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: 17AC64 # Created Thu Oct 31 01:10:30 2024 # Orbit generated from Bernstein formalism # Fitting 78 observations of 80 # Arc: 2.01y # First observation: 2016/01/15 # Last observation: 2018/01/17 Preliminary a, adot, b, bdot, g, gdot: 0.000091 0.020926 -0.000113 -0.010445 0.022144 0.000000 # Chi-squared of fit: 89.67 DOF: 150 RMS: 0.19 # Min/Max residuals: -0.83 0.48 # Exact a, adot, b, bdot, g, gdot: 1.493486E-05 2.116864E-02 -9.294548E-06 -1.059926E-02 2.233372E-02 6.668496E-03 # Covariance matrix: 3.9080E-13 -4.2233E-13 -6.1497E-14 1.1738E-13 -6.0395E-14 -4.8216E-12 -4.2233E-13 7.3683E-13 1.7124E-13 -3.1722E-13 3.7862E-13 1.2968E-11 -6.1497E-14 1.7124E-13 3.0546E-13 -3.0407E-13 1.2529E-13 4.0212E-12 1.1738E-13 -3.1722E-13 -3.0407E-13 3.6333E-13 -2.2652E-13 -7.4341E-12 -6.0395E-14 3.7862E-13 1.2529E-13 -2.2652E-13 3.9895E-13 9.2223E-12 -4.8216E-12 1.2968E-11 4.0212E-12 -7.4341E-12 9.2223E-12 3.0380E-10 # lat0 lon0 xBary yBary zBary JD0 -9.244635 151.049966 0.586346 -0.126670 -0.779333 2457403.138029 # Heliocentric elements and errors Epoch: 2457400.5000 = 2016/01/13 Mean Anomaly: 16.72655 +/- 0.027 Argument of Peri: 151.32086 +/- 0.075 Long of Asc Node: 312.81957 +/- 0.001 Inclination: 28.01610 +/- 0.001 Eccentricity: 0.46791610 +/- 0.0007 Semi-Major Axis: 76.48275483 +/- 0.0674 Time of Perihelion: 2446049.1474 +/- 10.2 Perihelion: 40.69524213 +/- 0.0664 Aphelion: 112.27026754 +/- 0.1136 Period (y) 668.8881 +/- 0.88 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.08250382 +/- 0.0011 Ecliptic Y 22.28498833 +/- 0.0006 Ecliptic Z -7.19358912 +/- 0.0002 Ecliptic XDOT -0.00178020 +/- 0.0000 Ecliptic YDOT -0.00198818 +/- 0.0000 Ecliptic ZDOT -0.00141377 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.56106379 +/- 0.0010 Geocenter to KBO 44.77533611 +/- 0.0013 # Hcoef: 9.07
The following table shows the complete astrometric record for 17AC64. 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 (17AC64) followed by the observatory code and reference code for the source of the astrometry.
2016 01 15.637240 09 59 17.15 +02 26 39.5 17AC64 T09 C~81Bj 2016 03 04.422338 09 55 50.99 +02 38 15.6 17AC64 T09 C~81Bj 2016 03 04.437321 09 55 50.94 +02 38 16.0 17AC64 T09 C~81Bj 2017 01 02.52725 10 03 37.98 +01 27 05.7 25.1i 17AC64 T09 C~81Bj 2017 01 02.54946 10 03 37.91 +01 27 05.7 25.0i 17AC64 T09 C~81Bj 2017 01 02.63517 10 03 37.66 +01 27 05.9 25.8g 17AC64 T09 C~81Bj 2017 01 21.44099 10 02 34.21 +01 28 07.9 24.9z 17AC64 T09 C~81Bj 2017 01 21.45826 10 02 34.13 +01 28 07.9 25.1z 17AC64 T09 C~81Bj 2017 01 21.48580 10 02 34.04 +01 28 08.3 25.0z 17AC64 T09 C~81Bj 2017 01 21.51187 10 02 33.91 +01 28 08.4 24.8z 17AC64 T09 C~81Bj 2017 01 21.53790 10 02 33.82 +01 28 08.6 24.8z 17AC64 T09 C~81Bj 2017 01 21.54547 10 02 33.80 +01 28 08.6 25.2z 17AC64 T09 C~81Bj 2017 01 21.56003 10 02 33.73 +01 28 08.9 24.9z 17AC64 T09 C~81Bj 2017 01 23.36852 10 02 26.72 +01 28 23.9 25.8r 17AC64 T09 C~81Bj 2017 01 23.41024 10 02 26.55 +01 28 24.2 25.7r 17AC64 T09 C~81Bj 2017 01 23.48534 10 02 26.25 +01 28 24.7 25.8i 17AC64 T09 C~81Bj 2017 01 23.52648 10 02 26.11 +01 28 25.1 25.5i 17AC64 T09 C~81Bj 2017 01 23.53459 10 02 26.06 +01 28 24.9 26.2i 17AC64 T09 C~81Bj 2017 01 23.59947 10 02 25.82 +01 28 25.8 25.4i 17AC64 T09 C~81Bj 2017 02 02.42933 10 01 45.57 +01 30 12.3 26.4r 17AC64 T09 C~81Bj 2017 02 02.44397 10 01 45.49 +01 30 12.1 25.3r 17AC64 T09 C~81Bj 2017 02 02.45546 10 01 45.46 +01 30 12.3 25.8r 17AC64 T09 C~81Bj 2017 02 02.47020 10 01 45.41 +01 30 12.6 25.7r 17AC64 T09 C~81Bj 2017 02 02.47353 10 01 45.38 +01 30 12.6 25.8r 17AC64 T09 C~81Bj 2017 02 23.32237 10 00 14.56 +01 35 46.6 26.2g 17AC64 T09 C~81Bj 2017 02 23.46966 10 00 13.91 +01 35 49.9 25.4r 17AC64 T09 C~81Bj 2017 02 23.48645 10 00 13.81 +01 35 50.1 25.5r 17AC64 T09 C~81Bj 2017 02 23.49694 10 00 13.75 +01 35 50.5 25.5r 17AC64 T09 C~81Bj 2017 02 23.50008 10 00 13.75 +01 35 50.3 25.5r 17AC64 T09 C~81Bj 2017 02 23.50391 10 00 13.73 +01 35 50.6 25.6r 17AC64 T09 C~81Bj 2017 02 23.51193 10 00 13.69 +01 35 50.6 25.9r 17AC64 T09 C~81Bj 2017 02 23.51437 10 00 13.69 +01 35 50.6 25.4r 17AC64 T09 C~81Bj 2017 02 25.33548 10 00 05.80 +01 36 25.9 24.5i 17AC64 T09 C~81Bj 2017 02 25.36876 10 00 05.68 +01 36 25.7 25.1i 17AC64 T09 C~81Bj 2017 02 25.41253 10 00 05.44 +01 36 26.4 24.7i 17AC64 T09 C~81Bj 2017 02 25.41636 10 00 05.40 +01 36 26.6 25.0i 17AC64 T09 C~81Bj 2017 02 25.42020 10 00 05.41 +01 36 26.7 25.7i 17AC64 T09 C~81Bj 2017 02 25.43124 10 00 05.36 +01 36 27.1 25.2i 17AC64 T09 C~81Bj 2017 02 25.43849 10 00 05.32 +01 36 27.1 25.4i 17AC64 T09 C~81Bj 2017 02 25.44233 10 00 05.30 +01 36 27.1 24.9i 17AC64 T09 C~81Bj 2017 03 04.30350 09 59 35.96 +01 38 42.2 25.4z 17AC64 T09 C~81Bj 2017 03 04.31803 09 59 35.87 +01 38 42.4 25.5z 17AC64 T09 C~81Bj 2017 03 04.32520 09 59 35.86 +01 38 42.6 25.7z 17AC64 T09 C~81Bj 2017 03 04.32902 09 59 35.83 +01 38 42.7 25.7z 17AC64 T09 C~81Bj 2017 03 04.34360 09 59 35.76 +01 38 43.1 24.9z 17AC64 T09 C~81Bj 2017 03 04.44130 09 59 35.35 +01 38 45.1 25.4i 17AC64 T09 C~81Bj 2017 03 04.44514 09 59 35.35 +01 38 45.1 25.4i 17AC64 T09 C~81Bj 2017 03 04.45601 09 59 35.29 +01 38 45.4 25.3i 17AC64 T09 C~81Bj 2017 03 04.46328 09 59 35.27 +01 38 45.4 25.9i 17AC64 T09 C~81Bj 2017 03 04.46710 09 59 35.23 +01 38 45.4 25.2i 17AC64 T09 C~81Bj 2017 03 04.47782 09 59 35.19 +01 38 45.9 25.2i 17AC64 T09 C~81Bj 2017 03 04.48502 09 59 35.18 +01 38 46.1 25.4i 17AC64 T09 C~81Bj 2017 03 04.48885 09 59 35.16 +01 38 45.9 25.3i 17AC64 T09 C~81Bj 2017 03 04.49952 09 59 35.09 +01 38 46.2 26.0i 17AC64 T09 C~81Bj 2017 03 04.50666 09 59 35.08 +01 38 46.2 25.2i 17AC64 T09 C~81Bj 2017 03 04.51049 09 59 35.07 +01 38 46.1 25.6i 17AC64 T09 C~81Bj 2017 03 06.49634 09 59 26.78 +01 39 27.0 26.0r 17AC64 T09 C~81Bj 2017 03 06.50449 09 59 26.75 +01 39 26.9 25.9r 17AC64 T09 C~81Bj 2017 03 06.51016 09 59 26.71 +01 39 26.9 25.6r 17AC64 T09 C~81Bj 2017 03 06.51829 09 59 26.69 +01 39 27.0 26.1r 17AC64 T09 C~81Bj 2017 03 06.52393 09 59 26.65 +01 39 27.0 25.4r 17AC64 T09 C~81Bj 2017 03 06.53219 09 59 26.62 +01 39 27.2 25.5r 17AC64 T09 C~81Bj 2017 03 25.24634 09 58 15.46 +01 45 53.3 25.6r 17AC64 T09 C~81Bj 2017 03 25.26003 09 58 15.40 +01 45 53.8 25.9r 17AC64 T09 C~81Bj 2017 03 25.26562 09 58 15.39 +01 45 53.9 25.9r 17AC64 T09 C~81Bj 2017 03 25.27375 09 58 15.33 +01 45 53.9 26.2r 17AC64 T09 C~81Bj 2017 03 25.27935 09 58 15.33 +01 45 54.3 26.4r 17AC64 T09 C~81Bj 2017 03 25.28747 09 58 15.29 +01 45 54.1 26.1r 17AC64 T09 C~81Bj 2017 03 30.25916 09 57 59.17 +01 47 34.5 26.1i 17AC64 T09 C~81Bj 2017 03 30.26317 09 57 59.12 +01 47 34.0 25.7i 17AC64 T09 C~81Bj 2017 03 30.26700 09 57 59.08 +01 47 34.1 25.6i 17AC64 T09 C~81Bj 2017 03 30.27849 09 57 59.12 +01 47 34.8 25.6i 17AC64 T09 C~81Bj 2017 03 30.28622 09 57 59.07 +01 47 35.1 26.2i 17AC64 T09 C~81Bj 2017 03 30.29005 09 57 59.06 +01 47 35.1 26.2i 17AC64 T09 C~81Bj 2018 01 17.46122 10 06 28.16 +00 29 10.9 24.8i 17AC64 T09 C~81Bj 2018 01 17.48332 10 06 28.07 +00 29 10.9 24.8i 17AC64 T09 C~81Bj 2018 01 17.51028 10 06 27.97 +00 29 11.2 25.8i 17AC64 T09 C~81Bj 2018 01 17.53998 10 06 27.87 +00 29 11.1 25.6i 17AC64 T09 C~81Bj 2018 01 17.54536 10 06 27.86 +00 29 11.6 25.3i 17AC64 T09 C~81Bj 2018 01 17.57223 10 06 27.76 +00 29 11.2 25.4i 17AC64 T09 C~81Bj
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 0.01 0.00 0.37
2 0.1336 -3138.71 0.03 -422.81 -0.05
3 0.1336 -3139.55 0.19 -422.70 0.12
4 0.9662 4912.02 0.15 -1986.37 0.09
5 0.9662 4911.03 0.06 -1986.74 0.09
6 0.9665 4907.45 -0.07 -1987.86 0.39
7 1.0179 3993.72 0.04 -2261.72 0.02
8 1.0180 3992.60 -0.08 -2262.14 -0.17
9 1.0181 3991.20 0.10 -2262.24 0.10
10 1.0181 3989.33 -0.25 -2262.82 -0.14
11 1.0182 3988.00 -0.08 -2263.11 -0.08
12 1.0182 3987.72 0.08 -2263.21 -0.09
13 1.0183 3986.63 -0.17 -2263.30 0.02
14 1.0232 3882.84 -0.16 -2285.90 0.11
15 1.0233 3880.35 -0.19 -2286.51 0.03
16 1.0235 3875.95 -0.14 -2287.61 -0.12
17 1.0237 3873.85 0.19 -2287.97 0.05
18 1.0237 3873.21 0.04 -2288.42 -0.29
19 1.0239 3869.53 0.20 -2288.83 0.12
20 1.0508 3266.53 -0.08 -2399.50 0.35
21 1.0508 3265.47 -0.19 -2400.10 -0.10
22 1.0508 3264.98 0.07 -2400.07 0.05
23 1.0509 3264.17 0.22 -2400.05 0.22
24 1.0509 3263.75 0.02 -2400.21 0.10
25 1.1080 1870.64 0.33 -2561.87 -0.33
26 1.1084 1860.35 0.20 -2562.17 0.20
27 1.1084 1858.87 -0.12 -2562.50 -0.05
28 1.1084 1857.89 -0.38 -2562.44 0.07
29 1.1085 1857.96 -0.09 -2562.63 -0.10
30 1.1085 1857.57 -0.22 -2562.45 0.10
31 1.1085 1857.01 -0.23 -2562.66 -0.06
32 1.1085 1857.01 -0.06 -2562.66 -0.05
33 1.1135 1733.80 ( 0.05) -2570.80 ( 0.82)
34 1.1136 1732.19 ( 0.72) -2571.62 ( 0.18)
35 1.1137 1728.57 0.11 -2572.21 -0.19
36 1.1137 1727.94 -0.26 -2572.23 -0.19
37 1.1137 1728.04 0.11 -2572.09 -0.03
38 1.1137 1727.20 0.03 -2571.97 0.14
39 1.1138 1726.64 -0.04 -2572.18 -0.03
40 1.1138 1726.36 -0.05 -2572.29 -0.11
41 1.1326 1266.87 0.21 -2598.94 0.08
42 1.1326 1265.54 -0.15 -2599.22 -0.15
43 1.1326 1265.33 0.12 -2599.09 0.01
44 1.1326 1264.87 -0.08 -2599.15 -0.04
45 1.1327 1263.75 -0.22 -2599.14 0.02
46 1.1329 1257.29 -0.11 -2599.41 0.10
47 1.1329 1257.29 0.14 -2599.41 0.11
48 1.1330 1256.34 -0.08 -2599.44 0.11
49 1.1330 1256.06 0.13 -2599.55 0.03
50 1.1330 1255.50 -0.17 -2599.75 -0.16
51 1.1330 1254.76 -0.19 -2599.49 0.14
52 1.1331 1254.55 0.08 -2599.36 0.30
53 1.1331 1254.34 0.13 -2599.65 0.02
54 1.1331 1253.25 -0.25 -2599.74 -0.03
55 1.1331 1253.11 0.09 -2599.79 -0.06
56 1.1331 1253.00 0.24 -2599.93 -0.19
57 1.1386 1122.23 0.03 -2604.90 0.45
58 1.1386 1121.84 0.18 -2605.15 0.22
59 1.1386 1121.28 -0.00 -2605.36 0.03
60 1.1386 1120.96 0.22 -2605.37 0.04
61 1.1386 1120.40 0.03 -2605.58 -0.15
62 1.1387 1119.91 0.08 -2605.55 -0.10
63 1.1899 -14.79 0.39 -2615.25 -0.15
64 1.1899 -15.80 0.13 -2615.09 -0.01
65 1.1899 -15.98 0.27 -2615.05 0.03
66 1.1900 -16.82 -0.12 -2615.36 -0.29
67 1.1900 -16.96 0.05 -2614.99 0.08
68 1.1900 -17.45 0.01 -2615.38 -0.33
69 1.2036 -278.99 0.08 -2605.43 0.03
70 1.2036 -279.52 -0.24 -2606.15 -0.70
71 1.2036 -280.12 -0.64 -2606.27 -0.83
72 1.2037 -279.80 0.27 -2605.40 0.01
73 1.2037 -280.61 -0.14 -2605.38 0.02
74 1.2037 -280.75 -0.08 -2605.44 -0.04
75 2.0064 8521.73 0.04 -4354.41 0.19
76 2.0064 8520.46 -0.05 -4354.89 0.03
77 2.0065 8518.95 -0.13 -4355.13 0.18
78 2.0066 8517.57 0.09 -4355.74 -0.01
79 2.0066 8517.26 0.06 -4355.33 0.48
80 2.0067 8515.99 0.23 -4356.23 -0.03
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.
17AC64 quality flag:2 Type: 4:1EEE 4:1EEE SCATNEAR axisobj 76.006 76.205 75.809 ecceobj 0.466 0.469 0.464 incobj 28.069 28.069 28.069 qmin 39.806 39.762 38.347 qmax 114.241 114.084 114.817 amean 75.869 75.869 75.590 amin 74.716 74.695 74.471 amax 77.476 77.460 77.474 emean 0.463 0.463 0.470 emin 0.451 0.450 0.449 emax 0.476 0.476 0.492 imean 29.549 29.574 28.947 imin 29.188 29.164 28.037 imax 29.822 29.860 30.001 excite_mean 0.677 0.677 0.675 fracstop 1.000 1.000 1.000 cjmean 2.844 2.844 2.845 libcent 0 179.5 180.1 -180.0 libamp 0 170.5 169.8 -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 238.2 240.6 194.1 kozaiamp 89.7 91.0 180.0