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: 22LW16
# Created Mon Apr 28 01:11:31 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 1.27y
# First observation: 2022/06/02
# Last observation: 2023/09/10
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.023788 -0.000000 -0.000446 0.024274 0.000000
# Chi-squared of fit: 0.33 DOF: 24 RMS: 0.03
# Min/Max residuals: -0.05 0.06
# Exact a, adot, b, bdot, g, gdot:
1.547704E-05 2.364375E-02 -2.945862E-07 -4.479776E-04 2.415606E-02 -3.891715E-03
# Covariance matrix:
2.5842E-13 -6.3476E-13 4.4722E-15 -2.1604E-13 9.7717E-13 3.0530E-10
-6.3476E-13 5.1949E-10 -2.1726E-12 8.7697E-11 -8.5822E-11 -1.2159E-07
4.4722E-15 -2.1726E-12 1.7849E-13 -5.0753E-13 3.8323E-13 5.1385E-10
-2.1604E-13 8.7697E-11 -5.0753E-13 1.5271E-11 -1.5828E-11 -2.0817E-08
9.7717E-13 -8.5822E-11 3.8323E-13 -1.5828E-11 2.3223E-11 2.2003E-08
3.0530E-10 -1.2159E-07 5.1385E-10 -2.0817E-08 2.2003E-08 2.8874E-05
# lat0 lon0 xBary yBary zBary JD0
1.091240 -73.042914 0.595013 0.015395 -0.822373 2459732.944521
# Heliocentric elements and errors
Epoch: 2459730.5000 = 2022/05/31
Mean Anomaly: 298.00629 +/- 11.075
Argument of Peri: 217.90648 +/- 10.064
Long of Asc Node: 151.04210 +/- 0.066
Inclination: 1.51598 +/- 0.002
Eccentricity: 0.18736771 +/- 0.2301
Semi-Major Axis: 44.79304327 +/- 3.8357
Time of Perihelion: 2478586.9265 +/- 2341.5
Perihelion: 36.40027339 +/- 10.7677
Aphelion: 53.18581315 +/- 11.2681
Period (y) 299.7948 +/- 38.51
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 11.75194117 +/- 0.0024
Ecliptic Y -40.55260576 +/- 0.0079
Ecliptic Z 0.78846153 +/- 0.0002
Ecliptic XDOT 0.00243668 +/- 0.0002
Ecliptic YDOT 0.00121148 +/- 0.0006
Ecliptic ZDOT -0.00005928 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.22846939 +/- 0.0076
Geocenter to KBO 41.39747492 +/- 0.0083
# Hcoef: 10.19
The following table shows the complete astrometric record for 22LW16. 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 (22LW16) followed by the observatory code and reference code for the source of the astrometry.
2022 06 02.44372 19 12 56.778 -21 16 51.35 26.4r 22LW16 266 C~6Ipc 2022 06 02.53086 19 12 56.429 -21 16 51.90 26.4r 22LW16 266 C~6Ipc 2022 06 02.61096 19 12 56.107 -21 16 52.39 26.4r 22LW16 266 C~6Ipc 2022 06 03.44086 19 12 52.839 -21 16 57.55 26.4r 22LW16 266 C~6Ipc 2022 06 03.52767 19 12 52.486 -21 16 58.11 26.4r 22LW16 266 C~6Ipc 2022 06 03.61505 19 12 52.130 -21 16 58.66 26.4r 22LW16 266 C~6Ipc 2022 06 29.45230 19 10 53.850 -21 20 14.15 26.3r 22LW16 266 C~6Ipc 2022 06 29.52093 19 10 53.502 -21 20 14.73 26.3r 22LW16 266 C~6Ipc 2022 06 29.58817 19 10 53.161 -21 20 15.28 26.3r 22LW16 266 C~6Ipc 2023 09 09.22891 19 11 44.947 -21 21 23.17 22LW16 266 C~8ecH 2023 09 09.32430 19 11 44.745 -21 21 23.65 22LW16 266 C~8ecH 2023 09 09.41985 19 11 44.544 -21 21 24.11 22LW16 266 C~8ecH 2023 09 10.22905 19 11 42.948 -21 21 28.34 22LW16 266 C~8ecH 2023 09 10.32490 19 11 42.753 -21 21 28.81 22LW16 266 C~8ecH 2023 09 10.42059 19 11 42.561 -21 21 29.26 22LW16 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 0.00 0.00 0.00
2 0.0002 -4.91 0.00 0.06 0.00
3 0.0005 -9.44 -0.00 0.14 -0.00
4 0.0027 -55.40 -0.00 0.70 0.02
5 0.0030 -60.36 0.00 0.76 0.02
6 0.0032 -65.37 -0.00 0.83 0.01
7 0.0739 -1729.80 -0.00 9.85 -0.02
8 0.0741 -1734.70 0.00 9.86 -0.02
9 0.0743 -1739.49 -0.00 9.89 -0.02
10 1.2698 -1029.64 -0.01 -145.71 0.05
11 1.2700 -1032.50 0.01 -145.84 0.06
12 1.2703 -1035.34 0.01 -145.96 0.06
13 1.2725 -1057.99 -0.01 -147.42 -0.05
14 1.2728 -1060.75 -0.00 -147.55 -0.05
15 1.2730 -1063.47 0.00 -147.67 -0.05
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.
22LW16 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0