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: 672947 # Created Tue Apr 1 01:07:48 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 106 observations of 106 # Arc: 12.09y # First observation: 2013/01/21 # Last observation: 2025/02/22 # Chi-squared of fit: 45.86 DOF: 206 RMS: 0.12 # Min/Max residuals: -0.34 0.40 # Exact a, adot, b, bdot, g, gdot: 2.168696E-05 4.135933E-02 -9.182553E-07 -2.184667E-03 3.016330E-02 -5.136768E-03 # 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 -10.319942 111.516378 -0.171021 -0.173286 -0.952025 2456313.970718 # Heliocentric elements and errors Epoch: 2456314.5000 = 2013/01/22 Mean Anomaly: 357.41714 +/- 0.000 Argument of Peri: 270.85185 +/- 0.000 Long of Asc Node: 218.13423 +/- 0.000 Inclination: 10.44051 +/- 0.000 Eccentricity: 0.66415040 +/- 0.0000 Semi-Major Axis: 99.80090560 +/- 0.0000 Time of Perihelion: 2458927.2524 +/- 0.0 Perihelion: 33.51809404 +/- 0.0000 Aphelion: 166.08371716 +/- 0.0000 Period (y) 997.0339 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -12.47619671 +/- 0.0000 Ecliptic Y 31.18330721 +/- 0.0000 Ecliptic Z -5.93921128 +/- 0.0000 Ecliptic XDOT -0.00331738 +/- 0.0000 Ecliptic YDOT -0.00183554 +/- 0.0000 Ecliptic ZDOT -0.00011143 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.10768471 +/- 0.0000 Geocenter to KBO 33.15299621 +/- 0.0000 # Hcoef: 6.54
The following table shows the complete astrometric record for 672947. 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 (672947) followed by the observatory code and reference code for the source of the astrometry.
2013 01 21.46994 07 26 25.888 +11 31 11.72 22.1G 672947 F51 C~2kRF 2013 01 21.48288 07 26 25.818 +11 31 11.80 22.1G 672947 F51 C~2kRF 2014 12 18.57381 07 48 42.165 +10 25 32.89 22.0r 672947 F51 C~1vXz 2014 12 18.58490 07 48 42.107 +10 25 33.01 21.8r 672947 F51 C~1vXz 2014 12 18.59598 07 48 42.066 +10 25 32.70 22.1r 672947 F51 C~1vXz 2015 01 21.45551 07 45 36.276 +10 30 56.45 22.0G 672947 F51 C~2lVn 2015 01 21.46834 07 45 36.194 +10 30 56.92 21.7G 672947 F51 C~2lVn 2015 01 21.49412 07 45 36.043 +10 30 57.45 20.9G 672947 F51 C~2lVn 2015 01 21.49688 07 45 36.029 +10 30 57.25 22.0G 672947 F51 C~2lVn 2015 02 18.23747 07 43 11.692 +10 39 52.24 22.0w 672947 F51 C~1vXz 2015 02 18.24951 07 43 11.635 +10 39 52.24 22.2w 672947 F51 C~1vXz 2015 02 18.26148 07 43 11.570 +10 39 52.30 22.3w 672947 F51 C~1vXz 2015 02 19.25104 07 43 07.254 +10 40 13.99 22.2w 672947 F51 C~1vXz 2015 02 19.26307 07 43 07.184 +10 40 14.05 21.9w 672947 F51 C~1vXz 2015 02 19.27520 07 43 07.134 +10 40 14.39 22.1w 672947 F51 C~1vXz 2015 03 18.29472 07 41 42.898 +10 49 59.02 21.7w 672947 F51 C~1vXz 2015 03 18.30729 07 41 42.893 +10 49 59.30 21.9w 672947 F51 C~1vXz 2015 03 18.31964 07 41 42.864 +10 49 59.39 21.9w 672947 F51 C~1vXz 2015 03 18.33208 07 41 42.840 +10 49 59.70 22.0w 672947 F51 C~1vXz 2015 03 19.29874 07 41 41.228 +10 50 19.50 22.4G 672947 F51 C~2lVn 2015 03 19.31121 07 41 41.203 +10 50 19.70 21.9G 672947 F51 C~2lVn 2015 03 19.32361 07 41 41.187 +10 50 20.09 22.2G 672947 F51 C~2lVn 2015 03 19.33605 07 41 41.154 +10 50 20.35 22.0G 672947 F51 C~2lVn 2016 01 12.34072 07 56 07.234 +09 56 27.97 21.8G 672947 F51 C~2kRF 2016 01 12.35253 07 56 07.168 +09 56 28.29 21.7G 672947 F51 C~2kRF 2016 01 12.36436 07 56 07.090 +09 56 28.31 21.9G 672947 F51 C~2kRF 2016 01 12.37615 07 56 07.024 +09 56 28.58 22.2G 672947 F51 C~2kRF 2016 01 31.31961 07 54 19.485 +10 01 42.87 21.7G 672947 F51 C~2kRF 2016 01 31.33157 07 54 19.421 +10 01 43.21 22.1G 672947 F51 C~2kRF 2016 01 31.34354 07 54 19.345 +10 01 43.53 21.5G 672947 F51 C~2kRF 2016 01 31.35571 07 54 19.282 +10 01 43.74 21.7G 672947 F51 C~2kRF 2016 11 10.57635 08 09 36.018 +09 24 29.36 21.9G 672947 F51 C~2kRF 2016 11 10.58800 08 09 36.012 +09 24 29.13 21.9G 672947 F51 C~2kRF 2016 11 10.59966 08 09 35.997 +09 24 28.91 21.8G 672947 F51 C~2kRF 2016 11 10.61123 08 09 35.996 +09 24 28.86 21.8G 672947 F51 C~2kRF 2017 01 26.37361 08 04 21.374 +09 27 04.09 21.7G 672947 F51 C~2kRF 2017 01 26.38443 08 04 21.314 +09 27 04.53 21.9G 672947 F51 C~2kRF 2017 01 26.39521 08 04 21.255 +09 27 04.56 21.9G 672947 F51 C~2kRF 2017 01 26.40606 08 04 21.198 +09 27 04.79 21.6G 672947 F51 C~2kRF 2017 02 03.45822 08 03 36.351 +09 29 47.54 22.1G 672947 F51 C~2kRF 2017 02 03.46964 08 03 36.296 +09 29 47.68 21.8G 672947 F51 C~2kRF 2017 02 03.48101 08 03 36.213 +09 29 48.04 22.3G 672947 F51 C~2kRF 2017 02 03.49238 08 03 36.174 +09 29 48.24 22.2G 672947 F51 C~2kRF 2017 11 22.54741 08 18 48.754 +08 47 17.66 22.3G 672947 F51 C~2kRF 2017 11 22.56902 08 18 48.714 +08 47 17.24 22.4G 672947 F51 C~2kRF 2017 11 22.57993 08 18 48.689 +08 47 17.12 22.0G 672947 F51 C~2kRF 2017 12 20.47225 08 17 18.285 +08 45 08.49 21.9R 672947 G37 C~4Num 2017 12 20.51363 08 17 18.081 +08 45 08.71 672947 G37 C~4Num 2017 12 24.44980 08 16 59.955 +08 45 24.69 21.8G 672947 F51 C~2kRF 2017 12 24.46135 08 16 59.897 +08 45 24.72 22.4G 672947 F51 C~2kRF 2017 12 24.47299 08 16 59.838 +08 45 24.87 21.9G 672947 F51 C~2kRF 2017 12 24.48456 08 16 59.787 +08 45 24.84 21.7G 672947 F51 C~2kRF 2018 01 10.44546 08 15 31.714 +08 48 04.16 21.5G 672947 F51 C~2kRF 2018 01 10.45963 08 15 31.640 +08 48 04.60 21.6G 672947 F51 C~2kRF 2018 01 10.47376 08 15 31.567 +08 48 04.93 21.7G 672947 F51 C~2kRF 2018 01 10.48792 08 15 31.483 +08 48 04.99 21.8G 672947 F51 C~2kRF 2018 01 12.54278 08 15 20.045 +08 48 33.58 22.0G 672947 F51 C~2kRF 2018 01 12.55616 08 15 19.975 +08 48 33.79 21.9G 672947 F51 C~2kRF 2018 01 12.56959 08 15 19.896 +08 48 33.95 21.7G 672947 F51 C~2kRF 2018 01 12.58306 08 15 19.828 +08 48 34.08 21.6G 672947 F51 C~2kRF 2020 03 22.32437 08 29 07.364 +08 04 20.80 21.7w 672947 F52 C~3nOI 2020 03 22.33685 08 29 07.329 +08 04 21.45 21.7w 672947 F52 C~3nOI 2020 03 22.34930 08 29 07.305 +08 04 21.63 21.7w 672947 F52 C~3nOI 2020 12 22.47720 08 45 47.808 +06 56 00.32 21.9w 672947 F51 C~4Num 2020 12 22.49001 08 45 47.746 +06 56 00.02 22.2w 672947 F51 C~4Num 2020 12 22.50288 08 45 47.711 +06 56 00.27 22.0w 672947 F51 C~4Num 2020 12 22.51579 08 45 47.663 +06 56 00.51 22.0w 672947 F51 C~4Num 2021 01 11.412480 08 44 13.530 +06 58 58.62 21.7G 672947 G37 C~4UFi 2021 01 11.452810 08 44 13.311 +06 58 59.18 672947 G37 C~4UFi 2021 01 11.493360 08 44 13.096 +06 58 59.67 672947 G37 C~4UFi 2021 02 11.364304 08 41 22.882 +07 09 47.33 21.8w 672947 F51 C~4ZFE 2021 02 11.378525 08 41 22.792 +07 09 47.86 21.7w 672947 F51 C~4ZFE 2021 02 11.392753 08 41 22.716 +07 09 48.20 21.8w 672947 F51 C~4ZFE 2021 02 11.407041 08 41 22.624 +07 09 48.55 21.6w 672947 F51 C~4ZFE 2022 01 29.438264 08 52 09.195 +06 26 35.08 21.3w 672947 F52 C~5S48 2022 01 29.449391 08 52 09.137 +06 26 35.35 21.4w 672947 F52 C~5S48 2022 01 29.460484 08 52 09.096 +06 26 35.30 21.2w 672947 F52 C~5S48 2022 03 02.121750 08 49 23.057 +06 40 45.17 21.8G 672947 G37 C~5S48 2022 03 02.161030 08 49 22.901 +06 40 46.01 672947 G37 C~5S48 2022 03 02.201610 08 49 22.715 +06 40 47.00 672947 G37 C~5S48 2023 01 25.395762 09 02 03.504 +05 46 34.80 21.6w 672947 F51 C~6CFy 2023 01 25.408381 09 02 03.444 +05 46 35.13 21.7w 672947 F51 C~6CFy 2023 01 25.421041 09 02 03.377 +05 46 35.25 21.7w 672947 F51 C~6CFy 2023 01 25.433711 09 02 03.304 +05 46 35.57 21.5w 672947 F51 C~6CFy 2023 03 18.352251 08 57 47.461 +06 10 34.34 22.0w 672947 F51 C~6VAq 2023 03 18.362899 08 57 47.428 +06 10 34.89 21.8w 672947 F51 C~6VAq 2023 03 18.384205 08 57 47.354 +06 10 35.32 21.9w 672947 F51 C~6VAq 2023 12 17.526068 09 14 21.137 +05 01 13.23 21.9w 672947 F51 C~7dJH 2023 12 17.537420 09 14 21.089 +05 01 13.06 21.7w 672947 F51 C~7dJH 2023 12 17.548799 09 14 21.069 +05 01 13.32 21.7w 672947 F51 C~7dJH 2024 01 20.499404 09 11 57.938 +05 05 59.15 21.6w 672947 F52 C~7grL 2024 01 20.512000 09 11 57.862 +05 05 59.59 21.6w 672947 F52 C~7grL 2024 01 20.524495 09 11 57.801 +05 05 59.73 21.6w 672947 F52 C~7grL 2024 03 02.416821 09 08 16.119 +05 24 18.17 21.7w 672947 F51 C~7ugt 2024 03 02.428887 09 08 16.070 +05 24 18.57 21.8w 672947 F51 C~7ugt 2024 03 02.440895 09 08 15.995 +05 24 18.72 21.7w 672947 F51 C~7ugt 2024 04 05.321440 09 06 20.584 +05 41 02.56 21.7w 672947 F51 C~7zjE 2024 04 05.332890 09 06 20.554 +05 41 02.40 21.7w 672947 F51 C~7zjE 2024 04 05.344296 09 06 20.542 +05 41 02.86 21.6w 672947 F51 C~7zjE 2024 12 28.469907 09 23 00.205 +04 22 25.73 21.5w 672947 F52 C~8cKG 2024 12 28.482722 09 23 00.164 +04 22 25.99 21.6w 672947 F52 C~8cKG 2024 12 28.495530 09 23 00.111 +04 22 26.24 21.5w 672947 F52 C~8cKG 2025 02 22.387707 09 18 21.105 +04 40 55.10 21.4w 672947 F51 C~8krH 2025 02 22.401529 09 18 21.020 +04 40 55.49 21.6w 672947 F51 C~8krH 2025 02 22.413829 09 18 20.970 +04 40 55.80 21.5w 672947 F51 C~8krH 2025 02 22.426145 09 18 20.893 +04 40 56.09 21.6w 672947 F51 C~8krH
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 -0.01 0.00 -0.05
2 0.0000 0.00 0.05 0.00 -0.15
3 1.9058 0.00 0.08 0.00 -0.01
4 1.9059 0.00 0.03 0.00 0.09
5 1.9059 0.00 0.23 0.00 -0.24
6 1.9986 0.00 0.00 0.00 -0.15
7 1.9986 0.00 -0.11 0.00 0.11
8 1.9987 0.00 -0.13 0.00 0.23
9 1.9987 0.00 -0.10 0.00 -0.01
10 2.0747 0.00 -0.03 0.00 0.29
11 2.0747 0.00 -0.07 0.00 0.03
12 2.0747 0.00 -0.23 0.00 -0.17
13 2.0774 0.00 0.15 0.00 0.15
14 2.0775 0.00 -0.10 0.00 -0.05
15 2.0775 0.00 -0.04 0.00 0.02
16 2.1515 0.00 -0.13 0.00 0.12
17 2.1515 0.00 0.14 0.00 0.14
18 2.1515 0.00 0.05 0.00 -0.02
19 2.1516 0.00 0.03 0.00 0.04
20 2.1542 0.00 0.06 0.00 -0.04
21 2.1543 0.00 0.00 0.00 -0.10
22 2.1543 0.00 0.08 0.00 0.04
23 2.1543 0.00 -0.09 0.00 0.05
24 2.9730 0.00 -0.01 0.00 -0.08
25 2.9730 0.00 0.02 0.00 0.08
26 2.9730 0.00 -0.12 0.00 -0.06
27 2.9730 0.00 -0.09 0.00 0.05
28 3.0249 0.00 -0.01 0.00 -0.11
29 3.0249 0.00 0.03 0.00 -0.00
30 3.0250 0.00 -0.10 0.00 0.08
31 3.0250 0.00 -0.02 0.00 0.06
32 3.8032 0.00 -0.07 0.00 -0.07
33 3.8032 0.00 -0.01 0.00 -0.10
34 3.8032 0.00 -0.08 0.00 -0.12
35 3.8033 0.00 0.05 0.00 0.03
36 4.0134 0.00 0.08 0.00 -0.01
37 4.0135 0.00 0.12 0.00 0.22
38 4.0135 0.00 0.17 0.00 0.04
39 4.0135 0.00 0.25 0.00 0.07
40 4.0356 0.00 -0.06 0.00 0.00
41 4.0356 0.00 0.07 0.00 -0.10
42 4.0356 0.00 -0.23 0.00 0.02
43 4.0357 0.00 0.12 0.00 -0.02
44 4.8353 0.00 -0.03 0.00 0.10
45 4.8353 0.00 -0.01 0.00 -0.06
46 4.8353 0.00 -0.07 0.00 -0.05
47 4.9117 0.00 0.03 0.00 0.01
48 4.9118 0.00 -0.21 0.00 0.11
49 4.9226 0.00 -0.02 0.00 -0.04
50 4.9226 0.00 -0.05 0.00 -0.07
51 4.9227 0.00 -0.09 0.00 0.02
52 4.9227 0.00 -0.01 0.00 -0.07
53 4.9691 0.00 -0.14 0.00 -0.29
54 4.9692 0.00 -0.05 0.00 -0.04
55 4.9692 0.00 0.05 0.00 0.10
56 4.9692 0.00 -0.01 0.00 -0.03
57 4.9749 0.00 0.04 0.00 -0.03
58 4.9749 0.00 0.13 0.00 -0.01
59 4.9749 0.00 0.09 0.00 -0.04
60 4.9750 0.00 0.21 0.00 -0.10
61 7.1646 0.00 -0.02 0.00 -0.19
62 7.1646 0.00 -0.08 0.00 0.14
63 7.1646 0.00 0.02 0.00 0.01
64 7.9179 0.00 -0.09 0.00 0.17
65 7.9179 0.00 -0.22 0.00 -0.18
66 7.9180 0.00 0.06 0.00 0.03
67 7.9180 0.00 0.14 0.00 0.23
68 7.9725 0.00 0.03 0.00 0.03
69 7.9726 0.00 -0.02 0.00 0.01
70 7.9727 0.00 0.01 0.00 -0.08
71 8.0572 0.00 0.23 0.00 -0.10
72 8.0572 0.00 0.05 0.00 0.06
73 8.0573 0.00 0.09 0.00 0.03
74 8.0573 0.00 -0.12 0.00 0.00
75 9.0211 0.00 -0.06 0.00 0.11
76 9.0212 0.00 0.02 0.00 0.13
77 9.0212 0.00 0.35 0.00 -0.17
78 9.1079 0.00 -0.34 0.00 0.40
79 9.1080 0.00 0.05 0.00 0.09
80 9.1081 0.00 0.07 0.00 -0.11
81 10.0094 0.00 -0.10 0.00 0.00
82 10.0094 0.00 0.05 0.00 0.07
83 10.0094 0.00 0.10 0.00 -0.08
84 10.0095 0.00 0.06 0.00 -0.02
85 10.1516 0.00 -0.07 0.00 -0.20
86 10.1517 0.00 0.00 0.00 0.04
87 10.1517 0.00 0.03 0.00 -0.16
88 10.9023 0.00 0.10 0.00 -0.07
89 10.9023 0.00 -0.11 0.00 -0.21
90 10.9023 0.00 0.09 0.00 0.08
91 10.9953 0.00 0.14 0.00 -0.14
92 10.9953 0.00 0.00 0.00 0.07
93 10.9954 0.00 0.08 0.00 -0.02
94 11.1101 0.00 -0.06 0.00 0.12
95 11.1101 0.00 0.08 0.00 0.15
96 11.1101 0.00 -0.18 0.00 -0.07
97 11.2029 0.00 0.06 0.00 0.32
98 11.2029 0.00 -0.06 0.00 -0.14
99 11.2029 0.00 0.09 0.00 0.02
100 11.9343 0.00 -0.18 0.00 -0.30
101 11.9343 0.00 -0.07 0.00 -0.10
102 11.9344 0.00 -0.14 0.00 0.09
103 12.0874 0.00 0.11 0.00 0.10
104 12.0874 0.00 -0.08 0.00 0.07
105 12.0875 0.00 0.15 0.00 0.00
106 12.0875 0.00 -0.03 0.00 -0.08
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.
672947 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 99.360 99.359 99.362 ecceobj 0.662 0.662 0.662 incobj 10.426 10.426 10.426 qmin 32.646 32.677 32.675 qmax 166.615 187.340 170.183 amean 91.455 101.584 95.335 amin 86.244 96.638 89.206 amax 100.062 110.866 102.149 emean 0.629 0.665 0.644 emin 0.600 0.646 0.614 emax 0.665 0.690 0.668 imean 12.316 12.430 12.020 imin 11.043 10.909 10.736 imax 13.682 13.964 13.382 excite_mean 0.665 0.699 0.677 fracstop 1.000 1.000 1.000 cjmean 2.975 2.975 2.978 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 198.8 177.9 194.4 kozaiamp 179.9 179.9 180.0