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: 22LA15
# Created Sat May 4 01:18:59 2024
# Orbit generated from Bernstein formalism
# Fitting 18 observations of 18
# Arc: 1.27y
# First observation: 2022/06/02
# Last observation: 2023/09/10
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.025616 -0.000005 -0.008984 0.026205 0.000000
# Chi-squared of fit: 0.49 DOF: 30 RMS: 0.03
# Min/Max residuals: -0.05 0.05
# Exact a, adot, b, bdot, g, gdot:
1.566500E-05 2.541844E-02 -5.477951E-06 -9.077714E-03 2.607049E-02 1.673703E-03
# Covariance matrix:
2.5484E-13 5.6713E-13 3.3300E-15 -1.2335E-13 7.2211E-13 1.0527E-11
5.6713E-13 1.9131E-11 -1.3279E-12 3.7764E-11 1.4006E-12 -3.1831E-09
3.3300E-15 -1.3279E-12 2.4847E-13 -3.5028E-12 2.3908E-13 2.8622E-10
-1.2335E-13 3.7764E-11 -3.5028E-12 9.7212E-11 -6.9898E-12 -8.1752E-09
7.2211E-13 1.4006E-12 2.3908E-13 -6.9898E-12 4.5706E-12 5.9003E-10
1.0527E-11 -3.1831E-09 2.8622E-10 -8.1752E-09 5.9003E-10 6.8924E-07
# lat0 lon0 xBary yBary zBary JD0
0.913161 -72.857610 0.597670 0.012809 -0.820488 2459732.944521
# Heliocentric elements and errors
Epoch: 2459730.5000 = 2022/05/31
Mean Anomaly: 29.78238 +/- 14.675
Argument of Peri: 142.31016 +/- 18.061
Long of Asc Node: 108.78969 +/- 0.002
Inclination: 19.61355 +/- 0.013
Eccentricity: 0.08375618 +/- 0.0195
Semi-Major Axis: 42.17056840 +/- 0.1697
Time of Perihelion: 2451455.4704 +/- 4077.2
Perihelion: 38.63852258 +/- 0.8368
Aphelion: 45.70261422 +/- 0.8425
Period (y) 273.8561 +/- 1.65
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 10.98464650 +/- 0.0009
Ecliptic Y -37.61100322 +/- 0.0030
Ecliptic Z 0.61117006 +/- 0.0000
Ecliptic XDOT 0.00260881 +/- 0.0000
Ecliptic YDOT 0.00061333 +/- 0.0001
Ecliptic ZDOT -0.00095050 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.18703294 +/- 0.0029
Geocenter to KBO 38.35754031 +/- 0.0031
# Hcoef: 9.66
The following table shows the complete astrometric record for 22LA15. 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 (22LA15) followed by the observatory code and reference code for the source of the astrometry.
2022 06 02.44372 19 13 49.894 -21 26 03.86 26.0r 22LA15 266 C~6Ipa 2022 06 02.53086 19 13 49.522 -21 26 04.89 26.0r 22LA15 266 C~6Ipa 2022 06 02.61096 19 13 49.180 -21 26 05.82 26.0r 22LA15 266 C~6Ipa 2022 06 03.44086 19 13 45.698 -21 26 15.58 26.0r 22LA15 266 C~6Ipa 2022 06 03.52767 19 13 45.322 -21 26 16.62 26.0r 22LA15 266 C~6Ipa 2022 06 03.61505 19 13 44.943 -21 26 17.64 26.0r 22LA15 266 C~6Ipa 2022 06 29.45230 19 11 38.406 -21 31 58.44 26.0r 22LA15 266 C~6Ipa 2022 06 29.51953 19 11 38.039 -21 31 59.39 26.0r 22LA15 266 C~6Ipa 2022 06 29.58817 19 11 37.666 -21 32 00.34 26.0r 22LA15 266 C~6Ipa 2022 06 30.45132 19 11 33.052 -21 32 12.61 26.0r 22LA15 266 C~6Ipa 2022 06 30.52313 19 11 32.660 -21 32 13.62 26.0r 22LA15 266 C~6Ipa 2022 06 30.59513 19 11 32.267 -21 32 14.62 26.0r 22LA15 266 C~6Ipa 2023 09 09.22891 19 12 50.527 -22 07 47.21 24.6V 22LA15 266 C~7umS 2023 09 09.32430 19 12 50.310 -22 07 48.09 24.6V 22LA15 266 C~7umS 2023 09 09.41985 19 12 50.095 -22 07 48.95 24.6V 22LA15 266 C~7umS 2023 09 10.22905 19 12 48.382 -22 07 56.35 24.9V 22LA15 266 C~7umS 2023 09 10.32490 19 12 48.173 -22 07 57.22 24.9V 22LA15 266 C~7umS 2023 09 10.42059 19 12 47.968 -22 07 58.05 24.9V 22LA15 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 -0.05 0.00 -0.01
2 0.0002 -5.28 -0.04 -0.37 -0.00
3 0.0005 -10.14 -0.03 -0.69 -0.00
4 0.0027 -59.60 0.03 -4.25 0.01
5 0.0030 -64.93 0.04 -4.62 0.01
6 0.0032 -70.31 0.05 -4.97 0.02
7 0.0739 -1865.17 0.04 -123.86 -0.00
8 0.0741 -1870.37 0.02 -124.17 -0.01
9 0.0743 -1875.65 0.02 -124.48 -0.00
10 0.0767 -1941.05 -0.02 -128.78 -0.01
11 0.0769 -1946.60 -0.02 -129.11 -0.01
12 0.0771 -1952.17 -0.03 -129.43 -0.00
13 1.2698 -1133.81 0.04 -2380.29 -0.02
14 1.2700 -1136.91 0.05 -2380.79 -0.02
15 1.2703 -1139.98 0.04 -2381.27 -0.03
16 1.2725 -1164.52 -0.05 -2385.66 0.02
17 1.2728 -1167.51 -0.05 -2386.16 0.02
18 1.2730 -1170.44 -0.04 -2386.63 0.03
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.
22LA15 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.776 43.138 41.000 ecceobj 0.077 0.152 0.047 incobj 19.657 19.701 19.613 qmin 37.940 35.978 38.354 qmax 46.382 51.211 44.359 amean 42.040 43.425 41.238 amin 41.709 43.067 40.924 amax 42.393 43.814 41.577 emean 0.080 0.152 0.048 emin 0.066 0.136 0.033 emax 0.095 0.169 0.067 imean 17.923 18.082 17.900 imin 17.391 17.486 17.265 imax 18.575 18.741 18.527 excite_mean 0.318 0.346 0.311 fracstop 1.000 1.000 1.000 cjmean 2.958 2.951 2.955 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 179.7 188.4 183.4 kozaiamp 180.0 180.0 180.0