Orbit Fit and Astrometric record for 19QE110

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: 19QE110   
# Created Tue Apr  1 01:11:14 2025
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   2.10y
# First observation: 2019/08/28
#  Last observation: 2021/10/03
Preliminary a, adot, b, bdot, g, gdot:
   0.000012   0.022957   0.000000   0.000771   0.023846   0.000000
# Chi-squared of fit:     1.52 DOF:     10 RMS:  0.08
# Min/Max residuals:    -0.16    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.493003E-05  2.294013E-02  6.762245E-07  7.709765E-04  2.379558E-02  1.445603E-04
# Covariance matrix:
  7.4070E-13  1.5353E-12 -2.7287E-15  6.7132E-14  1.7012E-12  4.1372E-11
  1.5353E-12  1.7914E-11 -2.9010E-14  7.0971E-13  9.9884E-12  4.3774E-10
 -2.7287E-15 -2.9010E-14  3.8293E-13 -1.9049E-13 -1.5984E-14 -7.1666E-13
  6.7132E-14  7.0971E-13 -1.9049E-13  2.0816E-13  3.9248E-13  1.7530E-11
  1.7012E-12  9.9884E-12 -1.5984E-14  3.9248E-13  8.4274E-12  2.4194E-10
  4.1372E-11  4.3774E-10 -7.1666E-13  1.7530E-11  2.4194E-10  1.0813E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.413122   -8.366142    0.292908   -0.006925   -0.960944  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:            9.39787 +/-    16.777
Argument of Peri:      338.40926 +/-    17.296
Long of Asc Node:        3.12528 +/-     0.006
Inclination:             1.95907 +/-     0.001
Eccentricity:         0.01491657 +/-    0.0009
Semi-Major Axis:     43.63222949 +/-    0.0129
Time of Perihelion: 2455972.3740 +/-    4905.8
Perihelion:          42.98138608 +/-    0.0428
Aphelion:            44.28307291 +/-    0.0429
Period (y)              288.2168 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.48727368 +/-    0.0051
Ecliptic Y           -6.55094602 +/-    0.0008
Ecliptic Z           -0.30297816 +/-    0.0000
Ecliptic XDOT         0.00040958 +/-    0.0000
Ecliptic YDOT         0.00260939 +/-    0.0000
Ecliptic ZDOT         0.00008836 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.99040724 +/-    0.0050
Geocenter to KBO     42.02460689 +/-    0.0051
# Hcoef:  8.18

The following table shows the complete astrometric record for 19QE110. 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 (19QE110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 29 54.911  -03 41 51.20  24.5r 19QE110   W84  C~7XLh      
2019 08  28.388381 23 29 54.154  -03 41 55.79  24.5r 19QE110   W84  C~7XLh      
2019 09  29.013696 23 27 38.019  -03 56 14.87  24.3r 19QE110   W84  C~7XLh      
2019 09  29.177510 23 27 37.322  -03 56 19.12  24.3r 19QE110   W84  C~7XLh      
2021 09  06.108763 23 38 48.780  -02 38 40.31  24.3r 19QE110   W84  C~7XLh      
2021 09  06.196686 23 38 48.374  -02 38 42.66  24.3r 19QE110   W84  C~7XLh      
2021 10  03.011907 23 36 52.742  -02 50 55.96  24.5r 19QE110   W84  C~7XLh      
2021 10  03.165173 23 36 52.099  -02 50 59.98  24.5r 19QE110   W84  C~7XLh      

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     0.06       0.00    -0.03
     2   0.0005    -12.22    -0.06       0.25     0.09
     3   0.0871  -2223.47    -0.05      13.58    -0.05
     4   0.0875  -2234.73     0.04      13.78    -0.01
     5   2.0257   8848.43     0.16     320.62    -0.10
     6   2.0260   8841.90    -0.16     320.87     0.08
     7   2.0994   6957.89    -0.04     333.84     0.03
     8   2.0998   6947.44     0.04     333.96    -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.

19QE110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.685    43.746    43.631
ecceobj         0.017     0.021     0.018
incobj          1.961     1.961     1.961
qmin           41.979    42.051    41.783
qmax           45.295    45.358    45.419
amean          43.569    43.631    43.514
amin           43.236    43.298    43.184
amax           43.905    43.966    43.853
emean           0.016     0.016     0.021
emin            0.000     0.000     0.002
emax            0.032     0.032     0.036
imean           2.487     2.509     2.466
imin            1.712     1.751     1.673
imax            3.163     3.158     3.168
excite_mean     0.047     0.047     0.048
fracstop        1.000     1.000     1.000
cjmean          3.094     3.094     3.093

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       180.0     188.0     183.8
kozaiamp        179.9     180.0     180.0