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: 19QF110
# Created Mon Apr 28 01:11:16 2025
# Orbit generated from Bernstein formalism
# Fitting 8 observations of 8
# Arc: 1.15y
# First observation: 2019/08/28
# Last observation: 2020/10/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.023060 -0.000000 0.001129 0.023886 0.000000
# Chi-squared of fit: 7.04 DOF: 10 RMS: 0.17
# Min/Max residuals: -0.37 0.38
# Exact a, adot, b, bdot, g, gdot:
1.494201E-05 2.307995E-02 4.511106E-07 1.133662E-03 2.388560E-02 5.359189E-04
# Covariance matrix:
7.4023E-13 1.0877E-12 -4.0645E-15 1.0518E-13 1.6935E-12 7.8665E-11
1.0877E-12 8.6107E-11 -5.1314E-13 1.3380E-11 3.6646E-11 1.0071E-08
-4.0645E-15 -5.1314E-13 3.9958E-13 -4.4088E-13 -2.0441E-13 -6.1770E-11
1.0518E-13 1.3380E-11 -4.4088E-13 2.7467E-12 5.3272E-12 1.6108E-09
1.6935E-12 3.6646E-11 -2.0441E-13 5.3272E-12 1.9315E-11 4.0082E-09
7.8665E-11 1.0071E-08 -6.1770E-11 1.6108E-09 4.0082E-09 1.2127E-06
# lat0 lon0 xBary yBary zBary JD0
0.104522 -8.401907 0.292308 0.001757 -0.961150 2458723.711696
# Heliocentric elements and errors
Epoch: 2458720.5000 = 2019/08/25
Mean Anomaly: 46.63642 +/- 62.956
Argument of Peri: 313.21551 +/- 68.238
Long of Asc Node: 349.11376 +/- 0.002
Inclination: 2.80714 +/- 0.003
Eccentricity: 0.02610259 +/- 0.0372
Semi-Major Axis: 43.59733286 +/- 0.1227
Time of Perihelion: 2445099.4370 +/- 18387.3
Perihelion: 42.45932961 +/- 1.6243
Aphelion: 44.73533611 +/- 1.6248
Period (y) 287.8711 +/- 1.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.32778736 +/- 0.0076
Ecliptic Y -6.55390788 +/- 0.0011
Ecliptic Z 0.07639593 +/- 0.0000
Ecliptic XDOT 0.00045555 +/- 0.0001
Ecliptic YDOT 0.00260873 +/- 0.0000
Ecliptic ZDOT 0.00012983 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.83224402 +/- 0.0075
Geocenter to KBO 41.86623396 +/- 0.0077
# Hcoef: 9.24
The following table shows the complete astrometric record for 19QF110. 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 (19QF110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 28 57.939 -03 14 09.38 25.4r 19QF110 W84 C~7XLh 2019 08 28.388381 23 28 57.182 -03 14 14.09 25.4r 19QF110 W84 C~7XLh 2019 09 29.013696 23 26 40.466 -03 28 29.09 25.5r 19QF110 W84 C~7XLh 2019 09 29.177510 23 26 39.778 -03 28 33.75 25.5r 19QF110 W84 C~7XLh 2020 10 17.010669 23 30 12.638 -03 01 22.18 25.6r 19QF110 W84 C~7XLh 2020 10 17.174574 23 30 12.062 -03 01 25.95 25.6r 19QF110 W84 C~7XLh 2020 10 21.004397 23 29 58.736 -03 02 49.95 25.4r 19QF110 W84 C~7XLh 2020 10 21.174149 23 29 58.134 -03 02 52.84 25.4r 19QF110 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 0.07 0.00 0.06
2 0.0005 -12.28 -0.07 0.14 0.00
3 0.0871 -2230.86 -0.04 20.59 0.16
4 0.0875 -2242.16 0.04 20.36 -0.23
5 1.1384 1330.69 -0.14 263.94 0.10
6 1.1388 1321.27 0.15 263.87 -0.11
7 1.1493 1104.71 -0.02 265.40 -0.37
8 1.1498 1095.28 0.02 266.30 0.38
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.
19QF110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.641 45.001 43.445 ecceobj 0.025 0.143 0.045 incobj 2.810 2.816 2.808 qmin 41.873 37.870 40.182 qmax 45.329 52.053 46.682 amean 43.529 44.895 43.324 amin 43.199 44.514 42.987 amax 43.866 45.304 43.672 emean 0.018 0.136 0.052 emin 0.001 0.122 0.033 emax 0.034 0.151 0.069 imean 3.518 3.728 3.358 imin 2.772 2.923 2.450 imax 4.194 4.452 4.229 excite_mean 0.064 0.151 0.079 fracstop 1.000 1.000 1.000 cjmean 3.091 3.084 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 178.5 179.3 179.7 kozaiamp 179.9 179.9 180.0