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: 21LE44
# Created Sun Apr 27 01:11:26 2025
# Orbit generated from Bernstein formalism
# Fitting 21 observations of 21
# Arc: 1.37y
# First observation: 2021/06/09
# Last observation: 2022/10/23
Preliminary a, adot, b, bdot, g, gdot:
-0.000030 0.020909 -0.000002 -0.000997 0.022511 0.000000
# Chi-squared of fit: 0.51 DOF: 36 RMS: 0.03
# Min/Max residuals: -0.08 0.04
# Exact a, adot, b, bdot, g, gdot:
1.469244E-05 2.098743E-02 -6.938857E-07 -1.023371E-03 2.266977E-02 -1.404247E-03
# Covariance matrix:
3.4296E-13 1.6945E-13 2.2923E-14 -3.4816E-13 1.2494E-12 2.0933E-10
1.6945E-13 6.8362E-13 1.5940E-14 -2.4108E-13 1.2504E-12 1.4674E-10
2.2923E-14 1.5940E-14 1.4317E-13 -1.7577E-13 1.9417E-13 4.0006E-11
-3.4816E-13 -2.4108E-13 -1.7577E-13 1.1936E-12 -2.9527E-12 -6.0872E-10
1.2494E-12 1.2504E-12 1.9417E-13 -2.9527E-12 9.2389E-12 1.7690E-09
2.0933E-10 1.4674E-10 4.0006E-11 -6.0872E-10 1.7690E-09 3.6406E-07
# lat0 lon0 xBary yBary zBary JD0
0.652936 -72.851740 0.492130 0.009861 -0.884131 2459374.942811
# Heliocentric elements and errors
Epoch: 2459370.5000 = 2021/06/05
Mean Anomaly: 267.20536 +/- 4.521
Argument of Peri: 268.88283 +/- 3.976
Long of Asc Node: 119.47329 +/- 0.008
Inclination: 2.85518 +/- 0.002
Eccentricity: 0.07988854 +/- 0.0276
Semi-Major Axis: 44.55189014 +/- 0.1921
Time of Perihelion: 2487367.9218 +/- 1351.9
Perihelion: 40.99270468 +/- 1.2440
Aphelion: 48.11107561 +/- 1.2487
Period (y) 297.3770 +/- 1.92
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 12.80396597 +/- 0.0017
Ecliptic Y -43.14265126 +/- 0.0057
Ecliptic Z 0.50272615 +/- 0.0001
Ecliptic XDOT 0.00237798 +/- 0.0000
Ecliptic YDOT 0.00091516 +/- 0.0001
Ecliptic ZDOT -0.00012571 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.00536230 +/- 0.0054
Geocenter to KBO 44.11160937 +/- 0.0059
# Hcoef: 8.35
The following table shows the complete astrometric record for 21LE44. 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 (21LE44) followed by the observatory code and reference code for the source of the astrometry.
2021 06 09.44201 19 13 59.864 -21 41 30.53 25.4r 21LE44 266 C~6Ip2 2021 06 09.52601 19 13 59.514 -21 41 31.16 25.4r 21LE44 266 C~6Ip2 2021 06 09.61426 19 13 59.146 -21 41 31.80 25.4r 21LE44 266 C~6Ip2 2021 06 17.43605 19 13 25.820 -21 42 32.26 25.4r 21LE44 266 C~6Ip2 2021 06 17.50053 19 13 25.529 -21 42 32.78 25.4r 21LE44 266 C~6Ip2 2021 06 17.57953 19 13 25.174 -21 42 33.40 25.4r 21LE44 266 C~6Ip2 2021 07 05.35106 19 12 02.631 -21 45 04.27 25.2r 21LE44 266 C~6Ip2 2021 07 05.43951 19 12 02.200 -21 45 05.06 25.2r 21LE44 266 C~6Ip2 2021 07 05.52517 19 12 01.783 -21 45 05.81 25.2r 21LE44 266 C~6Ip2 2021 09 06.23258 19 07 56.488 -21 52 58.28 25.8r 21LE44 266 C~6Ip2 2021 09 06.31281 19 07 56.314 -21 52 58.66 25.8r 21LE44 266 C~6Ip2 2021 09 06.39352 19 07 56.141 -21 52 59.02 25.8r 21LE44 266 C~6Ip2 2022 10 20.21696 19 12 56.168 -21 49 01.65 24.2V 21LE44 266 C~7um8 2022 10 20.26058 19 12 56.246 -21 49 01.55 24.2V 21LE44 266 C~7um8 2022 10 20.29842 19 12 56.315 -21 49 01.47 24.2V 21LE44 266 C~7um8 2022 10 21.20926 19 12 58.064 -21 48 59.54 24.1V 21LE44 266 C~7um8 2022 10 21.25420 19 12 58.149 -21 48 59.43 24.1V 21LE44 266 C~7um8 2022 10 21.29846 19 12 58.233 -21 48 59.33 24.1V 21LE44 266 C~7um8 2022 10 23.20599 19 13 02.166 -21 48 55.02 24.3V 21LE44 266 C~7um8 2022 10 23.25093 19 13 02.259 -21 48 54.90 24.3V 21LE44 266 C~7um8 2022 10 23.29489 19 13 02.351 -21 48 54.78 24.3V 21LE44 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 -0.01 0.00 -0.00
2 0.0002 -4.92 -0.01 -0.01 -0.01
3 0.0005 -10.09 -0.01 0.00 -0.01
4 0.0219 -478.47 0.02 -1.57 -0.02
5 0.0221 -482.56 0.01 -1.57 -0.01
6 0.0223 -487.54 0.02 -1.57 -0.01
7 0.0709 -1647.57 -0.00 -8.43 0.01
8 0.0712 -1653.62 -0.01 -8.47 0.01
9 0.0714 -1659.48 -0.01 -8.50 0.00
10 0.2431 -5108.37 -0.00 -68.43 0.02
11 0.2433 -5110.82 -0.00 -68.53 0.02
12 0.2435 -5113.25 0.01 -68.60 0.02
13 1.3628 -936.96 0.02 -336.31 -0.08
14 1.3630 -935.87 0.01 -336.35 -0.08
15 1.3631 -934.90 0.02 -336.39 -0.08
16 1.3656 -910.50 -0.01 -337.51 0.04
17 1.3657 -909.31 -0.01 -337.54 0.04
18 1.3658 -908.13 -0.01 -337.59 0.04
19 1.3710 -853.25 -0.00 -340.14 0.04
20 1.3711 -851.95 -0.01 -340.18 0.04
21 1.3713 -850.67 -0.01 -340.22 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.
21LE44 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.071 44.595 43.973 ecceobj 0.084 0.155 0.039 incobj 2.860 2.855 2.862 qmin 39.573 36.280 41.478 qmax 49.245 53.698 47.080 amean 44.273 44.790 44.189 amin 43.918 44.389 43.849 amax 44.651 45.243 44.543 emean 0.087 0.166 0.042 emin 0.071 0.143 0.027 emax 0.103 0.188 0.057 imean 1.869 2.663 1.686 imin 1.038 0.975 1.057 imax 2.598 4.354 2.301 excite_mean 0.093 0.173 0.052 fracstop 1.000 1.000 1.000 cjmean 3.094 3.074 3.101 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 181.5 178.0 178.2 kozaiamp 180.0 180.0 179.9