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: 17SN132 # Created Tue Apr 1 01:11:08 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 15 # Arc: 2.28y # First observation: 2017/09/16 # Last observation: 2019/12/28 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.007495 0.000001 0.000020 0.012421 0.000000 # Chi-squared of fit: 13.10 DOF: 22 RMS: 0.17 # Min/Max residuals: -0.41 0.30 # Exact a, adot, b, bdot, g, gdot: 9.906773E-06 7.463797E-03 -8.994389E-08 1.704814E-05 1.239625E-02 5.594526E-03 # Covariance matrix: 6.9608E-13 1.2032E-13 7.1313E-14 -4.8491E-15 5.9221E-13 -1.4741E-11 1.2032E-13 3.3113E-13 4.8507E-14 -2.6061E-15 3.9428E-13 -1.1542E-11 7.1313E-14 4.8507E-14 2.9648E-13 -1.5745E-13 8.1342E-14 -7.8572E-12 -4.8491E-15 -2.6061E-15 -1.5745E-13 1.4773E-13 -5.7100E-14 -1.2539E-11 5.9221E-13 3.9428E-13 8.1342E-14 -5.7100E-14 1.3117E-12 9.6034E-11 -1.4741E-11 -1.1542E-11 -7.8572E-12 -1.2539E-11 9.6034E-11 3.0233E-08 # lat0 lon0 xBary yBary zBary JD0 -24.375654 47.879892 0.813956 -0.244630 -0.540208 2458013.055381 # Heliocentric elements and errors Epoch: 2458010.5000 = 2017/09/14 Mean Anomaly: 41.38096 +/- 2.051 Argument of Peri: 155.07525 +/- 0.690 Long of Asc Node: 137.91148 +/- 0.013 Inclination: 24.20477 +/- 0.000 Eccentricity: 0.60664166 +/- 0.0158 Semi-Major Axis: 96.39373703 +/- 2.9549 Time of Perihelion: 2418275.8171 +/- 734.7 Perihelion: 37.91728077 +/- 1.9178 Aphelion: 154.87019330 +/- 4.9865 Period (y) 946.4146 +/- 43.52 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 50.27963860 +/- 0.0046 Ecliptic Y 54.39098039 +/- 0.0050 Ecliptic Z -33.29373317 +/- 0.0031 Ecliptic XDOT -0.00046189 +/- 0.0000 Ecliptic YDOT 0.00193593 +/- 0.0000 Ecliptic ZDOT -0.00050664 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 81.20894947 +/- 0.0046 Geocenter to KBO 80.66955351 +/- 0.0075 # Hcoef: 5.80
The following table shows the complete astrometric record for 17SN132. 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 (17SN132) followed by the observatory code and reference code for the source of the astrometry.
2017 09 16.55458 03 28 18.072 -06 18 37.33 24.9r 17SN132 568 C~2yfy 2017 09 17.55671 03 28 16.889 -06 18 57.13 24.8r 17SN132 568 C~2yfy 2017 11 21.19792 03 25 56.831 -06 35 22.47 24.9r 17SN132 304 C~2yfy 2017 11 22.23278 03 25 54.133 -06 35 29.32 24.9r 17SN132 304 C~2yfy 2017 12 14.08489 03 24 59.980 -06 36 25.28 17SN132 304 C~2yfy 2017 12 14.14427 03 24 59.813 -06 36 25.77 17SN132 304 C~2yfy 2018 12 03.03240 03 27 06.751 -06 29 20.66 24.7r 17SN132 304 C~2yfy 2018 12 03.06978 03 27 06.648 -06 29 20.42 17SN132 304 C~2yfy 2018 12 03.10402 03 27 06.566 -06 29 20.35 24.8r 17SN132 304 C~2yfy 2018 12 04.02674 03 27 04.298 -06 29 23.34 17SN132 304 C~2yfy 2018 12 04.03408 03 27 04.264 -06 29 23.21 17SN132 304 C~2yfy 2019 12 27.11710 03 27 51.921 -06 21 46.96 17SN132 304 C~3qTq 2019 12 27.16214 03 27 51.830 -06 21 46.80 17SN132 304 C~3qTq 2019 12 27.20758 03 27 51.731 -06 21 46.55 17SN132 304 C~3qTq 2019 12 28.10618 03 27 50.045 -06 21 40.78 17SN132 304 C~3qTq
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 -0.08 0.00 0.02
2 0.0027 -22.30 -0.11 -14.34 0.11
3 0.1797 -2297.61 0.13 -404.53 -0.08
4 0.1826 -2338.18 0.30 -400.39 0.02
5 0.2424 -3130.87 ( 0.22) -238.81 ( 0.60)
6 0.2425 -3133.40 -0.36 -238.62 0.16
7 1.2114 -1196.73 -0.05 -334.71 -0.25
8 1.2115 -1198.14 -0.08 -334.07 0.12
9 1.2116 -1199.30 0.03 -333.67 0.26
10 1.2142 -1232.67 0.26 -327.50 -0.41
11 1.2142 -1233.13 0.07 -327.24 -0.20
12 2.2767 -426.45 0.03 -78.07 0.07
13 2.2768 -427.72 -0.04 -77.55 -0.02
14 2.2769 -429.07 -0.20 -76.92 0.00
15 2.2794 -451.74 0.10 -64.62 0.19
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.
17SN132 quality flag:1 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 98.414 108.811 90.507 ecceobj 0.607 0.655 0.561 incobj 24.197 24.197 24.197 qmin 37.297 35.510 37.984 qmax 161.384 184.397 144.148 amean 97.197 107.159 89.503 amin 95.607 105.117 88.116 amax 99.810 110.514 91.558 emean 0.606 0.655 0.561 emin 0.598 0.643 0.548 emax 0.617 0.669 0.576 imean 22.844 22.448 22.714 imin 22.617 21.734 22.088 imax 23.095 23.356 23.433 excite_mean 0.720 0.758 0.681 fracstop 1.000 1.000 1.000 cjmean 2.943 2.915 2.968 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 210.1 230.7 246.2 kozaiamp 56.0 74.1 93.5