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: 518151 # Created Sun Dec 22 02:07:16 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 104 observations of 104 # Arc: 7.97y # First observation: 2015/02/09 # Last observation: 2023/01/28 # Chi-squared of fit: 329.62 DOF: 202 RMS: 0.31 # Min/Max residuals: -1.41 1.42 # Exact a, adot, b, bdot, g, gdot: -6.411304E-06 -4.346788E-02 3.985717E-05 2.844048E-01 1.112866E-01 5.391155E-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 -44.333476 -174.971534 0.694514 -0.486940 -0.498617 2457063.013598 # Heliocentric elements and errors Epoch: 2457062.5000 = 2015/02/09 Mean Anomaly: 2.27116 +/- 0.000 Argument of Peri: 306.50099 +/- 0.000 Long of Asc Node: 176.37247 +/- 0.000 Inclination: 93.50991 +/- 0.000 Eccentricity: 0.61743921 +/- 0.0000 Semi-Major Axis: 24.68338985 +/- 0.0000 Time of Perihelion: 2456779.9144 +/- 0.0 Perihelion: 9.44289709 +/- 0.0000 Aphelion: 39.92388260 +/- 0.0000 Period (y) 122.6353 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -7.16105468 +/- 0.0000 Ecliptic Y 0.06806491 +/- 0.0000 Ecliptic Z -6.27933560 +/- 0.0000 Ecliptic XDOT -0.00506278 +/- 0.0000 Ecliptic YDOT 0.00062286 +/- 0.0000 Ecliptic ZDOT 0.00491216 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 9.52443358 +/- 0.0000 Geocenter to KBO 8.98581521 +/- 0.0000 # Hcoef: 10.15
The following table shows the complete astrometric record for 518151. 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 (518151) followed by the observatory code and reference code for the source of the astrometry.
2015 02 09.51282 10 51 13.887 -41 46 01.96 19.8i 518151 F51 C~2Y4v 2015 02 09.53168 10 51 13.400 -41 45 59.65 19.8i 518151 F51 C~2Y4v 2016 03 01.35174 11 12 42.60 -25 33 44.8 20.7r 518151 G45 C~1va2 2016 03 01.35649 11 12 42.50 -25 33 43.1 20.4r 518151 G45 C~1va2 2016 03 01.36780 11 12 42.25 -25 33 39.9 20.5r 518151 G45 C~1va2 2016 03 01.37276 11 12 42.16 -25 33 38.8 20.4r 518151 G45 C~1va2 2016 03 29.35363 11 02 30.694 -23 12 27.41 19.9r 518151 F51 C~1pSx 2016 03 29.36394 11 02 30.491 -23 12 23.96 19.9r 518151 F51 C~1pSx 2016 03 29.37425 11 02 30.292 -23 12 20.31 19.8r 518151 F51 C~1pSx 2016 03 29.38459 11 02 30.071 -23 12 16.82 19.9r 518151 F51 C~1pSx 2016 03 31.21672 11 01 54.23 -23 01 48.0 20.7V 518151 691 C~1pSx 2016 03 31.22249 11 01 54.07 -23 01 46.2 20.7V 518151 691 C~1pSx 2016 03 31.22827 11 01 53.98 -23 01 43.7 20.9V 518151 691 C~1pSx 2016 03 31.26023 11 01 53.38 -23 01 33.3 20.5R 518151 926 C~1pSx 2016 03 31.27502 11 01 53.08 -23 01 27.7 20.0R 518151 926 C~1pSx 2016 03 31.28888 11 01 52.78 -23 01 22.4 20.2R 518151 926 C~1pSx 2016 03 31.53871 11 01 47.97 -22 59 55.7 518151 Q62 C~1t4A 2016 03 31.54324 11 01 47.89 -22 59 53.6 518151 Q62 C~1t4A 2016 03 31.54776 11 01 47.81 -22 59 51.8 19.4w 518151 Q62 C~1t4A 2016 04 01.18993 11 01 35.52 -22 56 11.1 20.1R 518151 926 C~1qBR 2016 04 01.19047 11 01 35.54 -22 56 10.8 20.4V 518151 I52 C~1pSx 2016 04 01.19632 11 01 35.40 -22 56 09.6 20.2R 518151 926 C~1qBR 2016 04 01.20171 11 01 35.32 -22 56 06.9 20.1V 518151 I52 C~1pSx 2016 04 01.20390 11 01 35.26 -22 56 06.3 20.4R 518151 926 C~1qBR 2016 04 01.21028 11 01 35.10 -22 56 04.0 20.2R 518151 926 C~1qBR 2016 04 01.21294 11 01 34.98 -22 56 01.5 518151 I52 C~1pSx 2016 04 01.21781 11 01 34.97 -22 56 01.4 20.2R 518151 926 C~1qBR 2016 04 01.22420 11 01 34.80 -22 55 57.8 20.5R 518151 926 C~1qBR 2016 04 01.22504 11 01 34.82 -22 55 58.3 20.1V 518151 I52 C~1pSx 2016 04 01.31377 11 01 33.11 -22 55 27.6 20.2V 518151 691 C~1pSx 2016 04 01.32432 11 01 32.96 -22 55 23.8 20.5V 518151 691 C~1pSx 2016 04 01.33487 11 01 32.70 -22 55 20.8 20.7V 518151 691 C~1pSx 2016 04 05.16977 11 00 21.55 -22 32 58.5 20.5r 518151 G45 C~1qnz 2016 04 05.17445 11 00 21.47 -22 32 56.7 20.7r 518151 G45 C~1qnz 2016 04 05.17880 11 00 21.43 -22 32 55.4 20.2r 518151 G45 C~1qnz 2016 04 05.18318 11 00 21.35 -22 32 54.0 20.3r 518151 G45 C~1qnz 2016 04 05.18769 11 00 21.26 -22 32 51.9 20.2r 518151 G45 C~1qnz 2016 04 05.19247 11 00 21.19 -22 32 50.3 19.9r 518151 G45 C~1qnz 2016 04 12.32913 10 58 20.170 -21 50 28.32 20.1r 518151 F51 C~1rRt 2016 04 12.33947 10 58 20.000 -21 50 24.64 20.1r 518151 F51 C~1rRt 2016 04 12.34980 10 58 19.840 -21 50 20.92 20.0r 518151 F51 C~1rRt 2016 04 12.36016 10 58 19.680 -21 50 17.26 20.3r 518151 F51 C~1rRt 2017 01 30.54032 11 43 18.148 -13 09 19.48 20.4w 518151 F51 C~2Fad 2017 01 30.55195 11 43 17.984 -13 09 17.54 20.5w 518151 F51 C~2Fad 2017 01 30.56358 11 43 17.826 -13 09 15.77 20.6w 518151 F51 C~2Fad 2017 01 30.57519 11 43 17.669 -13 09 13.83 20.5w 518151 F51 C~2Fad 2017 02 26.64995 11 35 42.61 -11 36 35.5 19.7R 518151 Q62 C~29Em 2017 02 26.66949 11 35 42.19 -11 36 30.7 518151 Q62 C~29Em 2017 02 27.63840 11 35 23.39 -11 32 31.5 518151 Q62 C~29Em 2017 02 27.66713 11 35 22.80 -11 32 24.2 518151 Q62 C~29Em 2017 03 02.24925 11 34 32.12 -11 21 38.4 20.6r 518151 G45 C~29Em 2017 03 02.25421 11 34 32.07 -11 21 37.3 20.8r 518151 G45 C~29Em 2017 03 02.26386 11 34 31.85 -11 21 34.8 20.3r 518151 G45 C~29Em 2017 03 02.26886 11 34 31.76 -11 21 34.0 20.4r 518151 G45 C~29Em 2017 03 02.27376 11 34 31.65 -11 21 32.6 20.3r 518151 G45 C~29Em 2017 03 19.34532 11 28 49.44 -10 04 39.6 19.9V 518151 G96 C~2B0K 2017 03 19.34956 11 28 49.35 -10 04 38.3 20.3V 518151 G96 C~2B0K 2017 03 19.35380 11 28 49.27 -10 04 37.3 20.5V 518151 G96 C~2B0K 2017 03 19.35803 11 28 49.19 -10 04 36.0 20.1V 518151 G96 C~2B0K 2017 03 25.26059 11 26 53.19 -09 36 25.3 20.1V 518151 691 C~2BoD 2017 03 25.27147 11 26 52.96 -09 36 22.3 20.1V 518151 691 C~2BoD 2017 03 25.28236 11 26 52.75 -09 36 19.0 20.1V 518151 691 C~2BoD 2018 03 10.40287 11 49 54.214 +01 42 22.77 20.4w 518151 F51 C~2Ztg 2018 03 10.41462 11 49 53.997 +01 42 25.68 20.4w 518151 F51 C~2Ztg 2018 03 10.43831 11 49 53.543 +01 42 31.71 20.2w 518151 F51 C~2Ztg 2018 03 13.65995 11 48 53.84 +01 56 04.9 20.6R 518151 D29 C~2Ztg 2018 03 13.67498 11 48 53.61 +01 56 08.6 20.7R 518151 D29 C~2Ztg 2018 03 13.69000 11 48 53.33 +01 56 12.9 20.9R 518151 D29 C~2Ztg 2018 03 19.35594 11 47 07.80 +02 20 03.6 20.2G 518151 G96 C~2aIg 2018 03 19.36207 11 47 07.68 +02 20 04.8 20.2G 518151 G96 C~2aIg 2018 03 19.36722 11 47 07.58 +02 20 06.4 20.3G 518151 G96 C~2aIg 2018 03 19.37238 11 47 07.49 +02 20 07.8 20.0G 518151 G96 C~2aIg 2018 04 11.24098 11 40 23.13 +03 52 40.1 20.4V 518151 691 C~2bHh 2018 04 11.25189 11 40 22.92 +03 52 42.5 20.4V 518151 691 C~2bHh 2018 04 11.26273 11 40 22.74 +03 52 45.0 20.6V 518151 691 C~2bHh 2018 04 13.30816 11 39 50.161 +04 00 29.04 20.5w 518151 F51 C~2bHh 2018 04 13.31951 11 39 49.974 +04 00 31.61 20.5w 518151 F51 C~2bHh 2018 04 13.33091 11 39 49.795 +04 00 34.13 20.5w 518151 F51 C~2bHh 2018 04 13.34232 11 39 49.612 +04 00 36.65 20.6w 518151 F51 C~2bHh 2019 01 15.58690 12 16 20.690 +08 58 42.26 20.9w 518151 F52 C~4fKQ 2019 01 15.59989 12 16 20.630 +08 58 44.81 21.0w 518151 F52 C~4fKQ 2019 01 15.61283 12 16 20.569 +08 58 47.25 20.9w 518151 F52 C~4fKQ 2019 01 15.62582 12 16 20.506 +08 58 49.91 21.0w 518151 F52 C~4fKQ 2019 02 05.49089 12 13 37.058 +10 12 42.40 21.1w 518151 F51 C~2ydd 2019 02 05.50329 12 13 36.919 +10 12 45.05 20.9w 518151 F51 C~2ydd 2019 02 05.51575 12 13 36.782 +10 12 47.89 20.9w 518151 F51 C~2ydd 2019 02 05.52826 12 13 36.633 +10 12 50.81 20.9w 518151 F51 C~2ydd 2019 02 26.51503 12 08 51.75 +11 35 39.6 21.3G 518151 G96 C~30L8 2019 02 26.52212 12 08 51.60 +11 35 41.9 20.8G 518151 G96 C~30L8 2019 02 26.53371 12 08 51.48 +11 35 44.3 21.4G 518151 G96 C~30L8 2019 02 26.53886 12 08 51.33 +11 35 46.8 20.6G 518151 G96 C~30L8 2019 04 24.28182 11 53 08.979 +14 51 20.97 21.1w 518151 F51 C~350p 2019 04 24.29371 11 53 08.811 +14 51 22.73 20.9w 518151 F51 C~350p 2020 01 21.54440 12 29 09.109 +18 18 14.42 21.2w 518151 F52 C~3i0D 2020 01 21.56841 12 29 08.987 +18 18 19.65 21.4w 518151 F52 C~3i0D 2020 01 21.58147 12 29 08.916 +18 18 22.56 21.2w 518151 F52 C~3i0D 2020 04 18.43789 12 08 50.640 +23 21 21.66 21.3w 518151 F51 C~3shV 2020 04 18.45159 12 08 50.431 +23 21 23.21 21.2w 518151 F51 C~3shV 2020 04 18.46526 12 08 50.225 +23 21 24.76 21.2w 518151 F51 C~3shV 2020 04 18.47905 12 08 50.020 +23 21 26.64 21.3w 518151 F51 C~3shV 2023 01 28.492809 13 06 58.504 +38 29 45.67 22.2G 518151 V00 C~6Egx 2023 01 28.497791 13 06 58.529 +38 29 47.04 21.9G 518151 V00 C~6Egx 2023 01 28.502755 13 06 58.504 +38 29 47.94 22.0G 518151 V00 C~6Egx 2023 01 28.507718 13 06 58.460 +38 29 49.09 22.7G 518151 V00 C~6Egx
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 0.14 0.00 0.07
2 0.0001 0.00 0.03 0.00 -0.08
3 1.0564 0.00 -0.32 0.00 -0.55
4 1.0564 0.00 -0.18 0.00 -0.06
5 1.0564 0.00 -0.04 0.00 0.28
6 1.0564 0.00 0.32 0.00 0.12
7 1.1330 0.00 -0.08 0.00 0.07
8 1.1331 0.00 -0.00 0.00 -0.00
9 1.1331 0.00 0.14 0.00 0.12
10 1.1331 0.00 -0.04 0.00 0.08
11 1.1381 0.00 0.01 0.00 -0.35
12 1.1382 0.00 -0.68 0.00 -0.54
13 1.1382 0.00 -0.32 0.00 -0.04
14 1.1383 0.00 0.14 0.00 -0.67
15 1.1383 0.00 0.02 0.00 -0.18
16 1.1383 0.00 -0.39 0.00 0.32
17 1.1390 0.00 -0.35 0.00 -0.21
18 1.1390 0.00 -0.22 0.00 0.32
19 1.1390 0.00 -0.08 0.00 0.56
20 1.1408 0.00 -0.03 0.00 -0.22
21 1.1408 0.00 0.43 0.00 -0.09
22 1.1408 0.00 0.04 0.00 -0.93
23 1.1408 0.00 0.42 0.00 -0.08
24 1.1408 0.00 0.15 0.00 -0.25
25 1.1409 0.00 -0.39 0.00 -0.16
26 1.1409 0.00 -1.41 0.00 1.42
27 1.1409 0.00 -0.14 0.00 -0.17
28 1.1409 0.00 -0.82 0.00 1.21
29 1.1409 0.00 -0.27 0.00 0.43
30 1.1411 0.00 -0.04 0.00 0.31
31 1.1412 0.00 0.78 0.00 0.44
32 1.1412 0.00 -0.05 0.00 -0.24
33 1.1517 0.00 -0.21 0.00 -0.02
34 1.1517 0.00 -0.12 0.00 0.13
35 1.1517 0.00 0.48 0.00 -0.10
36 1.1517 0.00 0.49 0.00 -0.24
37 1.1517 0.00 0.38 0.00 0.27
38 1.1518 0.00 0.65 0.00 0.19
39 1.1713 0.00 -0.01 0.00 0.05
40 1.1713 0.00 -0.04 0.00 0.02
41 1.1714 0.00 0.07 0.00 0.03
42 1.1714 0.00 0.19 0.00 -0.03
43 1.9741 0.00 0.06 0.00 0.05
44 1.9741 0.00 -0.01 0.00 0.11
45 1.9741 0.00 0.02 0.00 -0.01
46 1.9742 0.00 0.05 0.00 0.05
47 2.0483 0.00 0.08 0.00 -0.90
48 2.0483 0.00 -0.44 0.00 -0.88
49 2.0510 0.00 0.17 0.00 -0.05
50 2.0511 0.00 -0.13 0.00 0.14
51 2.0581 0.00 -0.14 0.00 0.20
52 2.0582 0.00 0.60 0.00 0.05
53 2.0582 0.00 0.20 0.00 0.10
54 2.0582 0.00 0.36 0.00 -0.36
55 2.0582 0.00 0.18 0.00 -0.20
56 2.1049 0.00 0.20 0.00 0.07
57 2.1050 0.00 0.14 0.00 0.17
58 2.1050 0.00 0.22 0.00 -0.03
59 2.1050 0.00 0.31 0.00 0.07
60 2.1211 0.00 0.00 0.00 -0.00
61 2.1212 0.00 -0.24 0.00 -0.14
62 2.1212 0.00 -0.17 0.00 0.01
63 3.0798 0.00 -0.09 0.00 0.01
64 3.0798 0.00 -0.03 0.00 -0.05
65 3.0799 0.00 -0.17 0.00 0.01
66 3.0887 0.00 -0.43 0.00 -0.20
67 3.0887 0.00 0.38 0.00 -0.30
68 3.0888 0.00 0.44 0.00 0.20
69 3.1043 0.00 0.02 0.00 0.02
70 3.1043 0.00 -0.04 0.00 -0.33
71 3.1043 0.00 -0.08 0.00 -0.03
72 3.1043 0.00 0.03 0.00 0.07
73 3.1669 0.00 0.38 0.00 0.29
74 3.1670 0.00 -0.08 0.00 0.19
75 3.1670 0.00 -0.11 0.00 0.21
76 3.1726 0.00 -0.04 0.00 -0.01
77 3.1726 0.00 -0.11 0.00 0.01
78 3.1727 0.00 -0.04 0.00 -0.04
79 3.1727 0.00 -0.04 0.00 -0.09
80 3.9318 0.00 -0.13 0.00 -0.06
81 3.9318 0.00 -0.09 0.00 -0.02
82 3.9318 0.00 -0.08 0.00 -0.08
83 3.9319 0.00 -0.08 0.00 0.06
84 3.9890 0.00 -0.09 0.00 0.14
85 3.9890 0.00 -0.08 0.00 -0.05
86 3.9891 0.00 -0.02 0.00 -0.06
87 3.9891 0.00 -0.14 0.00 0.00
88 4.0465 0.00 0.25 0.00 -0.33
89 4.0466 0.00 -0.31 0.00 0.27
90 4.0466 0.00 0.66 0.00 -0.11
91 4.0466 0.00 -0.36 0.00 1.16
92 4.2020 0.00 -0.00 0.00 -0.10
93 4.2020 0.00 -0.03 0.00 -0.10
94 4.9474 0.00 -0.09 0.00 0.13
95 4.9474 0.00 0.00 0.00 0.03
96 4.9475 0.00 -0.01 0.00 0.04
97 5.1880 0.00 -0.12 0.00 0.09
98 5.1881 0.00 -0.11 0.00 -0.03
99 5.1881 0.00 -0.07 0.00 -0.14
100 5.1881 0.00 0.01 0.00 0.06
101 7.9671 0.00 -0.35 0.00 -0.12
102 7.9671 0.00 0.35 0.00 0.10
103 7.9671 0.00 0.29 0.00 -0.14
104 7.9671 0.00 -0.04 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.
518151 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 24.594 24.594 24.595 ecceobj 0.616 0.616 0.616 incobj 93.412 93.412 93.412 qmin 9.433 8.919 9.422 qmax 40.028 41.369 40.079 amean 24.618 24.609 24.616 amin 24.445 24.438 24.468 amax 24.814 25.175 24.892 emean 0.609 0.609 0.609 emin 0.604 0.590 0.601 emax 0.616 0.645 0.617 imean 92.894 92.917 92.886 imin 92.669 92.512 92.701 imax 93.161 93.168 93.114 excite_mean 1.170 1.170 1.170 fracstop 0.007 0.032 0.007 cjmean 1.167 1.165 1.168 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 298.2 262.2 299.0 kozaiamp 8.5 43.5 7.7