Orbit Fit and Astrometric record for 19QA110

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: 19QA110   
# Created Tue Apr  1 01:11:14 2025
# Orbit generated from Bernstein formalism
# Fitting     10 observations of     10
# Arc:   2.02y
# First observation: 2019/08/28
#  Last observation: 2021/09/05
Preliminary a, adot, b, bdot, g, gdot:
  -0.000005   0.021887   0.000000  -0.000719   0.023062   0.000000
# Chi-squared of fit:     1.11 DOF:     14 RMS:  0.06
# Min/Max residuals:    -0.09    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.459439E-05  2.194931E-02 -2.930863E-07 -7.210765E-04  2.310580E-02  2.233726E-03
# Covariance matrix:
  3.8262E-13  3.6655E-13  1.2778E-15 -1.6670E-14  8.6610E-13  1.2107E-11
  3.6655E-13  4.3682E-12  1.1501E-14 -1.4333E-13  4.5031E-12  1.0433E-10
  1.2778E-15  1.1501E-14  2.4100E-13 -1.4531E-13  1.1938E-14  2.9094E-13
 -1.6670E-14 -1.4333E-13 -1.4531E-13  2.2930E-13 -1.5172E-13 -3.6186E-12
  8.6610E-13  4.5031E-12  1.1938E-14 -1.5172E-13  6.1197E-12  1.1033E-10
  1.2107E-11  1.0433E-10  2.9094E-13 -3.6186E-12  1.1033E-10  2.6342E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.870676   -8.671551    0.287782   -0.014622   -0.962406  2458723.711696
# Heliocentric elements and errors
Epoch:              2458720.5000  =  2019/08/25
Mean Anomaly:           69.98217 +/-     0.076
Argument of Peri:      123.01829 +/-     0.254
Long of Asc Node:      146.68596 +/-     0.014
Inclination:             2.07190 +/-     0.001
Eccentricity:         0.10076816 +/-    0.0023
Semi-Major Axis:     45.38497318 +/-    0.0174
Time of Perihelion: 2437010.9193 +/-      20.2
Perihelion:          40.81161298 +/-    0.1063
Aphelion:            49.95833338 +/-    0.1068
Period (y)              305.7569 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.69046295 +/-    0.0046
Ecliptic Y           -6.96103534 +/-    0.0007
Ecliptic Z           -0.65766249 +/-    0.0001
Ecliptic XDOT         0.00066092 +/-    0.0000
Ecliptic YDOT         0.00253194 +/-    0.0000
Ecliptic ZDOT        -0.00008968 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.24641325 +/-    0.0045
Geocenter to KBO     43.27917613 +/-    0.0046
# Hcoef:  7.98

The following table shows the complete astrometric record for 19QA110. 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 (19QA110) followed by the observatory code and reference code for the source of the astrometry.

2019 08  28.210895 23 29 30.802  -04 14 18.45  24.4r 19QA110   W84  C~7XLh      
2019 08  28.388381 23 29 30.067  -04 14 23.14  24.4r 19QA110   W84  C~7XLh      
2019 08  29.211918 23 29 26.774  -04 14 45.02  24.3r 19QA110   W84  C~7XLh      
2019 08  29.387113 23 29 26.048  -04 14 49.76  24.3r 19QA110   W84  C~7XLh      
2019 09  27.014583 23 27 26.350  -04 27 50.65  24.4r 19QA110   W84  C~7XLh      
2019 09  27.176040 23 27 25.668  -04 27 54.89  24.4r 19QA110   W84  C~7XLh      
2020 10  17.010669 23 30 48.692  -04 08 51.72  24.3r 19QA110   W84  C~7XLh      
2020 10  17.174574 23 30 48.109  -04 08 55.30  24.3r 19QA110   W84  C~7XLh      
2021 09  05.096099 23 38 19.299  -03 23 01.37  24.3r 19QA110   W84  C~7XLh      
2021 09  05.195929 23 38 18.867  -03 23 03.97  24.3r 19QA110   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     0.09       0.00    -0.04
     2   0.0005    -11.95    -0.07       0.03     0.04
     3   0.0027    -65.85     0.06      -0.66     0.03
     4   0.0032    -77.70    -0.08      -0.73     0.02
     5   0.0816  -2030.90     0.03     -13.12    -0.05
     6   0.0820  -2041.95    -0.03     -13.00     0.03
     7   1.1384   1199.63     0.03    -159.45    -0.04
     8   1.1388   1190.20    -0.03    -159.30    -0.01
     9   2.0230   8486.69     0.08    -302.56    -0.09
    10   2.0232   8479.71    -0.08    -302.39     0.12

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.

19QA110    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.394    45.452    45.338
ecceobj         0.097     0.102     0.092
incobj          2.066     2.066     2.066
qmin           40.328    40.172    40.474
qmax           50.488    50.794    50.212
amean          45.285    45.343    45.229
amin           44.911    44.974    44.867
amax           45.680    45.744    45.617
emean           0.092     0.097     0.088
emin            0.078     0.083     0.073
emax            0.106     0.111     0.101
imean           1.874     1.877     1.870
imin            1.296     1.294     1.295
imax            2.400     2.409     2.390
excite_mean     0.098     0.103     0.094
fracstop        1.000     1.000     1.000
cjmean          3.105     3.105     3.106

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       177.9     178.3     178.7
kozaiamp        180.0     180.0     180.0