Orbit Fit and Astrometric record for 19QH111

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: 19QH111   
# Created Tue Apr  1 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   2.10y
# First observation: 2019/08/30
#  Last observation: 2021/10/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000004   0.019665   0.000000   0.000778   0.021931   0.000000
# Chi-squared of fit:    10.62 DOF:     10 RMS:  0.20
# Min/Max residuals:    -0.34    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.453162E-05  1.970583E-02  7.938506E-07  7.810166E-04  2.196070E-02  1.220849E-03
# Covariance matrix:
  7.3943E-13  6.0103E-13 -3.8514E-15  2.5324E-14  1.6396E-12  1.6829E-11
  6.0103E-13  4.4243E-12 -2.3879E-14  1.8524E-13  5.0181E-12  1.1807E-10
 -3.8514E-15 -2.3879E-14  3.5404E-13 -2.0643E-13 -2.6479E-14 -6.9490E-13
  2.5324E-14  1.8524E-13 -2.0643E-13  2.5716E-13  1.9212E-13  5.5090E-12
  1.6396E-12  5.0181E-12 -2.6479E-14  1.9212E-13  7.9871E-12  1.2447E-10
  1.6829E-11  1.1807E-10 -6.9490E-13  5.5090E-12  1.2447E-10  3.4936E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.293883   -7.421634    0.276016   -0.038645   -0.964901  2458725.713221
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:          123.69204 +/-     1.420
Argument of Peri:      184.66466 +/-     1.404
Long of Asc Node:       37.11882 +/-     0.018
Inclination:             3.18086 +/-     0.001
Eccentricity:         0.07399089 +/-    0.0022
Semi-Major Axis:     44.51882690 +/-    0.0150
Time of Perihelion: 2421442.4461 +/-     427.4
Perihelion:          41.22483930 +/-    0.0987
Aphelion:            47.81281450 +/-    0.0991
Period (y)              297.0460 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.04299860 +/-    0.0058
Ecliptic Y           -6.28254306 +/-    0.0008
Ecliptic Z           -1.82254428 +/-    0.0002
Ecliptic XDOT         0.00048047 +/-    0.0000
Ecliptic YDOT         0.00241659 +/-    0.0000
Ecliptic ZDOT         0.00009097 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.50537318 +/-    0.0057
Geocenter to KBO     45.53588926 +/-    0.0059
# Hcoef:  9.42

The following table shows the complete astrometric record for 19QH111. 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 (19QH111) followed by the observatory code and reference code for the source of the astrometry.

2019 08  30.212420 23 36 22.585  -05 03 07.66  25.9r 19QH111   W84  C~7XLi      
2019 08  30.387214 23 36 21.900  -05 03 11.89  25.9r 19QH111   W84  C~7XLi      
2019 09  28.012277 23 34 26.334  -05 15 24.08  26.0r 19QH111   W84  C~7XLi      
2019 09  28.177548 23 34 25.652  -05 15 28.60  26.0r 19QH111   W84  C~7XLi      
2020 10  18.012125 23 37 14.324  -04 53 50.72  26.0r 19QH111   W84  C~7XLi      
2020 10  18.176134 23 37 13.724  -04 53 53.43  26.0r 19QH111   W84  C~7XLi      
2021 10  06.002765 23 42 03.950  -04 20 06.63  26.1r 19QH111   W84  C~7XLi      
2021 10  06.167954 23 42 03.265  -04 20 10.88  26.1r 19QH111   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    -0.07       0.00    -0.05
     2   0.0005    -11.07     0.06       0.17     0.12
     3   0.0788  -1886.42     0.17      10.77     0.11
     4   0.0793  -1897.56    -0.16      10.65    -0.26
     5   1.1357    930.54     0.13     205.10    -0.25
     6   1.1361    921.23    -0.13     206.17     0.41
     7   2.1021   5709.98     0.34     343.38     0.02
     8   2.1025   5698.89    -0.34     343.56    -0.11

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.

19QH111    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.563    44.612    44.516
ecceobj         0.069     0.073     0.067
incobj          3.177     3.177     3.177
qmin           40.581    40.480    40.576
qmax           48.623    48.799    48.475
amean          44.453    44.505    44.406
amin           44.100    44.147    44.057
amax           44.836    44.878    44.781
emean           0.069     0.072     0.068
emin            0.054     0.056     0.052
emax            0.084     0.087     0.083
imean           2.634     2.627     2.632
imin            1.941     1.950     1.929
imax            3.187     3.167     3.194
excite_mean     0.083     0.086     0.082
fracstop        1.000     1.000     1.000
cjmean          3.098     3.099     3.098

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       179.7     181.2     179.2
kozaiamp        180.0     180.0     179.9