Orbit Fit and Astrometric record for 19QT110

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: 19QT110   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:   2.10y
# First observation: 2019/08/30
#  Last observation: 2021/10/04
Preliminary a, adot, b, bdot, g, gdot:
   0.000028   0.025818  -0.000004   0.003088   0.025267   0.000000
# Chi-squared of fit:     1.32 DOF:     14 RMS:  0.06
# Min/Max residuals:    -0.15    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.573109E-05  2.571646E-02  1.811581E-06  3.075738E-03  2.510320E-02 -1.591992E-03
# Covariance matrix:
  6.4129E-13  5.6991E-13 -1.2652E-14  9.6697E-14  1.3080E-12  1.5061E-11
  5.6991E-13  4.8988E-12 -8.0854E-14  6.3170E-13  5.0586E-12  9.8344E-11
 -1.2652E-14 -8.0854E-14  3.5231E-13 -2.0209E-13 -8.5520E-14 -1.6865E-12
  9.6697E-14  6.3170E-13 -2.0209E-13  2.6358E-13  6.6183E-13  1.3187E-11
  1.3080E-12  5.0586E-12 -8.5520E-14  6.6183E-13  6.8669E-12  1.0305E-10
  1.5061E-11  9.8344E-11 -1.6865E-12  1.3187E-11  1.0305E-10  2.0529E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.628782   -7.840718    0.268945   -0.027498   -0.967277  2458725.713221
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          332.18145 +/-     0.524
Argument of Peri:       22.25650 +/-     0.710
Long of Asc Node:        4.85066 +/-     0.002
Inclination:             6.99294 +/-     0.001
Eccentricity:         0.12369118 +/-    0.0012
Semi-Major Axis:     45.61835437 +/-    0.0238
Time of Perihelion: 2467416.9079 +/-     163.6
Perihelion:          39.97576627 +/-    0.0586
Aphelion:            51.26094247 +/-    0.0610
Period (y)              308.1184 +/-      0.24
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.37196640 +/-    0.0041
Ecliptic Y           -5.83757530 +/-    0.0006
Ecliptic Z           -1.13220588 +/-    0.0001
Ecliptic XDOT         0.00022859 +/-    0.0000
Ecliptic YDOT         0.00280147 +/-    0.0000
Ecliptic ZDOT         0.00034003 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.80753419 +/-    0.0041
Geocenter to KBO     39.83555580 +/-    0.0042
# Hcoef:  8.86

The following table shows the complete astrometric record for 19QT110. 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 (19QT110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  30.212420 23 33 46.556  -04 36 25.26  24.9r 19QT110   W84  C~7XLi      
2019 08  30.387214 23 33 45.767  -04 36 29.94  24.9r 19QT110   W84  C~7XLi      
2019 09  28.012277 23 31 35.881  -04 49 32.12  24.8r 19QT110   W84  C~7XLi      
2019 09  28.177548 23 31 35.118  -04 49 36.33  24.8r 19QT110   W84  C~7XLi      
2020 10  18.012125 23 35 18.636  -04 13 07.53  24.9r 19QT110   W84  C~7XLi      
2020 10  18.176134 23 35 17.999  -04 13 11.01  24.9r 19QT110   W84  C~7XLi      
2021 09  06.108763 23 43 34.373  -03 09 45.94  24.8r 19QT110   W84  C~7XLi      
2021 09  06.196686 23 43 33.965  -03 09 48.33  24.8r 19QT110   W84  C~7XLi      
2021 10  04.002582 23 41 27.572  -03 22 29.57  24.9r 19QT110   W84  C~7XLi      
2021 10  04.175328 23 41 26.798  -03 22 34.03  24.9r 19QT110   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     0.10       0.00     0.03
     2   0.0005    -12.69    -0.06       0.36     0.12
     3   0.0788  -2105.52     0.04      48.71    -0.15
     4   0.0793  -2117.66    -0.07      49.34     0.04
     5   1.1357   1817.74     0.03     739.00    -0.06
     6   1.1361   1807.61    -0.04     739.57    -0.04
     7   2.0203  10145.91     0.03    1283.55     0.02
     8   2.0205  10139.33    -0.07    1283.79     0.09
     9   2.0966   8095.87     0.04    1337.96    -0.04
    10   2.0971   8083.45     0.01    1338.47    -0.01

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.

19QT110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.716    45.761    45.672
ecceobj         0.128     0.130     0.126
incobj          6.982     6.983     6.982
qmin           39.077    39.020    39.118
qmax           52.394    52.473    52.242
amean          45.559    45.602    45.518
amin           45.173    45.224    45.134
amax           45.974    46.021    45.935
emean           0.125     0.127     0.124
emin            0.112     0.114     0.110
emax            0.140     0.141     0.138
imean           7.018     7.019     7.011
imin            6.402     6.394     6.434
imax            7.565     7.569     7.565
excite_mean     0.175     0.177     0.174
fracstop        1.000     1.000     1.000
cjmean          3.083     3.083     3.083

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       174.3     174.3     173.9
kozaiamp        180.0     179.9     180.0