Orbit Fit and Astrometric record for 19QQ111

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: 19QQ111   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   1.15y
# First observation: 2019/08/30
#  Last observation: 2020/10/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.022178   0.000000  -0.000370   0.023336   0.000000
# Chi-squared of fit:     8.72 DOF:     10 RMS:  0.18
# Min/Max residuals:    -0.30    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.451624E-05  2.218491E-02 -5.586358E-08 -3.696048E-04  2.333193E-02 -1.268356E-03
# Covariance matrix:
  7.4103E-13  1.4142E-12  1.7662E-15 -4.0848E-14  1.9274E-12  1.1433E-10
  1.4142E-12  2.8961E-10  3.0896E-13 -9.1196E-12  1.1218E-10  3.8148E-08
  1.7662E-15  3.0896E-13  3.9378E-13 -3.6481E-13  1.1946E-13  4.0826E-11
 -4.0848E-14 -9.1196E-12 -3.6481E-13  8.9027E-13 -3.4845E-12 -1.2091E-09
  1.9274E-12  1.1218E-10  1.1946E-13 -3.4845E-12  4.8111E-11  1.4368E-08
  1.1433E-10  3.8148E-08  4.0826E-11 -1.2091E-09  1.4368E-08  5.0776E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.176990   -7.848771    0.268809   -0.053624   -0.966218  2458725.713221
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          281.32388 +/-     1.652
Argument of Peri:      338.33227 +/-     9.440
Long of Asc Node:       99.05254 +/-     0.126
Inclination:             3.25277 +/-     0.002
Eccentricity:         0.06072534 +/-    0.1015
Semi-Major Axis:     44.19927445 +/-    0.4709
Time of Perihelion: 2482176.9122 +/-     319.5
Perihelion:          41.51525837 +/-    4.5080
Aphelion:            46.88329052 +/-    4.5139
Period (y)              293.8535 +/-      4.70
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.31772981 +/-    0.0126
Ecliptic Y           -6.24930369 +/-    0.0017
Ecliptic Z           -2.37531168 +/-    0.0007
Ecliptic XDOT         0.00021437 +/-    0.0003
Ecliptic YDOT         0.00260007 +/-    0.0000
Ecliptic ZDOT        -0.00003528 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.83060139 +/-    0.0125
Geocenter to KBO     42.85972602 +/-    0.0127
# Hcoef:  9.59

The following table shows the complete astrometric record for 19QQ111. 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 (19QQ111) followed by the observatory code and reference code for the source of the astrometry.

2019 08  30.212420 23 36 12.471  -06 01 55.19  25.9r 19QQ111   W84  C~7XLj      
2019 08  30.387214 23 36 11.740  -06 02 00.27  25.9r 19QQ111   W84  C~7XLj      
2019 09  28.012277 23 34 10.445  -06 15 08.10  25.7r 19QQ111   W84  C~7XLj      
2019 09  28.177548 23 34 09.784  -06 15 12.40  25.7r 19QQ111   W84  C~7XLj      
2020 10  20.004233 23 37 26.063  -05 54 51.05  26.1r 19QQ111   W84  C~7XLj      
2020 10  20.172968 23 37 25.440  -05 54 54.26  26.1r 19QQ111   W84  C~7XLj      
2020 10  22.003924 23 37 19.206  -05 55 29.42  26.0r 19QQ111   W84  C~7XLj      
2020 10  22.173214 23 37 18.658  -05 55 32.81  26.0r 19QQ111   W84  C~7XLj      

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     0.11       0.00    -0.04
     2   0.0005    -12.02    -0.11      -0.34    -0.22
     3   0.0788  -1985.16    -0.30      -7.83     0.26
     4   0.0793  -1995.91     0.30      -7.88     0.01
     5   1.1411   1176.08     0.16     -45.94    -0.11
     6   1.1416   1166.28    -0.17     -45.20     0.14
     7   1.1466   1066.95    -0.18     -40.57     0.17
     8   1.1471   1058.10     0.18     -40.44    -0.21

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.

19QQ111    quality flag:2

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        44.292    48.475    44.221
ecceobj         0.065     0.329     0.039
incobj          3.257     3.249     3.257
qmin           40.093    31.087    41.242
qmax           48.438   123.641    47.110
amean          44.156    64.997    44.090
amin           43.797    46.651    43.743
amax           44.524    77.787    44.443
emean           0.072     0.496     0.045
emin            0.055     0.305     0.029
emax            0.088     0.589     0.061
imean           1.745     4.549     1.673
imin            0.944     0.416     0.971
imax            2.428     7.506     2.303
excite_mean     0.079     0.503     0.054
fracstop        1.000     1.000     1.000
cjmean          3.096     2.985     3.099

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       169.7     177.8     172.3
kozaiamp        179.9     180.0     179.9