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: 17DS165 # Created Fri Nov 22 02:10:51 2024 # Orbit generated from Bernstein formalism # Fitting 89 observations of 89 # Arc: 2.37y # First observation: 2016/12/25 # Last observation: 2019/05/09 Preliminary a, adot, b, bdot, g, gdot: 0.000026 0.026074 -0.000006 -0.005108 0.026112 0.000000 # Chi-squared of fit: 106.04 DOF: 172 RMS: 0.19 # Min/Max residuals: -0.72 0.50 # Exact a, adot, b, bdot, g, gdot: 1.617944E-05 2.586064E-02 -3.285106E-06 -5.110817E-03 2.579788E-02 -5.806700E-04 # Covariance matrix: 7.4601E-14 2.9143E-13 2.5624E-14 -1.4572E-13 1.8847E-13 1.3429E-11 2.9143E-13 7.5742E-12 5.5495E-13 -3.8032E-12 3.0419E-12 3.5630E-10 2.5624E-14 5.5495E-13 6.2504E-14 -3.0632E-13 2.2960E-13 2.6433E-11 -1.4572E-13 -3.8032E-12 -3.0632E-13 2.0642E-12 -1.5290E-12 -1.8237E-10 1.8847E-13 3.0419E-12 2.2960E-13 -1.5290E-12 1.3299E-12 1.4292E-10 1.3429E-11 3.5630E-10 2.6433E-11 -1.8237E-10 1.4292E-10 1.7095E-08 # lat0 lon0 xBary yBary zBary JD0 -8.976507 152.141283 0.840855 -0.080514 -0.510938 2457748.050079 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 316.32744 +/- 2.769 Argument of Peri: 267.18371 +/- 3.333 Long of Asc Node: 293.47822 +/- 0.004 Inclination: 14.37941 +/- 0.001 Eccentricity: 0.06243735 +/- 0.0037 Semi-Major Axis: 41.05735081 +/- 0.0083 Time of Perihelion: 2469397.6105 +/- 739.2 Perihelion: 38.49383878 +/- 0.1508 Aphelion: 43.62086285 +/- 0.1509 Period (y) 263.0841 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.91867134 +/- 0.0015 Ecliptic Y 18.87241609 +/- 0.0008 Ecliptic Z -6.04831363 +/- 0.0003 Ecliptic XDOT -0.00115129 +/- 0.0000 Ecliptic YDOT -0.00250113 +/- 0.0000 Ecliptic ZDOT -0.00052619 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.28392104 +/- 0.0014 Geocenter to KBO 38.76287167 +/- 0.0017 # Hcoef: 9.36
The following table shows the complete astrometric record for 17DS165. 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 (17DS165) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.54929 10 03 42.15 +02 19 05.2 25.3r 17DS165 T09 C~83F2 2016 12 25.58674 10 03 42.09 +02 19 05.4 25.4i 17DS165 T09 C~83F2 2016 12 25.59777 10 03 42.06 +02 19 05.2 25.0i 17DS165 T09 C~83F2 2016 12 25.60159 10 03 42.04 +02 19 04.7 25.5i 17DS165 T09 C~83F2 2016 12 25.62003 10 03 41.96 +02 19 05.1 25.4i 17DS165 T09 C~83F2 2017 01 02.50845 10 03 19.46 +02 19 08.1 25.3i 17DS165 T09 C~83F2 2017 01 02.55486 10 03 19.32 +02 19 08.1 25.5i 17DS165 T09 C~83F2 2017 01 02.62872 10 03 19.07 +02 19 08.1 26.0g 17DS165 T09 C~83F2 2017 01 21.44850 10 02 07.38 +02 21 42.8 25.1z 17DS165 T09 C~83F2 2017 01 21.45233 10 02 07.34 +02 21 42.6 25.3z 17DS165 T09 C~83F2 2017 01 21.46362 10 02 07.30 +02 21 43.0 25.0z 17DS165 T09 C~83F2 2017 01 21.49713 10 02 07.16 +02 21 43.3 24.8z 17DS165 T09 C~83F2 2017 01 21.50455 10 02 07.13 +02 21 43.5 24.9z 17DS165 T09 C~83F2 2017 01 21.51947 10 02 07.06 +02 21 43.6 24.8z 17DS165 T09 C~83F2 2017 01 21.52330 10 02 07.06 +02 21 43.6 24.8z 17DS165 T09 C~83F2 2017 01 21.53071 10 02 07.00 +02 21 43.8 24.2z 17DS165 T09 C~83F3 2017 01 21.55293 10 02 06.90 +02 21 43.8 24.4z 17DS165 T09 C~83F3 2017 01 23.35198 10 01 58.95 +02 22 09.2 24.7r 17DS165 T09 C~83F3 2017 01 23.35766 10 01 58.95 +02 22 09.2 25.0r 17DS165 T09 C~83F3 2017 01 23.37416 10 01 58.90 +02 22 09.0 24.8r 17DS165 T09 C~83F3 2017 01 23.38565 10 01 58.84 +02 22 09.2 24.9r 17DS165 T09 C~83F3 2017 01 23.39135 10 01 58.83 +02 22 09.9 24.5r 17DS165 T09 C~83F3 2017 01 23.41887 10 01 58.70 +02 22 10.0 24.9r 17DS165 T09 C~83F3 2017 01 23.43584 10 01 58.64 +02 22 10.0 25.0r 17DS165 T09 C~83F3 2017 01 23.44310 10 01 58.58 +02 22 10.2 25.5r 17DS165 T09 C~83F3 2017 01 23.49071 10 01 58.33 +02 22 10.7 24.7i 17DS165 T09 C~83F3 2017 01 23.50215 10 01 58.32 +02 22 11.2 25.4i 17DS165 T09 C~83F3 2017 01 23.50600 10 01 58.29 +02 22 11.0 24.6i 17DS165 T09 C~83F3 2017 01 23.51343 10 01 58.26 +02 22 11.2 24.9i 17DS165 T09 C~83F3 2017 01 23.53459 10 01 58.17 +02 22 11.6 24.8i 17DS165 T09 C~83F3 2017 01 23.59562 10 01 57.89 +02 22 12.2 24.8i 17DS165 T09 C~83F3 2017 01 30.42076 10 01 26.46 +02 24 01.7 24.5i 17DS165 T09 C~83F3 2017 01 30.44278 10 01 26.36 +02 24 01.8 25.1i 17DS165 T09 C~83F3 2017 01 30.44661 10 01 26.34 +02 24 02.3 24.2i 17DS165 T09 C~83F3 2017 01 30.45397 10 01 26.31 +02 24 02.0 24.5i 17DS165 T09 C~83F3 2017 01 30.46494 10 01 26.26 +02 24 02.3 24.7i 17DS165 T09 C~83F3 2017 01 30.46877 10 01 26.23 +02 24 02.2 24.1i 17DS165 T09 C~83F3 2017 01 30.52425 10 01 25.97 +02 24 03.7 24.4z 17DS165 T09 C~83F3 2017 01 30.53514 10 01 25.92 +02 24 03.3 24.3z 17DS165 T09 C~83F3 2017 01 30.53900 10 01 25.90 +02 24 03.3 24.6z 17DS165 T09 C~83F3 2017 01 30.54618 10 01 25.89 +02 24 03.3 24.4z 17DS165 T09 C~83F3 2017 02 02.45873 10 01 11.98 +02 24 56.8 25.4r 17DS165 T09 C~83F3 2017 02 02.46478 10 01 11.93 +02 24 56.9 25.0r 17DS165 T09 C~83F3 2017 02 02.47353 10 01 11.87 +02 24 56.9 25.9r 17DS165 T09 C~83F3 2017 02 21.31699 09 59 38.32 +02 31 54.4 25.7z 17DS165 T09 C~83F3 2017 02 21.33121 09 59 38.26 +02 31 54.8 25.8z 17DS165 T09 C~83F3 2017 02 21.33887 09 59 38.22 +02 31 55.1 25.8z 17DS165 T09 C~83F3 2017 02 21.39002 09 59 37.94 +02 31 56.6 25.0z 17DS165 T09 C~83F3 2017 02 21.40807 09 59 37.89 +02 31 56.9 25.3z 17DS165 T09 C~83F3 2017 02 23.45915 09 59 27.63 +02 32 48.1 25.7r 17DS165 T09 C~83F3 2017 02 23.47280 09 59 27.56 +02 32 48.8 26.3r 17DS165 T09 C~83F3 2017 02 23.47596 09 59 27.55 +02 32 48.5 25.3r 17DS165 T09 C~83F3 2017 02 23.48645 09 59 27.49 +02 32 49.1 26.2r 17DS165 T09 C~83F3 2017 02 25.27038 09 59 18.66 +02 33 34.6 24.7i 17DS165 T09 C~83F3 2017 02 25.31757 09 59 18.38 +02 33 36.1 25.1i 17DS165 T09 C~83F3 2017 02 25.36493 09 59 18.18 +02 33 37.0 25.7i 17DS165 T09 C~83F3 2017 02 25.41253 09 59 17.93 +02 33 38.0 25.0i 17DS165 T09 C~83F3 2017 02 25.42020 09 59 17.90 +02 33 38.5 24.7i 17DS165 T09 C~83F3 2017 02 25.42391 09 59 17.87 +02 33 38.5 25.2i 17DS165 T09 C~83F3 2017 02 25.43849 09 59 17.81 +02 33 39.0 25.6i 17DS165 T09 C~83F3 2017 02 25.44233 09 59 17.79 +02 33 39.0 24.7i 17DS165 T09 C~83F3 2017 02 25.44604 09 59 17.76 +02 33 38.8 24.8i 17DS165 T09 C~83F3 2017 03 04.28551 09 58 44.41 +02 36 38.9 24.4z 17DS165 T09 C~83F3 2017 03 04.30733 09 58 44.34 +02 36 39.2 24.9z 17DS165 T09 C~83F3 2017 03 04.31098 09 58 44.31 +02 36 39.4 24.4z 17DS165 T09 C~83F3 2017 03 04.32902 09 58 44.23 +02 36 40.1 24.9z 17DS165 T09 C~83F3 2017 03 04.33650 09 58 44.20 +02 36 40.2 24.4z 17DS165 T09 C~83F3 2017 03 04.35463 09 58 44.11 +02 36 40.9 24.9z 17DS165 T09 C~83F3 2017 03 04.44130 09 58 43.68 +02 36 42.7 25.2i 17DS165 T09 C~83F3 2017 03 04.44514 09 58 43.67 +02 36 43.1 25.4i 17DS165 T09 C~83F3 2017 03 04.44888 09 58 43.64 +02 36 43.1 25.5i 17DS165 T09 C~83F3 2017 03 04.46710 09 58 43.54 +02 36 43.7 25.5i 17DS165 T09 C~83F3 2017 03 04.47080 09 58 43.53 +02 36 43.9 25.5i 17DS165 T09 C~83F3 2017 03 04.48502 09 58 43.45 +02 36 44.4 25.1i 17DS165 T09 C~83F3 2017 03 04.48885 09 58 43.44 +02 36 44.2 25.4i 17DS165 T09 C~83F3 2017 03 04.49253 09 58 43.43 +02 36 44.4 25.0i 17DS165 T09 C~83F3 2017 03 04.50666 09 58 43.35 +02 36 44.8 25.0i 17DS165 T09 C~83F3 2017 03 06.49634 09 58 33.91 +02 37 38.1 25.5r 17DS165 T09 C~83F3 2017 03 06.49950 09 58 33.89 +02 37 38.3 25.5r 17DS165 T09 C~83F3 2017 03 06.51016 09 58 33.82 +02 37 38.6 26.0r 17DS165 T09 C~83F3 2017 03 06.51332 09 58 33.82 +02 37 38.6 25.5r 17DS165 T09 C~83F3 2017 03 06.52393 09 58 33.75 +02 37 38.9 26.3r 17DS165 T09 C~83F3 2017 03 06.52710 09 58 33.77 +02 37 38.9 25.8r 17DS165 T09 C~83F3 2017 03 06.53779 09 58 33.72 +02 37 39.3 26.1r 17DS165 T09 C~83F3 2018 01 17.46122 10 07 36.58 +01 32 37.7 25.5i 17DS165 T09 C~83F3 2018 01 17.51830 10 07 36.33 +01 32 38.2 25.2i 17DS165 T09 C~83F3 2018 01 17.54536 10 07 36.20 +01 32 38.6 25.0i 17DS165 T09 C~83F3 2019 05 09.356870 10 05 53.93 +01 26 21.9 17DS165 T09 C~83F3 2019 05 09.378507 10 05 53.92 +01 26 22.4 17DS165 T09 C~83F3
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 -0.07 0.00 0.03
2 0.0001 -0.91 0.36 -0.13 0.49
3 0.0001 -1.26 0.41 -0.47 0.32
4 0.0001 -1.37 0.44 -1.05 -0.20
5 0.0002 -2.63 -0.16 -1.10 0.04
6 0.0218 -319.34 -0.30 -116.97 -0.05
7 0.0219 -321.30 -0.10 -117.71 -0.11
8 0.0221 -324.81 -0.15 -119.02 -0.35
9 0.0736 -1385.02 -0.01 -352.21 0.12
10 0.0737 -1385.51 -0.25 -352.61 -0.24
11 0.0737 -1386.21 -0.19 -352.45 0.05
12 0.0738 -1388.28 -0.01 -352.90 -0.04
13 0.0738 -1388.78 -0.01 -352.88 0.07
14 0.0738 -1389.79 -0.02 -353.15 -0.04
15 0.0739 -1389.79 0.24 -353.15 0.00
16 0.0739 -1390.70 -0.18 -353.28 -0.05
17 0.0739 -1392.11 -0.09 -353.81 -0.33
18 0.0789 -1512.58 -0.72 -371.93 0.07
19 0.0789 -1512.58 -0.33 -371.93 0.13
20 0.0789 -1513.22 0.17 -372.38 -0.15
21 0.0789 -1514.13 0.04 -372.51 -0.16
22 0.0790 -1514.51 0.04 -371.91 0.50
23 0.0790 -1516.37 0.07 -372.50 0.20
24 0.0791 -1517.21 0.39 -372.82 0.06
25 0.0791 -1518.13 -0.02 -372.95 0.01
26 0.0792 -1521.81 -0.43 -373.80 -0.34
27 0.0793 -1522.13 0.04 -373.38 0.20
28 0.0793 -1522.48 -0.04 -373.73 -0.10
29 0.0793 -1522.97 -0.02 -373.70 0.00
30 0.0794 -1524.37 0.03 -373.80 0.13
31 0.0795 -1528.51 0.10 -374.71 -0.14
32 0.0982 -2008.01 -0.20 -437.84 0.20
33 0.0983 -2009.45 -0.02 -438.28 -0.04
34 0.0983 -2009.91 -0.19 -437.91 0.36
35 0.0983 -2010.22 0.04 -438.35 -0.01
36 0.0983 -2011.03 0.04 -438.34 0.10
37 0.0983 -2011.42 -0.06 -438.59 -0.12
38 0.0985 -2015.59 -0.14 -438.55 0.42
39 0.0985 -2016.15 0.11 -439.19 -0.12
40 0.0985 -2016.43 0.11 -439.30 -0.20
41 0.0986 -2016.57 0.50 -439.35 -0.18
42 0.1065 -2230.56 0.45 -462.56 0.25
43 0.1065 -2231.30 0.17 -462.73 0.13
44 0.1066 -2232.14 -0.01 -463.04 -0.12
45 0.1582 -3691.70 -0.07 -564.85 -0.12
46 0.1582 -3692.68 0.08 -564.79 -0.01
47 0.1582 -3693.35 0.03 -564.72 0.09
48 0.1584 -3697.80 -0.33 -564.79 0.19
49 0.1584 -3698.61 0.31 -564.78 0.27
50 0.1640 -3860.60 0.09 -570.85 -0.21
51 0.1641 -3861.83 -0.04 -570.56 0.11
52 0.1641 -3861.87 0.17 -570.89 -0.21
53 0.1641 -3862.92 -0.04 -570.65 0.06
54 0.1690 -4002.84 0.09 -574.52 0.04
55 0.1691 -4007.30 -0.62 -574.59 0.08
56 0.1692 -4010.42 0.03 -574.80 -0.02
57 0.1694 -4014.28 -0.03 -575.18 -0.29
58 0.1694 -4014.88 -0.02 -574.87 0.04
59 0.1694 -4015.30 -0.14 -575.03 -0.11
60 0.1694 -4016.32 0.00 -574.88 0.08
61 0.1695 -4016.60 0.03 -574.98 -0.02
62 0.1695 -4016.95 -0.03 -575.33 -0.35
63 0.1882 -4548.34 -0.34 -582.19 -0.10
64 0.1882 -4549.43 0.26 -582.28 -0.18
65 0.1883 -4549.92 0.06 -582.25 -0.15
66 0.1883 -4551.29 0.09 -582.02 0.10
67 0.1883 -4551.74 0.22 -582.08 0.04
68 0.1884 -4553.25 0.12 -581.90 0.23
69 0.1886 -4559.92 0.19 -582.48 -0.29
70 0.1886 -4560.20 0.21 -582.15 0.03
71 0.1886 -4560.62 0.08 -582.31 -0.12
72 0.1887 -4562.24 -0.12 -582.28 -0.08
73 0.1887 -4562.45 -0.04 -582.14 0.06
74 0.1887 -4563.75 -0.23 -582.09 0.11
75 0.1887 -4563.82 -0.01 -582.33 -0.12
76 0.1888 -4564.03 0.07 -582.20 0.01
77 0.1888 -4565.29 -0.10 -582.25 -0.03
78 0.1942 -4716.53 0.12 -582.00 -0.05
79 0.1943 -4716.88 0.01 -581.92 0.04
80 0.1943 -4717.97 -0.26 -582.01 -0.05
81 0.1943 -4717.97 -0.02 -582.01 -0.05
82 0.1943 -4719.06 -0.29 -582.10 -0.14
83 0.1943 -4718.77 0.23 -581.99 -0.03
84 0.1944 -4719.62 0.20 -581.88 0.08
85 1.0620 4271.74 0.18 -1371.09 0.23
86 1.0622 4268.06 0.03 -1371.95 0.07
87 1.0623 4266.09 -0.26 -1372.26 0.09
88 2.3677 2963.28 0.06 -2265.29 -0.14
89 2.3678 2962.96 -0.03 -2264.88 0.02
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.
17DS165 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.867 40.908 40.841 ecceobj 0.055 0.048 0.064 incobj 14.371 14.374 14.368 qmin 38.079 38.336 37.625 qmax 43.954 43.729 44.297 amean 40.904 40.939 40.878 amin 40.593 40.630 40.563 amax 41.223 41.257 41.212 emean 0.052 0.045 0.060 emin 0.040 0.033 0.046 emax 0.066 0.060 0.076 imean 15.970 15.960 15.983 imin 15.093 15.115 15.066 imax 16.803 16.779 16.840 excite_mean 0.280 0.279 0.282 fracstop 1.000 1.000 1.000 cjmean 2.974 2.975 2.972 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 179.6 179.9 182.2 kozaiamp 180.0 179.9 180.0