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: 649172 # Created Wed Jul 17 01:07:49 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 110 observations of 110 # Arc: 22.40y # First observation: 1998/09/22 # Last observation: 2021/02/15 # Chi-squared of fit: 112.04 DOF: 214 RMS: 0.18 # Min/Max residuals: -0.90 0.73 # Exact a, adot, b, bdot, g, gdot: 2.079527E-05 3.780936E-02 -9.742510E-07 -1.823466E-03 2.951215E-02 3.980208E-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 -17.801610 48.346184 0.751676 -0.199687 -0.621154 2451078.930944 # Heliocentric elements and errors Epoch: 2451078.5000 = 1998/09/22 Mean Anomaly: 4.94596 +/- 0.000 Argument of Peri: 244.86942 +/- 0.000 Long of Asc Node: 147.41466 +/- 0.000 Inclination: 17.73665 +/- 0.000 Eccentricity: 0.46584294 +/- 0.0000 Semi-Major Axis: 63.90221333 +/- 0.0000 Time of Perihelion: 2448515.0766 +/- 0.0 Perihelion: 34.13381848 +/- 0.0000 Aphelion: 93.67060818 +/- 0.0000 Period (y) 510.8367 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.44537727 +/- 0.0000 Ecliptic Y 24.09249358 +/- 0.0000 Ecliptic Z -10.35921704 +/- 0.0000 Ecliptic XDOT -0.00242141 +/- 0.0000 Ecliptic YDOT 0.00256436 +/- 0.0000 Ecliptic ZDOT -0.00027399 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.51887281 +/- 0.0000 Geocenter to KBO 33.88430141 +/- 0.0000 # Hcoef: 6.66
The following table shows the complete astrometric record for 649172. 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 (649172) followed by the observatory code and reference code for the source of the astrometry.
1998 09 22.430213 03 22 58.17 +00 08 32.4 21.9V 649172 645 C~2POP 1998 09 22.431042 03 22 58.17 +00 08 32.3 21.6V 649172 645 C~2POP 1998 09 22.433529 03 22 58.17 +00 08 32.3 22.7V 649172 645 C~2POP 1998 09 25.421982 03 22 49.79 +00 06 42.5 22.0V 649172 645 C~2POP 1998 09 25.422811 03 22 49.79 +00 06 42.7 21.5V 649172 645 C~2POP 1998 09 25.425297 03 22 49.79 +00 06 42.5 22.5V 649172 645 C~2POP 1998 10 29.327359 03 20 26.61 -00 12 37.5 21.5V 649172 645 C~2POP 1998 10 29.328188 03 20 26.61 -00 12 37.6 21.3V 649172 645 C~2POP 1998 10 29.330676 03 20 26.61 -00 12 37.6 22.6V 649172 645 C~2POP 1998 11 15.280013 03 18 55.47 -00 19 43.6 21.6V 649172 645 C~2POP 1998 11 15.280842 03 18 55.46 -00 19 43.8 21.2V 649172 645 C~2POP 1998 11 15.283329 03 18 55.45 -00 19 43.7 22.6V 649172 645 C~2POP 1998 11 19.268946 03 18 33.69 -00 21 00.6 21.8V 649172 645 C~2POP 1998 11 19.269776 03 18 33.68 -00 21 00.7 21.7V 649172 645 C~2POP 1998 11 19.272263 03 18 33.66 -00 21 00.6 22.8V 649172 645 C~2POP 2000 11 18.258179 03 35 38.35 +00 36 13.7 21.8V 649172 645 C~2POP 2000 11 18.259009 03 35 38.32 +00 36 13.8 21.7V 649172 645 C~2POP 2000 11 18.264196 03 35 38.31 +00 36 13.7 22.6V 649172 645 C~2POP 2000 11 27.245220 03 34 49.32 +00 33 52.2 21.7V 649172 645 C~2POP 2000 11 27.246049 03 34 49.31 +00 33 52.2 21.3V 649172 645 C~2POP 2000 11 27.248537 03 34 49.31 +00 33 52.2 22.4V 649172 645 C~2POP 2001 11 11.367739 03 44 42.44 +01 06 42.6 21.7V 649172 645 C~2POP 2001 11 11.368568 03 44 42.43 +01 06 42.5 21.4V 649172 645 C~2POP 2001 11 11.371056 03 44 42.43 +01 06 42.3 22.4V 649172 645 C~2POP 2001 11 21.323626 03 43 48.03 +01 03 26.6 21.7V 649172 645 C~2POP 2001 11 21.324455 03 43 48.02 +01 03 26.6 21.1V 649172 645 C~2POP 2001 11 21.326943 03 43 48.01 +01 03 26.4 22.4V 649172 645 C~2POP 2002 01 09.151773 03 40 04.57 +01 03 01.5 22.3V 649172 645 C~2POP 2002 01 09.152602 03 40 04.57 +01 03 01.8 21.9V 649172 645 C~2POP 2002 01 09.155090 03 40 04.58 +01 03 01.4 23.7V 649172 645 C~2POP 2002 01 13.164572 03 39 53.74 +01 04 12.3 21.9V 649172 645 C~2POP 2002 01 13.165401 03 39 53.74 +01 04 12.2 21.6V 649172 645 C~2POP 2002 01 13.167889 03 39 53.74 +01 04 12.3 23.5V 649172 645 C~2POP 2010 11 17.54394 04 56 00.209 +04 54 45.61 21.6i 649172 F51 C~1w3m 2010 12 04.50962 04 54 30.826 +04 51 16.39 22.8w 649172 F51 C~1w3m 2010 12 05.41761 04 54 25.840 +04 51 08.40 22.3w 649172 F51 C~1w3m 2010 12 05.43251 04 54 25.787 +04 51 08.38 22.4w 649172 F51 C~1w3m 2010 12 05.44713 04 54 25.708 +04 51 08.42 22.5w 649172 F51 C~1w3m 2010 12 05.46171 04 54 25.623 +04 51 08.37 22.2w 649172 F51 C~1w3m 2011 10 23.45308 05 05 16.709 +05 25 54.57 22.4w 649172 F51 C~1w3m 2011 10 23.46795 05 05 16.679 +05 25 54.02 22.6w 649172 F51 C~1w3m 2011 10 23.48284 05 05 16.621 +05 25 53.77 22.5w 649172 F51 C~1w3m 2011 10 23.49778 05 05 16.579 +05 25 53.23 22.5w 649172 F51 C~1w3m 2011 12 01.34532 05 02 20.954 +05 14 28.53 22.9w 649172 F51 C~1w3m 2011 12 01.35919 05 02 20.881 +05 14 28.34 23.0w 649172 F51 C~1w3m 2011 12 01.37307 05 02 20.808 +05 14 28.22 22.6w 649172 F51 C~1w3m 2011 12 01.38684 05 02 20.717 +05 14 28.02 22.4w 649172 F51 C~1w3m 2011 12 16.39839 05 00 59.889 +05 13 02.49 22.2r 649172 F51 C~1w3m 2011 12 17.30965 05 00 54.953 +05 13 00.60 23.5G 649172 F51 C~2rXq 2012 02 10.28038 04 57 22.841 +05 24 56.04 22.1G 649172 F51 C~2rXq 2012 02 15.21392 04 57 16.314 +05 27 05.71 22.0G 649172 F51 C~2rXq 2012 12 07.48507 05 09 09.910 +05 35 34.96 22.5G 649172 F51 C~2rXq 2012 12 22.37009 05 07 50.377 +05 35 04.93 21.6i 649172 F51 C~1w3m 2013 01 08.29239 05 06 27.567 +05 36 52.46 22.3w 649172 F51 C~1w3m 2013 01 08.30620 05 06 27.528 +05 36 52.73 22.1w 649172 F51 C~1w3m 2013 01 08.32002 05 06 27.461 +05 36 53.17 22.1w 649172 F51 C~1w3m 2013 01 08.33396 05 06 27.392 +05 36 52.86 22.1w 649172 F51 C~1w3m 2013 01 27.33280 05 05 15.267 +05 41 45.89 21.3i 649172 F51 C~1w3m 2013 12 11.39704 05 16 10.073 +05 56 34.29 22.3G 649172 F51 C~2rXq 2013 12 29.40197 05 14 35.454 +05 56 48.57 22.1G 649172 F51 C~2rXq 2014 02 28.25231 05 11 40.759 +06 16 02.61 22.3w 649172 F51 C~1w3m 2014 02 28.26447 05 11 40.748 +06 16 02.67 22.3w 649172 F51 C~1w3m 2014 02 28.28872 05 11 40.749 +06 16 03.23 22.2w 649172 F51 C~1w3m 2014 11 04.57584 05 26 20.941 +06 24 19.28 21.2G 649172 F51 C~2rXq 2014 12 16.41738 05 22 58.060 +06 16 55.89 22.9G 649172 F51 C~2rXq 2014 12 16.42868 05 22 57.999 +06 16 56.14 22.9G 649172 F51 C~2rXq 2014 12 16.43990 05 22 57.923 +06 16 55.83 22.2G 649172 F51 C~2rXq 2015 01 15.37446 05 20 30.277 +06 20 03.72 22.9G 649172 F51 C~2rXq 2015 01 15.38683 05 20 30.213 +06 20 03.96 22.5G 649172 F51 C~2rXq 2015 01 15.39921 05 20 30.165 +06 20 04.04 22.5G 649172 F51 C~2rXq 2015 01 15.41159 05 20 30.110 +06 20 04.30 22.6G 649172 F51 C~2rXq 2015 01 17.35318 05 20 22.010 +06 20 31.42 22.5G 649172 F51 C~2rXq 2015 01 17.36715 05 20 21.948 +06 20 31.71 22.2G 649172 F51 C~2rXq 2015 01 17.38097 05 20 21.901 +06 20 31.79 22.2G 649172 F51 C~2rXq 2015 01 17.39481 05 20 21.839 +06 20 31.92 22.0G 649172 F51 C~2rXq 2015 11 17.47656 05 32 32.381 +06 40 28.29 22.1G 649172 F51 C~2rXq 2015 12 04.41028 05 31 09.555 +06 37 33.45 22.7G 649172 F51 C~2rXq 2015 12 05.40771 05 31 04.345 +06 37 27.00 22.2G 649172 F51 C~2rXq 2015 12 05.42012 05 31 04.287 +06 37 26.89 22.7G 649172 F51 C~2rXq 2015 12 05.43254 05 31 04.217 +06 37 26.75 22.1G 649172 F51 C~2rXq 2015 12 05.44506 05 31 04.151 +06 37 26.82 22.6G 649172 F51 C~2rXq 2016 01 11.40553 05 27 54.773 +06 39 01.91 22.5G 649172 F51 C~2rXq 2016 01 11.41739 05 27 54.714 +06 39 02.07 22.4G 649172 F51 C~2rXq 2016 01 11.42925 05 27 54.662 +06 39 02.11 22.6G 649172 F51 C~2rXq 2016 01 11.44106 05 27 54.633 +06 39 02.26 22.8G 649172 F51 C~2rXq 2016 01 25.38214 05 26 57.125 +06 42 24.75 22.3G 649172 F51 C~2rXq 2016 02 06.33526 05 26 19.615 +06 46 20.40 22.6G 649172 F51 C~2rXq 2016 02 06.34605 05 26 19.588 +06 46 20.54 22.7G 649172 F51 C~2rXq 2016 02 06.35687 05 26 19.562 +06 46 20.83 23.0G 649172 F51 C~2rXq 2016 02 06.36767 05 26 19.543 +06 46 21.20 21.8G 649172 F51 C~2rXq 2016 02 26.24734 05 25 47.155 +06 54 32.35 23.4G 649172 F51 C~2rXq 2016 02 26.26009 05 25 47.172 +06 54 32.46 23.1G 649172 F51 C~2rXq 2016 03 05.28007 05 25 45.743 +06 58 14.88 22.6G 649172 F51 C~2rXq 2016 10 13.59541 05 41 16.596 +07 09 42.89 22.8G 649172 F51 C~2rXq 2016 10 13.60754 05 41 16.563 +07 09 42.50 22.8G 649172 F51 C~2rXq 2016 10 13.61966 05 41 16.555 +07 09 42.22 22.2G 649172 F51 C~2rXq 2016 10 13.63184 05 41 16.526 +07 09 42.13 22.3G 649172 F51 C~2rXq 2017 01 03.35445 05 35 29.328 +06 57 00.16 22.6G 649172 F51 C~2rXq 2017 01 03.36718 05 35 29.261 +06 56 59.96 22.6G 649172 F51 C~2rXq 2017 01 03.37997 05 35 29.196 +06 57 00.35 22.8G 649172 F51 C~2rXq 2017 01 20.39755 05 34 11.965 +07 00 21.02 23.1G 649172 F51 C~2rXq 2017 01 20.42114 05 34 11.857 +07 00 21.64 22.2G 649172 F51 C~2rXq 2017 01 20.43292 05 34 11.808 +07 00 21.79 22.9G 649172 F51 C~2rXq 2017 12 25.42432 05 43 09.440 +07 14 33.37 22.2G 649172 F51 C~2rXq 2017 12 25.43642 05 43 09.371 +07 14 33.35 22.2G 649172 F51 C~2rXq 2017 12 25.44857 05 43 09.309 +07 14 33.47 22.4G 649172 F51 C~2rXq 2017 12 25.46079 05 43 09.247 +07 14 33.42 22.1G 649172 F51 C~2rXq 2018 01 03.47925 05 42 23.197 +07 15 26.54 22.0G 649172 F51 C~2rXq 2021 02 15.222570 05 59 34.430 +08 18 14.98 23.0G 649172 G37 C~4Z2f 2021 02 15.275630 05 59 34.286 +08 18 16.15 649172 G37 C~4Z2f
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 -0.11 0.00 -0.03
2 0.0000 0.00 -0.07 0.00 -0.10
3 0.0000 0.00 0.03 0.00 -0.01
4 0.0082 0.00 0.03 0.00 -0.16
5 0.0082 0.00 0.07 0.00 0.07
6 0.0082 0.00 0.18 0.00 -0.04
7 0.1010 0.00 -0.16 0.00 0.01
8 0.1010 0.00 -0.10 0.00 -0.07
9 0.1010 0.00 0.10 0.00 0.00
10 0.1474 0.00 -0.02 0.00 0.08
11 0.1474 0.00 -0.10 0.00 -0.11
12 0.1474 0.00 -0.04 0.00 0.05
13 0.1584 0.00 0.06 0.00 0.04
14 0.1584 0.00 -0.02 0.00 -0.05
15 0.1584 0.00 -0.11 0.00 0.10
16 2.1570 0.00 0.15 0.00 -0.12
17 2.1570 0.00 -0.23 0.00 -0.01
18 2.1570 0.00 0.05 0.00 -0.01
19 2.1816 0.00 -0.09 0.00 -0.10
20 2.1816 0.00 -0.17 0.00 -0.09
21 2.1816 0.00 0.03 0.00 -0.06
22 3.1374 0.00 -0.03 0.00 0.13
23 3.1374 0.00 -0.11 0.00 0.05
24 3.1374 0.00 0.10 0.00 -0.10
25 3.1647 0.00 0.10 0.00 -0.01
26 3.1647 0.00 0.02 0.00 0.00
27 3.1647 0.00 0.08 0.00 -0.16
28 3.2983 0.00 -0.17 0.00 0.00
29 3.2984 0.00 -0.13 0.00 0.29
30 3.2984 0.00 0.13 0.00 -0.15
31 3.3093 0.00 0.11 0.00 0.15
32 3.3093 0.00 0.14 0.00 0.04
33 3.3093 0.00 0.24 0.00 0.09
34 12.1536 0.00 0.42 0.00 -0.11
35 12.2001 0.00 0.73 0.00 0.42
36 12.2026 0.00 -0.28 0.00 -0.36
37 12.2026 0.00 0.16 0.00 -0.27
38 12.2026 0.00 0.18 0.00 -0.11
39 12.2027 0.00 0.11 0.00 -0.05
40 13.0843 0.00 -0.35 0.00 0.16
41 13.0843 0.00 -0.06 0.00 -0.04
42 13.0843 0.00 -0.19 0.00 0.06
43 13.0844 0.00 -0.07 0.00 -0.12
44 13.1907 0.00 -0.05 0.00 0.06
45 13.1908 0.00 -0.02 0.00 -0.00
46 13.1908 0.00 0.02 0.00 0.01
47 13.1908 0.00 -0.22 0.00 -0.06
48 13.2319 0.00 0.26 0.00 0.67
49 13.2344 0.00 -0.90 0.00 0.20
50 13.3849 0.00 -0.31 0.00 -0.17
51 13.3984 0.00 -0.46 0.00 -0.47
52 14.2096 0.00 0.24 0.00 0.06
53 14.2503 0.00 -0.26 0.00 0.13
54 14.2967 0.00 -0.39 0.00 0.00
55 14.2967 0.00 -0.03 0.00 0.12
56 14.2968 0.00 -0.09 0.00 0.41
57 14.2968 0.00 -0.16 0.00 -0.05
58 14.3488 0.00 -0.04 0.00 -0.30
59 15.2196 0.00 -0.26 0.00 -0.01
60 15.2689 0.00 0.01 0.00 -0.34
61 15.4355 0.00 0.18 0.00 0.68
62 15.4355 0.00 0.02 0.00 0.39
63 15.4356 0.00 0.05 0.00 0.24
64 16.1181 0.00 0.04 0.00 -0.02
65 16.2327 0.00 0.10 0.00 -0.15
66 16.2327 0.00 0.10 0.00 0.12
67 16.2327 0.00 -0.12 0.00 -0.18
68 16.3147 0.00 0.18 0.00 -0.02
69 16.3147 0.00 0.02 0.00 0.05
70 16.3148 0.00 0.11 0.00 -0.04
71 16.3148 0.00 0.08 0.00 0.06
72 16.3201 0.00 -0.07 0.00 0.03
73 16.3202 0.00 -0.12 0.00 0.11
74 16.3202 0.00 0.05 0.00 -0.00
75 16.3202 0.00 -0.01 0.00 -0.07
76 17.1528 0.00 0.28 0.00 -0.15
77 17.1991 0.00 0.29 0.00 -0.02
78 17.2019 0.00 -0.09 0.00 0.00
79 17.2019 0.00 0.02 0.00 -0.03
80 17.2019 0.00 -0.04 0.00 -0.10
81 17.2020 0.00 -0.03 0.00 0.05
82 17.3031 0.00 0.06 0.00 0.04
83 17.3032 0.00 0.01 0.00 0.06
84 17.3032 0.00 0.05 0.00 -0.03
85 17.3032 0.00 0.44 0.00 -0.01
86 17.3414 0.00 0.02 0.00 0.14
87 17.3741 0.00 -0.05 0.00 0.03
88 17.3742 0.00 -0.01 0.00 -0.06
89 17.3742 0.00 0.03 0.00 -0.01
90 17.3742 0.00 0.18 0.00 0.13
91 17.4287 0.00 -0.20 0.00 0.13
92 17.4287 0.00 0.19 0.00 -0.10
93 17.4507 0.00 0.12 0.00 -0.01
94 18.0593 0.00 0.02 0.00 0.06
95 18.0593 0.00 -0.16 0.00 -0.06
96 18.0594 0.00 0.02 0.00 -0.08
97 18.0594 0.00 -0.10 0.00 0.10
98 18.2832 0.00 0.02 0.00 0.01
99 18.2832 0.00 -0.02 0.00 -0.29
100 18.2832 0.00 -0.03 0.00 0.00
101 18.3298 0.00 0.09 0.00 -0.23
102 18.3299 0.00 -0.07 0.00 0.03
103 18.3299 0.00 -0.07 0.00 0.00
104 19.2580 0.00 0.03 0.00 0.04
105 19.2581 0.00 -0.04 0.00 -0.02
106 19.2581 0.00 -0.00 0.00 0.05
107 19.2581 0.00 0.04 0.00 -0.04
108 19.2828 0.00 0.30 0.00 -0.15
109 22.4005 0.00 -0.04 0.00 -0.15
110 22.4007 0.00 -0.25 0.00 -0.16
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.
649172 quality flag:2 Type: SCATNEAR 3:1EE SCATNEAR axisobj 64.153 64.153 64.153 ecceobj 0.468 0.468 0.468 incobj 17.739 17.739 17.739 qmin 33.412 33.412 32.728 qmax 94.283 94.179 94.729 amean 62.675 62.632 62.645 amin 61.398 61.456 61.444 amax 64.169 64.153 64.171 emean 0.449 0.451 0.456 emin 0.423 0.437 0.437 emax 0.469 0.469 0.479 imean 17.165 16.956 16.544 imin 16.149 16.179 15.257 imax 18.671 17.371 17.446 excite_mean 0.538 0.537 0.537 fracstop 1.000 1.000 1.000 cjmean 2.943 2.943 2.942 libcent 0 -180.0 179.6 -180.0 libamp 0 -180.0 172.5 -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 189.1 189.9 185.5 kozaiamp 180.0 180.0 180.0