Orbit Fit and Astrometric record for 22LK15

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: 22LK15    
# Created Tue Apr  1 01:11:29 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   0.024425  -0.000000  -0.001220   0.024260   0.000000
# Chi-squared of fit:     0.03 DOF:     24 RMS:  0.01
# Min/Max residuals:    -0.02    0.01
# Exact a, adot, b, bdot, g, gdot:
  1.585093E-05  2.427071E-02 -8.434988E-07 -1.228215E-03  2.414285E-02 -9.413245E-04
# Covariance matrix:
  2.5757E-13 -5.9721E-14  7.8237E-15 -3.6732E-13  9.4785E-13  2.1777E-10
 -5.9721E-14  2.2182E-10 -2.6065E-12  1.1044E-10 -5.1994E-11 -6.4854E-08
  7.8237E-15 -2.6065E-12  2.0087E-13 -1.4765E-12  7.0735E-13  7.8679E-10
 -3.6732E-13  1.1044E-10 -1.4765E-12  5.7181E-11 -3.0363E-11 -3.3434E-08
  9.4785E-13 -5.1994E-11  7.0735E-13 -3.0363E-11  2.2782E-11  1.7853E-08
  2.1777E-10 -6.4854E-08  7.8679E-10 -3.3434E-08  1.7853E-08  1.9639E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.002432  -72.333675    0.605148    0.013991   -0.814969  2459732.944521
# Heliocentric elements and errors
Epoch:              2459730.5000  =  2022/05/31
Mean Anomaly:          331.42669 +/-    68.866
Argument of Peri:      196.22176 +/-    89.200
Long of Asc Node:      125.68215 +/-     0.052
Inclination:             3.04360 +/-     0.008
Eccentricity:         0.10530953 +/-    0.1106
Semi-Major Axis:     46.39949625 +/-    0.9395
Time of Perihelion: 2468893.2616 +/-   22082.0
Perihelion:          41.51318727 +/-    5.1989
Aphelion:            51.28580523 +/-    5.2345
Period (y)              316.0662 +/-      9.60
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.24831872 +/-    0.0025
Ecliptic Y          -40.42283281 +/-    0.0078
Ecliptic Z            0.72468002 +/-    0.0001
Ecliptic XDOT         0.00259264 +/-    0.0002
Ecliptic YDOT         0.00094364 +/-    0.0005
Ecliptic ZDOT        -0.00014124 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.24395679 +/-    0.0075
Geocenter to KBO     41.42012699 +/-    0.0082
# Hcoef:  8.69

The following table shows the complete astrometric record for 22LK15. 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 (22LK15) followed by the observatory code and reference code for the source of the astrometry.

2022 06  02.44372  19 16 00.846  -21 16 44.19  24.7r 22LK15    266  C~6Ipa      
2022 06  02.53086  19 16 00.504  -21 16 44.79  24.7r 22LK15    266  C~6Ipa      
2022 06  02.61096  19 16 00.188  -21 16 45.34  24.7r 22LK15    266  C~6Ipa      
2022 06  03.44086  19 15 56.984  -21 16 51.07  24.8r 22LK15    266  C~6Ipa      
2022 06  03.52767  19 15 56.638  -21 16 51.69  24.8r 22LK15    266  C~6Ipa      
2022 06  03.61505  19 15 56.288  -21 16 52.29  24.8r 22LK15    266  C~6Ipa      
2022 06  29.45230  19 13 59.668  -21 20 25.72  25.1r 22LK15    266  C~6Ipa      
2022 06  29.51532  19 13 59.352  -21 20 26.29  25.1r 22LK15    266  C~6Ipa      
2022 06  29.57836  19 13 59.035  -21 20 26.86  25.1r 22LK15    266  C~6Ipa      
2023 09  09.22891  19 15 01.767  -21 24 18.90        22LK15    266  C~8ecH      
2023 09  09.32430  19 15 01.561  -21 24 19.43        22LK15    266  C~8ecH      
2023 09  09.41985  19 15 01.357  -21 24 19.94        22LK15    266  C~8ecH      
2023 09  10.22905  19 14 59.736  -21 24 24.41        22LK15    266  C~8ecH      
2023 09  10.32490  19 14 59.537  -21 24 24.93        22LK15    266  C~8ecH      
2023 09  10.42059  19 14 59.341  -21 24 25.42        22LK15    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     -4.82     0.01       0.02     0.01
     3   0.0005     -9.27     0.00       0.05     0.01
     4   0.0027    -54.42    -0.01       0.17    -0.00
     5   0.0030    -59.29    -0.01       0.18    -0.01
     6   0.0032    -64.22    -0.02       0.22    -0.00
     7   0.0739  -1707.86    -0.01      -3.02    -0.01
     8   0.0741  -1712.31     0.01      -3.03    -0.00
     9   0.0743  -1716.78    -0.00      -3.04    -0.01
    10   1.2698   -877.10     0.01    -344.64    -0.00
    11   1.2700   -880.02     0.01    -344.79    -0.00
    12   1.2703   -882.91     0.00    -344.93    -0.01
    13   1.2725   -905.94     0.00    -346.47     0.00
    14   1.2728   -908.76    -0.01    -346.63     0.00
    15   1.2730   -911.54    -0.01    -346.77     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.

22LK15    quality flag:1

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        45.942    61.301    45.908
ecceobj         0.100     0.463     0.109
incobj          3.047     3.074     3.045
qmin           40.872    32.002    40.369
qmax           51.731   130.891    52.191
amean          46.185    68.899    46.145
amin           45.821    61.061    45.757
amax           46.585    81.958    46.557
emean           0.099     0.519     0.109
emin            0.085     0.454     0.095
emax            0.111     0.597     0.121
imean           1.901     3.996     1.925
imin            1.433     1.587     1.423
imax            2.328     6.060     2.414
excite_mean     0.104     0.524     0.114
fracstop        1.000     1.000     1.000
cjmean          3.115     3.010     3.112

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       175.3     182.3     178.0
kozaiamp        180.0     180.0     179.9