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: 17YG5 # Created Fri Nov 22 02:10:55 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 70 observations of 70 # Arc: 4.21y # First observation: 2017/12/14 # Last observation: 2022/03/01 # Chi-squared of fit: 59.68 DOF: 134 RMS: 0.16 # Min/Max residuals: -0.73 0.52 # Exact a, adot, b, bdot, g, gdot: 3.939518E-05 3.222282E-01 -8.355339E-06 -6.314300E-02 1.241656E-01 -1.386705E-01 # Covariance matrix: 1.8323E-13 -2.1659E-11 9.2926E-16 3.5927E-12 1.0089E-12 -1.3323E-11 -2.1659E-11 2.2456E-07 -5.2442E-12 -3.1947E-08 5.8355E-09 1.1106E-07 9.2926E-16 -5.2442E-12 1.8158E-13 -4.6477E-12 6.5027E-13 -5.7450E-12 3.5927E-12 -3.1947E-08 -4.6477E-12 6.7924E-09 1.0910E-09 -2.3516E-08 1.0089E-12 5.8355E-09 6.5027E-13 1.0910E-09 2.1118E-09 -4.9492E-09 -1.3323E-11 1.1106E-07 -5.7450E-12 -2.3516E-08 -4.9492E-09 8.6379E-08 # lat0 lon0 xBary yBary zBary JD0 -24.089794 86.244192 0.068332 -0.403233 -0.902282 2458101.912231 # Heliocentric elements and errors Epoch: 2458102.5000 = 2017/12/15 Mean Anomaly: 358.49362 +/- 0.001 Argument of Peri: 296.53101 +/- 0.025 Long of Asc Node: 201.98538 +/- 0.027 Inclination: 23.72934 +/- 0.000 Eccentricity: 0.89142173 +/- 0.0000 Semi-Major Axis: 68.21781506 +/- 0.0000 Time of Perihelion: 2458963.6465 +/- 0.8 Perihelion: 7.40697253 +/- 0.0003 Aphelion: 129.02865759 +/- 0.0003 Period (y) 563.4494 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 0.61230944 +/- 0.0000 Ecliptic Y 8.31218072 +/- 0.0000 Ecliptic Z -3.28739270 +/- 0.0000 Ecliptic XDOT -0.00730424 +/- 0.0000 Ecliptic YDOT -0.00289218 +/- 0.0000 Ecliptic ZDOT -0.00002313 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 8.95973337 +/- 0.0000 Geocenter to KBO 8.05393623 +/- 0.0000 # Hcoef: 12.38
The following table shows the complete astrometric record for 17YG5. 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 (17YG5) followed by the observatory code and reference code for the source of the astrometry.
2017 12 14.41143 05 46 17.149 -00 41 42.69 17YG5 F51 C~2TwN 2017 12 14.41143 05 46 17.161 -00 41 42.64 17YG5 F51 C~3TH8 2017 12 14.42474 05 46 16.888 -00 41 43.34 17YG5 F51 C~2TwN 2017 12 14.42474 05 46 16.914 -00 41 43.60 17YG5 F51 C~3TH8 2017 12 14.43803 05 46 16.660 -00 41 44.40 17YG5 F51 C~2TwN 2017 12 14.43803 05 46 16.647 -00 41 44.64 17YG5 F51 C~3TH8 2017 12 14.45135 05 46 16.429 -00 41 45.08 17YG5 F51 C~2TwN 2017 12 14.45135 05 46 16.397 -00 41 45.65 17YG5 F51 C~3TH8 2017 12 23.35957 05 43 38.805 -00 47 39.07 22.1w 17YG5 F51 C~2TwN 2017 12 23.38296 05 43 38.394 -00 47 39.54 21.9w 17YG5 F51 C~2TwN 2017 12 23.39469 05 43 38.169 -00 47 39.70 21.9w 17YG5 F51 C~2TwN 2017 12 25.20060 05 43 06.36 -00 48 19.6 22.1G 17YG5 807 C~2TwN 2017 12 25.20704 05 43 06.24 -00 48 19.7 21.9G 17YG5 807 C~2TwN 2017 12 25.21349 05 43 06.11 -00 48 19.6 21.9G 17YG5 807 C~2TwN 2017 12 25.42024 05 43 02.513 -00 48 24.36 22.3w 17YG5 F51 C~2TwN 2017 12 25.43235 05 43 02.303 -00 48 24.69 22.6w 17YG5 F51 C~2TwN 2017 12 25.44450 05 43 02.078 -00 48 25.00 22.0w 17YG5 F51 C~2TwN 2017 12 25.45671 05 43 01.865 -00 48 25.14 22.3w 17YG5 F51 C~2TwN 2017 12 26.40133 05 42 45.29 -00 48 41.6 17YG5 291 C~2TwN 2017 12 26.44019 05 42 44.60 -00 48 42.2 22.4R 17YG5 291 C~2TwN 2019 02 16.06942 06 54 08.04 -03 27 43.2 21.0R 17YG5 304 C~2zsr 2019 02 16.13653 06 54 07.41 -03 27 33.2 21.6R 17YG5 304 C~2zsr 2019 02 20.13986 06 53 35.41 -03 17 34.4 21.4R 17YG5 304 C~2zsr 2019 02 20.14770 06 53 35.35 -03 17 33.5 20.9R 17YG5 304 C~2zsr 2019 04 05.147990 06 56 17.931 -01 16 37.44 21.8G 17YG5 G37 C~34cK 2019 04 05.193990 06 56 18.565 -01 16 30.19 17YG5 G37 C~34cL 2019 11 28.542214 08 52 44.080 -07 15 50.49 21.3G 17YG5 568 C~3d0B 2019 11 28.544782 08 52 44.085 -07 15 50.95 21.4G 17YG5 568 C~3d0B 2019 11 28.547350 08 52 44.091 -07 15 51.37 21.4G 17YG5 568 C~3d0B 2020 01 18.324570 08 45 29.290 -08 16 28.16 21.6G 17YG5 G37 C~3k67 2020 01 18.357850 08 45 28.732 -08 16 27.03 17YG5 G37 C~3k67 2020 01 22.12805 08 44 24.70 -08 13 13.7 20.9G 17YG5 X01 C~3qUB 2020 01 22.20299 08 44 23.38 -08 13 09.3 20.8G 17YG5 X01 C~3qUB 2020 01 22.28009 08 44 22.01 -08 13 04.5 20.8G 17YG5 X01 C~3qUB 2020 01 29.39349 08 42 17.656 -08 04 00.27 21.2w 17YG5 F52 C~3d0B 2020 01 29.40319 08 42 17.479 -08 03 59.51 21.2w 17YG5 F52 C~3d0B 2020 01 29.41297 08 42 17.312 -08 03 58.56 21.2w 17YG5 F52 C~3d0B 2020 01 29.42273 08 42 17.123 -08 03 57.49 21.3w 17YG5 F52 C~3d0B 2020 01 30.471922 08 41 58.623 -08 02 17.93 21.2G 17YG5 568 C~3k67 2020 01 30.473794 08 41 58.587 -08 02 17.73 21.2G 17YG5 568 C~3k67 2020 01 30.475665 08 41 58.553 -08 02 17.54 21.2G 17YG5 568 C~3k67 2020 03 23.30881 08 31 37.793 -05 28 25.83 21.4w 17YG5 F51 C~3nUz 2020 03 23.32056 08 31 37.773 -05 28 23.38 21.4w 17YG5 F51 C~3nUz 2020 03 23.33232 08 31 37.745 -05 28 20.89 21.5w 17YG5 F51 C~3nUz 2020 05 20.279357 08 44 01.688 -02 52 30.46 21.0G 17YG5 568 C~3wrI 2020 05 20.281229 08 44 01.733 -02 52 30.31 20.8G 17YG5 568 C~3wrI 2021 01 17.21150 10 34 22.13 -10 53 35.6 21.0G 17YG5 X01 C~4YIO 2021 01 17.30434 10 34 21.31 -10 53 34.9 21.1G 17YG5 X01 C~4YIO 2021 02 17.427220 10 27 36.831 -10 13 04.28 21.3w 17YG5 F52 C~4ZXp 2021 02 17.438851 10 27 36.626 -10 13 02.25 21.3w 17YG5 F52 C~4ZXp 2021 02 17.450479 10 27 36.417 -10 13 00.79 21.1w 17YG5 F52 C~4ZXp 2021 02 17.462073 10 27 36.227 -10 12 59.29 21.0w 17YG5 F52 C~4ZXp 2021 03 18.365110 10 20 12.209 -08 44 08.64 21.3w 17YG5 F51 C~4gZk 2021 03 18.377440 10 20 12.043 -08 44 05.87 21.3w 17YG5 F51 C~4gZk 2021 03 18.389765 10 20 11.864 -08 44 03.39 21.4w 17YG5 F51 C~4gZk 2021 03 18.402084 10 20 11.706 -08 44 00.81 21.4w 17YG5 F51 C~4gZk 2021 04 08.295198 10 16 50.026 -07 28 13.08 21.1w 17YG5 F51 C~4iNa 2021 04 08.340788 10 16 49.746 -07 28 02.72 21.4w 17YG5 F51 C~4iNa 2021 04 08.354120 10 16 49.701 -07 27 59.91 21.3w 17YG5 F51 C~4iNa 2021 04 14.255858 10 16 23.403 -07 07 12.61 21.3w 17YG5 F51 C~4iNa 2021 04 14.269170 10 16 23.345 -07 07 09.86 21.5w 17YG5 F51 C~4iNa 2021 04 14.282476 10 16 23.289 -07 07 07.13 21.5w 17YG5 F51 C~4iNa 2021 04 14.295816 10 16 23.251 -07 07 04.41 21.4w 17YG5 F51 C~4iNa 2022 02 11.591223 12 04 55.246 -11 14 28.77 22.0w 17YG5 F52 C~5SFx 2022 02 11.611590 12 04 55.040 -11 14 26.93 22.0w 17YG5 F52 C~5SFx 2022 02 11.621788 12 04 54.963 -11 14 25.94 21.9w 17YG5 F52 C~5SFx 2022 03 01.453082 12 01 28.913 -10 40 01.98 21.6w 17YG5 F52 C~5SFx 2022 03 01.463295 12 01 28.769 -10 40 00.64 21.8w 17YG5 F52 C~5SFx 2022 03 01.473553 12 01 28.631 -10 39 59.26 21.6w 17YG5 F52 C~5SFx 2022 03 01.483745 12 01 28.483 -10 39 57.87 21.7w 17YG5 F52 C~5SFx
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 0.34 0.00 0.07
2 0.0000 0.00 0.52 0.00 0.12
3 0.0000 0.00 0.41 0.00 -0.12
4 0.0000 0.00 0.02 0.00 0.14
5 0.0001 0.00 -0.01 0.00 -0.44
6 0.0001 0.00 0.19 0.00 -0.20
7 0.0001 0.00 0.32 0.00 -0.16
8 0.0001 0.00 -0.16 0.00 -0.73
9 0.0245 0.00 -0.17 0.00 -0.10
10 0.0246 0.00 0.01 0.00 0.03
11 0.0246 0.00 -0.19 0.00 0.16
12 0.0295 0.00 -0.06 0.00 -0.13
13 0.0296 0.00 -0.13 0.00 -0.11
14 0.0296 0.00 -0.34 0.00 0.12
15 0.0301 0.00 -0.05 0.00 0.25
16 0.0302 0.00 0.06 0.00 0.15
17 0.0302 0.00 -0.04 0.00 0.07
18 0.0302 0.00 0.06 0.00 0.16
19 0.0328 0.00 -0.19 0.00 0.12
20 0.0329 0.00 -0.21 0.00 0.13
21 1.1736 0.00 -0.05 0.00 -0.01
22 1.1738 0.00 -0.11 0.00 0.19
23 1.1847 0.00 -0.04 0.00 0.07
24 1.1848 0.00 -0.06 0.00 -0.23
25 1.3052 0.00 0.08 0.00 0.02
26 1.3054 0.00 -0.32 0.00 0.14
27 1.9552 0.00 0.05 0.00 0.07
28 1.9552 0.00 0.04 0.00 0.04
29 1.9552 0.00 0.05 0.00 0.05
30 2.0942 0.00 -0.29 0.00 0.22
31 2.0943 0.00 -0.08 0.00 -0.04
32 2.1046 0.00 0.05 0.00 0.04
33 2.1048 0.00 0.13 0.00 -0.02
34 2.1050 0.00 0.08 0.00 0.13
35 2.1245 0.00 -0.02 0.00 0.08
36 2.1245 0.00 -0.03 0.00 -0.06
37 2.1246 0.00 0.12 0.00 -0.01
38 2.1246 0.00 -0.06 0.00 0.16
39 2.1275 0.00 0.08 0.00 0.03
40 2.1275 0.00 0.05 0.00 0.04
41 2.1275 0.00 0.05 0.00 0.05
42 2.2721 0.00 0.09 0.00 0.03
43 2.2722 0.00 0.15 0.00 0.01
44 2.2722 0.00 0.07 0.00 0.04
45 2.4308 0.00 0.05 0.00 0.03
46 2.4309 0.00 0.00 0.00 0.02
47 3.0932 0.00 -0.01 0.00 -0.00
48 3.0935 0.00 -0.14 0.00 -0.15
49 3.1787 0.00 0.39 0.00 -0.19
50 3.1787 0.00 0.20 0.00 0.18
51 3.1788 0.00 -0.05 0.00 -0.01
52 3.1788 0.00 -0.02 0.00 -0.16
53 3.2579 0.00 0.05 0.00 -0.01
54 3.2579 0.00 0.07 0.00 0.13
55 3.2580 0.00 -0.11 0.00 -0.03
56 3.2580 0.00 0.03 0.00 -0.08
57 3.3152 0.00 -0.30 0.00 -0.51
58 3.3153 0.00 -0.24 0.00 0.07
59 3.3154 0.00 0.33 0.00 0.01
60 3.3315 0.00 0.12 0.00 0.02
61 3.3316 0.00 -0.02 0.00 0.01
62 3.3316 0.00 -0.13 0.00 -0.02
63 3.3316 0.00 0.03 0.00 -0.07
64 4.1620 0.00 0.11 0.00 -0.02
65 4.1621 0.00 -0.12 0.00 0.04
66 4.1621 0.00 0.16 0.00 0.13
67 4.2109 0.00 -0.11 0.00 0.11
68 4.2110 0.00 -0.09 0.00 -0.00
69 4.2110 0.00 0.02 0.00 -0.09
70 4.2110 0.00 -0.03 0.00 -0.15
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.
17YG5 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 69.693 69.690 69.695 ecceobj 0.893 0.893 0.893 incobj 23.605 23.605 23.605 qmin 7.160 7.150 7.014 qmax 182.973 169.060 336.786 amean 76.122 68.009 113.657 amin 63.724 51.887 66.657 amax 95.184 88.233 172.103 emean 0.901 0.889 0.930 emin 0.881 0.857 0.890 emax 0.922 0.916 0.957 imean 24.422 23.702 23.555 imin 23.774 23.369 22.879 imax 24.853 24.096 24.075 excite_mean 0.991 0.976 1.012 fracstop 0.011 0.009 0.007 cjmean 1.657 1.706 1.556 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 302.5 302.0 300.6 kozaiamp 6.1 5.5 4.3