Orbit Fit and Astrometric record for 19QS110

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: 19QS110   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     12
# Arc:   2.11y
# First observation: 2019/08/30
#  Last observation: 2021/10/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000020   0.023031   0.000000  -0.000266   0.023795   0.000000
# Chi-squared of fit:     1.47 DOF:     18 RMS:  0.06
# Min/Max residuals:    -0.16    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.527376E-05  2.299687E-02 -2.923486E-07 -2.648375E-04  2.370136E-02 -4.829339E-04
# Covariance matrix:
  6.2197E-13  4.7878E-13  5.9979E-16 -8.3367E-15  1.2442E-12  1.4756E-11
  4.7878E-13  3.9075E-12  6.4754E-15 -4.8320E-14  4.5722E-12  8.7143E-11
  5.9979E-16  6.4754E-15  3.3031E-13 -1.9282E-13  6.5445E-15  1.5445E-13
 -8.3367E-15 -4.8320E-14 -1.9282E-13  1.7937E-13 -5.8350E-14 -1.1313E-12
  1.2442E-12  4.5722E-12  6.5445E-15 -5.8350E-14  6.6432E-12  1.0454E-10
  1.4756E-11  8.7143E-11  1.5445E-13 -1.1313E-12  1.0454E-10  2.0417E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.639522   -8.508129    0.257655   -0.027767   -0.970337  2458725.713221
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          323.91462 +/-     1.995
Argument of Peri:      286.20488 +/-     2.208
Long of Asc Node:      103.78362 +/-     0.032
Inclination:             1.73625 +/-     0.000
Eccentricity:         0.03943852 +/-    0.0014
Semi-Major Axis:     44.56204511 +/-    0.0160
Time of Perihelion: 2469611.6787 +/-     602.2
Perihelion:          42.80458404 +/-    0.0623
Aphelion:            46.31950618 +/-    0.0627
Period (y)              297.4787 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.63504595 +/-    0.0045
Ecliptic Y           -6.64509337 +/-    0.0007
Ecliptic Z           -1.20716571 +/-    0.0001
Ecliptic XDOT         0.00034547 +/-    0.0000
Ecliptic YDOT         0.00263620 +/-    0.0000
Ecliptic ZDOT        -0.00002921 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.16667300 +/-    0.0045
Geocenter to KBO     42.19167309 +/-    0.0046
# Hcoef:  8.09

The following table shows the complete astrometric record for 19QS110. 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 (19QS110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  30.212420 23 31 19.985  -04 52 49.66  24.5r 19QS110   W84  C~7XLi      
2019 08  30.387214 23 31 19.249  -04 52 54.50  24.5r 19QS110   W84  C~7XLi      
2019 09  28.012277 23 29 16.592  -05 06 06.15  24.3r 19QS110   W84  C~7XLi      
2019 09  28.177548 23 29 15.889  -05 06 10.72  24.3r 19QS110   W84  C~7XLi      
2020 10  16.001792 23 32 55.695  -04 43 22.73  24.3r 19QS110   W84  C~7XLi      
2020 10  16.175804 23 32 55.048  -04 43 26.49  24.3r 19QS110   W84  C~7XLi      
2020 10  18.012125 23 32 48.497  -04 44 06.45  24.5r 19QS110   W84  C~7XLi      
2020 10  18.176134 23 32 47.906  -04 44 09.88  24.5r 19QS110   W84  C~7XLi      
2021 09  05.096099 23 40 40.600  -03 54 34.10  24.2r 19QS110   W84  C~7XLi      
2021 09  05.195929 23 40 40.156  -03 54 37.10  24.2r 19QS110   W84  C~7XLi      
2021 10  07.004805 23 38 24.647  -04 09 09.32  24.3r 19QS110   W84  C~7XLi      
2021 10  07.169933 23 38 23.961  -04 09 13.47  24.3r 19QS110   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     0.01       0.00     0.02
     2   0.0005    -12.02    -0.01      -0.10    -0.03
     3   0.0788  -2008.61     0.00      -4.54     0.10
     4   0.0793  -2020.06    -0.01      -4.60    -0.09
     5   1.1302   1538.24    -0.02     -44.43    -0.05
     6   1.1306   1527.87    -0.04     -44.06     0.05
     7   1.1357   1422.11     0.01     -42.05    -0.05
     8   1.1361   1412.64     0.04     -41.71     0.03
     9   2.0175   9089.05     0.15    -113.65     0.04
    10   2.0178   9081.75    -0.16    -113.76    -0.06
    11   2.1048   6871.18     0.06    -108.39    -0.02
    12   2.1053   6860.10    -0.05    -108.12     0.05

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.

19QS110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.631    44.665    44.598
ecceobj         0.044     0.046     0.042
incobj          1.737     1.737     1.737
qmin           41.680    41.583    41.761
qmax           47.515    47.679    47.414
amean          44.500    44.534    44.468
amin           44.148    44.188    44.116
amax           44.869    44.899    44.830
emean           0.045     0.048     0.043
emin            0.030     0.032     0.028
emax            0.060     0.062     0.058
imean           0.606     0.601     0.610
imin            0.044     0.059     0.040
imax            1.012     1.000     1.018
excite_mean     0.047     0.049     0.044
fracstop        1.000     1.000     1.000
cjmean          3.105     3.105     3.105

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       178.7     183.4     178.3
kozaiamp        180.0     179.9     180.0