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: 22LW15
# Created Wed Nov 27 02:11:11 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 26.14d
# First observation: 2022/06/03
# Last observation: 2022/06/29
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.025838 -0.000000 -0.007464 0.028182 0.000000
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 21 iterations -- oscilliatory solution
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 0.04 DOF: 7 RMS: 0.01
# Min/Max residuals: -0.02 0.03
# Exact a, adot, b, bdot, g, gdot:
1.509560E-05 2.730791E-02 -4.153238E-06 -7.443793E-03 2.834412E-02 1.014533E-02
# Covariance matrix:
2.1707E-10 4.0733E-07 -1.9823E-12 -2.5598E-09 7.0805E-08 -6.4029E-07
4.0733E-07 7.6610E-04 -3.7279E-09 -4.8134E-06 1.3316E-04 -1.2061E-03
-1.9823E-12 -3.7279E-09 5.0342E-13 1.6653E-11 -6.4815E-10 5.7711E-09
-2.5598E-09 -4.8134E-06 1.6653E-11 3.0563E-08 -8.3708E-07 7.3283E-06
7.0805E-08 1.3316E-04 -6.4815E-10 -8.3708E-07 2.3148E-05 -2.0884E-04
-6.4029E-07 -1.2061E-03 5.7711E-09 7.3283E-06 -2.0884E-04 2.3844E-03
# lat0 lon0 xBary yBary zBary JD0
0.984575 -72.219003 0.593133 0.013888 -0.823757 2459733.941661
# Heliocentric elements and errors
Epoch: 2459730.5000 = 2022/05/31
Mean Anomaly: 66.24487 +/- 88.065
Argument of Peri: 72.80180 +/- 158.896
Long of Asc Node: 110.40906 +/- 3.227
Inclination: 15.14532 +/- 13.775
Eccentricity: 0.32112188 +/- 1.7015
Semi-Major Axis: 37.24427356 +/- 19.2871
Time of Perihelion: 2444453.5218 +/- 16481.2
Perihelion: 25.28432226 +/- 64.7112
Aphelion: 49.20422486 +/- 68.3035
Period (y) 227.2990 +/- 176.56
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 10.46868594 +/- 1.8281
Ecliptic Y -34.55789076 +/- 5.7019
Ecliptic Z 0.60616564 +/- 0.1029
Ecliptic XDOT 0.00281648 +/- 0.0010
Ecliptic YDOT -0.00013026 +/- 0.0053
Ecliptic ZDOT -0.00070219 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.11382887 +/- 5.4819
Geocenter to KBO 35.28068147 +/- 5.9887
# Hcoef: 9.46
The following table shows the complete astrometric record for 22LW15. 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 (22LW15) followed by the observatory code and reference code for the source of the astrometry.
2022 06 03.44086 19 16 30.724 -21 16 54.29 24.2r 22LW15 266 C~6Ipb 2022 06 03.52767 19 16 30.316 -21 16 55.32 24.2r 22LW15 266 C~6Ipb 2022 06 03.61505 19 16 29.903 -21 16 56.34 24.2r 22LW15 266 C~6Ipb 2022 06 29.45230 19 14 12.761 -21 22 37.45 25.7r 22LW15 266 C~6Ipb 2022 06 29.51532 19 14 12.389 -21 22 38.35 25.7r 22LW15 266 C~6Ipb 2022 06 29.57836 19 14 12.019 -21 22 39.23 25.7r 22LW15 266 C~6Ipb
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 0.03 0.00 0.00
2 0.0002 -5.79 0.01 -0.28 -0.00
3 0.0005 -11.64 -0.02 -0.54 -0.01
4 0.0712 -1955.87 -0.01 -92.50 0.00
5 0.0714 -1961.14 0.00 -92.73 -0.00
6 0.0716 -1966.38 0.03 -92.95 -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.
22LW15 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