Orbit Fit and Astrometric record for 19QM110

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: 19QM110   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:   2.10y
# First observation: 2019/08/28
#  Last observation: 2021/10/04
Preliminary a, adot, b, bdot, g, gdot:
   0.000030   0.027936  -0.000005   0.004453   0.026717   0.000000
# Chi-squared of fit:     4.29 DOF:     14 RMS:  0.12
# Min/Max residuals:    -0.40    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.645525E-05  2.783545E-02  3.001028E-06  4.437806E-03  2.655575E-02 -1.205334E-03
# Covariance matrix:
  6.4931E-13  5.0658E-13 -1.5557E-14  1.1848E-13  1.2117E-12  1.2734E-11
  5.0658E-13  4.4037E-12 -9.9078E-14  7.6171E-13  4.3306E-12  8.1869E-11
 -1.5557E-14 -9.9078E-14  3.5482E-13 -2.0974E-13 -9.9306E-14 -1.9235E-12
  1.1848E-13  7.6171E-13 -2.0974E-13  3.1627E-13  7.6040E-13  1.4792E-11
  1.2117E-12  4.3306E-12 -9.9306E-14  7.6040E-13  5.7941E-12  8.1728E-11
  1.2734E-11  8.1869E-11 -1.9235E-12  1.4792E-11  8.1728E-11  1.5899E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.225865   -7.891017    0.300867   -0.020502   -0.958288  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          338.46927 +/-     0.522
Argument of Peri:       19.54875 +/-     0.678
Long of Asc Node:      359.11558 +/-     0.001
Inclination:             9.12495 +/-     0.001
Eccentricity:         0.11537170 +/-    0.0008
Semi-Major Axis:     43.16064331 +/-    0.0165
Time of Perihelion: 2464914.7185 +/-     150.3
Perihelion:          38.18112660 +/-    0.0369
Aphelion:            48.14016002 +/-    0.0385
Period (y)              283.5568 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.20246429 +/-    0.0034
Ecliptic Y           -5.60526514 +/-    0.0005
Ecliptic Z           -0.80550112 +/-    0.0001
Ecliptic XDOT         0.00028908 +/-    0.0000
Ecliptic YDOT         0.00285889 +/-    0.0000
Ecliptic ZDOT         0.00045986 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.61989264 +/-    0.0033
Geocenter to KBO     37.65662282 +/-    0.0034
# Hcoef:  9.56

The following table shows the complete astrometric record for 19QM110. 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 (19QM110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 32 57.105  -04 15 24.39  25.3r 19QM110   W84  C~7XLi      
2019 08  28.388381 23 32 56.276  -04 15 29.18  25.3r 19QM110   W84  C~7XLi      
2019 09  29.013696 23 30 25.060  -04 30 15.97  25.3r 19QM110   W84  C~7XLi      
2019 09  29.177510 23 30 24.295  -04 30 20.36  25.3r 19QM110   W84  C~7XLi      
2020 10  18.012125 23 34 27.194  -03 46 33.06  25.4r 19QM110   W84  C~7XLi      
2020 10  18.176134 23 34 26.535  -03 46 36.73  25.4r 19QM110   W84  C~7XLi      
2021 09  06.108763 23 43 12.324  -02 35 25.67  25.3r 19QM110   W84  C~7XLi      
2021 09  06.196686 23 43 11.879  -02 35 27.78  25.3r 19QM110   W84  C~7XLi      
2021 10  04.002582 23 40 58.416  -02 48 32.89  25.3r 19QM110   W84  C~7XLi      
2021 10  04.175328 23 40 57.604  -02 48 37.65  25.3r 19QM110   W84  C~7XLi      

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     0.02       0.00    -0.07
     2   0.0005    -13.28    -0.03       0.50    -0.00
     3   0.0871  -2441.40    -0.12      78.41     0.06
     4   0.0875  -2453.65     0.13      78.88    -0.02
     5   1.1411   1922.70    -0.04    1057.45     0.11
     6   1.1416   1912.19     0.02    1057.99     0.01
     7   2.0257  10845.08     0.07    1857.29    -0.40
     8   2.0260  10838.10    -0.08    1858.01     0.07
     9   2.1021   8686.15     0.02    1931.68     0.18
    10   2.1026   8673.07    -0.00    1932.14     0.07

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.

19QM110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.231    43.260    43.202
ecceobj         0.119     0.120     0.118
incobj          9.112     9.112     9.112
qmin           36.901    36.792    37.036
qmax           49.752    50.009    49.441
amean          43.116    43.147    43.077
amin           42.750    42.744    42.720
amax           43.529    43.569    43.476
emean           0.117     0.121     0.115
emin            0.092     0.096     0.094
emax            0.143     0.148     0.138
imean           8.571     8.489     8.592
imin            7.282     7.195     7.343
imax           10.011    10.004     9.974
excite_mean     0.190     0.191     0.189
fracstop        1.000     1.000     1.000
cjmean          3.048     3.048     3.048

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       176.6     175.1     177.1
kozaiamp        180.0     180.0     179.9