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: 17EN51 # Created Sun Dec 22 02:10:59 2024 # Orbit generated from Bernstein formalism # Fitting 51 observations of 51 # Arc: 2.20y # First observation: 2017/01/21 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000012 0.028504 -0.000003 0.007528 0.026834 0.000000 # Chi-squared of fit: 77.75 DOF: 96 RMS: 0.22 # Min/Max residuals: -0.73 0.56 # Exact a, adot, b, bdot, g, gdot: 1.611428E-05 2.841363E-02 3.292267E-06 7.509932E-03 2.678170E-02 -1.307381E-03 # Covariance matrix: 9.0421E-14 -2.9491E-14 1.5217E-15 -3.1038E-15 9.2986E-14 -1.3821E-13 -2.9491E-14 1.0007E-12 -4.0392E-14 3.6024E-13 2.4099E-13 2.2959E-11 1.5217E-15 -4.0392E-14 4.0972E-14 -4.2932E-14 -7.8668E-15 -9.9940E-13 -3.1038E-15 3.6024E-13 -4.2932E-14 2.1024E-13 8.9277E-14 8.8963E-12 9.2986E-14 2.4099E-13 -7.8668E-15 8.9277E-14 2.3334E-13 5.7987E-12 -1.3821E-13 2.2959E-11 -9.9940E-13 8.8963E-12 5.7987E-12 5.6689E-10 # lat0 lon0 xBary yBary zBary JD0 -10.063789 152.194991 0.509816 -0.147283 -0.830947 2457774.941791 # Heliocentric elements and errors Epoch: 2457770.5000 = 2017/01/17 Mean Anomaly: 344.70958 +/- 0.192 Argument of Peri: 347.71587 +/- 0.287 Long of Asc Node: 184.60078 +/- 0.001 Inclination: 17.58998 +/- 0.000 Eccentricity: 0.17956895 +/- 0.0003 Semi-Major Axis: 46.00668269 +/- 0.0046 Time of Perihelion: 2462611.6294 +/- 60.9 Perihelion: 37.74531077 +/- 0.0140 Aphelion: 54.26805462 +/- 0.0145 Period (y) 312.0611 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.03189246 +/- 0.0006 Ecliptic Y 17.98928549 +/- 0.0003 Ecliptic Z -6.52468311 +/- 0.0001 Ecliptic XDOT -0.00135439 +/- 0.0000 Ecliptic YDOT -0.00257481 +/- 0.0000 Ecliptic ZDOT 0.00077921 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.17449151 +/- 0.0005 Geocenter to KBO 37.33892895 +/- 0.0007 # Hcoef: 9.90
The following table shows the complete astrometric record for 17EN51. 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 (17EN51) followed by the observatory code and reference code for the source of the astrometry.
2017 01 21.44099 10 02 22.17 +01 16 54.3 25.4z 17EN51 T09 C~7ujM 2017 01 21.48580 10 02 21.96 +01 16 55.1 25.3z 17EN51 T09 C~7ujM 2017 01 21.51187 10 02 21.85 +01 16 55.4 25.3z 17EN51 T09 C~7ujM 2017 01 23.36852 10 02 13.84 +01 17 32.0 25.9r 17EN51 T09 C~7ujM 2017 01 23.41024 10 02 13.68 +01 17 33.0 26.1r 17EN51 T09 C~7ujM 2017 01 23.41467 10 02 13.66 +01 17 33.0 26.0r 17EN51 T09 C~7ujM 2017 01 23.52068 10 02 13.19 +01 17 35.2 26.2i 17EN51 T09 C~7ujM 2017 01 23.56169 10 02 13.00 +01 17 36.1 25.5i 17EN51 T09 C~7ujM 2017 01 23.59193 10 02 12.85 +01 17 36.6 26.0i 17EN51 T09 C~7ujM 2017 02 23.45915 09 59 45.25 +01 31 39.8 26.0r 17EN51 T09 C~7ujM 2017 02 23.46720 09 59 45.20 +01 31 39.4 26.1r 17EN51 T09 C~7ujN 2017 02 23.47280 09 59 45.18 +01 31 40.6 26.3r 17EN51 T09 C~7ujN 2017 02 23.48087 09 59 45.13 +01 31 40.6 25.0r 17EN51 T09 C~7xU7 2017 02 23.48645 09 59 45.10 +01 31 40.6 25.4r 17EN51 T09 C~7xU7 2017 02 23.49450 09 59 45.08 +01 31 40.6 25.6r 17EN51 T09 C~7xU7 2017 02 23.49694 09 59 45.07 +01 31 41.1 25.8r 17EN51 T09 C~7xU7 2017 02 23.50008 09 59 45.04 +01 31 40.6 25.7r 17EN51 T09 C~7xU7 2017 02 23.50391 09 59 45.02 +01 31 41.1 26.1r 17EN51 T09 C~7xU7 2017 02 23.51193 09 59 44.98 +01 31 41.0 25.9r 17EN51 T09 C~7xU7 2017 03 04.44130 09 59 02.03 +01 36 41.3 25.0i 17EN51 T09 C~7ujN 2017 03 04.44514 09 59 02.03 +01 36 41.3 24.9i 17EN51 T09 C~7ujN 2017 03 04.45601 09 59 01.96 +01 36 41.7 25.5i 17EN51 T09 C~7ujN 2017 03 04.46328 09 59 01.94 +01 36 42.2 25.3i 17EN51 T09 C~7ujN 2017 03 04.47782 09 59 01.85 +01 36 42.7 25.3i 17EN51 T09 C~7ujN 2017 03 04.48885 09 59 01.82 +01 36 43.2 25.1i 17EN51 T09 C~7ujN 2017 03 04.49952 09 59 01.78 +01 36 43.2 26.0i 17EN51 T09 C~7ujN 2017 03 04.50666 09 59 01.74 +01 36 43.2 25.4i 17EN51 T09 C~7ujN 2017 03 06.49634 09 58 52.44 +01 37 52.2 25.5r 17EN51 T09 C~7ujN 2017 03 06.50449 09 58 52.39 +01 37 52.7 25.4r 17EN51 T09 C~7ujN 2017 03 06.51829 09 58 52.32 +01 37 53.0 25.5r 17EN51 T09 C~7ujN 2017 03 22.39826 09 57 44.21 +01 47 07.7 24.4z 17EN51 T09 C~7ujN 2017 03 22.41670 09 57 44.12 +01 47 08.8 24.8z 17EN51 T09 C~7ujN 2017 03 22.42393 09 57 44.11 +01 47 09.3 24.5z 17EN51 T09 C~7ujN 2017 03 22.42777 09 57 44.07 +01 47 09.2 24.6z 17EN51 T09 C~7ujN 2017 03 22.43161 09 57 44.04 +01 47 09.8 25.0z 17EN51 T09 C~7ujN 2017 03 22.44235 09 57 44.03 +01 47 09.8 24.8z 17EN51 T09 C~7ujN 2017 03 22.45341 09 57 43.98 +01 47 10.7 24.9z 17EN51 T09 C~7ujN 2017 03 22.48979 09 57 43.84 +01 47 11.3 25.3z 17EN51 T09 C~7ujN 2017 03 25.26003 09 57 33.30 +01 48 47.9 26.3r 17EN51 T09 C~7ujN 2017 03 25.26562 09 57 33.30 +01 48 47.4 26.3r 17EN51 T09 C~7ujN 2017 03 25.28747 09 57 33.25 +01 48 48.9 26.4r 17EN51 T09 C~7ujN 2018 01 17.46122 10 09 22.36 +01 05 17.4 26.0i 17EN51 T09 C~81By 2018 01 17.49135 10 09 22.23 +01 05 17.9 25.6i 17EN51 T09 C~81By 2018 01 17.51296 10 09 22.16 +01 05 18.4 25.7i 17EN51 T09 C~81By 2018 01 17.51830 10 09 22.13 +01 05 18.6 25.9i 17EN51 T09 C~81By 2018 01 17.59901 10 09 21.81 +01 05 19.9 25.9i 17EN51 T09 C~81By 2019 02 04.448494 10 14 49.64 +01 01 13.2 17EN51 T09 C~81By 2019 02 05.425366 10 14 45.09 +01 01 39.3 17EN51 T09 C~81By 2019 04 05.334495 10 10 22.11 +01 34 16.6 17EN51 T09 C~81By 2019 04 05.358918 10 10 22.02 +01 34 17.8 17EN51 T09 C~81By 2019 04 05.369564 10 10 21.99 +01 34 18.1 17EN51 T09 C~81By
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 0.24
2 0.0001 -3.23 -0.05 -0.36 0.10
3 0.0002 -4.88 0.07 -0.66 -0.07
4 0.0053 -130.19 -0.20 -8.67 -0.26
5 0.0054 -132.79 0.09 -8.58 0.01
6 0.0054 -133.07 0.12 -8.69 -0.07
7 0.0057 -140.44 0.12 -9.11 -0.02
8 0.0058 -143.43 -0.01 -9.27 -0.00
9 0.0059 -145.71 -0.18 -9.59 -0.19
10 0.0904 -2514.31 -0.07 1.05 0.24
11 0.0904 -2514.87 0.03 0.41 -0.43
12 0.0904 -2515.58 -0.22 1.43 0.56
13 0.0905 -2516.28 -0.27 1.16 0.26
14 0.0905 -2516.70 -0.23 1.01 0.08
15 0.0905 -2516.98 0.14 0.90 -0.06
16 0.0905 -2517.30 0.02 1.32 0.35
17 0.0905 -2517.54 0.03 0.69 -0.29
18 0.0905 -2518.00 -0.11 1.05 0.05
19 0.0905 -2518.53 0.02 0.75 -0.29
20 0.1150 -3227.14 0.01 55.42 -0.13
21 0.1150 -3227.14 0.31 55.42 -0.15
22 0.1150 -3228.26 0.05 55.43 -0.22
23 0.1151 -3228.72 0.17 55.79 0.09
24 0.1151 -3230.16 -0.12 55.78 -0.02
25 0.1151 -3230.76 0.16 56.09 0.22
26 0.1151 -3231.32 0.44 55.88 -0.07
27 0.1152 -3231.88 0.45 55.67 -0.33
28 0.1206 -3386.72 0.08 71.24 -0.07
29 0.1206 -3387.60 -0.16 71.45 0.08
30 0.1207 -3388.69 -0.17 71.36 -0.12
31 0.1642 -4540.13 0.42 231.74 -0.41
32 0.1642 -4541.78 0.02 232.30 -0.07
33 0.1642 -4542.09 0.19 232.71 0.26
34 0.1642 -4542.62 -0.07 232.41 -0.09
35 0.1642 -4543.25 -0.44 232.81 0.27
36 0.1643 -4543.39 0.15 232.76 0.09
37 0.1643 -4544.41 -0.12 233.34 0.54
38 0.1644 -4546.59 0.16 233.16 -0.06
39 0.1720 -4728.57 -0.73 268.08 0.08
40 0.1720 -4728.39 -0.19 267.61 -0.45
41 0.1721 -4729.62 0.01 268.76 0.42
42 0.9884 6145.04 0.00 1567.91 -0.11
43 0.9885 6143.04 -0.12 1567.69 -0.16
44 0.9886 6141.88 0.07 1567.79 0.06
45 0.9886 6141.39 -0.09 1567.82 0.12
46 0.9888 6136.43 -0.00 1567.34 0.10
47 2.0370 10832.83 -0.05 3073.44 -0.45
48 2.0397 10759.56 0.00 3073.74 0.16
49 2.2009 6370.77 0.19 3512.59 -0.12
50 2.2010 6369.08 -0.08 3513.24 0.19
51 2.2010 6368.56 0.01 3513.36 0.17
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.
17EN51 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.785 45.800 45.771 ecceobj 0.173 0.173 0.173 incobj 17.645 17.645 17.646 qmin 37.234 37.112 37.224 qmax 54.724 54.848 54.735 amean 45.783 45.783 45.783 amin 45.390 45.376 45.403 amax 46.241 46.239 46.228 emean 0.172 0.174 0.173 emin 0.161 0.162 0.164 emax 0.184 0.187 0.184 imean 17.637 17.566 17.625 imin 17.241 17.233 17.226 imax 18.072 18.014 18.007 excite_mean 0.349 0.348 0.349 fracstop 1.000 1.000 1.000 cjmean 2.973 2.973 2.973 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 177.9 173.6 181.2 kozaiamp 179.9 180.0 180.0