Orbit Fit and Astrometric record for 19QH110

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: 19QH110   
# Created Tue Apr  1 01:11:14 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:
  -0.000001   0.024741  -0.000000   0.000169   0.024710   0.000000
# Chi-squared of fit:     0.74 DOF:     14 RMS:  0.05
# Min/Max residuals:    -0.11    0.11
# Exact a, adot, b, bdot, g, gdot:
  1.563745E-05  2.480680E-02  1.302964E-07  1.694901E-04  2.473354E-02  2.122865E-03
# Covariance matrix:
  6.5953E-13  5.3683E-13 -8.1127E-16  5.3153E-15  1.2639E-12  1.5173E-11
  5.3683E-13  4.4052E-12 -4.2969E-15  3.2551E-14  4.4570E-12  9.3281E-11
 -8.1127E-16 -4.2969E-15  3.5278E-13 -1.9218E-13 -4.7238E-15 -9.4506E-14
  5.3153E-15  3.2551E-14 -1.9218E-13  1.8014E-13  3.3514E-14  7.2015E-13
  1.2639E-12  4.4570E-12 -4.7238E-15  3.3514E-14  6.0548E-12  9.5879E-11
  1.5173E-11  9.3281E-11 -9.4506E-14  7.2015E-13  9.5879E-11  2.0640E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.816971   -7.323601    0.310344   -0.013620   -0.955384  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:           46.73613 +/-     0.431
Argument of Peri:      239.39329 +/-     0.633
Long of Asc Node:       56.71679 +/-     0.057
Inclination:             0.88427 +/-     0.000
Eccentricity:         0.10295888 +/-    0.0016
Semi-Major Axis:     44.23546390 +/-    0.0125
Time of Perihelion: 2444769.5258 +/-     128.5
Perihelion:          39.68103001 +/-    0.0700
Aphelion:            48.78989780 +/-    0.0704
Period (y)              294.2145 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.00795201 +/-    0.0040
Ecliptic Y           -5.58991885 +/-    0.0005
Ecliptic Z           -0.57647072 +/-    0.0001
Ecliptic XDOT         0.00059181 +/-    0.0000
Ecliptic YDOT         0.00269414 +/-    0.0000
Ecliptic ZDOT         0.00001518 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.39120244 +/-    0.0040
Geocenter to KBO     40.43092096 +/-    0.0040
# Hcoef:  8.32

The following table shows the complete astrometric record for 19QH110. 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 (19QH110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 34 23.600  -03 39 25.03  24.5r 19QH110   W84  C~7XLh      
2019 08  28.388381 23 34 22.833  -03 39 29.94  24.5r 19QH110   W84  C~7XLh      
2019 09  29.013696 23 32 02.840  -03 54 29.01  24.4r 19QH110   W84  C~7XLh      
2019 09  29.177510 23 32 02.110  -03 54 33.60  24.4r 19QH110   W84  C~7XLh      
2020 10  18.012125 23 35 55.374  -03 28 41.18  24.4r 19QH110   W84  C~7XLh      
2020 10  18.176134 23 35 54.752  -03 28 44.88  24.4r 19QH110   W84  C~7XLh      
2021 09  06.108763 23 44 07.750  -02 35 13.23  24.4r 19QH110   W84  C~7XLh      
2021 09  06.196686 23 44 07.349  -02 35 15.90  24.4r 19QH110   W84  C~7XLh      
2021 10  04.002582 23 42 04.304  -02 48 27.56  24.3r 19QH110   W84  C~7XLh      
2021 10  04.175328 23 42 03.550  -02 48 32.28  24.3r 19QH110   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     0.05       0.00    -0.00
     2   0.0005    -12.49    -0.05       0.03    -0.01
     3   0.0871  -2292.64     0.04       1.79     0.02
     4   0.0875  -2304.49    -0.04       1.89    -0.01
     5   1.1411   1516.59     0.02      47.91    -0.04
     6   1.1416   1506.57    -0.02      48.20     0.05
     7   2.0257   9566.08     0.11      67.52     0.02
     8   2.0260   9559.49    -0.11      67.46    -0.07
     9   2.1021   7549.62     0.02      73.36     0.03
    10   2.1026   7537.36    -0.02      73.51     0.02

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.

19QH110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.259    44.307    44.212
ecceobj         0.101     0.105     0.098
incobj          0.886     0.886     0.886
qmin           39.187    39.046    39.256
qmax           49.377    49.648    49.242
amean          44.143    44.195    44.099
amin           43.783    43.836    43.732
amax           44.508    44.587    44.486
emean           0.093     0.097     0.090
emin            0.076     0.080     0.073
emax            0.110     0.114     0.107
imean           1.357     1.361     1.350
imin            0.508     0.515     0.502
imax            2.019     2.033     2.008
excite_mean     0.096     0.100     0.093
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       183.6     186.2     184.2
kozaiamp        180.0     180.0     180.0