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: 21LC44
# Created Wed Dec 25 02:11:13 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 27 observations of 27
# Arc: 8.33y
# First observation: 2014/06/25
# Last observation: 2022/10/23
# Chi-squared of fit: 0.51 DOF: 48 RMS: 0.02
# Min/Max residuals: -0.05 0.03
# Exact a, adot, b, bdot, g, gdot:
1.379784E-05 1.822496E-02 -3.050388E-07 -5.510242E-04 2.093625E-02 2.180450E-03
# Covariance matrix:
2.4373E-13 -6.6060E-14 -2.1398E-16 1.0906E-15 -3.5832E-14 -2.5010E-13
-6.6060E-14 6.6720E-13 6.1892E-15 -2.3763E-14 2.5194E-13 5.1325E-12
-2.1398E-16 6.1892E-15 2.3937E-13 -3.1601E-14 1.3945E-15 4.8800E-14
1.0906E-15 -2.3763E-14 -3.1601E-14 6.2350E-15 -7.6971E-15 -1.8541E-13
-3.5832E-14 2.5194E-13 1.3945E-15 -7.6971E-15 2.9295E-13 1.7891E-12
-2.5010E-13 5.1325E-12 4.8800E-14 -1.8541E-13 1.7891E-12 3.9940E-11
# lat0 lon0 xBary yBary zBary JD0
1.756437 -80.054434 0.112301 0.031077 -1.011650 2456833.840208
# Heliocentric elements and errors
Epoch: 2456834.5000 = 2014/06/26
Mean Anomaly: 107.78827 +/- 0.108
Argument of Peri: 13.96545 +/- 0.095
Long of Asc Node: 144.69824 +/- 0.003
Inclination: 2.43674 +/- 0.000
Eccentricity: 0.12943760 +/- 0.0003
Semi-Major Axis: 46.28617297 +/- 0.0060
Time of Perihelion: 2422395.9900 +/- 35.1
Perihelion: 40.29500195 +/- 0.0129
Aphelion: 52.27734399 +/- 0.0136
Period (y) 314.9090 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 8.30844692 +/- 0.0002
Ecliptic Y -48.03863162 +/- 0.0012
Ecliptic Z 1.46405360 +/- 0.0000
Ecliptic XDOT 0.00239194 +/- 0.0000
Ecliptic YDOT 0.00012490 +/- 0.0000
Ecliptic ZDOT -0.00006316 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 48.77372540 +/- 0.0012
Geocenter to KBO 47.76398776 +/- 0.0012
# Hcoef: 8.50
The following table shows the complete astrometric record for 21LC44. 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 (21LC44) followed by the observatory code and reference code for the source of the astrometry.
2014 06 25.33943 18 42 42.967 -21 18 53.71 25.0r 21LC44 266 C~7um8 2014 06 25.45033 18 42 42.466 -21 18 54.24 25.0r 21LC44 266 C~7um8 2014 06 25.56643 18 42 41.941 -21 18 54.76 25.0r 21LC44 266 C~7um8 2014 06 27.34219 18 42 34.038 -21 19 03.07 25.2r 21LC44 266 C~7um8 2014 06 27.36877 18 42 33.918 -21 19 03.20 25.2r 21LC44 266 C~7um8 2014 06 27.39518 18 42 33.798 -21 19 03.33 25.2r 21LC44 266 C~7um8 2021 06 09.44201 19 14 37.581 -20 47 43.58 26.1r 21LC44 266 C~6Ip2 2021 06 09.52601 19 14 37.260 -20 47 44.11 26.1r 21LC44 266 C~6Ip2 2021 06 09.61426 19 14 36.924 -20 47 44.63 26.1r 21LC44 266 C~6Ip2 2021 06 17.43605 19 14 06.447 -20 48 35.52 26.3r 21LC44 266 C~6Ip2 2021 06 17.50053 19 14 06.182 -20 48 35.97 26.3r 21LC44 266 C~6Ip2 2021 06 17.57953 19 14 05.857 -20 48 36.50 26.3r 21LC44 266 C~6Ip2 2021 07 05.35106 19 12 50.430 -20 50 48.82 25.9r 21LC44 266 C~6Ip2 2021 07 05.43951 19 12 50.037 -20 50 49.53 25.9r 21LC44 266 C~6Ip2 2021 07 05.52517 19 12 49.656 -20 50 50.20 25.9r 21LC44 266 C~6Ip2 2021 09 06.23258 19 09 04.343 -20 58 29.34 26.2r 21LC44 266 C~6Ip2 2021 09 06.31281 19 09 04.180 -20 58 29.76 26.2r 21LC44 266 C~6Ip2 2021 09 06.39352 19 09 04.018 -20 58 30.16 26.2r 21LC44 266 C~6Ip2 2022 10 20.21696 19 13 11.376 -20 54 58.57 24.9V 21LC44 266 C~7um8 2022 10 20.26058 19 13 11.444 -20 54 58.53 24.9V 21LC44 266 C~7um8 2022 10 20.29842 19 13 11.503 -20 54 58.49 24.9V 21LC44 266 C~7um8 2022 10 21.20926 19 13 13.022 -20 54 57.77 24.5V 21LC44 266 C~7um8 2022 10 21.25420 19 13 13.096 -20 54 57.72 24.5V 21LC44 266 C~7um8 2022 10 21.29846 19 13 13.169 -20 54 57.67 24.5V 21LC44 266 C~7um8 2022 10 23.20599 19 13 16.596 -20 54 55.71 24.7V 21LC44 266 C~7um8 2022 10 23.25093 19 13 16.678 -20 54 55.65 24.7V 21LC44 266 C~7um8 2022 10 23.29489 19 13 16.758 -20 54 55.58 24.7V 21LC44 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 -0.02
2 0.0003 0.00 0.00 0.00 -0.02
3 0.0006 0.00 0.00 0.00 -0.02
4 0.0055 0.00 0.01 0.00 0.02
5 0.0056 0.00 0.02 0.00 0.02
6 0.0056 0.00 0.02 0.00 0.02
7 6.9572 0.00 -0.02 0.00 0.01
8 6.9574 0.00 -0.03 0.00 -0.00
9 6.9576 0.00 -0.02 0.00 0.01
10 6.9790 0.00 0.03 0.00 0.03
11 6.9792 0.00 0.03 0.00 0.02
12 6.9794 0.00 0.03 0.00 0.03
13 7.0281 0.00 -0.05 0.00 0.02
14 7.0283 0.00 -0.05 0.00 0.02
15 7.0286 0.00 -0.05 0.00 0.02
16 7.2003 0.00 0.00 0.00 -0.03
17 7.2005 0.00 0.00 0.00 -0.04
18 7.2007 0.00 0.01 0.00 -0.03
19 8.3200 0.00 0.01 0.00 0.01
20 8.3201 0.00 0.01 0.00 0.01
21 8.3202 0.00 0.01 0.00 0.01
22 8.3227 0.00 -0.03 0.00 0.00
23 8.3228 0.00 -0.03 0.00 0.01
24 8.3230 0.00 -0.03 0.00 0.00
25 8.3282 0.00 0.01 0.00 -0.04
26 8.3283 0.00 0.02 0.00 -0.04
27 8.3284 0.00 0.01 0.00 -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.
21LC44 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.224 46.225 46.224 ecceobj 0.125 0.125 0.125 incobj 2.432 2.432 2.432 qmin 39.802 39.814 39.780 qmax 53.481 53.504 53.471 amean 46.477 46.477 46.477 amin 46.092 46.083 46.085 amax 46.907 46.926 46.918 emean 0.127 0.127 0.127 emin 0.114 0.114 0.114 emax 0.141 0.141 0.140 imean 1.833 1.833 1.833 imin 1.323 1.322 1.323 imax 2.296 2.297 2.297 excite_mean 0.131 0.131 0.131 fracstop 1.000 1.000 1.000 cjmean 3.111 3.111 3.111 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 182.3 182.3 182.3 kozaiamp 179.9 180.0 180.0