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: 13EJ154 # Created Sun Nov 24 02:09:20 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 89 observations of 89 # Arc: 19.00y # First observation: 1999/03/20 # Last observation: 2018/03/20 # Chi-squared of fit: 83.74 DOF: 172 RMS: 0.17 # Min/Max residuals: -0.58 0.51 # Exact a, adot, b, bdot, g, gdot: 1.418120E-05 1.866817E-02 -1.905705E-06 -1.952630E-03 2.149625E-02 1.512396E-03 # Covariance matrix: 1.8286E-13 -2.5242E-14 -2.9857E-15 1.7000E-15 -2.9729E-14 -4.5244E-14 -2.5242E-14 8.5613E-15 1.4636E-15 -8.2753E-16 1.0809E-14 2.2228E-14 -2.9857E-15 1.4636E-15 1.4935E-13 -9.2486E-15 2.0634E-15 4.0989E-15 1.7000E-15 -8.2753E-16 -9.2486E-15 7.1046E-16 -1.2643E-15 -2.3179E-15 -2.9729E-14 1.0809E-14 2.0634E-15 -1.2643E-15 7.8461E-14 3.0497E-14 -4.5244E-14 2.2228E-14 4.0989E-15 -2.3179E-15 3.0497E-14 6.2249E-14 # lat0 lon0 xBary yBary zBary JD0 -7.947292 162.457230 -0.289666 -0.133151 -0.952040 2451257.746938 # Heliocentric elements and errors Epoch: 2451258.5000 = 1999/03/21 Mean Anomaly: 128.32789 +/- 0.016 Argument of Peri: 94.65637 +/- 0.011 Long of Asc Node: 290.34173 +/- 0.000 Inclination: 9.78582 +/- 0.000 Eccentricity: 0.12094097 +/- 0.0000 Semi-Major Axis: 43.82590987 +/- 0.0019 Time of Perihelion: 2413482.7235 +/- 5.3 Perihelion: 38.52556166 +/- 0.0020 Aphelion: 49.12625808 +/- 0.0024 Period (y) 290.1380 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -44.92608456 +/- 0.0006 Ecliptic Y 13.90053688 +/- 0.0002 Ecliptic Z -6.43198505 +/- 0.0001 Ecliptic XDOT -0.00086793 +/- 0.0000 Ecliptic YDOT -0.00221107 +/- 0.0000 Ecliptic ZDOT -0.00027293 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.46517740 +/- 0.0005 Geocenter to KBO 46.51973483 +/- 0.0006 # Hcoef: 5.87
The following table shows the complete astrometric record for 13EJ154. 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 (13EJ154) followed by the observatory code and reference code for the source of the astrometry.
1999 03 20.246195 10 43 11.55 -00 27 52.3 13EJ154 645 C~2e9Z 1999 03 20.247024 10 43 11.55 -00 27 52.3 13EJ154 645 C~2e9Z 1999 03 20.249512 10 43 11.54 -00 27 52.3 13EJ154 645 C~2e9Z 1999 03 22.240814 10 43 03.92 -00 27 01.2 13EJ154 645 C~2e9Z 1999 03 22.241643 10 43 03.92 -00 27 01.2 13EJ154 645 C~2e9Z 1999 03 22.244131 10 43 03.91 -00 27 01.2 13EJ154 645 C~2e9Z 2000 02 12.376252 10 49 24.05 -01 12 16.5 13EJ154 645 C~2e9Z 2000 02 12.377081 10 49 24.05 -01 12 16.5 13EJ154 645 C~2e9Z 2000 02 12.379569 10 49 24.04 -01 12 16.5 13EJ154 645 C~2e9Z 2011 03 15.37152 11 28 24.849 -06 27 45.01 22.1G 13EJ154 F51 C~36nj 2011 03 30.36962 11 27 25.473 -06 21 13.62 23.5w 13EJ154 F51 C~1w3t 2011 03 30.38293 11 27 25.416 -06 21 13.21 23.6w 13EJ154 F51 C~1w3t 2011 03 30.39739 11 27 25.368 -06 21 12.76 23.4w 13EJ154 F51 C~1w3t 2011 03 30.41066 11 27 25.321 -06 21 12.13 23.7w 13EJ154 F51 C~1w3t 2011 12 04.59767 11 35 29.608 -07 01 57.63 23.1w 13EJ154 F51 C~1w3t 2011 12 04.60691 11 35 29.598 -07 01 57.71 23.2w 13EJ154 F51 C~1w3t 2011 12 04.61156 11 35 29.624 -07 01 57.92 23.0w 13EJ154 F51 C~1w3t 2012 03 02.46690 11 32 55.862 -07 01 15.68 22.2G 13EJ154 F51 C~36nj 2013 03 06.41764 11 36 23.445 -07 28 30.45 22.0w 13EJ154 F51 C~1w3t 2013 03 06.43222 11 36 23.347 -07 28 29.43 21.5w 13EJ154 F51 C~1w3t 2013 03 06.44685 11 36 23.322 -07 28 29.51 22.4w 13EJ154 F51 C~1w3t 2013 04 05.32982 11 34 25.323 -07 15 47.25 22.5w 13EJ154 F51 C~1w3t 2013 04 05.34902 11 34 25.256 -07 15 46.88 22.5w 13EJ154 F51 C~1w3t 2013 04 05.36338 11 34 25.195 -07 15 46.43 22.2w 13EJ154 F51 C~1w3t 2013 04 05.37298 11 34 25.182 -07 15 46.06 22.4w 13EJ154 F51 C~1w3t 2013 04 05.37782 11 34 25.157 -07 15 45.88 22.4w 13EJ154 F51 C~1w3t 2014 02 28.45928 11 40 30.433 -07 59 08.65 23.0w 13EJ154 F51 C~1w3t 2014 02 28.47135 11 40 30.377 -07 59 08.42 23.0w 13EJ154 F51 C~1w3t 2014 02 28.48342 11 40 30.326 -07 59 08.00 23.2w 13EJ154 F51 C~1w3t 2014 02 28.49553 11 40 30.272 -07 59 07.85 22.5w 13EJ154 F51 C~1w3t 2014 03 24.40427 11 38 54.765 -07 49 44.98 22.5w 13EJ154 F51 C~1w3t 2014 03 24.41657 11 38 54.727 -07 49 44.48 22.3w 13EJ154 F51 C~1w3t 2014 03 24.42886 11 38 54.686 -07 49 44.85 22.5w 13EJ154 F51 C~1w3t 2014 03 24.44118 11 38 54.610 -07 49 44.22 22.5w 13EJ154 F51 C~1w3t 2014 04 28.30816 11 36 53.481 -07 34 14.18 22.3G 13EJ154 F51 C~36nj 2014 04 28.33273 11 36 53.412 -07 34 13.85 22.4G 13EJ154 F51 C~36nj 2014 04 28.34503 11 36 53.390 -07 34 13.69 22.6G 13EJ154 F51 C~36nj 2015 02 24.46373 11 44 29.290 -08 28 45.32 22.5G 13EJ154 F51 C~36nj 2015 02 24.47804 11 44 29.222 -08 28 44.86 22.7G 13EJ154 F51 C~36nj 2015 02 24.49231 11 44 29.175 -08 28 44.68 22.8G 13EJ154 F51 C~36nj 2015 02 25.46992 11 44 25.503 -08 28 27.08 23.6G 13EJ154 F51 C~36nj 2015 02 25.48388 11 44 25.499 -08 28 26.75 22.4G 13EJ154 F51 C~36nj 2015 02 25.49784 11 44 25.373 -08 28 26.62 21.8G 13EJ154 F51 C~36nj 2015 02 25.51173 11 44 25.350 -08 28 26.52 22.7G 13EJ154 F51 C~36nj 2015 03 22.40187 11 42 46.716 -08 19 06.39 22.4G 13EJ154 F51 C~36nj 2015 03 22.41574 11 42 46.662 -08 19 05.72 22.5G 13EJ154 F51 C~36nj 2015 03 22.42957 11 42 46.615 -08 19 05.65 22.6G 13EJ154 F51 C~36nj 2015 03 22.44339 11 42 46.555 -08 19 05.14 23.1G 13EJ154 F51 C~36nj 2015 03 23.43068 11 42 42.601 -08 18 39.74 22.4G 13EJ154 F51 C~36nj 2015 03 23.44460 11 42 42.534 -08 18 39.70 22.1G 13EJ154 F51 C~36nj 2015 03 23.45847 11 42 42.488 -08 18 39.27 22.2G 13EJ154 F51 C~36nj 2015 03 23.47230 11 42 42.420 -08 18 38.71 21.8G 13EJ154 F51 C~36nj 2015 05 17.27516 11 39 53.768 -07 55 19.88 22.3G 13EJ154 F51 C~36nj 2016 01 09.59485 11 50 10.352 -09 01 38.75 23.3G 13EJ154 F51 C~36nj 2016 01 09.60567 11 50 10.339 -09 01 38.70 23.0G 13EJ154 F51 C~36nj 2016 01 09.61626 11 50 10.322 -09 01 38.63 22.4G 13EJ154 F51 C~36nj 2016 01 09.62693 11 50 10.304 -09 01 38.67 22.8G 13EJ154 F51 C~36nj 2016 01 16.65827 11 50 00.920 -09 02 08.81 22.4G 13EJ154 F51 C~36nj 2016 03 01.47213 11 47 50.364 -08 55 03.06 22.5G 13EJ154 F51 C~36nj 2016 03 11.42634 11 47 11.077 -08 51 28.70 22.5G 13EJ154 F51 C~36nj 2016 04 02.32512 11 45 43.915 -08 42 11.95 22.4G 13EJ154 F51 C~36nj 2016 04 02.33760 11 45 43.858 -08 42 11.44 22.5G 13EJ154 F51 C~36nj 2016 04 02.35009 11 45 43.807 -08 42 11.02 22.9G 13EJ154 F51 C~36nj 2016 04 02.36256 11 45 43.781 -08 42 10.76 22.8G 13EJ154 F51 C~36nj 2016 04 29.31695 11 44 13.107 -08 30 07.98 23.1G 13EJ154 F51 C~36nj 2017 02 17.52019 11 52 18.061 -09 26 27.84 22.6G 13EJ154 F51 C~36nj 2017 03 21.39374 11 50 15.311 -09 15 35.78 22.6G 13EJ154 F51 C~36nj 2017 03 21.40494 11 50 15.258 -09 15 35.39 23.0G 13EJ154 F51 C~36nj 2017 03 21.41615 11 50 15.231 -09 15 35.44 23.2G 13EJ154 F51 C~36nj 2017 03 21.42736 11 50 15.171 -09 15 35.19 22.6G 13EJ154 F51 C~36nj 2017 03 31.36336 11 49 35.656 -09 11 15.98 23.1G 13EJ154 F51 C~36nj 2017 03 31.37522 11 49 35.618 -09 11 15.47 22.5G 13EJ154 F51 C~36nj 2017 03 31.38711 11 49 35.578 -09 11 15.32 22.9G 13EJ154 F51 C~36nj 2017 03 31.39898 11 49 35.516 -09 11 14.92 22.7G 13EJ154 F51 C~36nj 2017 04 23.31246 11 48 13.766 -09 00 53.62 21.4G 13EJ154 F51 C~36nj 2017 04 25.32056 11 48 07.605 -09 00 00.29 23.0G 13EJ154 F51 C~36nk 2017 04 25.33103 11 48 07.559 -09 00 00.18 22.3G 13EJ154 F51 C~36nk 2017 04 25.34148 11 48 07.525 -08 59 59.76 22.8G 13EJ154 F51 C~36nk 2017 04 25.35198 11 48 07.498 -08 59 59.61 22.9G 13EJ154 F51 C~36nk 2017 12 30.58619 11 57 36.111 -09 54 50.92 22.2G 13EJ154 F51 C~36nk 2017 12 30.59716 11 57 36.112 -09 54 51.23 23.1G 13EJ154 F51 C~36nk 2017 12 30.60814 11 57 36.108 -09 54 51.37 22.7G 13EJ154 F51 C~36nk 2017 12 30.61913 11 57 36.102 -09 54 51.37 22.9G 13EJ154 F51 C~36nk 2017 12 31.59907 11 57 35.912 -09 55 03.35 22.3G 13EJ154 F51 C~36nk 2017 12 31.61128 11 57 35.858 -09 55 03.40 22.3G 13EJ154 F51 C~36nk 2017 12 31.62352 11 57 35.904 -09 55 03.76 22.4G 13EJ154 F51 C~36nk 2017 12 31.63575 11 57 35.893 -09 55 03.56 22.9G 13EJ154 F51 C~36nk 2018 03 20.44215 11 54 03.486 -09 43 57.36 22.8G 13EJ154 F51 C~36nk 2018 03 20.45396 11 54 03.445 -09 43 57.14 22.5G 13EJ154 F51 C~36nk
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 0.12
2 0.0000 0.00 -0.00 0.00 0.10
3 0.0000 0.00 -0.00 0.00 0.04
4 0.0055 0.00 -0.08 0.00 0.09
5 0.0055 0.00 -0.03 0.00 0.07
6 0.0055 0.00 -0.04 0.00 0.00
7 0.9011 0.00 0.00 0.00 -0.24
8 0.9011 0.00 0.05 0.00 -0.25
9 0.9011 0.00 0.05 0.00 -0.30
10 11.9867 0.00 0.37 0.00 0.06
11 12.0277 0.00 0.15 0.00 -0.19
12 12.0278 0.00 0.08 0.00 -0.14
13 12.0278 0.00 0.20 0.00 -0.08
14 12.0278 0.00 0.27 0.00 0.19
15 12.7101 0.00 -0.07 0.00 0.18
16 12.7101 0.00 -0.42 0.00 0.31
17 12.7101 0.00 -0.13 0.00 0.20
18 12.9534 0.00 0.05 0.00 -0.06
19 13.9635 0.00 0.45 0.00 -0.33
20 13.9635 0.00 -0.13 0.00 0.36
21 13.9636 0.00 0.39 0.00 -0.05
22 14.0454 0.00 -0.13 0.00 0.10
23 14.0455 0.00 -0.05 0.00 -0.05
24 14.0455 0.00 -0.16 0.00 0.01
25 14.0455 0.00 0.19 0.00 0.11
26 14.0455 0.00 0.09 0.00 0.16
27 14.9465 0.00 0.12 0.00 -0.02
28 14.9465 0.00 -0.01 0.00 -0.04
29 14.9466 0.00 -0.06 0.00 0.14
30 14.9466 0.00 -0.15 0.00 0.05
31 15.0121 0.00 -0.08 0.00 0.32
32 15.0121 0.00 0.10 0.00 0.50
33 15.0121 0.00 0.23 0.00 -0.19
34 15.0122 0.00 -0.16 0.00 0.12
35 15.1076 0.00 -0.10 0.00 0.26
36 15.1077 0.00 -0.11 0.00 -0.03
37 15.1077 0.00 0.08 0.00 -0.18
38 15.9349 0.00 -0.06 0.00 -0.06
39 15.9349 0.00 -0.26 0.00 0.14
40 15.9350 0.00 -0.15 0.00 0.06
41 15.9376 0.00 -0.23 0.00 -0.14
42 15.9377 0.00 0.51 0.00 -0.07
43 15.9377 0.00 -0.58 0.00 -0.20
44 15.9378 0.00 -0.12 0.00 -0.35
45 16.0059 0.00 -0.09 0.00 -0.07
46 16.0059 0.00 -0.05 0.00 0.24
47 16.0060 0.00 0.09 0.00 -0.04
48 16.0060 0.00 0.04 0.00 0.11
49 16.0087 0.00 0.04 0.00 0.07
50 16.0088 0.00 -0.11 0.00 -0.25
51 16.0088 0.00 0.05 0.00 -0.18
52 16.0088 0.00 -0.13 0.00 0.02
53 16.1589 0.00 0.05 0.00 -0.19
54 16.8086 0.00 0.07 0.00 -0.07
55 16.8087 0.00 0.06 0.00 0.05
56 16.8087 0.00 -0.01 0.00 0.18
57 16.8087 0.00 -0.10 0.00 0.21
58 16.8280 0.00 -0.07 0.00 -0.17
59 16.9507 0.00 -0.03 0.00 -0.02
60 16.9779 0.00 0.01 0.00 0.13
61 17.0379 0.00 -0.04 0.00 -0.13
62 17.0379 0.00 -0.17 0.00 0.05
63 17.0379 0.00 -0.20 0.00 0.13
64 17.0380 0.00 0.14 0.00 0.05
65 17.1118 0.00 -0.17 0.00 -0.00
66 17.9172 0.00 -0.25 0.00 -0.47
67 18.0045 0.00 0.04 0.00 0.08
68 18.0045 0.00 -0.07 0.00 0.19
69 18.0046 0.00 0.22 0.00 -0.14
70 18.0046 0.00 0.01 0.00 -0.18
71 18.0318 0.00 -0.07 0.00 -0.10
72 18.0318 0.00 0.07 0.00 0.10
73 18.0319 0.00 0.18 0.00 -0.07
74 18.0319 0.00 -0.04 0.00 0.01
75 18.0946 0.00 -0.16 0.00 -0.04
76 18.1001 0.00 0.12 0.00 0.10
77 18.1002 0.00 -0.08 0.00 -0.07
78 18.1002 0.00 -0.11 0.00 0.08
79 18.1002 0.00 -0.03 0.00 -0.05
80 18.7826 0.00 0.07 0.00 -0.02
81 18.7826 0.00 0.12 0.00 -0.20
82 18.7826 0.00 0.10 0.00 -0.20
83 18.7827 0.00 0.05 0.00 -0.06
84 18.7854 0.00 0.22 0.00 0.01
85 18.7854 0.00 -0.53 0.00 0.10
86 18.7854 0.00 0.22 0.00 -0.11
87 18.7855 0.00 0.11 0.00 0.24
88 19.0012 0.00 -0.01 0.00 0.07
89 19.0013 0.00 0.11 0.00 -0.01
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.
13EJ154 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.903 43.903 43.903 ecceobj 0.120 0.120 0.120 incobj 9.776 9.776 9.776 qmin 38.185 38.184 38.182 qmax 50.267 50.259 50.277 amean 44.073 44.073 44.073 amin 43.708 43.708 43.707 amax 44.474 44.472 44.473 emean 0.116 0.116 0.116 emin 0.103 0.103 0.103 emax 0.131 0.131 0.131 imean 11.538 11.539 11.538 imin 10.890 10.890 10.890 imax 12.093 12.093 12.093 excite_mean 0.231 0.231 0.231 fracstop 1.000 1.000 1.000 cjmean 3.037 3.037 3.037 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 178.4 178.4 178.4 kozaiamp 180.0 180.0 180.0