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: 13YA173
# Created Wed May 8 01:15:41 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 84 observations of 84
# Arc: 9.90y
# First observation: 2013/05/03
# Last observation: 2023/03/28
# Chi-squared of fit: 83.09 DOF: 162 RMS: 0.18
# Min/Max residuals: -0.52 0.55
# Exact a, adot, b, bdot, g, gdot:
2.398334E-05 9.170610E-02 -1.925509E-05 -7.042075E-02 6.136449E-02 5.592687E-03
# Covariance matrix:
1.1840E-13 -2.7189E-14 -2.8686E-14 1.3019E-14 -3.1078E-14 -1.8390E-14
-2.7189E-14 1.7852E-14 2.2528E-14 -1.2846E-14 -8.0071E-15 1.3353E-14
-2.8686E-14 2.2528E-14 8.3508E-14 -2.6055E-14 -9.0850E-15 1.8761E-14
1.3019E-14 -1.2846E-14 -2.6055E-14 1.2004E-14 8.2356E-15 -1.0491E-14
-3.1078E-14 -8.0071E-15 -9.0850E-15 8.2356E-15 4.1005E-14 -4.1161E-15
-1.8390E-14 1.3353E-14 1.8761E-14 -1.0491E-14 -4.1161E-15 1.1206E-14
# lat0 lon0 xBary yBary zBary JD0
2.003398 102.951348 -0.875550 -0.017586 0.503667 2456415.759600
# Heliocentric elements and errors
Epoch: 2456416.5000 = 2013/05/04
Mean Anomaly: 6.19352 +/- 0.000
Argument of Peri: 159.25379 +/- 0.000
Long of Asc Node: 288.78730 +/- 0.000
Inclination: 37.77809 +/- 0.000
Eccentricity: 0.43661891 +/- 0.0000
Semi-Major Axis: 27.68915120 +/- 0.0009
Time of Perihelion: 2455500.9162 +/- 0.1
Perihelion: 15.59954422 +/- 0.0007
Aphelion: 39.77875817 +/- 0.0013
Period (y) 145.7044 +/- 0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -4.39028680 +/- 0.0000
Ecliptic Y 15.18688472 +/- 0.0001
Ecliptic Z 0.56940371 +/- 0.0000
Ecliptic XDOT -0.00407433 +/- 0.0000
Ecliptic YDOT -0.00056685 +/- 0.0000
Ecliptic ZDOT -0.00313112 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 15.81894140 +/- 0.0000
Geocenter to KBO 16.29608590 +/- 0.0001
# Hcoef: 10.59
The following table shows the complete astrometric record for 13YA173. 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 (13YA173) followed by the observatory code and reference code for the source of the astrometry.
2013 05 03.258822 06 57 08.426 +24 48 09.77 22.6G 13YA173 F51 C~7AzH 2013 12 30.378631 07 27 40.216 +21 11 30.11 23.0G 13YA173 F51 C~7AzH 2013 12 30.408945 07 27 39.799 +21 11 29.39 22.5G 13YA173 F51 C~7AzH 2013 12 30.424181 07 27 39.594 +21 11 29.54 22.3G 13YA173 F51 C~7AzH 2014 01 26.291066 07 21 41.026 +21 04 15.29 22.5G 13YA173 F51 C~7AzH 2014 01 26.303102 07 21 40.826 +21 04 14.88 22.4G 13YA173 F51 C~7AzH 2014 01 26.318102 07 21 40.652 +21 04 14.42 21.5G 13YA173 F51 C~7AzH 2014 01 26.344336 07 21 40.337 +21 04 14.18 21.8G 13YA173 F51 C~7AzH 2014 10 02.599847 07 53 16.048 +17 09 06.62 22.3G 13YA173 F51 C~7AzH 2014 10 02.609235 07 53 16.118 +17 09 05.96 23.4G 13YA173 F51 C~7AzH 2014 11 26.453384 07 53 25.965 +16 17 49.05 21.8G 13YA173 F51 C~7AzH 2014 11 26.466044 07 53 25.894 +16 17 48.33 22.8G 13YA173 F51 C~7AzH 2015 01 21.332558 07 43 08.590 +15 59 11.90 22.8G 13YA173 F51 C~7AzH 2015 01 21.345052 07 43 08.415 +15 59 11.97 22.4G 13YA173 F51 C~7AzH 2015 01 21.357553 07 43 08.253 +15 59 12.09 22.2G 13YA173 F51 C~7AzH 2015 01 21.370069 07 43 08.093 +15 59 11.91 22.5G 13YA173 F51 C~7AzH 2015 01 21.454770 07 43 06.986 +15 59 11.27 21.7G 13YA173 F51 C~7AzH 2015 01 21.467594 07 43 06.823 +15 59 11.32 22.0G 13YA173 F51 C~7AzH 2015 01 21.480412 07 43 06.648 +15 59 10.98 22.3G 13YA173 F51 C~7AzH 2015 01 21.493346 07 43 06.485 +15 59 10.79 21.9G 13YA173 F51 C~7AzH 2015 02 20.240315 07 37 24.769 +15 56 34.50 22.0G 13YA173 F51 C~7AzH 2015 02 22.253908 07 37 06.269 +15 56 23.73 22.7G 13YA173 F51 C~7AzH 2015 03 18.298230 07 34 32.649 +15 53 05.70 23.4G 13YA173 F51 C~7AzH 2015 10 14.592125 08 11 27.588 +12 07 59.61 23.0G 13YA173 F51 C~7AzH 2016 01 04.574959 08 05 15.295 +10 58 57.37 22.6G 13YA173 F51 C~7AzH 2016 01 12.341369 08 03 40.806 +10 57 33.86 22.7G 13YA173 F51 C~7AzH 2016 01 12.353179 08 03 40.677 +10 57 34.08 23.2G 13YA173 F51 C~7AzH 2016 01 12.365032 08 03 40.499 +10 57 33.65 22.3G 13YA173 F51 C~7AzH 2016 01 12.376792 08 03 40.353 +10 57 33.93 22.5G 13YA173 F51 C~7AzH 2016 01 31.319607 07 59 45.522 +10 57 03.03 22.6G 13YA173 F51 C~7AzH 2016 01 31.331568 07 59 45.381 +10 57 03.31 22.6G 13YA173 F51 C~7AzH 2016 01 31.343543 07 59 45.217 +10 57 03.30 22.2G 13YA173 F51 C~7AzH 2016 01 31.355713 07 59 45.075 +10 57 03.19 22.3G 13YA173 F51 C~7AzH 2016 02 12.285278 07 57 26.826 +10 58 14.06 22.2G 13YA173 F51 C~7AzH 2016 02 12.297238 07 57 26.707 +10 58 14.19 22.4G 13YA173 F51 C~7AzH 2016 02 12.309212 07 57 26.581 +10 58 13.96 22.6G 13YA173 F51 C~7AzH 2016 02 12.321303 07 57 26.441 +10 58 14.47 22.5G 13YA173 F51 C~7AzH 2016 11 28.584134 08 27 26.936 +06 28 41.36 22.7G 13YA173 F51 C~7AzH 2017 01 29.447575 08 17 14.681 +06 03 56.17 21.8G 13YA173 F51 C~7AzH 2017 01 29.469815 08 17 14.412 +06 03 56.92 21.5G 13YA173 F51 C~7AzH 2017 01 29.480904 08 17 14.280 +06 03 56.62 22.4G 13YA173 F51 C~7AzH 2017 03 16.269219 08 10 00.780 +06 18 37.09 22.9G 13YA173 F51 C~7AzH 2017 12 23.492095 08 40 04.870 +01 30 39.47 22.9G 13YA173 F51 C~7AzH 2017 12 23.504742 08 40 04.761 +01 30 39.09 22.3G 13YA173 F51 C~7AzH 2017 12 23.505492 08 40 04.770 +01 30 38.78 22.8G 13YA173 F51 C~7AzH 2017 12 23.518109 08 40 04.644 +01 30 38.15 23.4G 13YA173 F51 C~7AzH 2017 12 23.518858 08 40 04.629 +01 30 38.32 22.8G 13YA173 F51 C~7AzH 2017 12 23.531543 08 40 04.499 +01 30 37.93 22.8G 13YA173 F51 C~7AzH 2017 12 23.532296 08 40 04.510 +01 30 37.74 22.2G 13YA173 F51 C~7AzH 2018 01 10.452866 08 37 03.517 +01 22 54.31 22.4G 13YA173 F51 C~7AzH 2018 01 10.466984 08 37 03.372 +01 22 54.07 22.7G 13YA173 F51 C~7AzH 2018 01 10.481102 08 37 03.198 +01 22 54.10 23.1G 13YA173 F51 C~7AzH 2018 01 10.495321 08 37 03.042 +01 22 54.00 23.0G 13YA173 F51 C~7AzH 2018 02 11.410540 08 30 56.617 +01 26 03.56 23.3G 13YA173 F51 C~7AzH 2018 11 07.619881 08 57 40.615 -01 53 49.56 22.9G 13YA173 F52 C~7AzH 2018 11 07.637816 08 57 40.653 -01 53 51.24 23.4G 13YA173 F52 C~7AzH 2018 11 07.646392 08 57 40.649 -01 53 52.18 23.3G 13YA173 F52 C~7AzH 2018 12 15.585785 08 55 55.828 -02 46 44.18 23.3G 13YA173 F51 C~7AzH 2020 01 19.499656 09 04 56.896 -07 17 04.48 22.0G 13YA173 F51 C~7AzH 2020 01 19.512880 09 04 56.793 -07 17 05.10 23.5G 13YA173 F51 C~7AzH 2020 01 19.526071 09 04 56.651 -07 17 04.87 23.3G 13YA173 F51 C~7AzH 2020 01 19.539278 09 04 56.501 -07 17 05.13 22.8G 13YA173 F51 C~7AzH 2020 01 25.484173 09 03 52.380 -07 17 34.50 23.3G 13YA173 F52 C~7AzH 2020 01 26.431696 09 03 42.014 -07 17 33.36 23.1G 13YA173 F52 C~7AzH 2020 01 29.442156 09 03 08.876 -07 17 21.48 22.3G 13YA173 F51 C~7AzH 2020 01 29.454410 09 03 08.743 -07 17 21.12 23.7G 13YA173 F51 C~7AzH 2020 01 29.466750 09 03 08.587 -07 17 21.05 22.8G 13YA173 F51 C~7AzH 2020 03 23.322502 08 54 39.307 -06 43 08.92 24.3G 13YA173 F51 C~7AzH 2020 12 25.614588 09 22 15.879 -10 57 39.07 23.9G 13YA173 F51 C~7AzH 2021 01 17.426847 09 18 57.074 -11 12 18.55 23.3G 13YA173 F51 C~7AzH 2021 02 09.391482 09 14 53.022 -11 11 17.79 23.3G 13YA173 F51 C~7AzH 2021 02 12.396842 09 14 20.603 -11 10 04.60 22.8G 13YA173 F51 C~7AzH 2021 02 12.399425 09 14 20.586 -11 10 04.71 23.4G 13YA173 F51 C~7AzH 2021 02 12.409847 09 14 20.457 -11 10 04.69 23.0G 13YA173 F51 C~7AzH 2021 02 12.412426 09 14 20.435 -11 10 04.06 23.6G 13YA173 F51 C~7AzH 2021 02 12.422823 09 14 20.289 -11 10 03.90 23.0G 13YA173 F51 C~7AzH 2021 02 12.425398 09 14 20.277 -11 10 03.96 23.1G 13YA173 F51 C~7AzH 2021 02 12.435804 09 14 20.182 -11 10 03.97 23.9G 13YA173 F51 C~7AzH 2021 02 12.438386 09 14 20.151 -11 10 03.69 23.5G 13YA173 F51 C~7AzH 2021 04 07.312862 09 07 09.894 -10 22 27.18 24.1G 13YA173 F51 C~7AzH 2022 02 04.395662 09 29 14.199 -14 53 43.57 22.2G 13YA173 F52 C~7AzH 2022 02 04.408844 09 29 14.067 -14 53 43.21 23.1G 13YA173 F52 C~7AzH 2022 03 01.333655 09 24 54.720 -14 41 13.40 22.7G 13YA173 F52 C~7AzH 2023 03 28.255749 09 34 13.750 -17 40 19.55 23.9G 13YA173 F51 C~7AzH
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 -0.05 0.00 0.23
2 0.6602 0.00 0.04 0.00 -0.06
3 0.6602 0.00 -0.10 0.00 -0.30
4 0.6603 0.00 -0.10 0.00 0.09
5 0.7338 0.00 0.21 0.00 0.18
6 0.7339 0.00 -0.45 0.00 -0.03
7 0.7339 0.00 -0.14 0.00 -0.25
8 0.7340 0.00 0.24 0.00 -0.05
9 1.4164 0.00 -0.02 0.00 -0.06
10 1.4164 0.00 0.06 0.00 -0.05
11 1.5666 0.00 -0.35 0.00 0.09
12 1.5666 0.00 -0.12 0.00 -0.17
13 1.7196 0.00 0.11 0.00 -0.15
14 1.7196 0.00 -0.06 0.00 0.00
15 1.7196 0.00 -0.04 0.00 0.21
16 1.7197 0.00 0.02 0.00 0.11
17 1.7199 0.00 0.07 0.00 0.07
18 1.7199 0.00 0.14 0.00 0.21
19 1.7200 0.00 0.04 0.00 -0.03
20 1.7200 0.00 0.13 0.00 -0.13
21 1.8015 0.00 -0.13 0.00 -0.11
22 1.8070 0.00 0.03 0.00 -0.06
23 1.8728 0.00 0.09 0.00 0.09
24 2.4486 0.00 -0.12 0.00 -0.30
25 2.6730 0.00 0.07 0.00 -0.04
26 2.6943 0.00 0.10 0.00 -0.20
27 2.6943 0.00 0.39 0.00 0.11
28 2.6943 0.00 -0.05 0.00 -0.24
29 2.6944 0.00 -0.02 0.00 0.13
30 2.7462 0.00 0.02 0.00 0.01
31 2.7463 0.00 0.11 0.00 0.25
32 2.7463 0.00 -0.14 0.00 0.19
33 2.7463 0.00 -0.02 0.00 0.03
34 2.7790 0.00 -0.18 0.00 0.08
35 2.7790 0.00 0.04 0.00 0.11
36 2.7791 0.00 0.15 0.00 -0.21
37 2.7791 0.00 0.07 0.00 0.20
38 3.5738 0.00 0.12 0.00 -0.13
39 3.7432 0.00 -0.08 0.00 -0.02
40 3.7432 0.00 -0.06 0.00 0.55
41 3.7433 0.00 -0.02 0.00 0.16
42 3.8686 0.00 -0.06 0.00 0.09
43 4.6413 0.00 -0.02 0.00 0.07
44 4.6413 0.00 0.07 0.00 0.17
45 4.6413 0.00 0.31 0.00 -0.11
46 4.6414 0.00 0.15 0.00 -0.26
47 4.6414 0.00 0.03 0.00 -0.06
48 4.6414 0.00 -0.18 0.00 0.04
49 4.6414 0.00 0.09 0.00 -0.12
50 4.6905 0.00 0.05 0.00 -0.05
51 4.6905 0.00 0.26 0.00 -0.10
52 4.6905 0.00 0.04 0.00 0.12
53 4.6906 0.00 0.10 0.00 0.21
54 4.7780 0.00 -0.29 0.00 0.17
55 5.5150 0.00 -0.28 0.00 -0.23
56 5.5151 0.00 -0.04 0.00 -0.05
57 5.5151 0.00 -0.26 0.00 -0.10
58 5.6190 0.00 -0.20 0.00 -0.06
59 6.7139 0.00 -0.52 0.00 0.26
60 6.7139 0.00 0.08 0.00 -0.22
61 6.7139 0.00 0.09 0.00 0.13
62 6.7140 0.00 -0.02 0.00 0.00
63 6.7303 0.00 -0.21 0.00 -0.43
64 6.7328 0.00 -0.21 0.00 -0.09
65 6.7411 0.00 0.13 0.00 -0.35
66 6.7411 0.00 0.20 0.00 -0.07
67 6.7412 0.00 -0.06 0.00 -0.08
68 6.8886 0.00 -0.22 0.00 -0.02
69 7.6478 0.00 0.29 0.00 -0.19
70 7.7102 0.00 0.23 0.00 -0.17
71 7.7731 0.00 -0.37 0.00 0.01
72 7.7813 0.00 0.15 0.00 0.29
73 7.7814 0.00 0.32 0.00 0.11
74 7.7814 0.00 0.09 0.00 -0.14
75 7.7814 0.00 0.19 0.00 0.42
76 7.7814 0.00 -0.29 0.00 0.30
77 7.7814 0.00 -0.05 0.00 0.18
78 7.7815 0.00 0.23 0.00 -0.11
79 7.7815 0.00 0.19 0.00 0.10
80 7.9290 0.00 -0.03 0.00 -0.03
81 8.7588 0.00 -0.12 0.00 -0.16
82 8.7588 0.00 0.04 0.00 0.08
83 8.8270 0.00 0.10 0.00 -0.23
84 9.9001 0.00 0.03 0.00 0.18
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.
13YA173 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 27.744 27.744 27.744 ecceobj 0.436 0.436 0.436 incobj 37.804 37.804 37.804 qmin 15.035 15.042 15.034 qmax 40.276 40.333 40.264 amean 27.516 27.475 27.481 amin 27.287 26.748 27.229 amax 27.903 27.766 28.390 emean 0.430 0.419 0.423 emin 0.372 0.340 0.361 emax 0.453 0.454 0.453 imean 39.347 39.688 39.550 imin 38.634 38.626 38.628 imax 41.195 41.964 41.513 excite_mean 0.766 0.764 0.765 fracstop 0.062 0.073 0.066 cjmean 2.433 2.435 2.434 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 193.9 196.8 193.7 kozaiamp 30.2 34.9 27.4