Orbit Fit and Astrometric record for 22LG16

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: 22LG16    
# Created Tue Apr  1 01:11:29 2025
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     12
# Arc:  28.17d
# First observation: 2022/06/02
#  Last observation: 2022/06/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.028205   0.000000  -0.012903   0.026317   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     0.16 DOF:     19 RMS:  0.02
# Min/Max residuals:    -0.03    0.02
# Exact a, adot, b, bdot, g, gdot:
  1.487551E-05  2.396771E-02 -8.004753E-06 -1.282602E-02  2.546755E-02 -2.029653E-03
# Covariance matrix:
  2.9726E-12  5.3167E-09 -7.6036E-15 -4.4274E-11  9.8079E-10  2.8379E-08
  5.3167E-09  1.0610E-05 -2.2179E-11 -8.0112E-08  1.9424E-06  4.8204E-05
 -7.6036E-15 -2.2179E-11  2.5143E-13 -3.4945E-12 -3.6145E-12  1.7414E-10
 -4.4274E-11 -8.0112E-08 -3.4945E-12  1.0067E-09 -1.5187E-08 -6.8472E-07
  9.8079E-10  1.9424E-06 -3.6145E-12 -1.5187E-08  3.5647E-07  9.3584E-06
  2.8379E-08  4.8204E-05  1.7414E-10 -6.8472E-07  9.3584E-06  5.4793E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.491424  -72.914203    0.596859    0.006774   -0.821150  2459732.944521
# Heliocentric elements and errors
Epoch:              2459730.5000  =  2022/05/31
Mean Anomaly:          337.13230 +/-   173.242
Argument of Peri:      212.51278 +/-   272.484
Long of Asc Node:      107.14413 +/-     0.109
Inclination:            28.14443 +/-     3.421
Eccentricity:         0.18919504 +/-    0.4555
Semi-Major Axis:     48.14235456 +/-    7.6738
Time of Perihelion: 2467480.6376 +/-   58684.5
Perihelion:          39.03405987 +/-   22.7924
Aphelion:            57.25064924 +/-   23.7499
Period (y)              334.0406 +/-     79.87
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           11.21624181 +/-    0.2704
Ecliptic Y          -38.49347319 +/-    0.8799
Ecliptic Z            0.33653836 +/-    0.0079
Ecliptic XDOT         0.00240401 +/-    0.0009
Ecliptic YDOT         0.00096327 +/-    0.0024
Ecliptic ZDOT        -0.00138077 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.09569574 +/-    0.8481
Geocenter to KBO     39.26566086 +/-    0.9205
# Hcoef:  9.59

The following table shows the complete astrometric record for 22LG16. 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 (22LG16) followed by the observatory code and reference code for the source of the astrometry.

2022 06  02.44372  19 13 49.113  -21 51 35.68  25.7r 22LG16    266  C~6Ipb      
2022 06  02.53086  19 13 48.747  -21 51 36.92  25.7r 22LG16    266  C~6Ipb      
2022 06  02.61096  19 13 48.410  -21 51 38.05  25.7r 22LG16    266  C~6Ipb      
2022 06  03.44086  19 13 44.981  -21 51 49.83  25.6r 22LG16    266  C~6Ipb      
2022 06  03.52767  19 13 44.611  -21 51 51.08  25.6r 22LG16    266  C~6Ipb      
2022 06  03.61505  19 13 44.238  -21 51 52.31  25.6r 22LG16    266  C~6Ipb      
2022 06  29.45230  19 11 39.847  -21 58 30.87  25.5r 22LG16    266  C~6Ipb      
2022 06  29.52093  19 11 39.480  -21 58 31.98  25.5r 22LG16    266  C~6Ipb      
2022 06  29.58817  19 11 39.121  -21 58 33.05  25.5r 22LG16    266  C~6Ipb      
2022 06  30.45132  19 11 34.585  -21 58 47.07  25.3r 22LG16    266  C~6Ipb      
2022 06  30.53015  19 11 34.161  -21 58 48.35  25.3r 22LG16    266  C~6Ipb      
2022 06  30.61334  19 11 33.716  -21 58 49.67  25.3r 22LG16    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     0.00       0.00     0.01
     2   0.0002     -5.21     0.01      -0.59     0.01
     3   0.0005    -10.01     0.01      -1.12     0.00
     4   0.0027    -58.85    -0.01      -6.80    -0.01
     5   0.0030    -64.11    -0.01      -7.39    -0.01
     6   0.0032    -69.42     0.00      -7.96    -0.01
     7   0.0739  -1836.53     0.02    -188.59    -0.02
     8   0.0741  -1841.73     0.02    -189.07    -0.02
     9   0.0743  -1846.82     0.02    -189.52    -0.02
    10   0.0767  -1911.16    -0.01    -195.72     0.02
    11   0.0769  -1917.17    -0.02    -196.27     0.01
    12   0.0771  -1923.47    -0.03    -196.82     0.02

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.

22LG16    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