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: 17DV159 # Created Mon Apr 28 01:11:05 2025 # Orbit generated from Bernstein formalism # Fitting 47 observations of 55 # Arc: 2.99y # First observation: 2015/01/21 # Last observation: 2018/01/17 Preliminary a, adot, b, bdot, g, gdot: 0.000008 0.008782 0.000022 0.005504 0.015718 0.000000 # Chi-squared of fit: 37.70 DOF: 88 RMS: 0.16 # Min/Max residuals: -0.47 0.36 # Exact a, adot, b, bdot, g, gdot: 9.237674E-06 8.817198E-03 6.044330E-06 5.532807E-03 1.579324E-02 1.619688E-03 # Covariance matrix: 5.5890E-13 -4.0013E-13 5.9521E-14 -1.1664E-13 -2.3340E-13 -7.3463E-12 -4.0013E-13 5.7900E-13 -1.5538E-13 3.0621E-13 7.0553E-13 1.9315E-11 5.9521E-14 -1.5538E-13 5.3826E-13 -3.2949E-13 -2.2936E-13 -6.4752E-12 -1.1664E-13 3.0621E-13 -3.2949E-13 3.1528E-13 4.5427E-13 1.2748E-11 -2.3340E-13 7.0553E-13 -2.2936E-13 4.5427E-13 1.1703E-12 2.8694E-11 -7.3463E-12 1.9315E-11 -6.4752E-12 1.2748E-11 2.8694E-11 8.0389E-10 # lat0 lon0 xBary yBary zBary JD0 -10.851027 151.335452 0.497863 -0.159196 -0.831341 2457044.084683 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 144.12207 +/- 0.344 Argument of Peri: 180.62267 +/- 0.335 Long of Asc Node: 167.52522 +/- 0.001 Inclination: 33.43610 +/- 0.002 Eccentricity: 0.30758156 +/- 0.0007 Semi-Major Axis: 50.42098900 +/- 0.0198 Time of Perihelion: 2404687.2736 +/- 121.2 Perihelion: 34.91242236 +/- 0.0366 Aphelion: 65.92955565 +/- 0.0427 Period (y) 358.0348 +/- 0.21 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -55.07192591 +/- 0.0037 Ecliptic Y 30.67260926 +/- 0.0020 Ecliptic Z -11.91968148 +/- 0.0008 Ecliptic XDOT -0.00113745 +/- 0.0000 Ecliptic YDOT -0.00112767 +/- 0.0000 Ecliptic ZDOT 0.00088923 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 64.15453834 +/- 0.0034 Geocenter to KBO 63.31823316 +/- 0.0043 # Hcoef: 7.13
The following table shows the complete astrometric record for 17DV159. 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 (17DV159) followed by the observatory code and reference code for the source of the astrometry.
2015 01 21.583905 09 58 05.91 +00 50 26.6 17DV159 T09 C~81Bu 2015 01 21.661564 09 58 05.70 +00 50 27.6 17DV159 T09 C~81Bu 2016 03 04.429779 09 58 15.71 +01 10 54.3 17DV159 T09 C~81Bu 2016 03 04.459022 09 58 15.61 +01 10 55.0 17DV159 T09 C~81Bu 2016 12 25.54616 10 03 46.27 +01 00 58.9 25.8r 17DV159 T09 C~7ujJ 2016 12 25.59402 10 03 46.20 +01 00 59.2 26.0i 17DV159 T09 C~7ujJ 2016 12 25.61625 10 03 46.26 +01 00 59.7 25.5i 17DV159 T09 C~7ujJ 2017 01 21.44099 10 02 45.38 +01 04 50.8 25.6z 17DV159 T09 C~7ujJ 2017 01 21.45826 10 02 45.33 +01 04 51.0 26.0z 17DV159 T09 C~7ujJ 2017 01 21.48580 10 02 45.26 +01 04 51.5 25.7z 17DV159 T09 C~7ujJ 2017 01 21.53790 10 02 45.11 +01 04 52.0 24.9z 17DV159 T09 C~7ujJ 2017 01 21.56003 10 02 45.04 +01 04 52.3 25.3z 17DV159 T09 C~7ujJ 2017 01 21.57598 10 02 45.01 +01 04 52.7 25.6z 17DV159 T09 C~7ujJ 2017 01 21.59481 10 02 44.95 +01 04 52.8 24.8z 17DV159 T09 C~7ujJ 2017 01 23.36273 10 02 40.05 +01 05 17.0 25.6r 17DV159 T09 C~7ujJ 2017 01 23.39642 10 02 39.96 +01 05 17.2 25.0r 17DV159 T09 C~7ujJ 2017 01 23.41024 10 02 39.90 +01 05 17.7 25.4r 17DV159 T09 C~7ujJ 2017 01 23.52068 10 02 39.57 +01 05 19.2 24.7i 17DV159 T09 C~7ujJ 2017 01 23.56169 10 02 39.46 +01 05 19.9 25.0i 17DV159 T09 C~7ujJ 2017 01 23.59193 10 02 39.38 +01 05 19.9 24.3i 17DV159 T09 C~7ujJ 2017 01 30.41709 10 02 19.50 +01 07 03.5 25.2i 17DV159 T09 C~7ujJ 2017 01 30.43912 10 02 19.43 +01 07 03.6 25.9i 17DV159 T09 C~7ujJ 2017 01 30.46126 10 02 19.34 +01 07 03.8 25.6i 17DV159 T09 C~7ujJ 2017 01 30.50547 10 02 19.23 +01 07 04.6 25.8z 17DV159 T09 C~7ujJ 2017 02 21.35310 10 01 11.20 +01 13 55.9 25.2z 17DV159 T09 C~7ujJ 2017 02 21.40442 10 01 11.04 +01 13 56.9 24.7z 17DV159 T09 C~7ujJ 2017 02 21.42640 10 01 10.99 +01 13 57.3 25.4z 17DV159 T09 C~7ujJ 2017 02 23.32237 10 01 05.00 +01 14 37.4 25.9g 17DV159 T09 C~7ujJ 2017 02 23.33599 10 01 04.96 +01 14 37.8 26.1g 17DV159 T09 C~7ujJ 2017 02 23.46966 10 01 04.56 +01 14 40.8 25.3r 17DV159 T09 C~7ujJ 2017 02 23.48331 10 01 04.51 +01 14 40.8 25.5r 17DV159 T09 C~7ujJ 2017 02 23.49694 10 01 04.50 +01 14 40.8 25.0r 17DV159 T09 C~7ujJ 2017 02 23.51437 10 01 04.42 +01 14 41.5 25.7r 17DV159 T09 C~7ujJ 2017 03 04.31803 10 00 37.20 +01 17 54.9 25.2z 17DV159 T09 C~7ujJ 2017 03 04.34360 10 00 37.12 +01 17 55.2 24.5z 17DV159 T09 C~7ujJ 2017 03 04.45958 10 00 36.76 +01 17 57.9 25.1i 17DV159 T09 C~7ujJ 2017 03 04.47782 10 00 36.70 +01 17 58.3 25.0i 17DV159 T09 C~7ujJ 2017 03 22.29763 09 59 46.43 +01 24 44.1 25.3g 17DV159 T09 C~7ujJ 2017 03 22.39100 09 59 46.20 +01 24 46.4 24.7z 17DV159 T09 C~7ujJ 2017 03 22.41670 09 59 46.12 +01 24 47.1 25.5z 17DV159 T09 C~7ujJ 2017 03 22.44235 09 59 46.09 +01 24 47.6 24.9z 17DV159 T09 C~7ujJ 2017 03 25.26003 09 59 38.99 +01 25 51.4 25.1r 17DV159 T09 C~7ujJ 2017 03 25.27375 09 59 38.98 +01 25 52.1 25.6r 17DV159 T09 C~7ujJ 2017 03 25.28747 09 59 38.93 +01 25 52.4 25.9r 17DV159 T09 C~7ujJ 2017 03 30.31998 09 59 27.07 +01 27 46.4 21.9y 17DV159 T09 C~83F2 2017 03 30.32381 09 59 27.07 +01 27 46.2 22.1y 17DV159 T09 C~83F2 2017 03 30.32764 09 59 27.07 +01 27 46.2 22.3y 17DV159 T09 C~83F2 2017 03 30.33147 09 59 27.07 +01 27 46.2 22.2y 17DV159 T09 C~83F2 2017 03 30.33530 09 59 27.08 +01 27 46.5 22.2y 17DV159 T09 C~83F2 2017 04 23.24251 09 58 46.20 +01 35 59.1 25.9r 17DV159 T09 C~7ujJ 2017 04 23.25417 09 58 46.19 +01 35 59.5 26.2r 17DV159 T09 C~7ujJ 2017 04 23.26183 09 58 46.15 +01 36 00.0 26.2r 17DV159 T09 C~7ujJ 2018 01 17.46122 10 05 16.12 +01 11 04.0 24.6i 17DV159 T09 C~81Bu 2018 01 17.51830 10 05 15.95 +01 11 04.5 26.0i 17DV159 T09 C~81Bu 2018 01 17.54536 10 05 15.87 +01 11 05.0 25.3i 17DV159 T09 C~81Bu
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 -0.08 0.00 -0.10
2 0.0002 -3.30 0.08 -0.16 -0.07
3 1.1166 -290.83 0.17 1201.79 0.00
4 1.1167 -292.47 0.02 1201.93 -0.01
5 1.9273 4563.40 -0.04 2375.79 0.13
6 1.9275 4562.32 0.09 2375.70 0.31
7 1.9275 4562.98 ( 1.32) 2376.48 ( 1.22)
8 2.0010 3626.30 -0.18 2273.85 0.04
9 2.0010 3625.52 -0.19 2273.77 -0.00
10 2.0011 3624.37 -0.13 2273.87 0.16
11 2.0012 3622.08 -0.10 2273.56 -0.04
12 2.0013 3620.99 -0.21 2273.47 -0.07
13 2.0013 3620.43 -0.06 2273.69 0.18
14 2.0014 3619.55 -0.11 2273.47 0.00
15 2.0062 3542.21 0.35 2270.46 0.16
16 2.0063 3540.88 ( 0.54) 2270.18 ( -0.06)
17 2.0064 3539.86 0.14 2270.33 0.12
18 2.0067 3534.70 -0.02 2270.01 0.01
19 2.0068 3532.91 0.05 2270.08 0.17
20 2.0069 3531.78 0.30 2269.67 -0.19
21 2.0256 3216.13 -0.09 2262.54 0.22
22 2.0256 3215.11 -0.04 2262.27 -0.03
23 2.0257 3213.77 -0.31 2261.99 -0.30
24 2.0258 3211.95 0.01 2262.16 -0.09
25 2.0856 2112.06 -0.19 2291.08 0.00
26 2.0858 2109.46 -0.10 2291.18 -0.05
27 2.0858 2108.62 0.21 2291.29 -0.00
28 2.0910 2010.42 -0.19 2297.49 -0.26
29 2.0910 2009.72 -0.18 2297.65 -0.14
30 2.0914 2003.05 0.14 2298.37 0.14
31 2.0914 2002.35 0.16 2298.10 -0.17
32 2.0915 2002.21 ( 0.73) 2298.05 ( -0.27)
33 2.0915 2000.84 0.27 2298.29 -0.09
34 2.1156 1550.74 0.02 2336.92 0.21
35 2.1157 1549.51 0.10 2336.78 -0.06
36 2.1160 1543.51 0.03 2337.43 0.03
37 2.1161 1542.52 -0.02 2337.49 -0.00
38 2.1649 694.35 -0.11 2454.47 -0.22
39 2.1651 690.32 0.04 2455.42 0.02
40 2.1652 688.95 -0.18 2455.65 0.06
41 2.1653 688.35 0.36 2455.97 0.17
42 2.1730 566.30 -0.04 2478.57 -0.29
43 2.1730 565.91 0.17 2479.18 0.20
44 2.1730 565.11 -0.05 2479.20 0.11
45 2.1868 358.64 ( 0.07) 2523.92 ( 0.95)
46 2.1868 358.71 ( 0.29) 2523.74 ( 0.73)
47 2.1868 358.71 ( 0.45) 2523.74 ( 0.69)
48 2.1869 358.71 ( 0.60) 2523.74 ( 0.66)
49 2.1869 358.74 ( 0.79) 2524.07 ( 0.96)
50 2.2523 -387.72 0.11 2771.69 -0.17
51 2.2523 -388.00 0.09 2772.01 0.02
52 2.2524 -388.73 -0.47 2772.27 0.20
53 2.9894 5615.36 0.24 3414.39 0.04
54 2.9896 5612.80 0.06 3413.97 -0.23
55 2.9896 5611.50 -0.11 3414.02 -0.11
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.
17DV159 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 50.257 50.317 50.201 ecceobj 0.314 0.316 0.312 incobj 33.625 33.622 33.627 qmin 32.353 32.821 32.733 qmax 69.328 68.779 68.431 amean 50.419 50.413 50.167 amin 49.792 49.861 49.674 amax 51.151 51.095 50.814 emean 0.331 0.322 0.322 emin 0.302 0.306 0.299 emax 0.357 0.347 0.347 imean 32.337 32.607 32.480 imin 31.649 31.960 31.884 imax 33.308 33.128 33.215 excite_mean 0.629 0.628 0.626 fracstop 1.000 1.000 1.000 cjmean 2.661 2.661 2.662 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 186.1 201.5 195.6 kozaiamp 180.0 180.0 179.9