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: 22LA17
# Created Mon Apr 28 01:11:31 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 1.27y
# First observation: 2022/06/03
# Last observation: 2023/09/10
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.024829 -0.000000 -0.000783 0.024512 0.000000
# Chi-squared of fit: 0.57 DOF: 24 RMS: 0.03
# Min/Max residuals: -0.05 0.08
# Exact a, adot, b, bdot, g, gdot:
1.591504E-05 2.468440E-02 -2.977259E-07 -7.887516E-04 2.440087E-02 -1.433990E-03
# Covariance matrix:
4.9371E-13 1.0251E-12 -6.0355E-17 -6.9396E-14 1.4703E-12 6.6445E-11
1.0251E-12 1.9562E-10 -3.7759E-12 8.1103E-11 -6.0313E-11 -6.8175E-08
-6.0355E-17 -3.7759E-12 2.5020E-13 -1.7540E-12 1.2988E-12 1.3523E-09
-6.9396E-14 8.1103E-11 -1.7540E-12 3.4940E-11 -2.8313E-11 -2.9154E-08
1.4703E-12 -6.0313E-11 1.2988E-12 -2.8313E-11 2.9408E-11 2.3847E-08
6.6445E-11 -6.8175E-08 1.3523E-09 -2.9154E-08 2.3847E-08 2.4519E-05
# lat0 lon0 xBary yBary zBary JD0
1.188897 -72.630182 0.587205 0.016913 -0.827937 2459733.941661
# Heliocentric elements and errors
Epoch: 2459730.5000 = 2022/05/31
Mean Anomaly: 325.53061 +/- 56.254
Argument of Peri: 190.45182 +/- 77.885
Long of Asc Node: 139.29262 +/- 0.072
Inclination: 2.15517 +/- 0.004
Eccentricity: 0.11869753 +/- 0.1458
Semi-Major Axis: 46.08727326 +/- 1.4500
Time of Perihelion: 2470672.6095 +/- 17850.1
Perihelion: 40.61682785 +/- 6.8419
Aphelion: 51.55771867 +/- 6.9145
Period (y) 312.8814 +/- 14.77
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 11.92848942 +/- 0.0027
Ecliptic Y -40.07230736 +/- 0.0087
Ecliptic Z 0.85038892 +/- 0.0002
Ecliptic XDOT 0.00259761 +/- 0.0002
Ecliptic YDOT 0.00098763 +/- 0.0005
Ecliptic ZDOT -0.00009193 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.81867810 +/- 0.0084
Geocenter to KBO 40.98213871 +/- 0.0091
# Hcoef: 9.93
The following table shows the complete astrometric record for 22LA17. 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 (22LA17) followed by the observatory code and reference code for the source of the astrometry.
2022 06 03.44086 19 14 38.997 -21 07 55.54 26.1r 22LA17 266 C~6Ipc 2022 06 03.52767 19 14 38.645 -21 07 56.13 26.1r 22LA17 266 C~6Ipc 2022 06 03.61505 19 14 38.290 -21 07 56.69 26.1r 22LA17 266 C~6Ipc 2022 06 29.45230 19 12 40.315 -21 11 19.89 26.0r 22LA17 266 C~6Ipc 2022 06 29.51813 19 12 39.981 -21 11 20.47 26.0r 22LA17 266 C~6Ipc 2022 06 29.58257 19 12 39.656 -21 11 21.02 26.0r 22LA17 266 C~6Ipc 2022 06 30.45132 19 12 35.326 -21 11 28.67 26.0r 22LA17 266 C~6Ipc 2022 06 30.51894 19 12 34.982 -21 11 29.27 26.0r 22LA17 266 C~6Ipc 2022 06 30.58528 19 12 34.646 -21 11 29.84 26.0r 22LA17 266 C~6Ipc 2023 09 09.22891 19 13 45.530 -21 13 29.35 22LA17 266 C~8ecH 2023 09 09.32430 19 13 45.326 -21 13 29.87 22LA17 266 C~8ecH 2023 09 09.41985 19 13 45.123 -21 13 30.38 22LA17 266 C~8ecH 2023 09 10.22905 19 13 43.514 -21 13 34.82 22LA17 266 C~8ecH 2023 09 10.32490 19 13 43.316 -21 13 35.33 22LA17 266 C~8ecH 2023 09 10.42059 19 13 43.122 -21 13 35.82 22LA17 266 C~8ecH
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 0.02 0.00 -0.04
2 0.0002 -4.96 0.00 0.04 -0.05
3 0.0005 -9.96 -0.01 0.12 -0.05
4 0.0712 -1672.75 -0.04 6.07 -0.02
5 0.0714 -1677.46 -0.04 6.08 -0.02
6 0.0716 -1682.03 -0.01 6.10 -0.02
7 0.0740 -1743.08 0.02 6.02 0.08
8 0.0741 -1747.93 0.03 6.03 0.07
9 0.0743 -1752.66 0.04 6.04 0.08
10 1.2670 -784.09 -0.03 -236.44 -0.01
11 1.2673 -786.98 -0.01 -236.59 -0.00
12 1.2676 -789.86 -0.02 -236.74 -0.01
13 1.2698 -812.74 0.03 -238.31 0.00
14 1.2700 -815.55 0.02 -238.47 0.01
15 1.2703 -818.31 0.02 -238.62 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.
22LA17 quality flag:1 Type: CLASSICAL CENTAURR CLASSICAL axisobj 45.633 67.610 45.608 ecceobj 0.114 0.614 0.111 incobj 2.157 2.142 2.157 qmin 39.923 25.858 40.027 qmax 52.177 114.013 51.965 amean 45.870 68.408 45.846 amin 45.489 67.485 45.466 amax 46.288 70.341 46.267 emean 0.113 0.614 0.110 emin 0.099 0.607 0.096 emax 0.127 0.623 0.124 imean 1.733 1.154 1.726 imin 1.139 1.128 1.139 imax 2.254 1.175 2.246 excite_mean 0.117 0.615 0.114 fracstop 1.000 0.003 1.000 cjmean 3.108 2.819 3.108 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 180.4 236.4 179.5 kozaiamp 180.0 1.6 179.9