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: 16SY55 # Created Wed Apr 24 01:17:59 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 109 observations of 109 # Arc: 5.19y # First observation: 2014/09/25 # Last observation: 2019/12/04 # Chi-squared of fit: 64.32 DOF: 212 RMS: 0.14 # Min/Max residuals: -0.45 0.43 # Exact a, adot, b, bdot, g, gdot: 1.596751E-05 3.102226E-02 -1.250519E-06 -8.207790E-04 2.862862E-02 -4.691543E-03 # Covariance matrix: 2.4989E-13 -1.3606E-13 -3.7913E-15 2.9465E-15 4.3963E-15 -6.1902E-13 -1.3606E-13 1.1808E-13 1.4505E-15 -2.6486E-15 3.5964E-14 6.1332E-13 -3.7913E-15 1.4505E-15 1.2616E-13 -2.6508E-14 -5.1726E-15 1.0523E-14 2.9465E-15 -2.6486E-15 -2.6508E-14 6.2601E-15 -1.5339E-17 -1.4899E-14 4.3963E-15 3.5964E-14 -5.1726E-15 -1.5339E-17 1.0585E-13 1.5411E-13 -6.1902E-13 6.1332E-13 1.0523E-14 -1.4899E-14 1.5411E-13 3.3814E-12 # lat0 lon0 xBary yBary zBary JD0 -17.657924 21.980615 0.346360 -0.286150 -0.899421 2456925.759868 # Heliocentric elements and errors Epoch: 2456926.5000 = 2014/09/26 Mean Anomaly: 308.40614 +/- 0.008 Argument of Peri: 335.16384 +/- 0.014 Long of Asc Node: 116.97719 +/- 0.000 Inclination: 17.27703 +/- 0.000 Eccentricity: 0.18389132 +/- 0.0001 Semi-Major Axis: 39.36264797 +/- 0.0019 Time of Perihelion: 2469854.1752 +/- 6.1 Perihelion: 32.12419887 +/- 0.0027 Aphelion: 46.60109707 +/- 0.0032 Period (y) 246.9646 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.86714407 +/- 0.0004 Ecliptic Y 12.49202708 +/- 0.0001 Ecliptic Z -10.59552897 +/- 0.0001 Ecliptic XDOT -0.00153362 +/- 0.0000 Ecliptic YDOT 0.00257759 +/- 0.0000 Ecliptic ZDOT 0.00006141 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.83068250 +/- 0.0003 Geocenter to KBO 34.93020296 +/- 0.0004 # Hcoef: 7.98
The following table shows the complete astrometric record for 16SY55. 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 (16SY55) followed by the observatory code and reference code for the source of the astrometry.
2014 09 25.25909 01 47 31.053 -07 50 29.28 22.6i 16SY55 W84 C~55Zw 2014 11 27.06097 01 42 19.140 -08 14 59.12 23.4i 16SY55 W84 C~55Zw 2014 12 24.12239 01 41 01.001 -08 10 34.95 23.7g 16SY55 W84 C~55Zw 2014 12 24.12375 01 41 01.006 -08 10 34.89 23.0r 16SY55 W84 C~55Zw 2015 01 14.06682 01 40 50.436 -08 00 42.34 23.3r 16SY55 W84 C~55Zw 2015 09 04.33612 01 55 37.589 -06 58 59.96 22.7z 16SY55 W84 C~55Zw 2015 11 15.18655 01 49 55.958 -07 36 46.66 23.8r 16SY55 W84 C~55Zw 2016 09 27.43401 02 00 51.05 -06 36 47.5 23.7g 16SY55 568 C~2eAH 2016 09 27.50625 02 00 50.71 -06 36 50.3 23.7g 16SY55 568 C~2eAH 2016 09 27.55355 02 00 50.48 -06 36 52.2 24.5g 16SY55 568 C~2eAH 2016 09 28.44300 02 00 46.35 -06 37 26.2 24.1g 16SY55 568 C~2eAH 2016 09 28.56272 02 00 45.77 -06 37 30.8 23.5g 16SY55 568 C~2eAH 2016 09 29.45468 02 00 41.57 -06 38 04.7 23.6g 16SY55 568 C~2eAH 2016 09 29.51512 02 00 41.28 -06 38 07.0 23.8g 16SY55 568 C~2eAH 2016 09 29.57452 02 00 41.00 -06 38 09.3 24.4g 16SY55 568 C~2eAH 2016 10 03.23625 02 00 23.323 -06 40 26.04 23.4r 16SY55 W84 C~55Zw 2016 10 03.23761 02 00 23.315 -06 40 26.07 23.4i 16SY55 W84 C~55Zw 2016 10 03.23897 02 00 23.317 -06 40 25.88 23.7g 16SY55 W84 C~55Zw 2016 10 23.20688 01 58 39.139 -06 51 22.01 23.8r 16SY55 W84 C~55Zw 2017 09 18.38916 02 08 20.923 -05 51 57.79 23.2i 16SY55 W84 C~55Zw 2017 09 26.28827 02 07 47.485 -05 57 07.75 22.5r 16SY55 W84 C~55Zw 2017 09 26.28964 02 07 47.483 -05 57 07.70 23.1g 16SY55 W84 C~55Zw 2017 10 22.21056 02 05 36.603 -06 12 06.43 23.6r 16SY55 W84 C~55Zw 2017 11 15.17764 02 03 29.170 -06 20 47.28 22.6i 16SY55 W84 C~55Zw 2017 11 15.17902 02 03 29.168 -06 20 47.23 23.0r 16SY55 W84 C~55Zw 2017 11 15.18039 02 03 29.157 -06 20 47.28 23.6g 16SY55 W84 C~55Zw 2017 11 27.14363 02 02 32.421 -06 22 32.25 22.5z 16SY55 W84 C~55Zw 2017 11 27.14500 02 02 32.421 -06 22 31.99 22.6i 16SY55 W84 C~55Zw 2017 12 14.06076 02 01 28.241 -06 21 41.64 24.1g 16SY55 W84 C~55Zw 2018 01 05.07979 02 00 43.354 -06 14 50.23 22.9z 16SY55 W84 C~55Zw 2018 11 06.17085 02 11 10.474 -05 38 54.44 23.2r 16SY55 W84 C~55Zw 2018 11 06.17224 02 11 10.480 -05 38 54.54 23.4i 16SY55 W84 C~55Zw 2018 11 06.17362 02 11 10.468 -05 38 54.56 23.7g 16SY55 W84 C~55Zw 2019 09 27.53109 02 21 33.40 -04 37 58.8 23.6g 16SY55 T09 C~7lte 2019 09 27.53425 02 21 33.39 -04 37 58.9 23.6g 16SY55 T09 C~7lte 2019 09 27.53672 02 21 33.38 -04 37 59.0 23.7g 16SY55 T09 C~7lte 2019 10 23.50004 02 19 23.40 -04 52 57.5 22.8z 16SY55 T09 C~7bNy 2019 10 23.50387 02 19 23.39 -04 52 57.6 22.7z 16SY55 T09 C~7bNy 2019 10 23.51827 02 19 23.31 -04 52 58.0 22.8z 16SY55 T09 C~7bNy 2019 10 23.52209 02 19 23.29 -04 52 58.1 22.7z 16SY55 T09 C~7bNy 2019 10 23.54029 02 19 23.20 -04 52 58.3 22.9z 16SY55 T09 C~7bNy 2019 10 23.54411 02 19 23.18 -04 52 58.6 22.6z 16SY55 T09 C~7bNy 2019 10 23.54794 02 19 23.16 -04 52 59.0 22.7z 16SY55 T09 C~7bNy 2019 10 23.56228 02 19 23.07 -04 52 59.3 22.6z 16SY55 T09 C~7bNy 2019 10 23.56611 02 19 23.05 -04 52 59.3 22.8z 16SY55 T09 C~7bNy 2019 10 27.28540 02 19 02.77 -04 54 45.2 24.6r 16SY55 T09 C~7xTN 2019 10 27.29655 02 19 02.70 -04 54 45.6 24.2r 16SY55 T09 C~7xTN 2019 10 27.30773 02 19 02.63 -04 54 45.9 23.6r 16SY55 T09 C~7xTN 2019 10 27.31891 02 19 02.57 -04 54 46.1 23.7r 16SY55 T09 C~7xTN 2019 10 27.41777 02 19 02.03 -04 54 48.8 23.7i 16SY55 T09 C~7xTN 2019 10 27.42160 02 19 01.99 -04 54 49.1 24.2i 16SY55 T09 C~7xTN 2019 10 27.43602 02 19 01.91 -04 54 49.4 24.2i 16SY55 T09 C~7xTN 2019 10 27.43985 02 19 01.89 -04 54 49.4 24.1i 16SY55 T09 C~7xTN 2019 10 27.45429 02 19 01.81 -04 54 49.9 24.0i 16SY55 T09 C~7xTN 2019 10 27.45813 02 19 01.79 -04 54 49.9 24.0i 16SY55 T09 C~7xTN 2019 10 27.47257 02 19 01.71 -04 54 50.5 23.7i 16SY55 T09 C~7xTN 2019 10 27.47640 02 19 01.69 -04 54 50.5 23.6i 16SY55 T09 C~7xTN 2019 10 31.48475 02 18 39.68 -04 56 35.9 22.9z 16SY55 T09 C~7bNy 2019 10 31.48859 02 18 39.66 -04 56 35.9 23.1z 16SY55 T09 C~7bNy 2019 10 31.50685 02 18 39.56 -04 56 36.2 22.9z 16SY55 T09 C~7bNy 2019 10 31.51068 02 18 39.54 -04 56 36.7 22.8z 16SY55 T09 C~7bNy 2019 10 31.53272 02 18 39.41 -04 56 37.0 22.8z 16SY55 T09 C~7bNy 2019 10 31.54707 02 18 39.34 -04 56 37.4 22.8z 16SY55 T09 C~7bNy 2019 10 31.55090 02 18 39.31 -04 56 37.4 22.8z 16SY55 T09 C~7bNy 2019 11 01.43281 02 18 34.50 -04 56 59.3 24.0g 16SY55 T09 C~7bNy 2019 11 01.44414 02 18 34.42 -04 56 59.4 23.6g 16SY55 T09 C~7bNy 2019 11 01.52311 02 18 33.98 -04 57 01.5 24.8g 16SY55 T09 C~7xTN 2019 11 01.53430 02 18 33.91 -04 57 01.8 24.6g 16SY55 T09 C~7xTN 2019 11 01.56788 02 18 33.71 -04 57 02.6 24.2g 16SY55 T09 C~7xTN 2019 11 01.57905 02 18 33.66 -04 57 03.1 24.0g 16SY55 T09 C~7bNy 2019 11 01.58288 02 18 33.63 -04 57 03.0 24.2g 16SY55 T09 C~7xTN 2019 11 02.26339 02 18 29.94 -04 57 19.5 23.8i 16SY55 T09 C~7bNy 2019 11 02.26722 02 18 29.90 -04 57 19.5 23.9i 16SY55 T09 C~7bNy 2019 11 02.28153 02 18 29.83 -04 57 19.8 23.9i 16SY55 T09 C~7bNy 2019 11 02.29968 02 18 29.75 -04 57 20.6 22.9i 16SY55 T09 C~7bNy 2019 11 02.30351 02 18 29.70 -04 57 20.5 23.4i 16SY55 T09 C~7bNy 2019 11 02.31783 02 18 29.63 -04 57 20.6 22.9i 16SY55 T09 C~7bNy 2019 11 27.19594 02 16 20.26 -05 03 44.3 23.4z 16SY55 T09 C~7bNy 2019 11 27.19982 02 16 20.25 -05 03 44.3 23.9z 16SY55 T09 C~7bNy 2019 11 27.21803 02 16 20.16 -05 03 44.8 23.5z 16SY55 T09 C~7bNy 2019 11 27.22568 02 16 20.12 -05 03 44.4 23.5z 16SY55 T09 C~7bNy 2019 11 27.23999 02 16 20.06 -05 03 44.4 23.7z 16SY55 T09 C~7bNy 2019 11 27.24382 02 16 20.06 -05 03 44.9 23.1z 16SY55 T09 C~7bNy 2019 11 27.24766 02 16 20.03 -05 03 44.4 23.3z 16SY55 T09 C~7bNy 2019 11 27.26197 02 16 19.97 -05 03 44.4 23.3z 16SY55 T09 C~7bNy 2019 11 27.26964 02 16 19.92 -05 03 44.8 23.0z 16SY55 T09 C~7bNy 2019 11 27.30664 02 16 19.73 -05 03 45.1 22.8i 16SY55 T09 C~7bNy 2019 11 27.31047 02 16 19.72 -05 03 44.9 22.8i 16SY55 T09 C~7bNy 2019 11 27.32876 02 16 19.64 -05 03 44.9 23.0i 16SY55 T09 C~7bNy 2019 11 27.33643 02 16 19.60 -05 03 44.9 23.1i 16SY55 T09 C~7bNy 2019 11 27.35091 02 16 19.53 -05 03 45.3 23.3i 16SY55 T09 C~7bNy 2019 11 27.35474 02 16 19.51 -05 03 45.1 23.9i 16SY55 T09 C~7bNy 2019 11 27.35856 02 16 19.49 -05 03 45.3 23.3i 16SY55 T09 C~7bNy 2019 11 27.37303 02 16 19.43 -05 03 45.3 23.5i 16SY55 T09 C~7bNy 2019 11 27.44597 02 16 19.07 -05 03 46.1 23.4r 16SY55 T09 C~7bNy 2019 11 27.44980 02 16 19.07 -05 03 46.1 23.3r 16SY55 T09 C~7bNy 2019 11 28.34819 02 16 14.87 -05 03 50.6 24.2g 16SY55 T09 C~7xTN 2019 11 28.42107 02 16 14.53 -05 03 51.1 24.4g 16SY55 T09 C~7xTN 2019 11 28.43616 02 16 14.46 -05 03 51.1 24.5g 16SY55 T09 C~7xTN 2019 11 29.32156 02 16 10.40 -05 03 55.5 23.2r 16SY55 T09 C~7bNy 2019 11 29.32540 02 16 10.38 -05 03 55.5 23.1r 16SY55 T09 C~7bNy 2019 11 29.35191 02 16 10.25 -05 03 55.5 23.5r 16SY55 T09 C~7bNy 2019 11 29.36609 02 16 10.18 -05 03 55.6 23.5r 16SY55 T09 C~7bNy 2019 12 04.38500 02 15 48.04 -05 04 07.0 22.2i 16SY55 T09 C~7xTN 2019 12 04.40708 02 15 47.94 -05 04 07.0 22.3i 16SY55 T09 C~7xTN 2019 12 04.42904 02 15 47.84 -05 04 07.3 22.8i 16SY55 T09 C~7xTN 2019 12 04.43288 02 15 47.84 -05 04 07.3 22.9i 16SY55 T09 C~7xTN 2019 12 04.43671 02 15 47.81 -05 04 07.3 23.0i 16SY55 T09 C~7xTN 2019 12 04.45483 02 15 47.73 -05 04 07.3 23.3i 16SY55 T09 C~7xTN
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 0.16 0.00 0.24
2 0.1719 0.00 0.05 0.00 0.02
3 0.2460 0.00 -0.12 0.00 0.01
4 0.2460 0.00 -0.01 0.00 0.04
5 0.3034 0.00 -0.01 0.00 0.06
6 0.9420 0.00 -0.00 0.00 -0.32
7 1.1387 0.00 -0.09 0.00 -0.09
8 2.0073 0.00 -0.09 0.00 0.10
9 2.0075 0.00 -0.06 0.00 0.08
10 2.0077 0.00 -0.14 0.00 -0.01
11 2.0101 0.00 -0.04 0.00 0.04
12 2.0104 0.00 -0.14 0.00 0.01
13 2.0129 0.00 -0.20 0.00 0.04
14 2.0130 0.00 -0.16 0.00 0.03
15 2.0132 0.00 -0.05 0.00 -0.02
16 2.0232 0.00 0.11 0.00 -0.04
17 2.0232 0.00 0.09 0.00 -0.02
18 2.0232 0.00 0.22 0.00 0.22
19 2.0779 0.00 0.06 0.00 0.18
20 2.9819 0.00 0.08 0.00 0.01
21 3.0035 0.00 -0.02 0.00 -0.07
22 3.0035 0.00 0.04 0.00 0.03
23 3.0745 0.00 0.23 0.00 -0.22
24 3.1401 0.00 0.02 0.00 -0.09
25 3.1401 0.00 0.09 0.00 -0.02
26 3.1401 0.00 0.03 0.00 -0.05
27 3.1729 0.00 0.07 0.00 -0.32
28 3.1729 0.00 0.17 0.00 -0.05
29 3.2192 0.00 0.15 0.00 0.03
30 3.2795 0.00 -0.08 0.00 0.00
31 4.1147 0.00 -0.06 0.00 -0.03
32 4.1148 0.00 0.15 0.00 -0.10
33 4.1148 0.00 0.08 0.00 -0.09
34 5.0055 0.00 -0.15 0.00 0.10
35 5.0055 0.00 -0.09 0.00 0.12
36 5.0056 0.00 -0.07 0.00 0.11
37 5.0766 0.00 -0.22 0.00 -0.16
38 5.0766 0.00 -0.05 0.00 -0.15
39 5.0767 0.00 -0.06 0.00 -0.13
40 5.0767 0.00 -0.04 0.00 -0.12
41 5.0767 0.00 0.12 0.00 0.22
42 5.0768 0.00 0.13 0.00 0.03
43 5.0768 0.00 0.15 0.00 -0.26
44 5.0768 0.00 -0.01 0.00 -0.13
45 5.0768 0.00 0.00 0.00 -0.02
46 5.0870 0.00 0.18 0.00 0.10
47 5.0870 0.00 0.06 0.00 0.00
48 5.0871 0.00 -0.06 0.00 0.01
49 5.0871 0.00 -0.03 0.00 0.12
50 5.0874 0.00 0.14 0.00 0.14
51 5.0874 0.00 -0.14 0.00 -0.05
52 5.0874 0.00 -0.13 0.00 0.04
53 5.0874 0.00 -0.11 0.00 0.15
54 5.0875 0.00 -0.10 0.00 0.04
55 5.0875 0.00 -0.08 0.00 0.15
56 5.0875 0.00 -0.07 0.00 -0.06
57 5.0875 0.00 -0.05 0.00 0.05
58 5.0985 0.00 0.04 0.00 -0.09
59 5.0985 0.00 0.06 0.00 0.00
60 5.0986 0.00 0.09 0.00 0.16
61 5.0986 0.00 0.11 0.00 -0.24
62 5.0986 0.00 0.00 0.00 0.01
63 5.0987 0.00 0.15 0.00 -0.03
64 5.0987 0.00 0.02 0.00 0.06
65 5.1011 0.00 0.38 0.00 0.02
66 5.1011 0.00 0.13 0.00 0.20
67 5.1013 0.00 0.15 0.00 0.03
68 5.1014 0.00 0.03 0.00 0.00
69 5.1015 0.00 -0.17 0.00 0.02
70 5.1015 0.00 0.01 0.00 -0.21
71 5.1015 0.00 -0.12 0.00 -0.02
72 5.1034 0.00 0.15 0.00 -0.04
73 5.1034 0.00 -0.13 0.00 0.05
74 5.1034 0.00 0.01 0.00 0.10
75 5.1035 0.00 0.33 0.00 -0.27
76 5.1035 0.00 -0.10 0.00 -0.07
77 5.1035 0.00 0.04 0.00 0.17
78 5.1716 0.00 -0.15 0.00 -0.08
79 5.1716 0.00 -0.03 0.00 -0.06
80 5.1717 0.00 -0.07 0.00 -0.45
81 5.1717 0.00 -0.13 0.00 0.00
82 5.1717 0.00 0.00 0.00 0.09
83 5.1718 0.00 0.28 0.00 -0.39
84 5.1718 0.00 0.10 0.00 0.14
85 5.1718 0.00 0.23 0.00 0.23
86 5.1718 0.00 0.03 0.00 -0.13
87 5.1719 0.00 -0.16 0.00 -0.20
88 5.1719 0.00 -0.04 0.00 0.02
89 5.1720 0.00 0.08 0.00 0.13
90 5.1720 0.00 0.03 0.00 0.18
91 5.1721 0.00 0.02 0.00 -0.14
92 5.1721 0.00 -0.00 0.00 0.09
93 5.1721 0.00 -0.03 0.00 -0.09
94 5.1721 0.00 0.11 0.00 -0.00
95 5.1723 0.00 -0.05 0.00 -0.37
96 5.1723 0.00 0.22 0.00 -0.35
97 5.1748 0.00 -0.11 0.00 0.15
98 5.1750 0.00 -0.04 0.00 0.02
99 5.1750 0.00 -0.02 0.00 0.10
100 5.1774 0.00 0.05 0.00 -0.07
101 5.1775 0.00 0.02 0.00 -0.05
102 5.1775 0.00 -0.07 0.00 0.06
103 5.1776 0.00 -0.13 0.00 0.02
104 5.1913 0.00 -0.06 0.00 0.43
105 5.1914 0.00 -0.12 0.00 0.43
106 5.1914 0.00 -0.20 0.00 0.14
107 5.1914 0.00 0.05 0.00 0.14
108 5.1915 0.00 -0.15 0.00 0.14
109 5.1915 0.00 -0.18 0.00 0.14
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.
16SY55 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.666 39.666 39.666 ecceobj 0.184 0.184 0.184 incobj 17.274 17.274 17.274 qmin 31.811 31.779 31.805 qmax 47.791 47.807 47.821 amean 39.456 39.456 39.456 amin 38.967 38.974 38.968 amax 40.019 40.019 40.025 emean 0.177 0.178 0.177 emin 0.161 0.159 0.159 emax 0.195 0.196 0.196 imean 15.757 15.744 15.753 imin 15.268 15.269 15.267 imax 16.255 16.256 16.257 excite_mean 0.324 0.324 0.324 fracstop 1.000 1.000 1.000 cjmean 2.932 2.932 2.932 libcent 0 180.0 180.3 179.8 libamp 0 114.4 114.1 114.5 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 185.6 185.6 185.8 kozaiamp 180.0 180.0 180.0