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: 494158
# Created Wed Feb 20 02:07:27 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 100 observations of 100
# Arc: 5.34y
# First observation: 2013/01/16
# Last observation: 2018/05/19
# Chi-squared of fit: 284.27 DOF: 194 RMS: 0.30
# Min/Max residuals: -1.23 1.58
# Exact a, adot, b, bdot, g, gdot:
3.261307E-05 2.978721E-01 3.259981E-06 2.682167E-02 1.415627E-01 -6.215381E-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
3.962220 111.949378 -0.077355 0.067722 -0.976724 2456308.994228
# Heliocentric elements and errors
Epoch: 2456308.5000 = 2013/01/16
Mean Anomaly: 266.67807 +/- 0.000
Argument of Peri: 150.25382 +/- 0.000
Long of Asc Node: 77.72822 +/- 0.000
Inclination: 6.08679 +/- 0.000
Eccentricity: 0.20037416 +/- 0.0000
Semi-Major Axis: 7.66099948 +/- 0.0000
Time of Perihelion: 2458316.2414 +/- 0.0
Perihelion: 6.12593315 +/- 0.0000
Aphelion: 9.19606581 +/- 0.0000
Period (y) 21.2049 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -3.07086062 +/- 0.0000
Ecliptic Y 7.41788180 +/- 0.0000
Ecliptic Z 0.48811074 +/- 0.0000
Ecliptic XDOT -0.00488785 +/- 0.0000
Ecliptic YDOT -0.00329770 +/- 0.0000
Ecliptic ZDOT 0.00043457 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 8.04326718 +/- 0.0000
Geocenter to KBO 7.06409578 +/- 0.0000
# Hcoef: 12.67
The following table shows the complete astrometric record for 494158. 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 (494158) followed by the observatory code and reference code for the source of the astrometry.
2013 01 16.49345 07 37 39.664 +25 33 36.68 21.6w 494158 F51 C@0613 2013 01 16.50791 07 37 39.302 +25 33 37.65 21.6w 494158 F51 C@0613 2013 01 16.52236 07 37 38.934 +25 33 38.58 21.5w 494158 F51 C@0613 2013 01 16.53687 07 37 38.575 +25 33 39.71 21.3w 494158 F51 C@0613 2013 01 17.366682 07 37 18.174 +25 34 36.15 21.2R 494158 568 C~0o47 2013 01 17.367936 07 37 18.142 +25 34 36.24 21.1R 494158 568 C~0o47 2013 01 17.369189 07 37 18.114 +25 34 36.32 21.3R 494158 568 C~0o47 2013 01 18.280700 07 36 55.703 +25 35 37.53 21.3R 494158 568 C~0o47 2013 01 18.281952 07 36 55.670 +25 35 37.53 21.2R 494158 568 C~0o47 2013 01 18.283213 07 36 55.636 +25 35 37.69 21.1R 494158 568 C~0o47 2013 01 20.283943 07 36 06.561 +25 37 49.10 21.2R 494158 568 C~0o47 2013 01 20.285200 07 36 06.528 +25 37 49.14 21.2R 494158 568 C~0o47 2013 01 20.286469 07 36 06.496 +25 37 49.36 21.1R 494158 568 C~0o47 2013 01 22.13782 07 35 21.34 +25 39 46.6 494158 291 C~0o47 2013 01 22.16465 07 35 20.76 +25 39 49.0 21.1R 494158 291 C~0o47 2013 01 22.21327 07 35 19.57 +25 39 51.7 21.1R 494158 291 C~0o47 2013 12 31.40420 09 02 31.69 +22 20 47.0 20.8V 494158 691 C~1vZu 2013 12 31.42207 09 02 31.42 +22 20 48.0 21.4V 494158 691 C~1vZu 2013 12 31.43984 09 02 31.07 +22 20 49.9 21.1V 494158 691 C~1vZu 2014 02 23.26565 08 42 17.144 +23 53 56.55 21.5w 494158 F51 C~1vZu 2014 02 23.27820 08 42 16.883 +23 53 57.32 21.5w 494158 F51 C~1vZu 2014 02 23.29077 08 42 16.639 +23 53 58.00 21.6w 494158 F51 C~1vZu 2014 02 23.30342 08 42 16.356 +23 53 59.04 21.5w 494158 F51 C~1vZu 2014 03 02.24028 08 40 01.076 +24 00 47.46 22.0w 494158 F51 C~1vZu 2014 03 02.25177 08 40 00.838 +24 00 48.52 21.8w 494158 F51 C~1vZu 2014 03 02.26320 08 40 00.639 +24 00 48.97 21.6w 494158 F51 C~1vZu 2014 03 02.27469 08 40 00.411 +24 00 49.68 21.8w 494158 F51 C~1vZu 2014 11 29.55806 10 23 47.215 +16 08 12.23 22.1w 494158 F51 C~1vZu 2014 11 29.57113 10 23 47.357 +16 08 12.45 22.0w 494158 F51 C~1vZu 2014 11 29.58412 10 23 47.476 +16 08 12.58 22.0w 494158 F51 C~1vZu 2014 11 29.59712 10 23 47.616 +16 08 12.50 22.2w 494158 F51 C~1vZu 2015 01 23.45372 10 19 52.267 +17 21 30.84 21.3w 494158 F51 C~1vZu 2015 01 23.46561 10 19 52.045 +17 21 32.65 21.4w 494158 F51 C~1vZv 2015 01 23.47767 10 19 51.828 +17 21 34.19 21.5w 494158 F51 C~1vZv 2015 02 20.32231 10 09 42.90 +18 28 22.8 20.9V 494158 G96 C~1M9F 2015 02 20.32690 10 09 42.81 +18 28 23.3 20.7V 494158 G96 C~1M9F 2015 02 20.33149 10 09 42.69 +18 28 24.2 20.5V 494158 G96 C~1M9F 2015 02 20.33609 10 09 42.59 +18 28 24.5 20.4V 494158 G96 C~1M9F 2015 02 21.34553 10 09 18.40 +18 30 39.9 20.6V 494158 G96 C~1M9F 2015 02 21.35511 10 09 18.18 +18 30 41.5 20.6V 494158 G96 C~1M9F 2015 02 21.35989 10 09 18.11 +18 30 42.0 20.7V 494158 G96 C~1M9F 2015 02 22.23768 10 08 57.17 +18 32 38.8 20.6V 494158 G96 C~1M9F 2015 02 22.24241 10 08 57.14 +18 32 39.0 20.4V 494158 G96 C~1M9F 2015 02 22.24711 10 08 56.92 +18 32 39.8 21.1V 494158 G96 C~1M9F 2015 02 22.25182 10 08 56.84 +18 32 40.4 20.5V 494158 G96 C~1M9F 2015 03 14.26619 10 01 24.439 +19 09 38.75 21.4w 494158 F51 C~1vZv 2015 03 14.27970 10 01 24.156 +19 09 40.03 21.3w 494158 F51 C~1vZv 2015 03 14.29394 10 01 23.856 +19 09 41.28 21.4w 494158 F51 C~1vZv 2015 03 14.30692 10 01 23.588 +19 09 42.35 21.2w 494158 F51 C~1vZv 2015 03 15.24721 10 01 04.580 +19 11 01.42 21.2w 494158 F51 C~1vZv 2015 03 15.26000 10 01 04.319 +19 11 02.50 21.2w 494158 F51 C~1vZv 2015 03 15.27279 10 01 04.055 +19 11 03.59 21.1w 494158 F51 C~1vZv 2015 03 15.28557 10 01 03.796 +19 11 04.74 21.1w 494158 F51 C~1vZv 2015 04 07.24184 09 55 09.938 +19 29 03.72 21.2r 494158 F51 C~1vZv 2015 04 07.25455 09 55 09.820 +19 29 03.66 21.6r 494158 F51 C~1vZv 2015 04 07.26749 09 55 09.682 +19 29 03.83 21.3r 494158 F51 C~1vZv 2015 04 07.28047 09 55 09.532 +19 29 04.10 21.4r 494158 F51 C~1vZv 2015 06 11.29582 10 03 17.293 +17 57 11.88 22.0w 494158 F51 C~1vZv 2015 06 11.30107 10 03 17.442 +17 57 10.82 21.8w 494158 F51 C~1vZv 2015 06 11.30631 10 03 17.558 +17 57 09.99 21.9w 494158 F51 C~1vZv 2016 03 01.39127 11 39 12.347 +09 59 33.34 20.8r 494158 F51 C~1n4y 2016 03 01.40302 11 39 12.070 +09 59 35.27 20.9r 494158 F51 C~1n4y 2016 03 01.42686 11 39 11.526 +09 59 38.97 20.7r 494158 F51 C~1n4y 2016 03 02.24657 11 38 53.23 +10 01 47.4 21.2V 494158 I52 C~1n4y 2016 03 02.25987 11 38 52.90 +10 01 49.3 20.6V 494158 I52 C~1n4y 2016 03 02.27260 11 38 52.65 +10 01 52.2 21.2V 494158 I52 C~1n4y 2016 03 02.28540 11 38 52.33 +10 01 53.7 20.8V 494158 I52 C~1n4y 2016 03 03.49731 11 38 24.95 +10 05 05.0 494158 291 C~1n4y 2016 03 03.52053 11 38 24.42 +10 05 08.5 494158 291 C~1n4y 2016 03 10.37838 11 35 46.06 +10 22 47.2 20.4V 494158 G96 C~1ny5 2016 03 10.38147 11 35 46.01 +10 22 47.3 20.7V 494158 G96 C~1ny5 2016 03 10.38456 11 35 45.91 +10 22 47.9 21.0V 494158 G96 C~1ny5 2016 03 10.38765 11 35 45.85 +10 22 48.3 20.9V 494158 G96 C~1ny5 2016 03 11.35514 11 35 23.277 +10 25 13.68 20.7w 494158 F51 C~1oah 2016 03 11.36741 11 35 22.962 +10 25 15.79 20.7w 494158 F51 C~1oah 2016 03 11.37977 11 35 22.674 +10 25 17.41 20.8w 494158 F51 C~1oah 2016 03 11.39217 11 35 22.382 +10 25 19.44 20.7w 494158 F51 C~1oah 2016 03 29.30891 11 28 30.210 +11 04 49.89 21.0w 494158 F51 C~1pRP 2016 03 29.32139 11 28 29.942 +11 04 51.24 20.9w 494158 F51 C~1pRP 2016 03 29.33393 11 28 29.655 +11 04 52.73 21.0w 494158 F51 C~1pRP 2016 03 29.34655 11 28 29.375 +11 04 54.02 20.9w 494158 F51 C~1pRP 2016 04 05.32044 11 26 04.047 +11 16 30.69 20.8w 494158 F51 C~1qAj 2016 04 05.33159 11 26 03.811 +11 16 31.68 21.0w 494158 F51 C~1qAj 2016 04 05.34283 11 26 03.583 +11 16 32.73 20.8w 494158 F51 C~1qAj 2017 03 22.40843 13 13 16.486 -00 59 04.59 20.8w 494158 F51 C~2B0K 2017 03 22.42068 13 13 16.214 -00 59 02.92 20.6w 494158 F51 C~2B0K 2017 03 22.43296 13 13 15.934 -00 59 01.29 20.5w 494158 F51 C~2B0K 2017 03 22.44524 13 13 15.676 -00 58 59.45 20.7w 494158 F51 C~2B0K 2017 04 27.31388 12 59 23.654 +00 14 36.70 20.7w 494158 F51 C~2Eep 2017 04 27.32758 12 59 23.352 +00 14 37.82 20.7w 494158 F51 C~2Eep 2017 04 27.34133 12 59 23.054 +00 14 39.10 20.7w 494158 F51 C~2Eep 2017 04 27.35514 12 59 22.747 +00 14 40.29 20.7w 494158 F51 C~2Eep 2017 04 29.21021 12 58 43.95 +00 17 16.7 21.1V 494158 G96 C~2F8x 2017 04 29.21448 12 58 43.89 +00 17 18.1 20.7V 494158 G96 C~2F8x 2017 04 29.22038 12 58 43.79 +00 17 18.3 21.0V 494158 G96 C~2F8x 2017 04 29.22466 12 58 43.62 +00 17 18.4 20.9V 494158 G96 C~2F8x 2018 05 19.38121 14 45 44.411 -12 27 35.28 20.3w 494158 F51 C~2fBV 2018 05 19.39299 14 45 44.111 -12 27 34.49 20.5w 494158 F51 C~2fBV 2018 05 19.40479 14 45 43.824 -12 27 33.76 20.4w 494158 F51 C~2fBV 2018 05 19.41660 14 45 43.533 -12 27 32.94 20.3w 494158 F51 C~2fBV
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 -0.08 2 0.0000 0.00 0.17 0.00 -0.08 3 0.0001 0.00 0.10 0.00 -0.11 4 0.0001 0.00 0.19 0.00 0.05 5 0.0024 0.00 0.04 0.00 -0.12 6 0.0024 0.00 0.03 0.00 -0.12 7 0.0024 0.00 0.08 0.00 -0.12 8 0.0049 0.00 0.11 0.00 -0.03 9 0.0049 0.00 0.08 0.00 -0.11 10 0.0049 0.00 0.05 0.00 -0.04 11 0.0104 0.00 0.04 0.00 -0.04 12 0.0104 0.00 0.02 0.00 -0.09 13 0.0104 0.00 0.01 0.00 0.05 14 0.0155 0.00 -1.22 0.00 -0.07 15 0.0155 0.00 -0.04 0.00 0.59 16 0.0157 0.00 0.08 0.00 0.17 17 0.9553 0.00 -1.23 0.00 1.58 18 0.9553 0.00 -0.46 0.00 0.58 19 0.9554 0.00 -0.91 0.00 0.51 20 1.1027 0.00 -0.09 0.00 0.06 21 1.1028 0.00 -0.02 0.00 -0.03 22 1.1028 0.00 0.32 0.00 -0.21 23 1.1028 0.00 0.10 0.00 -0.03 24 1.1218 0.00 0.39 0.00 -0.59 25 1.1219 0.00 0.03 0.00 -0.13 26 1.1219 0.00 0.25 0.00 -0.29 27 1.1219 0.00 0.05 0.00 -0.18 28 1.8674 0.00 -0.04 0.00 -0.24 29 1.8674 0.00 0.09 0.00 -0.04 30 1.8675 0.00 -0.10 0.00 0.07 31 1.8675 0.00 0.03 0.00 -0.03 32 2.0177 0.00 -0.04 0.00 -0.11 33 2.0177 0.00 -0.06 0.00 0.01 34 2.0178 0.00 0.06 0.00 -0.16 35 2.0940 0.00 0.20 0.00 -0.03 36 2.0940 0.00 0.53 0.00 -0.15 37 2.0940 0.00 0.41 0.00 0.13 38 2.0940 0.00 0.60 0.00 -0.19 39 2.0968 0.00 -0.29 0.00 -0.28 40 2.0968 0.00 -0.08 0.00 0.05 41 2.0968 0.00 0.62 0.00 -0.09 42 2.0992 0.00 0.10 0.00 0.23 43 2.0992 0.00 1.38 0.00 -0.20 44 2.0993 0.00 -0.21 0.00 -0.03 45 2.0993 0.00 0.32 0.00 -0.05 46 2.1541 0.00 0.01 0.00 0.01 47 2.1541 0.00 -0.01 0.00 0.11 48 2.1541 0.00 -0.04 0.00 0.12 49 2.1542 0.00 0.01 0.00 0.06 50 2.1568 0.00 -0.09 0.00 0.03 51 2.1568 0.00 -0.07 0.00 0.02 52 2.1568 0.00 -0.09 0.00 0.03 53 2.1569 0.00 -0.03 0.00 0.11 54 2.2197 0.00 -0.13 0.00 0.20 55 2.2197 0.00 0.11 0.00 -0.00 56 2.2198 0.00 0.09 0.00 0.03 57 2.2198 0.00 -0.10 0.00 0.17 58 2.3978 0.00 -0.06 0.00 -0.18 59 2.3978 0.00 0.36 0.00 -0.37 60 2.3978 0.00 0.28 0.00 -0.34 61 3.1209 0.00 0.09 0.00 0.04 62 3.1209 0.00 -0.05 0.00 0.11 63 3.1210 0.00 -0.05 0.00 0.03 64 3.1232 0.00 -0.25 0.00 -0.46 65 3.1232 0.00 -0.63 0.00 -0.66 66 3.1233 0.00 -0.01 0.00 0.22 67 3.1233 0.00 -0.41 0.00 -0.30 68 3.1266 0.00 0.01 0.00 0.46 69 3.1267 0.00 0.04 0.00 0.35 70 3.1455 0.00 -0.50 0.00 0.31 71 3.1455 0.00 -0.14 0.00 -0.06 72 3.1455 0.00 -0.53 0.00 0.08 73 3.1455 0.00 -0.32 0.00 0.01 74 3.1481 0.00 0.05 0.00 -0.26 75 3.1482 0.00 -0.25 0.00 0.00 76 3.1482 0.00 -0.12 0.00 -0.23 77 3.1483 0.00 -0.02 0.00 -0.07 78 3.1973 0.00 -0.21 0.00 -0.02 79 3.1973 0.00 -0.05 0.00 -0.06 80 3.1974 0.00 -0.16 0.00 0.03 81 3.1974 0.00 -0.14 0.00 -0.08 82 3.2165 0.00 -0.00 0.00 0.03 83 3.2165 0.00 -0.13 0.00 0.02 84 3.2166 0.00 -0.10 0.00 0.07 85 4.1777 0.00 0.02 0.00 0.12 86 4.1778 0.00 0.05 0.00 0.09 87 4.1778 0.00 -0.02 0.00 0.02 88 4.1778 0.00 0.24 0.00 0.16 89 4.2760 0.00 0.12 0.00 0.08 90 4.2761 0.00 0.07 0.00 -0.00 91 4.2761 0.00 0.10 0.00 0.07 92 4.2761 0.00 0.02 0.00 0.05 93 4.2812 0.00 -0.05 0.00 -0.48 94 4.2812 0.00 0.41 0.00 0.57 95 4.2813 0.00 0.79 0.00 0.28 96 4.2813 0.00 -0.40 0.00 0.03 97 5.3358 0.00 0.01 0.00 -0.02 98 5.3358 0.00 -0.10 0.00 -0.01 99 5.3358 0.00 -0.01 0.00 -0.06 100 5.3359 0.00 0.03 0.00 -0.02
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.
494158 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 7.651 7.651 7.651 ecceobj 0.202 0.202 0.202 incobj 6.093 6.093 6.093 qmin 6.108 6.108 5.694 qmax 9.193 9.193 9.938 amean 7.651 7.651 7.733 amin 7.651 7.651 7.650 amax 7.651 7.651 7.816 emean 0.202 0.202 0.237 emin 0.202 0.202 0.202 emax 0.202 0.202 0.271 imean 4.788 4.788 4.825 imin 4.788 4.788 4.788 imax 4.788 4.788 4.863 excite_mean 0.218 0.218 0.251 fracstop 0.000 0.000 0.000 cjmean 4.918 4.918 4.867 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 151.3 151.3 192.2 kozaiamp 0.0 0.0 40.9