017 03 04.48135 10 04 05.95 +00 49 04.2 24.6i 17CC56 T09 C~81Br 2017 03 04.50300 10 04 05.84 +00 49 04.8 24.5i 17CC56 T09 C~81Br 2017 03 22.30012 10 02 40.26 +00 57 49.5 25.8g 17CC56 T09 C~81Br 2017 03 22.31401 10 02 40.19 +00 57 50.2 25.4g 17CC56 T09 C~81Br 2017 03 22.31838 10 02 40.17 +00 57 50.2 26.0g 17CC56 T09 C~81Br 2017 03 22.33317 10 02 40.13 +00 57 50.8 25.7g 17CC56 T09 C~81Br 2017 03 22.34795 10 02 40.05 +00 57 51.3 25.3g 17CC56 T09 C~81Br 2017 03 22.35217 10 02 40.03 +00 57 51.2 25.6g 17CC56 T09 C~81Br 2018 01 17.45784 10 14 21.94 -00 27 59.5 24.5i 17CC56 T09 C~81Br 2018 01 17.48599 10 14 21.82 -00 27 59.3 24.5i 17CC56 T09 C~81Br 2018 01 17.54265 10 14 21.57 -00 27 58.5 24.0i 17CC56 T09 C~81Br 2018 01 17.56953 10 14 21.45 -00 27 58.5 24.3i 17CC56 T09 C~81Br 2018 01 17.59367 10 14 21.35 -00 27 58.3 24.1i 17CC56 T09 C~81Br 2019 01 04.486207 10 21 22.71 -01 28 46.4 17CC56 T09 C~81Br 2019 03 03.330379 10 16 53.06 -01 13 58.3 17CC56 T09 C~81Br
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 -0.22 0.00 0.01
2 0.0000 -0.70 -0.09 -0.26 -0.01
3 0.0001 -1.33 0.11 -0.29 0.20
4 0.0001 -2.46 -0.19 -0.71 0.01
5 0.0684 -1746.23 0.33 -327.27 -0.03
6 0.0684 -1747.21 -0.34 -327.21 0.07
7 0.0684 -1747.81 -0.31 -327.33 0.03
8 0.0684 -1748.34 0.11 -327.63 -0.16
9 0.0684 -1748.76 0.01 -327.79 -0.27
10 0.0686 -1752.02 0.18 -327.63 0.31
11 0.0928 -2483.26 -0.01 -402.02 0.07
12 0.0928 -2483.75 -0.17 -402.42 -0.30
13 0.0928 -2483.68 0.23 -402.18 -0.03
14 0.0929 -2484.39 -0.14 -402.01 0.17
15 0.0929 -2484.46 0.12 -402.25 -0.05
16 0.0929 -2485.09 0.14 -402.28 -0.01
17 0.0929 -2485.54 0.02 -402.34 -0.05
18 1.0538 5391.82 -0.06 -1726.22 -0.09
19 1.0538 5391.47 0.20 -1726.14 0.09
20 1.0539 5390.35 0.10 -1726.56 -0.17
21 1.0539 5390.17 0.13 -1726.52 -0.10
22 1.0539 5389.19 0.17 -1726.47 0.12
23 1.0539 5388.77 -0.05 -1726.62 -0.01
24 1.0539 5387.92 0.14 -1726.94 -0.17
25 1.0671 5017.66 0.09 -1778.43 -0.12
26 1.0675 5007.72 -0.09 -1779.71 -0.12
27 1.0675 5006.59 0.27 -1779.71 0.08
28 1.0675 5005.36 -0.24 -1779.85 0.03
29 1.0677 5001.60 0.12 -1780.51 -0.09
30 1.1491 2525.85 -0.11 -1936.71 -0.20
31 1.1492 2523.85 0.04 -1936.50 0.04
32 1.1495 2514.29 -0.04 -1936.67 -0.02
33 1.1495 2512.40 -0.11 -1936.74 -0.07
34 1.1496 2510.64 -0.05 -1936.76 -0.07
35 1.1983 1124.39 0.07 -1896.87 -0.10
36 1.1983 1123.16 -0.15 -1896.59 0.13
37 1.1984 1122.88 -0.11 -1896.69 0.00
38 1.1984 1122.11 0.19 -1896.34 0.29
39 1.1984 1120.81 -0.03 -1896.29 0.27
40 1.1984 1120.56 0.03 -1896.49 0.06
41 2.0228 12805.45 -0.00 -3016.16 0.02
42 2.0229 12803.69 0.03 -3016.61 0.00
43 2.0231 12799.88 -0.17 -3017.18 0.31
44 2.0231 12798.19 -0.15 -3017.82 0.08
45 2.0232 12796.71 -0.09 -3018.16 0.11
46 2.9866 20043.93 0.12 -4218.70 -0.10
47 3.1450 15914.61 -0.03 -4808.00 -0.18
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.
17CC56 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.700 47.723 47.677 ecceobj 0.306 0.307 0.306 incobj 15.658 15.658 15.658 qmin 32.595 32.672 32.550 qmax 64.227 64.084 64.376 amean 47.797 47.796 47.797 amin 47.034 47.059 47.042 amax 48.687 48.700 48.688 emean 0.302 0.300 0.303 emin 0.281 0.279 0.282 emax 0.321 0.319 0.322 imean 17.441 17.582 17.366 imin 17.046 17.123 16.992 imax 17.917 18.246 17.930 excite_mean 0.426 0.426 0.425 fracstop 1.000 1.000 1.000 cjmean 2.921 2.920 2.921 libcent 0 179.8 180.1 179.9 libamp 0 163.5 161.6 165.1 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 201.9 209.4 197.1 kozaiamp 180.0 179.9 180.0