Orbit Fit and Astrometric record for 19QO110

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: 19QO110   
# 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:
   0.000012   0.020894  -0.000001   0.000732   0.022815   0.000000
# Chi-squared of fit:     0.66 DOF:     14 RMS:  0.05
# Min/Max residuals:    -0.11    0.11
# Exact a, adot, b, bdot, g, gdot:
  1.439713E-05  2.086532E-02  2.662347E-07  7.315967E-04  2.275349E-02 -2.267931E-04
# Covariance matrix:
  6.6836E-13  5.2788E-13 -3.7898E-15  2.7497E-14  1.3004E-12  1.8026E-11
  5.2788E-13  3.9845E-12 -2.0177E-14  1.5418E-13  4.2849E-12  1.0109E-10
 -3.7898E-15 -2.0177E-14  3.5265E-13 -1.9276E-13 -2.2647E-14 -5.3618E-13
  2.7497E-14  1.5418E-13 -1.9276E-13  1.8535E-13  1.6906E-13  4.1061E-12
  1.3004E-12  4.2849E-12 -2.2647E-14  1.6906E-13  6.1604E-12  1.1084E-10
  1.8026E-11  1.0109E-10 -5.3618E-13  4.1061E-12  1.1084E-10  2.6922E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.330113   -7.602452    0.305690   -0.022211   -0.956722  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          200.32991 +/-     3.015
Argument of Peri:      128.19978 +/-     3.010
Long of Asc Node:       25.07702 +/-     0.015
Inclination:             2.38391 +/-     0.001
Eccentricity:         0.04331039 +/-    0.0007
Semi-Major Axis:     43.14933394 +/-    0.0126
Time of Perihelion: 2504638.2539 +/-     866.9
Perihelion:          41.28051955 +/-    0.0336
Aphelion:            45.01814834 +/-    0.0340
Period (y)              283.4454 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.46218078 +/-    0.0047
Ecliptic Y           -6.24945777 +/-    0.0007
Ecliptic Z           -1.02017104 +/-    0.0001
Ecliptic XDOT         0.00031560 +/-    0.0000
Ecliptic YDOT         0.00249249 +/-    0.0000
Ecliptic ZDOT         0.00008842 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.91082265 +/-    0.0047
Geocenter to KBO     43.94929304 +/-    0.0048
# Hcoef:  7.40

The following table shows the complete astrometric record for 19QO110. 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 (19QO110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 34 10.797  -04 14 18.65  23.9r 19QO110   W84  C~7XLi      
2019 08  28.388381 23 34 10.082  -04 14 23.29  23.9r 19QO110   W84  C~7XLi      
2019 09  29.013696 23 31 58.758  -04 28 15.43  23.9r 19QO110   W84  C~7XLi      
2019 09  29.177510 23 31 58.077  -04 28 19.56  23.9r 19QO110   W84  C~7XLi      
2020 10  18.012125 23 35 03.779  -04 05 16.16  23.8r 19QO110   W84  C~7XLi      
2020 10  18.176134 23 35 03.197  -04 05 19.59  23.8r 19QO110   W84  C~7XLi      
2021 09  06.108763 23 42 14.499  -03 16 43.30  23.6r 19QO110   W84  C~7XLi      
2021 09  06.196686 23 42 14.114  -03 16 45.59  23.6r 19QO110   W84  C~7XLi      
2021 10  04.002582 23 40 18.312  -03 28 58.51  23.9r 19QO110   W84  C~7XLi      
2021 10  04.175328 23 40 17.607  -03 29 02.79  23.9r 19QO110   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     0.05
     2   0.0005    -11.66    -0.02      -0.03    -0.03
     3   0.0871  -2144.88    -0.01      11.41    -0.02
     4   0.0875  -2155.87     0.01      11.63     0.00
     5   1.1411    942.57     0.01     184.78     0.01
     6   1.1416    933.21    -0.01     185.08     0.00
     7   2.0257   8020.50     0.11     301.98    -0.07
     8   2.0260   8014.29    -0.11     302.17     0.08
     9   2.1021   6129.60    -0.01     318.36    -0.02
    10   2.1026   6118.20     0.01     318.62     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.

19QO110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.218    43.248    43.188
ecceobj         0.043     0.044     0.042
incobj          2.382     2.382     2.383
qmin           39.858    39.814    39.896
qmax           46.539    46.666    46.437
amean          43.103    43.130    43.074
amin           42.770    42.794    42.739
amax           43.465    43.482    43.424
emean           0.052     0.053     0.050
emin            0.032     0.033     0.030
emax            0.072     0.074     0.070
imean           2.143     2.127     2.145
imin            1.082     1.093     1.072
imax            3.005     2.974     3.008
excite_mean     0.065     0.066     0.064
fracstop        1.000     1.000     1.000
cjmean          3.086     3.086     3.086

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       154.1     152.2     157.3
kozaiamp        180.0     180.0     179.9