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: 17OY166
# Created Wed May 8 01:18:10 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 3.07y
# First observation: 2017/07/20
# Last observation: 2020/08/15
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.021922 -0.000000 -0.000369 0.023198 0.000000
# Chi-squared of fit: 0.42 DOF: 54 RMS: 0.02
# Min/Max residuals: -0.03 0.05
# Exact a, adot, b, bdot, g, gdot:
1.506345E-05 2.206158E-02 -2.087579E-07 -3.721539E-04 2.323684E-02 1.655556E-03
# Covariance matrix:
2.8436E-13 4.9696E-12 1.4472E-15 -8.5517E-14 4.3598E-12 7.6985E-11
4.9696E-12 6.4469E-10 1.8469E-13 -1.0912E-11 5.5780E-10 9.8247E-09
1.4472E-15 1.8469E-13 2.4436E-13 -8.6258E-14 1.5982E-13 2.8148E-12
-8.5517E-14 -1.0912E-11 -8.6258E-14 2.2015E-13 -9.4417E-12 -1.6630E-10
4.3598E-12 5.5780E-10 1.5982E-13 -9.4417E-12 4.8297E-10 8.5015E-09
7.6985E-11 9.8247E-09 2.8148E-12 -1.6630E-10 8.5015E-09 1.4973E-07
# lat0 lon0 xBary yBary zBary JD0
2.039174 -76.972648 -0.257482 0.034929 -0.978874 2457954.754051
# Heliocentric elements and errors
Epoch: 2457950.5000 = 2017/07/16
Mean Anomaly: 75.74240 +/- 0.413
Argument of Peri: 30.88069 +/- 1.478
Long of Asc Node: 167.14522 +/- 0.019
Inclination: 2.22196 +/- 0.000
Eccentricity: 0.08423012 +/- 0.0174
Semi-Major Axis: 44.63872320 +/- 0.0586
Time of Perihelion: 2435031.1309 +/- 116.6
Perihelion: 40.87879815 +/- 0.7783
Aphelion: 48.39864825 +/- 0.7790
Period (y) 298.2468 +/- 0.59
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 10.16429306 +/- 0.0092
Ecliptic Y -42.80227105 +/- 0.0396
Ecliptic Z 1.53136435 +/- 0.0014
Ecliptic XDOT 0.00258133 +/- 0.0000
Ecliptic YDOT 0.00038859 +/- 0.0000
Ecliptic ZDOT -0.00003698 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.01922691 +/- 0.0386
Geocenter to KBO 43.03511067 +/- 0.0407
# Hcoef: 8.49
The following table shows the complete astrometric record for 17OY166. 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 (17OY166) followed by the observatory code and reference code for the source of the astrometry.
2017 07 20.25325 18 55 46.003 -20 46 18.61 25.0r 17OY166 266 C~6c3b 2017 07 20.35277 18 55 45.530 -20 46 19.36 25.0r 17OY166 266 C~6c3b 2017 07 20.47629 18 55 44.942 -20 46 20.25 25.0r 17OY166 266 C~6c3b 2017 07 21.24888 18 55 41.358 -20 46 25.83 24.6r 17OY166 266 C~6c3b 2017 07 21.41126 18 55 40.590 -20 46 27.03 24.6r 17OY166 266 C~6c3b 2017 07 21.54551 18 55 39.957 -20 46 27.98 24.6r 17OY166 266 C~6c3b 2020 05 28.44674 19 15 45.360 -20 19 00.96 24.7r 17OY166 266 C~6c3b 2020 05 28.50129 19 15 45.169 -20 19 01.23 24.7r 17OY166 266 C~6c3b 2020 05 28.55756 19 15 44.970 -20 19 01.50 24.7r 17OY166 266 C~6c3b 2020 05 30.43935 19 15 38.390 -20 19 10.70 24.8r 17OY166 266 C~6c3b 2020 05 30.53044 19 15 38.059 -20 19 11.17 24.8r 17OY166 266 C~6c3b 2020 05 30.61862 19 15 37.737 -20 19 11.61 24.8r 17OY166 266 C~6c3b 2020 06 01.43269 19 15 31.179 -20 19 20.95 24.9r 17OY166 266 C~6c3b 2020 06 01.47325 19 15 31.027 -20 19 21.17 24.9r 17OY166 266 C~6c3b 2020 06 01.60571 19 15 30.528 -20 19 21.87 24.9r 17OY166 266 C~6c3b 2020 06 20.45583 19 14 12.222 -20 21 24.02 25.0r 17OY166 266 C~6c3b 2020 06 20.52860 19 14 11.886 -20 21 24.57 25.0r 17OY166 266 C~6c3b 2020 06 20.62233 19 14 11.454 -20 21 25.25 25.0r 17OY166 266 C~6c3b 2020 06 22.44948 19 14 03.114 -20 21 39.20 25.1r 17OY166 266 C~6c3b 2020 06 22.52092 19 14 02.779 -20 21 39.75 25.1r 17OY166 266 C~6c3b 2020 06 22.59118 19 14 02.451 -20 21 40.28 25.1r 17OY166 266 C~6c3b 2020 06 25.44823 19 13 49.216 -20 22 02.61 24.8r 17OY166 266 C~6c3b 2020 06 25.53213 19 13 48.817 -20 22 03.28 24.8r 17OY166 266 C~6c3b 2020 06 25.61487 19 13 48.425 -20 22 03.91 24.8r 17OY166 266 C~6c3b 2020 08 13.24332 19 10 07.003 -20 29 05.78 25.0r 17OY166 266 C~6c3b 2020 08 13.33331 19 10 06.655 -20 29 06.53 25.0r 17OY166 266 C~6c3b 2020 08 13.42301 19 10 06.308 -20 29 07.26 25.0r 17OY166 266 C~6c3b 2020 08 15.24331 19 09 59.529 -20 29 22.14 24.8r 17OY166 266 C~6c3b 2020 08 15.33985 19 09 59.167 -20 29 22.94 24.8r 17OY166 266 C~6c3b 2020 08 15.42111 19 09 58.862 -20 29 23.59 24.8r 17OY166 266 C~6c3b
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 -0.01
2 0.0003 -6.68 -0.01 -0.11 -0.01
3 0.0006 -14.97 -0.02 -0.21 -0.01
4 0.0027 -65.54 0.01 -0.94 0.01
5 0.0032 -76.37 0.01 -1.11 0.01
6 0.0035 -85.30 0.02 -1.20 0.01
7 2.8561 16961.17 0.03 -246.18 0.05
8 2.8563 16958.46 0.04 -246.10 0.05
9 2.8564 16955.63 0.03 -246.02 0.05
10 2.8616 16862.02 -0.02 -243.45 -0.00
11 2.8618 16857.31 -0.01 -243.32 -0.00
12 2.8621 16852.73 -0.02 -243.19 -0.01
13 2.8670 16759.43 -0.01 -240.81 -0.00
14 2.8671 16757.27 -0.01 -240.76 0.00
15 2.8675 16750.17 -0.01 -240.57 0.00
16 2.9191 15635.35 -0.00 -224.02 0.01
17 2.9193 15630.57 0.01 -223.98 0.00
18 2.9196 15624.42 0.01 -223.90 0.01
19 2.9246 15505.64 -0.02 -223.20 -0.02
20 2.9248 15500.87 -0.03 -223.17 -0.02
21 2.9249 15496.20 -0.02 -223.12 -0.02
22 2.9328 15307.70 0.01 -222.27 -0.00
23 2.9330 15302.02 0.01 -222.24 -0.01
24 2.9332 15296.44 0.01 -222.19 -0.00
25 3.0664 12141.84 0.04 -265.51 -0.02
26 3.0666 12136.88 0.04 -265.68 -0.02
27 3.0669 12131.94 0.04 -265.83 -0.02
28 3.0718 12035.26 -0.03 -269.40 0.00
29 3.0721 12030.10 -0.03 -269.59 -0.01
30 3.0723 12025.75 -0.03 -269.73 -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.
17OY166 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.251 44.529 44.141 ecceobj 0.078 0.121 0.037 incobj 2.219 2.218 2.220 qmin 40.228 38.544 41.918 qmax 49.020 51.353 47.019 amean 44.492 44.784 44.375 amin 44.131 44.410 44.033 amax 44.869 45.183 44.732 emean 0.077 0.121 0.037 emin 0.061 0.105 0.022 emax 0.093 0.137 0.051 imean 2.484 2.457 2.487 imin 1.860 1.677 1.918 imax 3.100 3.201 3.050 excite_mean 0.089 0.128 0.058 fracstop 1.000 1.000 1.000 cjmean 3.098 3.091 3.102 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 175.2 176.3 181.8 kozaiamp 179.9 180.0 179.9