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: 22LO17
# Created Sun Nov 24 02:11:12 2024
# Orbit generated from Bernstein formalism
# Fitting 21 observations of 21
# Arc: 2.01y
# First observation: 2021/09/06
# Last observation: 2023/09/10
Preliminary a, adot, b, bdot, g, gdot:
0.000034 0.019674 -0.000005 -0.000746 0.022148 0.000000
# Chi-squared of fit: 0.39 DOF: 36 RMS: 0.02
# Min/Max residuals: -0.05 0.04
# Exact a, adot, b, bdot, g, gdot:
1.423080E-05 1.968108E-02 -3.690199E-07 -7.477156E-04 2.186815E-02 -3.263856E-04
# Covariance matrix:
4.8802E-13 -8.5967E-13 -9.9434E-15 2.7126E-14 -2.7056E-13 -1.5714E-11
-8.5967E-13 2.9406E-11 5.2773E-13 -1.3073E-12 1.9813E-12 7.4449E-10
-9.9434E-15 5.2773E-13 2.3395E-13 -1.7668E-13 3.3209E-14 1.3456E-11
2.7126E-14 -1.3073E-12 -1.7668E-13 2.0940E-13 -8.4517E-14 -3.3308E-11
-2.7056E-13 1.9813E-12 3.3209E-14 -8.4517E-14 3.3535E-13 4.8373E-11
-1.5714E-11 7.4449E-10 1.3456E-11 -3.3308E-11 4.8373E-11 1.8967E-08
# lat0 lon0 xBary yBary zBary JD0
0.844238 -75.139125 -0.854592 0.007434 -0.517402 2459463.733371
# Heliocentric elements and errors
Epoch: 2459460.5000 = 2021/09/03
Mean Anomaly: 180.62866 +/- 8.671
Argument of Peri: 338.52237 +/- 8.682
Long of Asc Node: 126.80423 +/- 0.010
Inclination: 2.34089 +/- 0.001
Eccentricity: 0.04401250 +/- 0.0003
Semi-Major Axis: 44.31018744 +/- 0.0093
Time of Perihelion: 2513139.4918 +/- 2594.7
Perihelion: 42.35998541 +/- 0.0161
Aphelion: 46.26038948 +/- 0.0166
Period (y) 294.9603 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 12.69432856 +/- 0.0003
Ecliptic Y -44.47935867 +/- 0.0012
Ecliptic Z 0.67379439 +/- 0.0000
Ecliptic XDOT 0.00237626 +/- 0.0000
Ecliptic YDOT 0.00067796 +/- 0.0000
Ecliptic ZDOT -0.00009438 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.26027804 +/- 0.0011
Geocenter to KBO 45.72860648 +/- 0.0012
# Hcoef: 7.85
The following table shows the complete astrometric record for 22LO17. 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 (22LO17) followed by the observatory code and reference code for the source of the astrometry.
2021 09 06.23257 19 04 07.231 -21 46 18.74 25.1r 22LO17 266 C~7umS 2021 09 06.31280 19 04 07.066 -21 46 19.10 25.1r 22LO17 266 C~7umS 2021 09 06.39351 19 04 06.901 -21 46 19.44 25.1r 22LO17 266 C~7umS 2022 06 02.44372 19 15 21.438 -21 29 06.99 25.1r 22LO17 266 C~6Ipd 2022 06 02.53086 19 15 21.117 -21 29 07.55 25.1r 22LO17 266 C~6Ipd 2022 06 02.61096 19 15 20.820 -21 29 08.05 25.1r 22LO17 266 C~6Ipd 2022 06 03.44086 19 15 17.810 -21 29 13.35 24.9r 22LO17 266 C~6Ipd 2022 06 03.52767 19 15 17.485 -21 29 13.92 24.9r 22LO17 266 C~6Ipd 2022 06 03.61505 19 15 17.157 -21 29 14.47 24.9r 22LO17 266 C~6Ipd 2022 06 29.45230 19 13 28.124 -21 32 29.43 24.8r 22LO17 266 C~6Ipd 2022 06 29.51672 19 13 27.822 -21 32 29.96 24.8r 22LO17 266 C~6Ipd 2022 06 29.58117 19 13 27.521 -21 32 30.48 24.8r 22LO17 266 C~6Ipd 2022 06 30.45132 19 13 23.519 -21 32 37.80 25.0r 22LO17 266 C~6Ipd 2022 06 30.51752 19 13 23.208 -21 32 38.35 25.0r 22LO17 266 C~6Ipd 2022 06 30.58389 19 13 22.897 -21 32 38.89 25.0r 22LO17 266 C~6Ipd 2023 09 09.22891 19 13 44.049 -21 35 40.82 23.2V 22LO17 266 C~7umS 2023 09 09.32430 19 13 43.854 -21 35 41.27 23.2V 22LO17 266 C~7umS 2023 09 09.41985 19 13 43.662 -21 35 41.70 23.2V 22LO17 266 C~7umS 2023 09 10.22905 19 13 42.127 -21 35 45.61 23.3V 22LO17 266 C~7umS 2023 09 10.32490 19 13 41.939 -21 35 46.05 23.3V 22LO17 266 C~7umS 2023 09 10.42059 19 13 41.754 -21 35 46.46 23.3V 22LO17 266 C~7umS
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 0.00 0.00 -0.04
2 0.0002 -2.32 0.00 -0.11 -0.04
3 0.0004 -4.65 -0.01 -0.19 -0.04
4 0.7371 9463.55 -0.01 -92.99 0.01
5 0.7373 9459.03 0.00 -92.97 0.01
6 0.7375 9454.84 -0.01 -92.94 0.01
7 0.7398 9412.41 -0.00 -92.83 -0.01
8 0.7400 9407.83 -0.00 -92.82 -0.01
9 0.7403 9403.21 -0.00 -92.78 -0.01
10 0.8110 7866.53 -0.01 -94.07 0.03
11 0.8112 7862.28 -0.01 -94.07 0.04
12 0.8114 7858.04 -0.01 -94.06 0.04
13 0.8137 7801.64 0.02 -94.36 0.03
14 0.8139 7797.26 0.02 -94.37 0.03
15 0.8141 7792.89 0.03 -94.36 0.03
16 2.0068 8063.30 0.01 -311.90 0.02
17 2.0071 8060.55 0.01 -312.01 0.02
18 2.0074 8057.83 0.01 -312.10 0.02
19 2.0096 8036.07 -0.01 -313.30 -0.05
20 2.0098 8033.41 -0.01 -313.40 -0.05
21 2.0101 8030.79 -0.02 -313.49 -0.04
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.
22LO17 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.859 43.939 43.804 ecceobj 0.053 0.052 0.059 incobj 2.343 2.344 2.342 qmin 40.694 40.841 40.324 qmax 47.716 47.711 47.923 amean 44.083 44.169 44.023 amin 43.733 43.819 43.670 amax 44.454 44.530 44.398 emean 0.058 0.056 0.064 emin 0.042 0.040 0.048 emax 0.074 0.072 0.080 imean 1.509 1.459 1.575 imin 0.804 0.774 0.841 imax 2.164 2.112 2.232 excite_mean 0.064 0.062 0.070 fracstop 1.000 1.000 1.000 cjmean 3.098 3.099 3.096 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 188.7 193.6 185.4 kozaiamp 179.9 180.0 180.0