Orbit Fit and Astrometric record for 22LB15

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: 22LB15    
# Created Tue Apr  1 01:11:29 2025
# 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   0.038913   0.000002   0.003621   0.032254   0.000000
# Chi-squared of fit:     0.07 DOF:     30 RMS:  0.01
# Min/Max residuals:    -0.02    0.02
# Exact a, adot, b, bdot, g, gdot:
  1.905747E-05  3.873656E-02  1.837928E-06  3.662990E-03  3.208049E-02  1.894563E-03
# Covariance matrix:
  2.5563E-13  1.0089E-12 -1.1867E-14  3.0918E-13  9.0784E-13  6.6505E-11
  1.0089E-12  1.4649E-10 -3.8514E-12  1.0943E-10  7.5054E-11  2.3867E-08
 -1.1867E-14 -3.8514E-12  2.3355E-13 -3.0681E-12 -1.9266E-12 -6.4581E-10
  3.0918E-13  1.0943E-10 -3.0681E-12  8.4479E-11  5.4660E-11  1.8376E-08
  9.0784E-13  7.5054E-11 -1.9266E-12  5.4660E-11  3.9471E-11  1.1919E-08
  6.6505E-11  2.3867E-08 -6.4581E-10  1.8376E-08  1.1919E-08  4.0090E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.878376  -73.142639    0.593580    0.012356   -0.823459  2459732.944521
# Heliocentric elements and errors
Epoch:              2459730.5000  =  2022/05/31
Mean Anomaly:            6.28253 +/-    11.201
Argument of Peri:      359.38510 +/-    17.259
Long of Asc Node:      276.84522 +/-     0.013
Inclination:             5.47533 +/-     0.008
Eccentricity:         0.20010728 +/-    0.0126
Semi-Major Axis:     39.91771822 +/-    0.2815
Time of Perihelion: 2458122.8953 +/-    2866.1
Perihelion:          31.92989239 +/-    0.5514
Aphelion:            47.90554405 +/-    0.6062
Period (y)              252.2068 +/-      2.67
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            8.71868167 +/-    0.0018
Ecliptic Y          -30.79077916 +/-    0.0058
Ecliptic Z            0.47799263 +/-    0.0001
Ecliptic XDOT         0.00321108 +/-    0.0000
Ecliptic YDOT         0.00081754 +/-    0.0002
Ecliptic ZDOT         0.00031494 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.00493663 +/-    0.0056
Geocenter to KBO     31.17159452 +/-    0.0061
# Hcoef: 10.39

The following table shows the complete astrometric record for 22LB15. 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 (22LB15) followed by the observatory code and reference code for the source of the astrometry.

2022 06  02.44372  19 12 38.093  -21 30 16.32  25.4r 22LB15    266  C~6Ipa      
2022 06  02.53086  19 12 37.652  -21 30 16.82  25.4r 22LB15    266  C~6Ipa      
2022 06  02.61096  19 12 37.245  -21 30 17.25  25.4r 22LB15    266  C~6Ipa      
2022 06  03.44086  19 12 33.119  -21 30 21.90  25.5r 22LB15    266  C~6Ipa      
2022 06  03.52767  19 12 32.673  -21 30 22.41  25.5r 22LB15    266  C~6Ipa      
2022 06  03.61505  19 12 32.222  -21 30 22.89  25.5r 22LB15    266  C~6Ipa      
2022 06  29.45230  19 10 01.743  -21 33 29.69  25.1r 22LB15    266  C~6Ipa      
2022 06  29.52231  19 10 01.289  -21 33 30.27  25.1r 22LB15    266  C~6Ipa      
2022 06  29.59237  19 10 00.836  -21 33 30.83  25.1r 22LB15    266  C~6Ipa      
2022 06  30.45132  19 09 55.372  -21 33 38.08  25.4r 22LB15    266  C~6Ipa      
2022 06  30.53436  19 09 54.832  -21 33 38.76  25.4r 22LB15    266  C~6Ipa      
2022 06  30.61476  19 09 54.311  -21 33 39.40  25.4r 22LB15    266  C~6Ipa      
2023 09  09.22891  19 13 08.896  -21 13 57.38        22LB15    266  C~8ecH      
2023 09  09.32430  19 13 08.652  -21 13 57.77        22LB15    266  C~8ecH      
2023 09  09.41985  19 13 08.410  -21 13 58.13        22LB15    266  C~8ecH      
2023 09  10.22905  19 13 06.498  -21 14 01.46        22LB15    266  C~8ecH      
2023 09  10.32490  19 13 06.264  -21 14 01.83        22LB15    266  C~8ecH      
2023 09  10.42059  19 13 06.033  -21 14 02.18        22LB15    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     0.01       0.00    -0.01
     2   0.0002     -6.17     0.01       0.27    -0.01
     3   0.0005    -11.86     0.00       0.54    -0.00
     4   0.0027    -69.57    -0.01       3.06     0.00
     5   0.0030    -75.81    -0.00       3.33     0.00
     6   0.0032    -82.12    -0.01       3.63     0.01
     7   0.0739  -2188.97    -0.01      74.04     0.02
     8   0.0741  -2195.33    -0.01      74.22     0.02
     9   0.0743  -2201.67    -0.01      74.42     0.02
    10   0.0767  -2278.23     0.01      76.35    -0.02
    11   0.0769  -2285.79     0.01      76.58    -0.02
    12   0.0771  -2293.08     0.01      76.81    -0.02
    13   1.2698    548.71     0.00     917.82    -0.01
    14   1.2700    545.28     0.01     917.86    -0.00
    15   1.2703    541.88     0.01     917.93    -0.00
    16   1.2725    514.94    -0.01     917.96     0.00
    17   1.2728    511.64    -0.00     918.00     0.01
    18   1.2730    508.40    -0.01     918.05     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.

22LB15    quality flag:1

Type:       SCATNEAR  CENTAURR  CENTAURR

axisobj        39.468    45.645    36.698
ecceobj         0.193     0.348     0.145
incobj          5.490     5.517     5.461
qmin           31.138    29.533    29.963
qmax           48.592    61.545    47.364
amean          39.448    45.578    36.753
amin           38.865    45.508    31.829
amax           40.118    45.645    39.342
emean           0.139     0.348     0.127
emin            0.075     0.346     0.002
emax            0.214     0.351     0.210
imean          13.755     7.125     8.082
imin            7.020     7.074     5.997
imax           18.921     7.148    10.008
excite_mean     0.282     0.370     0.191
fracstop        1.000     0.001     0.578
cjmean          2.955     2.950     2.988

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       125.2     339.6     182.2
kozaiamp        180.0       0.8     179.9