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: 21LX44
# Created Sun Dec 22 02:11:18 2024
# Orbit generated from Bernstein formalism
# Fitting 19 observations of 19
# Arc: 1.50y
# First observation: 2021/04/23
# Last observation: 2022/10/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000128 0.029920 -0.000005 -0.001440 0.027786 0.000000
# Chi-squared of fit: 0.87 DOF: 32 RMS: 0.04
# Min/Max residuals: -0.20 0.04
# Exact a, adot, b, bdot, g, gdot:
1.680211E-05 2.950050E-02 1.482522E-07 -1.475088E-03 2.762073E-02 4.253433E-03
# Covariance matrix:
1.3136E-12 5.2236E-13 1.0615E-13 -8.2792E-13 3.3736E-12 3.1680E-10
5.2236E-13 7.4705E-13 3.7845E-14 -3.2994E-13 1.6948E-12 1.2846E-10
1.0615E-13 3.7845E-14 2.0479E-13 -2.4541E-13 3.6404E-13 3.8696E-11
-8.2792E-13 -3.2994E-13 -2.4541E-13 9.4385E-13 -2.7769E-12 -2.8970E-10
3.3736E-12 1.6948E-12 3.6404E-13 -2.7769E-12 1.0687E-11 1.0586E-09
3.1680E-10 1.2846E-10 3.8696E-11 -2.8970E-10 1.0586E-09 1.1008E-07
# lat0 lon0 xBary yBary zBary JD0
1.498970 -72.594481 0.973619 0.006763 -0.264144 2459327.797186
# Heliocentric elements and errors
Epoch: 2459320.5000 = 2021/04/16
Mean Anomaly: 47.03078 +/- 1.240
Argument of Peri: 91.62503 +/- 2.274
Long of Asc Node: 133.79281 +/- 0.009
Inclination: 3.17523 +/- 0.001
Eccentricity: 0.14159198 +/- 0.0105
Semi-Major Axis: 39.83710451 +/- 0.1276
Time of Perihelion: 2447322.4754 +/- 310.9
Perihelion: 34.19648981 +/- 0.4334
Aphelion: 45.47771920 +/- 0.4439
Period (y) 251.4432 +/- 1.21
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 9.98425764 +/- 0.0012
Ecliptic Y -35.08360002 +/- 0.0041
Ecliptic Z 0.94710308 +/- 0.0001
Ecliptic XDOT 0.00292347 +/- 0.0000
Ecliptic YDOT 0.00047568 +/- 0.0000
Ecliptic ZDOT -0.00013533 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.48892154 +/- 0.0040
Geocenter to KBO 36.20469186 +/- 0.0043
# Hcoef: 6.92
The following table shows the complete astrometric record for 21LX44. 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 (21LX44) followed by the observatory code and reference code for the source of the astrometry.
2021 04 23.296385 19 14 37.95 -20 49 12.0 21LX44 W84 C~6pyQ 2021 06 09.44201 19 12 18.227 -20 52 25.83 23.1r 21LX44 266 C~6Ip3 2021 06 09.52601 19 12 17.807 -20 52 26.52 23.1r 21LX44 266 C~6Ip3 2021 06 09.61426 19 12 17.366 -20 52 27.22 23.1r 21LX44 266 C~6Ip3 2021 06 17.43605 19 11 37.401 -20 53 34.73 23.0r 21LX44 266 C~6Ip3 2021 06 17.50053 19 11 37.052 -20 53 35.32 23.0r 21LX44 266 C~6Ip3 2021 06 17.57953 19 11 36.626 -20 53 36.03 23.0r 21LX44 266 C~6Ip3 2021 09 06.23258 19 05 07.037 -21 06 29.04 23.5r 21LX44 266 C~6Ip3 2021 09 06.31281 19 05 06.842 -21 06 29.57 23.5r 21LX44 266 C~6Ip3 2021 09 06.39352 19 05 06.648 -21 06 30.09 23.5r 21LX44 266 C~6Ip3 2022 10 20.21696 19 12 21.803 -21 01 45.89 22.2V 21LX44 266 C~7um8 2022 10 20.26058 19 12 21.906 -21 01 45.83 22.2V 21LX44 266 C~7um8 2022 10 20.29842 19 12 21.996 -21 01 45.77 22.2V 21LX44 266 C~7um8 2022 10 21.20926 19 12 24.285 -21 01 44.56 21.9V 21LX44 266 C~7um8 2022 10 21.25420 19 12 24.396 -21 01 44.49 21.9V 21LX44 266 C~7um8 2022 10 21.29846 19 12 24.507 -21 01 44.41 21.9V 21LX44 266 C~7um8 2022 10 23.20599 19 12 29.620 -21 01 41.40 22.1V 21LX44 266 C~7um8 2022 10 23.25093 19 12 29.741 -21 01 41.31 22.1V 21LX44 266 C~7um8 2022 10 23.29489 19 12 29.861 -21 01 41.21 22.1V 21LX44 266 C~7um8
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 -0.20
2 0.1291 -1967.54 -0.00 53.53 0.03
3 0.1293 -1973.46 -0.00 53.57 0.03
4 0.1295 -1979.69 0.00 53.64 0.04
5 0.1510 -2543.90 -0.00 55.64 0.02
6 0.1511 -2548.82 -0.01 55.65 0.02
7 0.1514 -2554.84 -0.01 55.68 0.02
8 0.3722 -8067.50 0.00 -70.39 0.02
9 0.3724 -8070.28 0.00 -70.61 0.03
10 0.3726 -8073.04 0.01 -70.82 0.02
11 1.4919 -1987.14 -0.00 -508.45 -0.03
12 1.4920 -1985.70 -0.00 -508.57 -0.03
13 1.4921 -1984.45 -0.00 -508.67 -0.03
14 1.4946 -1952.49 0.00 -511.43 0.03
15 1.4948 -1950.94 -0.00 -511.56 0.02
16 1.4949 -1949.39 0.01 -511.67 0.03
17 1.5001 -1877.97 0.00 -517.56 -0.00
18 1.5002 -1876.28 -0.01 -517.68 -0.01
19 1.5003 -1874.60 -0.00 -517.79 -0.00
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.
21LX44 quality flag:1 Type: 3:2E CENTAURR SCATNEAR axisobj 39.328 39.947 38.790 ecceobj 0.135 0.164 0.105 incobj 3.180 3.182 3.177 qmin 33.167 30.136 32.319 qmax 46.291 62.237 47.767 amean 39.458 42.488 39.367 amin 38.986 31.851 38.709 amax 39.965 47.348 40.264 emean 0.141 0.239 0.143 emin 0.121 0.007 0.096 emax 0.159 0.319 0.188 imean 2.562 1.961 2.415 imin 1.663 0.383 0.678 imax 3.380 4.049 3.914 excite_mean 0.148 0.242 0.149 fracstop 1.000 0.514 1.000 cjmean 3.027 3.012 3.026 libcent 0 180.2 -180.0 -180.0 libamp 0 103.8 -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 183.5 179.8 177.9 kozaiamp 180.0 179.8 180.0