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 Sun Dec 22 02:10:56 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 2.09y # First observation: 2017/01/28 # Last observation: 2019/03/03 Preliminary a, adot, b, bdot, g, gdot: -0.000012 0.031956 -0.000007 -0.006770 0.028556 0.000000 # Chi-squared of fit: 13.92 DOF: 54 RMS: 0.12 # Min/Max residuals: -0.29 0.29 # Exact a, adot, b, bdot, g, gdot: 1.842024E-05 3.233813E-02 -3.367119E-06 -6.848572E-03 2.868163E-02 6.470845E-03 # Covariance matrix: 1.1177E-13 -1.7573E-13 -1.6531E-15 1.9808E-14 9.9945E-14 -1.8580E-12 -1.7573E-13 1.8035E-12 3.3927E-14 -3.5097E-13 1.4685E-13 3.0641E-11 -1.6531E-15 3.3927E-14 6.7926E-14 -6.0825E-14 5.7444E-15 6.4218E-13 1.9808E-14 -3.5097E-13 -6.0825E-14 2.3434E-13 -5.0963E-14 -6.6111E-12 9.9945E-14 1.4685E-13 5.7444E-15 -5.0963E-14 3.5961E-13 4.0471E-12 -1.8580E-12 3.0641E-11 6.4218E-13 -6.6111E-12 4.0471E-12 5.7567E-10 # lat0 lon0 xBary yBary zBary JD0 -10.284073 153.584782 0.422050 -0.158943 -0.876968 2457782.018431 # Heliocentric elements and errors Epoch: 2457780.5000 = 2017/01/27 Mean Anomaly: 24.52394 +/- 0.044 Argument of Peri: 174.17617 +/- 0.103 Long of Asc Node: 293.81853 +/- 0.002 Inclination: 15.66656 +/- 0.001 Eccentricity: 0.30504593 +/- 0.0007 Semi-Major Axis: 47.76918641 +/- 0.0268 Time of Perihelion: 2449565.4922 +/- 13.1 Perihelion: 33.19739071 +/- 0.0385 Aphelion: 62.34098211 +/- 0.0486 Period (y) 330.1642 +/- 0.28 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -31.33771622 +/- 0.0006 Ecliptic Y 16.03132355 +/- 0.0003 Ecliptic Z -6.22463211 +/- 0.0001 Ecliptic XDOT -0.00181018 +/- 0.0000 Ecliptic YDOT -0.00255284 +/- 0.0000 Ecliptic ZDOT -0.00075357 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.74635419 +/- 0.0006 Geocenter to KBO 34.86552303 +/- 0.0007 # Hcoef: 9.12
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.
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 -0.12 0.00 -0.08
2 0.0000 -0.35 0.14 0.08 0.09
3 0.0001 -1.47 0.04 -0.35 -0.17
4 0.0001 -1.65 0.07 -0.31 -0.10
5 0.0001 -2.63 0.11 -0.25 0.12
6 0.0001 -3.05 -0.11 -0.41 -0.00
7 0.0001 -3.89 0.08 -0.74 -0.16
8 0.0133 -373.67 0.03 -53.96 -0.12
9 0.0137 -383.60 -0.14 -55.29 -0.11
10 0.0137 -384.73 0.22 -55.29 0.09
11 0.0137 -385.95 -0.29 -55.44 0.04
12 0.0139 -389.71 0.06 -56.12 -0.09
13 0.0953 -2863.95 -0.12 -224.06 -0.20
14 0.0954 -2865.95 0.03 -223.86 0.04
15 0.0957 -2875.50 -0.05 -224.08 -0.02
16 0.0957 -2877.40 -0.11 -224.16 -0.07
17 0.0958 -2879.15 -0.05 -224.18 -0.07
18 0.1445 -4265.82 0.10 -190.90 -0.10
19 0.1445 -4267.06 -0.12 -190.62 0.12
20 0.1446 -4267.34 -0.08 -190.73 -0.00
21 0.1446 -4268.11 0.22 -190.38 0.29
22 0.1446 -4269.41 -0.00 -190.34 0.27
23 0.1447 -4269.66 0.06 -190.54 0.05
24 0.9690 7406.71 0.09 -1253.02 -0.01
25 0.9691 7404.96 0.12 -1253.47 -0.02
26 0.9693 7401.17 -0.08 -1254.06 0.28
27 0.9693 7399.48 -0.06 -1254.70 0.06
28 0.9694 7398.01 -0.00 -1255.05 0.09
29 1.9328 14624.09 -0.07 -2417.25 -0.09
30 2.0912 10513.73 0.05 -3026.19 -0.13
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 47.662 47.758 47.568 ecceobj 0.305 0.308 0.303 incobj 15.658 15.658 15.657 qmin 32.605 32.616 32.511 qmax 64.282 64.074 64.502 amean 47.797 47.796 47.799 amin 47.033 47.069 46.951 amax 48.719 48.631 48.770 emean 0.302 0.295 0.306 emin 0.281 0.261 0.286 emax 0.321 0.320 0.324 imean 17.392 17.738 17.391 imin 17.007 17.160 16.726 imax 17.939 18.842 17.904 excite_mean 0.425 0.424 0.428 fracstop 1.000 1.000 1.000 cjmean 2.921 2.922 2.919 libcent 0 180.3 180.7 181.4 libamp 0 165.0 159.3 175.2 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 194.0 216.1 183.5 kozaiamp 180.0 179.9 180.0