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: 492338 # Created Sun Dec 22 02:07:12 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 98 observations of 98 # Arc: 9.61y # First observation: 2011/01/30 # Last observation: 2020/09/09 # Chi-squared of fit: 165.20 DOF: 190 RMS: 0.23 # Min/Max residuals: -1.43 0.62 # Exact a, adot, b, bdot, g, gdot: 2.873842E-05 1.431275E-01 3.381587E-06 2.163254E-02 7.641995E-02 -6.333818E-02 # 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 10.065550 146.695678 0.280505 0.165588 -0.932965 2455591.956486 # Heliocentric elements and errors Epoch: 2455592.5000 = 2011/01/31 Mean Anomaly: 345.66574 +/- 0.000 Argument of Peri: 114.80464 +/- 0.000 Long of Asc Node: 98.25006 +/- 0.000 Inclination: 12.68520 +/- 0.000 Eccentricity: 0.62843035 +/- 0.0000 Semi-Major Axis: 28.89895747 +/- 0.0000 Time of Perihelion: 2457851.9077 +/- 0.0 Perihelion: 10.73797565 +/- 0.0000 Aphelion: 47.05993929 +/- 0.0000 Period (y) 155.3572 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -11.40211754 +/- 0.0000 Ecliptic Y 7.82839423 +/- 0.0000 Ecliptic Z 2.28707703 +/- 0.0000 Ecliptic XDOT -0.00083613 +/- 0.0000 Ecliptic YDOT -0.00558067 +/- 0.0000 Ecliptic ZDOT 0.00036650 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 14.01883543 +/- 0.0000 Geocenter to KBO 13.08579079 +/- 0.0000 # Hcoef: 9.87
The following table shows the complete astrometric record for 492338. 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 (492338) followed by the observatory code and reference code for the source of the astrometry.
2011 01 30.45572 10 10 24.67 +22 02 57.6 21.4V 492338 G96 C~2FwK 2011 01 30.46318 10 10 24.56 +22 02 58.1 21.6V 492338 G96 C~2FwK 2011 01 30.47072 10 10 24.45 +22 02 58.6 21.8V 492338 G96 C~2FwK 2011 01 30.47824 10 10 24.38 +22 02 59.3 20.9V 492338 G96 C~2FwK 2014 03 12.33480 12 04 15.25 +14 15 23.4 20.4V 492338 G96 C~12DW 2014 03 12.33940 12 04 15.20 +14 15 23.9 20.7V 492338 G96 C~12DW 2014 03 12.34398 12 04 15.11 +14 15 24.5 20.6V 492338 G96 C~12DW 2014 03 12.34856 12 04 15.05 +14 15 25.0 20.1V 492338 G96 C~12DW 2014 03 20.33384 12 02 29.40 +14 27 55.3 20.1V 492338 G96 C~12DW 2014 03 20.33931 12 02 29.34 +14 27 55.8 20.3V 492338 G96 C~12DW 2014 03 20.34479 12 02 29.26 +14 27 56.3 20.6V 492338 G96 C~12DW 2014 03 20.35026 12 02 29.19 +14 27 56.8 20.5V 492338 G96 C~12DW 2014 03 22.37018 12 02 02.19 +14 30 52.8 20.6V 492338 G96 C~12DW 2014 03 22.37905 12 02 02.06 +14 30 53.7 20.1V 492338 G96 C~12DW 2014 03 22.38794 12 02 01.93 +14 30 54.6 20.7V 492338 G96 C~12DW 2014 03 22.39682 12 02 01.81 +14 30 55.3 20.4V 492338 G96 C~12DW 2014 03 22.89522 12 01 55.21 +14 31 37.2 20.4R 492338 Z95 C~12DW 2014 03 22.92376 12 01 54.81 +14 31 40.0 20.0R 492338 Z95 C~12DW 2014 03 22.94160 12 01 54.57 +14 31 41.5 20.1R 492338 Z95 C~12DW 2014 03 22.94517 12 01 54.53 +14 31 41.9 20.0R 492338 Z95 C~12DW 2014 04 01.83340 11 59 43.82 +14 44 15.9 20.5V 492338 A13 C~12gu 2014 04 01.85938 11 59 43.41 +14 44 19.0 20.1V 492338 A13 C~12gu 2015 01 28.39951 12 56 52.21 +08 17 56.4 20.6R 492338 H36 C~1LM9 2015 01 28.43462 12 56 52.19 +08 17 58.8 20.5R 492338 H36 C~1LM9 2015 01 28.46678 12 56 52.18 +08 18 00.8 20.5R 492338 H36 C~1LM9 2015 02 14.12400 12 56 03.95 +08 42 02.7 20.1R 492338 461 C~1LM9 2015 02 14.14312 12 56 03.84 +08 42 04.1 20.4R 492338 461 C~1LM9 2015 02 14.16168 12 56 03.73 +08 42 06.1 20.1R 492338 461 C~1LM9 2015 02 14.34543 12 56 02.74 +08 42 23.7 20.4R 492338 H36 C~1LM9 2015 02 14.36466 12 56 02.61 +08 42 25.8 20.5R 492338 H36 C~1LM9 2015 02 14.46964 12 56 01.99 +08 42 35.4 20.0R 492338 H36 C~1LM9 2015 03 16.30295 12 51 21.72 +09 34 06.5 19.8R 492338 G37 C~1N85 2015 03 16.37624 12 51 20.79 +09 34 14.0 492338 G37 C~1N85 2015 03 25.34904 12 49 25.21 +09 48 51.3 20.2r 492338 G45 C~1Qea 2015 03 25.35864 12 49 25.11 +09 48 53.9 20.6r 492338 G45 C~1Qea 2015 03 25.36619 12 49 25.00 +09 48 53.7 20.2r 492338 G45 C~1Qea 2015 03 25.37562 12 49 24.89 +09 48 54.7 20.3r 492338 G45 C~1Qea 2016 02 04.45048 13 44 34.00 +03 05 25.7 20.4R 492338 G37 C~1lwf 2016 02 04.53274 13 44 34.14 +03 05 30.4 492338 G37 C~1lwf 2016 04 05.42090 13 37 15.867 +04 32 30.25 20.2w 492338 F51 C~1qA0 2016 04 05.43579 13 37 15.655 +04 32 31.57 20.2w 492338 F51 C~1qA0 2016 04 05.44720 13 37 15.507 +04 32 32.45 20.3w 492338 F51 C~1qA0 2016 04 05.45866 13 37 15.343 +04 32 33.43 20.3w 492338 F51 C~1qA0 2017 03 26.71329 14 30 55.79 -01 38 15.7 20.4R 492338 D29 C~2BnP 2017 03 26.73299 14 30 55.63 -01 38 13.5 20.3R 492338 D29 C~2BnP 2017 03 26.75269 14 30 55.40 -01 38 12.0 20.4R 492338 D29 C~2BnP 2017 03 31.83150 14 30 00.79 -01 31 32.3 20.3R 492338 D29 C~2ChF 2017 03 31.85243 14 30 00.55 -01 31 30.1 20.0R 492338 D29 C~2ChF 2017 04 26.43966 14 24 24.331 -01 01 21.06 20.2w 492338 F51 C~2Ee1 2017 04 26.45217 14 24 24.145 -01 01 20.33 20.3w 492338 F51 C~2Ee1 2017 04 26.46464 14 24 23.967 -01 01 19.58 20.2w 492338 F51 C~2Ee1 2017 04 26.47706 14 24 23.783 -01 01 18.85 20.3w 492338 F51 C~2Ee1 2018 05 09.68181 15 13 26.57 -06 43 25.8 20.4R 492338 D29 C~2e8n 2018 05 09.69595 15 13 26.31 -06 43 25.5 20.7R 492338 D29 C~2e8n 2018 05 09.71009 15 13 26.15 -06 43 24.8 20.6R 492338 D29 C~2e8n 2019 05 25.38273 16 00 42.780 -11 53 11.14 20.3w 492338 F52 C~39j1 2019 05 25.39567 16 00 42.575 -11 53 10.87 20.3w 492338 F52 C~39j1 2019 05 25.40871 16 00 42.381 -11 53 10.79 20.3w 492338 F52 C~39j1 2019 05 30.39670 15 59 29.581 -11 51 50.26 20.4w 492338 F51 C~39j1 2019 05 30.40876 15 59 29.400 -11 51 50.15 20.4w 492338 F51 C~39j1 2019 05 30.42084 15 59 29.224 -11 51 49.92 20.4w 492338 F51 C~39j1 2019 05 30.43292 15 59 29.040 -11 51 49.70 20.3w 492338 F51 C~39j1 2019 06 03.46552 15 58 31.086 -11 51 02.17 20.4w 492338 F51 C~4fHD 2019 06 03.47821 15 58 30.902 -11 51 02.03 20.5w 492338 F51 C~4fHD 2019 06 03.49092 15 58 30.720 -11 51 01.87 20.5w 492338 F51 C~4fHD 2019 06 03.50369 15 58 30.530 -11 51 01.70 20.5w 492338 F51 C~4fHD 2020 04 02.60037 16 57 42.479 -16 24 36.06 20.9w 492338 F51 C~3pGp 2020 04 02.61000 16 57 42.454 -16 24 35.91 21.0w 492338 F51 C~3pGp 2020 04 02.61964 16 57 42.429 -16 24 35.85 21.0w 492338 F51 C~3pGp 2020 04 02.62926 16 57 42.404 -16 24 35.66 20.9w 492338 F51 C~3pGp 2020 05 24.40104 16 49 28.202 -16 13 59.29 20.5w 492338 F51 C~3wP9 2020 05 24.40977 16 49 28.074 -16 13 59.29 20.4w 492338 F51 C~3wP9 2020 05 24.41851 16 49 27.947 -16 13 59.14 20.4w 492338 F51 C~3wP9 2020 05 24.42729 16 49 27.817 -16 13 59.11 20.5w 492338 F51 C~3wP9 2020 06 11.36555 16 45 06.460 -16 13 01.41 20.4w 492338 F52 C~3xml 2020 06 11.37680 16 45 06.293 -16 13 01.44 20.6w 492338 F52 C~3xml 2020 06 11.38805 16 45 06.116 -16 13 01.50 20.5w 492338 F52 C~3xml 2020 06 11.39938 16 45 05.956 -16 13 01.64 20.4w 492338 F52 C~3xml 2020 06 14.37754 16 44 23.352 -16 13 09.28 20.6w 492338 F51 C~3xml 2020 06 14.38728 16 44 23.213 -16 13 09.39 20.6w 492338 F51 C~3xml 2020 06 14.39737 16 44 23.067 -16 13 09.38 20.6w 492338 F51 C~3xml 2020 06 14.40743 16 44 22.920 -16 13 09.41 20.6w 492338 F51 C~3xml 2020 06 17.36296 16 43 41.382 -16 13 22.85 20.7w 492338 F51 C~3xml 2020 06 17.37484 16 43 41.215 -16 13 22.88 20.6w 492338 F51 C~3xml 2020 06 17.38669 16 43 41.043 -16 13 23.01 20.6w 492338 F51 C~3xml 2020 06 17.39854 16 43 40.878 -16 13 23.13 20.6w 492338 F51 C~3xml 2020 07 21.35464 16 37 30.260 -16 23 40.00 20.9w 492338 F51 C~42yk 2020 07 21.36436 16 37 30.190 -16 23 40.27 20.9w 492338 F51 C~42yk 2020 07 21.37405 16 37 30.121 -16 23 40.57 21.0w 492338 F51 C~42yk 2020 07 21.38378 16 37 30.054 -16 23 40.97 20.9w 492338 F51 C~42yk 2020 08 16.29030 16 36 15.816 -16 41 42.23 21.0w 492338 F51 C~46hT 2020 08 16.30116 16 36 15.816 -16 41 42.67 20.9w 492338 F51 C~46hT 2020 08 16.31202 16 36 15.842 -16 41 43.35 21.0w 492338 F51 C~46hT 2020 08 16.32288 16 36 15.856 -16 41 43.92 20.9w 492338 F51 C~46hT 2020 09 09.24511 16 38 24.107 -17 05 04.88 21.0w 492338 F51 C~4Iae 2020 09 09.24962 16 38 24.141 -17 05 05.32 21.0w 492338 F51 C~4Iae 2020 09 09.25413 16 38 24.193 -17 05 05.77 21.1w 492338 F51 C~4Iae 2020 09 09.25865 16 38 24.216 -17 05 05.74 21.0w 492338 F51 C~4Iae
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 0.27 0.00 0.15
2 0.0000 0.00 -0.06 0.00 -0.02
3 0.0000 0.00 -0.38 0.00 -0.19
4 0.0001 0.00 -0.10 0.00 -0.16
5 3.1126 0.00 0.03 0.00 -0.17
6 3.1126 0.00 0.20 0.00 -0.12
7 3.1126 0.00 -0.23 0.00 0.03
8 3.1126 0.00 -0.22 0.00 0.07
9 3.1345 0.00 -0.13 0.00 0.05
10 3.1345 0.00 0.09 0.00 0.07
11 3.1345 0.00 0.01 0.00 0.08
12 3.1346 0.00 0.08 0.00 0.10
13 3.1401 0.00 0.24 0.00 -0.04
14 3.1401 0.00 0.10 0.00 0.10
15 3.1401 0.00 -0.03 0.00 0.25
16 3.1402 0.00 -0.01 0.00 0.19
17 3.1415 0.00 0.17 0.00 -0.30
18 3.1416 0.00 -0.01 0.00 0.07
19 3.1416 0.00 0.03 0.00 0.05
20 3.1417 0.00 0.16 0.00 0.14
21 3.1687 0.00 0.39 0.00 -1.17
22 3.1688 0.00 -0.64 0.00 0.17
23 3.9944 0.00 0.10 0.00 0.61
24 3.9945 0.00 0.02 0.00 0.40
25 3.9946 0.00 0.09 0.00 0.01
26 4.0402 0.00 0.19 0.00 0.62
27 4.0402 0.00 0.19 0.00 0.18
28 4.0403 0.00 0.14 0.00 0.38
29 4.0408 0.00 0.10 0.00 0.06
30 4.0408 0.00 -0.17 0.00 0.29
31 4.0411 0.00 -0.21 0.00 -0.30
32 4.1228 0.00 0.16 0.00 0.15
33 4.1230 0.00 0.12 0.00 0.18
34 4.1476 0.00 -0.58 0.00 -1.43
35 4.1476 0.00 -0.13 0.00 0.27
36 4.1476 0.00 -0.24 0.00 -0.63
37 4.1476 0.00 0.03 0.00 -0.51
38 5.0130 0.00 -0.16 0.00 -0.07
39 5.0132 0.00 -0.13 0.00 -0.11
40 5.1799 0.00 0.12 0.00 0.08
41 5.1800 0.00 0.03 0.00 0.16
42 5.1800 0.00 0.18 0.00 0.08
43 5.1800 0.00 0.10 0.00 0.10
44 6.1527 0.00 -0.51 0.00 -0.35
45 6.1527 0.00 0.19 0.00 0.30
46 6.1528 0.00 -0.17 0.00 0.24
47 6.1667 0.00 -0.19 0.00 -0.46
48 6.1667 0.00 -0.16 0.00 0.10
49 6.2368 0.00 0.17 0.00 -0.04
50 6.2368 0.00 0.11 0.00 -0.04
51 6.2368 0.00 0.16 0.00 -0.01
52 6.2369 0.00 0.11 0.00 -0.00
53 7.2724 0.00 0.37 0.00 0.60
54 7.2724 0.00 -0.38 0.00 0.34
55 7.2724 0.00 0.35 0.00 0.48
56 8.3147 0.00 0.08 0.00 -0.01
57 8.3147 0.00 -0.09 0.00 0.02
58 8.3147 0.00 -0.06 0.00 -0.13
59 8.3284 0.00 -0.03 0.00 -0.06
60 8.3284 0.00 -0.06 0.00 -0.12
61 8.3284 0.00 -0.01 0.00 -0.05
62 8.3285 0.00 -0.08 0.00 -0.00
63 8.3395 0.00 -0.01 0.00 -0.06
64 8.3396 0.00 -0.01 0.00 -0.05
65 8.3396 0.00 0.03 0.00 -0.02
66 8.3396 0.00 -0.04 0.00 0.02
67 9.1722 0.00 -0.04 0.00 -0.05
68 9.1722 0.00 -0.03 0.00 -0.00
69 9.1722 0.00 -0.01 0.00 -0.05
70 9.1723 0.00 0.01 0.00 0.03
71 9.3140 0.00 -0.08 0.00 -0.00
72 9.3140 0.00 -0.08 0.00 -0.06
73 9.3141 0.00 -0.07 0.00 0.02
74 9.3141 0.00 -0.08 0.00 -0.01
75 9.3632 0.00 0.08 0.00 -0.00
76 9.3632 0.00 0.06 0.00 -0.01
77 9.3633 0.00 -0.11 0.00 -0.05
78 9.3633 0.00 -0.00 0.00 -0.17
79 9.3714 0.00 -0.08 0.00 0.02
80 9.3715 0.00 -0.04 0.00 -0.05
81 9.3715 0.00 -0.03 0.00 -0.01
82 9.3715 0.00 -0.05 0.00 -0.00
83 9.3796 0.00 -0.06 0.00 -0.04
84 9.3797 0.00 -0.03 0.00 0.00
85 9.3797 0.00 -0.07 0.00 -0.06
86 9.3797 0.00 -0.02 0.00 -0.12
87 9.4727 0.00 -0.00 0.00 -0.01
88 9.4727 0.00 -0.00 0.00 0.02
89 9.4727 0.00 0.01 0.00 0.02
90 9.4728 0.00 0.05 0.00 -0.07
91 9.5437 0.00 0.02 0.00 -0.05
92 9.5437 0.00 -0.15 0.00 0.06
93 9.5438 0.00 0.06 0.00 -0.07
94 9.5438 0.00 0.09 0.00 -0.09
95 9.6093 0.00 0.16 0.00 0.13
96 9.6093 0.00 0.06 0.00 -0.02
97 9.6093 0.00 0.22 0.00 -0.18
98 9.6093 0.00 -0.04 0.00 0.13
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.
492338 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 28.986 28.986 28.986 ecceobj 0.628 0.628 0.628 incobj 12.671 12.671 12.671 qmin 10.591 10.420 10.651 qmax 63.933 51.803 47.914 amean 30.516 26.696 29.024 amin 25.651 23.537 28.481 amax 37.315 31.252 29.301 emean 0.643 0.598 0.629 emin 0.576 0.542 0.624 emax 0.713 0.658 0.635 imean 11.422 11.421 11.117 imin 10.970 9.904 10.973 imax 11.851 13.524 11.295 excite_mean 0.673 0.630 0.658 fracstop 0.008 0.008 0.001 cjmean 2.497 2.608 2.534 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 158.5 184.1 118.5 kozaiamp 48.7 80.7 3.6