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: 16684 # Created Sat Apr 20 01:07:01 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 95 observations of 95 # Arc: 26.16y # First observation: 1994/05/11 # Last observation: 2020/07/09 # Chi-squared of fit: 463.73 DOF: 184 RMS: 0.39 # Min/Max residuals: -1.40 0.99 # Exact a, adot, b, bdot, g, gdot: 2.031105E-05 2.281888E-02 7.476343E-07 -1.491921E-03 2.368347E-02 -1.236218E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -0.249249 -151.128474 -0.375992 -0.004035 -0.931628 2449484.439587 # Heliocentric elements and errors Epoch: 2449484.5000 = 1994/05/12 Mean Anomaly: 302.84702 +/- 0.000 Argument of Peri: 246.22138 +/- 0.000 Long of Asc Node: 25.64689 +/- 0.000 Inclination: 3.73952 +/- 0.000 Eccentricity: 0.05341762 +/- 0.0000 Semi-Major Axis: 44.35236711 +/- 0.0000 Time of Perihelion: 2466612.6323 +/- 0.0 Perihelion: 41.98316937 +/- 0.0000 Aphelion: 46.72156486 +/- 0.0000 Period (y) 295.3816 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.60936001 +/- 0.0000 Ecliptic Y -21.17394019 +/- 0.0000 Ecliptic Z -0.18363690 +/- 0.0000 Ecliptic XDOT 0.00140499 +/- 0.0000 Ecliptic YDOT -0.00224427 +/- 0.0000 Ecliptic ZDOT -0.00017198 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.16058385 +/- 0.0000 Geocenter to KBO 42.22362078 +/- 0.0000 # Hcoef: 6.74
The following table shows the complete astrometric record for 16684. 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 (16684) followed by the observatory code and reference code for the source of the astrometry.
1994 05 11.93889 13 46 58.52 -11 18 22.9 22.9R 16684 950 A23646 1994 05 13.98194 13 46 50.20 -11 17 38.1 24. V 16684 950 A23646 1994 05 14.89514 13 46 46.58 -11 17 18.3 16684 950 A23646 1994 05 15.97639 13 46 42.24 -11 16 55.1 16684 950 A23646 1994 05 16.98958 13 46 38.29 -11 16 32.2 16684 950 A23646 1994 06 03.93333 13 45 36.04 -11 10 57.0 16684 950 23646 1995 02 25.5758 13 56 50.00 -12 16 50.6 22.0R 16684 568 A24813 1995 02 25.5852 13 56 49.98 -12 16 50.7 16684 568 A24813 1995 02 26.41493 13 56 48.04 -12 16 41.6 16684 675 C25125 1995 02 26.53646 13 56 47.78 -12 16 40.0 16684 675 C25125 1995 02 26.5526 13 56 47.77 -12 16 40.4 16684 568 A24813 1995 04 01.1229 13 54 53.68 -12 06 59.5 16684 950 C25182 1995 04 01.1764 13 54 53.45 -12 06 58.1 23.2R 16684 950 C25029 1995 04 07.21883 13 54 27.36 -12 04 43.0 23. R 16684 809 C25179 1995 04 07.31584 13 54 26.93 -12 04 40.8 16684 809 C25179 1995 04 07.32868 13 54 26.87 -12 04 40.6 16684 809 C25179 1995 04 07.34153 13 54 26.81 -12 04 40.3 16684 809 C25179 1997 04 07.05448 14 04 18.67 -13 08 40.4 16684 950 C30062 1997 04 07.09899 14 04 18.50 -13 08 39.6 16684 950 C30062 1997 04 07.15582 14 04 18.23 -13 08 38.4 16684 950 C30062 1997 04 08.06231 14 04 14.23 -13 08 18.0 16684 950 C30062 1997 04 08.10719 14 04 14.02 -13 08 17.3 16684 950 C30062 1997 04 08.16403 14 04 13.79 -13 08 16.2 16684 950 C30062 1997 05 31.24160 14 00 26.30 -12 48 45.4 23.5R 16684 696 C30018 1997 05 31.30419 14 00 26.04 -12 48 43.7 16684 696 C30018 1997 06 01.31049 14 00 22.71 -12 48 25.4 16684 696 C30018 1998 06 23.17463 14 04 18.93 -13 14 56.3 22.1R 16684 705 Ca1682 1998 06 23.19876 14 04 18.88 -13 14 56.1 22.3R 16684 705 Ca1682 1998 06 23.20485 14 04 18.86 -13 14 56.1 22.5R 16684 705 Ca1682 1998 06 23.20763 14 04 18.93 -13 14 55.4 23.0R 16684 705 Ca1682 1998 06 23.23968 14 04 18.77 -13 14 55.8 22.7R 16684 705 Ca1682 1998 06 23.24598 14 04 18.75 -13 14 55.8 23.1R 16684 705 Ca1682 1998 06 23.24877 14 04 18.85 -13 14 55.1 16684 705 Ca1682 1998 06 24.18208 14 04 17.05 -13 14 45.7 16684 705 Ca1682 1998 06 24.20626 14 04 16.97 -13 14 45.4 16684 705 Ca1682 1998 06 24.23200 14 04 16.92 -13 14 44.9 16684 705 Ca1682 1998 06 24.25579 14 04 16.88 -13 14 44.8 16684 705 Ca1682 1999 03 12.22387 14 15 55.88 -14 19 12.1 16684 829 Cb7359 1999 03 12.29363 14 15 55.69 -14 19 10.2 16684 829 Cb7359 1999 03 12.35495 14 15 55.48 -14 19 09.8 16684 829 Cb7359 1999 05 21.31166 14 11 00.94 -13 55 15.2 23.0R 16684 697 Cb0711 1999 05 21.35213 14 11 00.78 -13 55 14.2 23.4R 16684 697 Cb0711 1999 05 23.29515 14 10 52.87 -13 54 34.5 23.4R 16684 697 Cb0711 2000 06 28.95131 14 13 59.87 -14 16 04.3 16684 950 Cb6356 2000 06 28.97688 14 13 59.81 -14 16 04.5 16684 950 Cb6356 2000 06 29.00241 14 13 59.75 -14 16 04.2 16684 950 Cb6356 2001 05 21.40836 14 21 01.87 -14 56 52.7 16684 568 Cd2683 2001 05 21.42471 14 21 01.80 -14 56 52.4 16684 568 Cd2683 2001 05 23.02756 14 20 55.14 -14 56 19.8 22.8R 16684 807 Cd2040 2001 05 23.11971 14 20 54.75 -14 56 18.1 16684 807 Cd2040 2012 05 19.391199 15 19 17.577 -20 08 38.50 22.4G 16684 F51 C~41HW 2013 06 01.369405 15 23 46.483 -20 30 06.91 22.6G 16684 F51 C~41HW 2013 06 01.384225 15 23 46.430 -20 30 06.51 22.9G 16684 F51 C~41HW 2013 06 01.399037 15 23 46.347 -20 30 06.39 23.2G 16684 F51 C~41HW 2013 06 01.413848 15 23 46.256 -20 30 05.72 21.2G 16684 F51 C~41HW 2014 05 08.471660 15 31 16.835 -21 01 20.94 22.4G 16684 F51 C~41HW 2014 05 08.483760 15 31 16.769 -21 01 20.92 22.6G 16684 F51 C~41HW 2014 05 08.495877 15 31 16.718 -21 01 20.74 23.4G 16684 F51 C~41HW 2014 05 08.507982 15 31 16.648 -21 01 20.42 22.7G 16684 F51 C~41HW 2014 05 20.383681 15 30 17.942 -20 58 07.04 22.1G 16684 F51 C~41HW 2014 05 20.394994 15 30 17.863 -20 58 06.75 22.7G 16684 F51 C~41HW 2014 05 20.406286 15 30 17.798 -20 58 06.63 22.7G 16684 F51 C~41HW 2014 05 20.417574 15 30 17.751 -20 58 06.33 22.4G 16684 F51 C~41HW 2015 05 25.410942 15 35 29.542 -21 20 43.11 22.6G 16684 F51 C~41HW 2015 07 19.281754 15 32 03.443 -21 08 15.10 23.1G 16684 F51 C~41HW 2016 03 07.626133 15 45 54.303 -21 56 12.26 23.0G 16684 F51 C~41HW 2016 03 07.644404 15 45 54.307 -21 56 12.28 22.4G 16684 F51 C~41HW 2017 03 27.632857 15 50 56.605 -22 17 20.89 22.7G 16684 F51 C~41HW 2019 05 27.431699 15 58 06.176 -22 49 21.77 22.6G 16684 F51 C~41HW 2019 05 27.443608 15 58 06.093 -22 49 21.98 23.2G 16684 F51 C~41HW 2019 05 27.455524 15 58 06.037 -22 49 21.75 23.0G 16684 F51 C~41HW 2019 05 27.467428 15 58 05.987 -22 49 21.73 23.6G 16684 F51 C~41HW 2019 05 29.408110 15 57 56.196 -22 48 54.47 22.6G 16684 F51 C~41HW 2019 05 29.419219 15 57 56.154 -22 48 54.19 22.2G 16684 F51 C~41HW 2019 05 29.441345 15 57 56.032 -22 48 53.83 22.2G 16684 F51 C~41HW 2019 06 01.373864 15 57 41.315 -22 48 13.10 22.9G 16684 F51 C~41HW 2019 06 01.385035 15 57 41.251 -22 48 12.82 23.0G 16684 F51 C~41HW 2019 06 01.396228 15 57 41.202 -22 48 12.61 22.8G 16684 F51 C~41HW 2019 06 01.407394 15 57 41.140 -22 48 12.39 22.4G 16684 F51 C~41HW 2019 06 03.359276 15 57 31.428 -22 47 45.00 22.7G 16684 F51 C~41HW 2019 06 03.370277 15 57 31.348 -22 47 44.87 22.6G 16684 F51 C~41HW 2019 06 03.381261 15 57 31.294 -22 47 44.61 23.1G 16684 F51 C~41HW 2019 06 03.392221 15 57 31.256 -22 47 44.84 23.0G 16684 F51 C~41HW 2019 06 06.310510 15 57 16.850 -22 47 03.41 22.8G 16684 G37 C~37Pp 2019 06 06.346730 15 57 16.663 -22 47 03.12 16684 G37 C~37Pp 2019 06 10.347608 15 56 57.328 -22 46 06.78 21.9G 16684 F51 C~41HW 2019 06 21.329650 15 56 07.127 -22 43 35.85 23.2G 16684 F51 C~41HW 2019 06 21.352046 15 56 07.045 -22 43 35.54 22.6G 16684 F51 C~41HW 2019 06 22.342202 15 56 02.785 -22 43 21.96 22.3G 16684 F51 C~41HW 2019 07 01.350220 15 55 26.489 -22 41 26.86 22.7G 16684 F51 C~41HW 2019 07 01.362137 15 55 26.432 -22 41 26.34 23.0G 16684 F51 C~41HW 2019 07 01.374019 15 55 26.400 -22 41 26.27 22.7G 16684 F51 C~41HW 2019 07 01.385913 15 55 26.368 -22 41 26.12 22.8G 16684 F51 C~41HW 2019 07 29.300020 15 54 10.733 -22 36 52.07 23.4G 16684 F51 C~41HW 2020 07 09.337512 16 00 40.215 -23 00 31.64 23.2G 16684 F51 C~41HW
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 -1.13 0.00 0.04
2 0.0056 0.00 -0.80 0.00 -0.23
3 0.0081 0.00 -0.06 0.00 -0.31
4 0.0111 0.00 -0.44 0.00 -0.40
5 0.0138 0.00 0.22 0.00 0.90
6 0.0630 0.00 -0.31 0.00 -0.40
7 0.7930 0.00 0.74 0.00 0.57
8 0.7930 0.00 0.77 0.00 0.37
9 0.7953 0.00 -0.03 0.00 0.31
10 0.7956 0.00 0.43 0.00 0.54
11 0.7957 0.00 0.74 0.00 -0.08
12 0.8876 0.00 0.46 0.00 0.18
13 0.8877 0.00 0.46 0.00 0.40
14 0.9043 0.00 -0.02 0.00 -0.68
15 0.9045 0.00 0.03 0.00 -0.71
16 0.9046 0.00 -0.01 0.00 -0.81
17 0.9046 0.00 -0.05 0.00 -0.80
18 2.9052 0.00 0.20 0.00 0.37
19 2.9053 0.00 0.62 0.00 0.19
20 2.9055 0.00 0.37 0.00 0.13
21 2.9079 0.00 -0.05 0.00 0.49
22 2.9081 0.00 -0.19 0.00 0.19
23 2.9082 0.00 0.18 0.00 0.03
24 3.0535 0.00 0.09 0.00 -0.84
25 3.0537 0.00 -0.52 0.00 -0.27
26 3.0565 0.00 0.99 0.00 0.06
27 4.1156 0.00 -0.51 0.00 -0.14
28 4.1157 0.00 -0.51 0.00 -0.19
29 4.1157 0.00 -0.62 0.00 -0.25
30 4.1157 0.00 0.51 0.00 0.42
31 4.1158 0.00 -0.90 0.00 -0.32
32 4.1158 0.00 -1.01 0.00 -0.39
33 4.1158 0.00 0.58 0.00 0.28
34 4.1184 0.00 0.90 0.00 0.14
35 4.1185 0.00 0.42 0.00 0.19
36 4.1185 0.00 0.43 0.00 0.43
37 4.1186 0.00 0.53 0.00 0.29
38 4.8331 0.00 -1.40 0.00 -0.77
39 4.8333 0.00 -1.04 0.00 0.19
40 4.8334 0.00 -1.36 0.00 -0.24
41 5.0250 0.00 0.20 0.00 0.07
42 5.0251 0.00 0.34 0.00 0.22
43 5.0304 0.00 0.14 0.00 -0.05
44 6.1328 0.00 0.53 0.00 0.34
45 6.1329 0.00 0.32 0.00 -0.10
46 6.1330 0.00 0.10 0.00 -0.03
47 7.0266 0.00 -0.63 0.00 0.60
48 7.0267 0.00 -0.62 0.00 0.56
49 7.0310 0.00 0.14 0.00 0.11
50 7.0313 0.00 0.14 0.00 -0.06
51 18.0218 0.00 0.18 0.00 -0.06
52 19.0566 0.00 -0.00 0.00 -0.18
53 19.0567 0.00 0.26 0.00 -0.03
54 19.0567 0.00 0.07 0.00 -0.16
55 19.0567 0.00 -0.25 0.00 0.26
56 19.9905 0.00 0.11 0.00 -0.03
57 19.9905 0.00 0.03 0.00 -0.20
58 19.9906 0.00 0.17 0.00 -0.21
59 19.9906 0.00 0.03 0.00 -0.08
60 20.0231 0.00 0.60 0.00 -0.17
61 20.0232 0.00 0.27 0.00 -0.07
62 20.0232 0.00 0.14 0.00 -0.14
63 20.0232 0.00 0.29 0.00 -0.02
64 21.0362 0.00 0.15 0.00 -0.01
65 21.1864 0.00 -0.37 0.00 0.15
66 21.8226 0.00 0.08 0.00 0.05
67 21.8226 0.00 0.41 0.00 0.05
68 22.8766 0.00 0.20 0.00 -0.13
69 25.0417 0.00 -0.06 0.00 0.22
70 25.0418 0.00 -0.39 0.00 -0.16
71 25.0418 0.00 -0.31 0.00 -0.09
72 25.0418 0.00 -0.14 0.00 -0.24
73 25.0471 0.00 -0.09 0.00 0.04
74 25.0472 0.00 0.13 0.00 0.16
75 25.0472 0.00 0.01 0.00 0.21
76 25.0553 0.00 0.05 0.00 -0.11
77 25.0553 0.00 -0.06 0.00 0.02
78 25.0553 0.00 0.06 0.00 0.07
79 25.0554 0.00 -0.02 0.00 0.13
80 25.0607 0.00 0.12 0.00 0.08
81 25.0607 0.00 -0.24 0.00 0.06
82 25.0608 0.00 -0.22 0.00 0.16
83 25.0608 0.00 0.04 0.00 -0.22
84 25.0688 0.00 -0.12 0.00 0.14
85 25.0689 0.00 -0.22 0.00 -0.09
86 25.0798 0.00 0.06 0.00 -0.00
87 25.1099 0.00 -0.34 0.00 -0.06
88 25.1100 0.00 -0.09 0.00 -0.05
89 25.1127 0.00 -0.09 0.00 0.31
90 25.1373 0.00 -0.11 0.00 -0.24
91 25.1374 0.00 -0.27 0.00 0.14
92 25.1374 0.00 -0.07 0.00 0.06
93 25.1374 0.00 0.14 0.00 0.06
94 25.2139 0.00 0.00 0.00 -0.17
95 26.1613 0.00 0.49 0.00 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.
16684 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.803 43.803 43.803 ecceobj 0.047 0.047 0.047 incobj 3.755 3.755 3.755 qmin 41.392 41.390 41.383 qmax 47.080 47.099 47.061 amean 44.132 44.132 44.132 amin 43.788 43.787 43.789 amax 44.487 44.488 44.487 emean 0.044 0.044 0.044 emin 0.028 0.028 0.028 emax 0.058 0.059 0.058 imean 3.391 3.391 3.391 imin 2.721 2.721 2.721 imax 3.934 3.934 3.934 excite_mean 0.074 0.074 0.074 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 184.3 184.3 184.5 kozaiamp 180.0 180.0 180.0