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: 15QW23 # Created Sat Apr 27 01:17:25 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 73 observations of 73 # Arc: 9.38y # First observation: 2012/04/23 # Last observation: 2021/09/10 # Chi-squared of fit: 98.89 DOF: 140 RMS: 0.21 # Min/Max residuals: -0.60 0.61 # Exact a, adot, b, bdot, g, gdot: 1.340090E-05 1.784475E-02 -5.599234E-06 -6.087403E-03 2.090165E-02 1.085585E-03 # Covariance matrix: 2.3475E-13 -6.2244E-14 -3.0087E-14 1.9346E-14 3.3233E-14 -2.7971E-13 -6.2244E-14 4.8952E-14 3.7726E-14 -1.8425E-14 4.6403E-14 2.7518E-13 -3.0087E-14 3.7726E-14 1.2625E-13 -2.7985E-14 4.6491E-14 2.2356E-13 1.9346E-14 -1.8425E-14 -2.7985E-14 9.5575E-15 -1.8378E-14 -1.0865E-13 3.3233E-14 4.6403E-14 4.6491E-14 -1.8378E-14 1.2253E-13 2.8306E-13 -2.7971E-13 2.7518E-13 2.2356E-13 -1.0865E-13 2.8306E-13 1.6237E-12 # lat0 lon0 xBary yBary zBary JD0 -8.802469 -60.846031 1.005790 -0.012242 -0.078827 2456041.129027 # Heliocentric elements and errors Epoch: 2456040.5000 = 2012/04/23 Mean Anomaly: 104.83158 +/- 0.069 Argument of Peri: 96.46498 +/- 0.064 Long of Asc Node: 94.06786 +/- 0.000 Inclination: 20.90140 +/- 0.000 Eccentricity: 0.03704439 +/- 0.0001 Semi-Major Axis: 47.42251541 +/- 0.0025 Time of Perihelion: 2421305.6899 +/- 23.0 Perihelion: 45.66577719 +/- 0.0039 Aphelion: 49.17925363 +/- 0.0040 Period (y) 326.5766 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 22.19639258 +/- 0.0004 Ecliptic Y -41.84742903 +/- 0.0007 Ecliptic Z -7.32157473 +/- 0.0001 Ecliptic XDOT 0.00204534 +/- 0.0000 Ecliptic YDOT 0.00112617 +/- 0.0000 Ecliptic ZDOT -0.00080964 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.93214268 +/- 0.0006 Geocenter to KBO 47.84309289 +/- 0.0008 # Hcoef: 6.14
The following table shows the complete astrometric record for 15QW23. 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 (15QW23) followed by the observatory code and reference code for the source of the astrometry.
2012 04 23.628261 20 13 28.831 -28 55 36.88 19.8G 15QW23 F51 C~5Zbj 2012 04 23.635640 20 13 28.830 -28 55 36.68 20.1G 15QW23 F51 C~5Zbj 2012 06 16.574329 20 11 57.766 -29 12 06.93 23.0G 15QW23 F51 C~5Zbj 2013 07 04.438038 20 15 46.262 -29 25 09.06 23.1G 15QW23 F51 C~5Zbj 2013 07 04.450620 20 15 46.192 -29 25 09.46 22.2G 15QW23 F51 C~5Zbj 2013 07 04.463189 20 15 46.126 -29 25 09.66 23.2G 15QW23 F51 C~5Zbj 2013 07 04.475765 20 15 46.066 -29 25 09.70 22.9G 15QW23 F51 C~5Zbj 2014 05 23.572853 20 23 03.185 -29 16 17.53 22.8G 15QW23 F51 C~5Zbj 2014 07 29.443403 20 18 52.554 -29 39 20.84 23.2G 15QW23 F51 C~5Zbj 2014 07 31.421543 20 18 43.231 -29 39 53.60 23.8G 15QW23 F51 C~5Zbj 2014 08 22.379610 20 17 05.125 -29 44 38.69 22.7G 15QW23 F51 C~5Zbj 2014 09 13.312397 20 15 48.168 -29 46 45.02 22.9G 15QW23 F51 C~5Zbj 2014 09 28.252105 20 15 14.917 -29 46 32.64 22.9G 15QW23 F51 C~5Zbj 2014 09 28.289058 20 15 14.860 -29 46 32.36 22.9G 15QW23 F51 C~5Zbj 2015 07 27.426027 20 24 04.768 -29 44 29.79 22.9G 15QW23 F51 C~5Zbj 2015 07 27.446664 20 24 04.666 -29 44 29.57 22.8G 15QW23 F51 C~5Zbj 2015 07 27.456976 20 24 04.628 -29 44 30.52 22.5G 15QW23 F51 C~5Zbj 2015 08 08.416246 20 23 08.692 -29 47 45.23 23.2G 15QW23 F51 C~5Zbj 2015 08 09.384733 20 23 04.235 -29 47 59.39 22.9G 15QW23 F51 C~5Zbj 2015 08 16.125243 20 22 33.94 -29 49 28.8 15QW23 W84 C~4pVy 2015 08 16.132188 20 22 33.92 -29 49 28.9 15QW23 W84 C~4pVy 2015 08 16.194097 20 22 33.64 -29 49 29.9 15QW23 W84 C~4pVy 2015 08 16.201042 20 22 33.62 -29 49 29.9 15QW23 W84 C~4pVy 2015 08 17.193194 20 22 29.27 -29 49 41.6 15QW23 W84 C~5Zbj 2015 08 18.02883 20 22 25.608 -29 49 52.00 22.9r 15QW23 807 C~3wqH 2015 08 18.09345 20 22 25.342 -29 49 52.80 22.9r 15QW23 807 C~3wqH 2015 08 18.16009 20 22 25.021 -29 49 53.57 22.9r 15QW23 807 C~3wqH 2015 09 04.98968 20 21 14.983 -29 52 24.42 15QW23 807 C~3wqH 2015 09 05.99125 20 21 11.538 -29 52 29.83 15QW23 807 C~3wqH 2015 10 05.227166 20 20 03.569 -29 52 17.02 22.7G 15QW23 F51 C~5Zbj 2017 08 15.398213 20 32 38.639 -29 59 11.46 23.0G 15QW23 F51 C~5Zbj 2017 08 16.358436 20 32 34.37 -29 59 24.5 15QW23 568 C~5Zbj 2017 08 16.359392 20 32 34.37 -29 59 24.5 15QW23 568 C~5Zbj 2018 05 25.570656 20 42 50.490 -29 33 27.86 21.6G 15QW23 F51 C~5Zbj 2018 06 17.559976 20 41 55.353 -29 42 18.74 23.0G 15QW23 F51 C~5Zbj 2018 06 18.544698 20 41 52.142 -29 42 42.60 23.1G 15QW23 F51 C~5Zbj 2018 07 10.464914 20 40 27.355 -29 51 25.06 22.9G 15QW23 F51 C~5Zbj 2018 08 05.390175 20 38 28.242 -30 00 16.59 24.2G 15QW23 F51 C~5Zbj 2018 08 07.400129 20 38 18.848 -30 00 50.39 23.0G 15QW23 F51 C~5Zbj 2019 06 07.414663 20 47 24.73 -29 40 33.8 15QW23 W84 C~5Zbj 2019 06 29.467052 20 46 15.276 -29 49 32.45 22.6G 15QW23 F51 C~5Zbj 2019 07 06.469581 20 45 47.424 -29 52 23.37 23.2G 15QW23 F51 C~5Zbj 2019 07 06.481238 20 45 47.367 -29 52 23.48 22.9G 15QW23 F51 C~5Zbj 2019 07 06.492871 20 45 47.330 -29 52 23.52 22.8G 15QW23 F51 C~5Zbj 2019 07 06.504509 20 45 47.272 -29 52 24.09 22.9G 15QW23 F51 C~5Zbj 2019 07 14.505733 20 45 13.03 -29 55 32.6 15QW23 568 C~5Zbj 2019 09 23.297632 20 40 22.734 -30 10 42.83 23.1G 15QW23 F51 C~5Zbj 2020 05 25.594949 20 52 46.196 -29 37 34.33 23.6G 15QW23 F51 C~5Zbj 2020 06 15.565602 20 52 00.950 -29 45 51.87 22.9G 15QW23 F51 C~5Zbj 2020 06 17.532735 20 51 55.01 -29 46 40.9 15QW23 568 C~5Zbj 2020 07 22.420645 20 49 36.701 -30 00 48.96 22.2G 15QW23 F51 C~5Zbj 2020 07 22.431272 20 49 36.649 -30 00 49.15 23.0G 15QW23 F51 C~5Zbj 2020 07 22.452537 20 49 36.575 -30 00 49.77 22.1G 15QW23 F51 C~5Zbj 2020 08 14.315478 20 47 50.753 -30 08 05.86 22.9G 15QW23 F51 C~5Zbj 2020 08 14.326056 20 47 50.697 -30 08 05.84 22.6G 15QW23 F51 C~5Zbj 2020 08 14.336646 20 47 50.646 -30 08 06.39 23.0G 15QW23 F51 C~5Zbj 2020 08 14.347208 20 47 50.583 -30 08 06.66 23.1G 15QW23 F51 C~5Zbj 2020 09 15.249870 20 45 44.472 -30 13 10.57 23.5G 15QW23 F51 C~5Zbj 2021 06 06.531905 20 57 24.475 -29 43 01.53 22.4G 15QW23 F51 C~5Zbj 2021 06 06.542904 20 57 24.481 -29 43 01.99 22.2G 15QW23 F51 C~5Zbj 2021 06 06.553892 20 57 24.422 -29 43 02.46 22.5G 15QW23 F51 C~5Zbj 2021 06 13.593516 20 57 07.304 -29 45 56.80 23.6G 15QW23 F51 C~5Zbj 2021 07 05.515992 20 55 53.182 -29 55 15.89 22.5G 15QW23 F51 C~5Zbj 2021 07 30.346170 20 54 04.157 -30 04 57.99 22.2G 15QW23 F51 C~5Zbj 2021 07 30.357877 20 54 04.117 -30 04 58.08 22.4G 15QW23 F51 C~5Zbj 2021 07 30.369580 20 54 04.039 -30 04 58.08 22.4G 15QW23 F51 C~5Zbj 2021 07 30.381272 20 54 03.972 -30 04 58.42 22.1G 15QW23 F51 C~5Zbj 2021 07 31.394638 20 53 59.285 -30 05 19.80 22.5G 15QW23 F51 C~5Zbj 2021 07 31.406293 20 53 59.237 -30 05 19.64 22.9G 15QW23 F51 C~5Zbj 2021 07 31.417945 20 53 59.184 -30 05 20.28 22.4G 15QW23 F51 C~5Zbj 2021 08 28.333784 20 51 53.372 -30 12 51.33 23.0G 15QW23 F51 C~5Zbj 2021 09 07.333821 20 51 14.042 -30 14 22.07 22.9G 15QW23 F51 C~5Zbj 2021 09 10.251138 20 51 03.559 -30 14 39.81 23.7G 15QW23 F51 C~5Zbj
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 -0.03 0.00 0.20
2 0.0000 0.00 -0.11 0.00 0.50
3 0.1477 0.00 -0.12 0.00 -0.11
4 1.1959 0.00 0.37 0.00 -0.11
5 1.1960 0.00 0.17 0.00 -0.25
6 1.1960 0.00 0.03 0.00 -0.19
7 1.1960 0.00 -0.03 0.00 0.03
8 2.0806 0.00 0.17 0.00 -0.22
9 2.2637 0.00 0.06 0.00 0.12
10 2.2691 0.00 -0.04 0.00 -0.18
11 2.3292 0.00 0.06 0.00 0.13
12 2.3893 0.00 0.17 0.00 -0.10
13 2.4302 0.00 0.03 0.00 0.08
14 2.4303 0.00 0.11 0.00 0.23
15 3.2575 0.00 0.00 0.00 0.03
16 3.2575 0.00 -0.04 0.00 0.61
17 3.2576 0.00 0.13 0.00 -0.15
18 3.2903 0.00 -0.02 0.00 0.01
19 3.2930 0.00 -0.24 0.00 -0.11
20 3.3114 0.00 -0.09 0.00 0.09
21 3.3114 0.00 0.08 0.00 0.07
22 3.3116 0.00 0.04 0.00 -0.17
23 3.3116 0.00 0.20 0.00 -0.09
24 3.3143 0.00 0.13 0.00 0.17
25 3.3166 0.00 -0.46 0.00 -0.41
26 3.3168 0.00 -0.19 0.00 -0.45
27 3.3170 0.00 -0.60 0.00 -0.44
28 3.3658 0.00 0.07 0.00 0.25
29 3.3686 0.00 -0.06 0.00 -0.01
30 3.4486 0.00 0.29 0.00 0.15
31 5.3108 0.00 -0.18 0.00 0.30
32 5.3134 0.00 -0.18 0.00 0.06
33 5.3134 0.00 -0.12 0.00 0.08
34 6.0861 0.00 -0.10 0.00 -0.43
35 6.1490 0.00 -0.04 0.00 0.03
36 6.1517 0.00 -0.13 0.00 -0.06
37 6.2117 0.00 0.16 0.00 0.07
38 6.2827 0.00 0.51 0.00 -0.21
39 6.2882 0.00 -0.04 0.00 0.25
40 7.1206 0.00 0.16 0.00 -0.23
41 7.1809 0.00 -0.05 0.00 0.32
42 7.2001 0.00 0.04 0.00 -0.19
43 7.2001 0.00 -0.08 0.00 -0.02
44 7.2002 0.00 0.10 0.00 0.22
45 7.2002 0.00 -0.03 0.00 -0.07
46 7.2221 0.00 0.19 0.00 0.01
47 7.4159 0.00 0.16 0.00 -0.07
48 8.0875 0.00 0.06 0.00 -0.21
49 8.1449 0.00 0.15 0.00 -0.13
50 8.1503 0.00 -0.31 0.00 -0.02
51 8.2458 0.00 -0.26 0.00 0.09
52 8.2459 0.00 -0.29 0.00 0.14
53 8.2459 0.00 0.08 0.00 -0.01
54 8.3085 0.00 0.18 0.00 0.35
55 8.3085 0.00 0.07 0.00 0.54
56 8.3086 0.00 0.04 0.00 0.16
57 8.3086 0.00 -0.17 0.00 0.06
58 8.3960 0.00 -0.11 0.00 -0.15
59 9.1195 0.00 -0.05 0.00 0.21
60 9.1195 0.00 0.41 0.00 0.02
61 9.1196 0.00 -0.11 0.00 -0.19
62 9.1389 0.00 -0.19 0.00 -0.11
63 9.1989 0.00 0.22 0.00 -0.19
64 9.2669 0.00 -0.02 0.00 -0.26
65 9.2669 0.00 0.21 0.00 -0.11
66 9.2669 0.00 -0.14 0.00 0.14
67 9.2669 0.00 -0.32 0.00 0.05
68 9.2697 0.00 -0.01 0.00 -0.28
69 9.2698 0.00 0.09 0.00 0.12
70 9.2698 0.00 0.13 0.00 -0.28
71 9.3462 0.00 -0.10 0.00 0.07
72 9.3736 0.00 -0.24 0.00 -0.25
73 9.3816 0.00 0.01 0.00 0.44
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.
15QW23 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 47.395 47.395 47.395 ecceobj 0.036 0.036 0.036 incobj 20.906 20.906 20.906 qmin 44.994 44.966 45.029 qmax 50.209 50.237 50.170 amean 47.504 47.504 47.504 amin 47.124 47.123 47.123 amax 47.888 47.889 47.889 emean 0.037 0.037 0.037 emin 0.027 0.027 0.026 emax 0.049 0.049 0.049 imean 19.278 19.278 19.278 imin 19.060 19.060 19.061 imax 19.511 19.509 19.513 excite_mean 0.332 0.332 0.332 fracstop 1.000 1.000 1.000 cjmean 3.004 3.004 3.004 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 184.6 184.4 184.7 kozaiamp 179.9 180.0 179.9