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: 19QC110 # Created Tue Apr 1 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/28 # Last observation: 2021/10/04 Preliminary a, adot, b, bdot, g, gdot: 0.000010 0.020911 -0.000000 -0.000029 0.022439 0.000000 # Chi-squared of fit: 0.43 DOF: 10 RMS: 0.04 # Min/Max residuals: -0.07 0.07 # Exact a, adot, b, bdot, g, gdot: 1.479504E-05 2.089629E-02 -1.098137E-07 -2.852036E-05 2.239281E-02 1.092846E-04 # Covariance matrix: 7.4073E-13 1.4462E-12 1.9416E-16 -2.6800E-15 1.6863E-12 4.3287E-11 1.4462E-12 1.5415E-11 1.4748E-15 -2.6222E-14 9.1803E-12 4.1601E-10 1.9416E-16 1.4748E-15 3.8281E-13 -1.8917E-13 1.0264E-15 4.0001E-14 -2.6800E-15 -2.6222E-14 -1.8917E-13 1.7954E-13 -1.5283E-14 -7.1699E-13 1.6863E-12 9.1803E-12 1.0264E-15 -1.5283E-14 8.2249E-12 2.4541E-10 4.3287E-11 4.1601E-10 4.0001E-14 -7.1699E-13 2.4541E-10 1.1369E-08 # lat0 lon0 xBary yBary zBary JD0 -0.581097 -7.873987 0.301152 -0.009717 -0.958369 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 12.48179 +/- 35.369 Argument of Peri: 248.78682 +/- 35.960 Long of Asc Node: 90.26257 +/- 0.115 Inclination: 0.57518 +/- 0.000 Eccentricity: 0.00793890 +/- 0.0013 Semi-Major Axis: 45.97657769 +/- 0.0139 Time of Perihelion: 2454772.4953 +/- 11187.4 Perihelion: 45.61157413 +/- 0.0605 Aphelion: 46.34158124 +/- 0.0605 Period (y) 311.7548 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 45.14483217 +/- 0.0057 Ecliptic Y -6.55404748 +/- 0.0008 Ecliptic Z -0.45291067 +/- 0.0001 Ecliptic XDOT 0.00037167 +/- 0.0000 Ecliptic YDOT 0.00252953 +/- 0.0000 Ecliptic ZDOT -0.00000385 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.62035223 +/- 0.0056 Geocenter to KBO 44.65719382 +/- 0.0057 # Hcoef: 7.79
The following table shows the complete astrometric record for 19QC110. 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 (19QC110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 31 59.604 -03 39 27.73 24.3r 19QC110 W84 C~7XLh 2019 08 28.388381 23 31 58.904 -03 39 32.22 24.3r 19QC110 W84 C~7XLh 2019 09 29.013696 23 29 50.440 -03 53 19.09 24.3r 19QC110 W84 C~7XLh 2019 09 29.177510 23 29 49.779 -03 53 23.15 24.3r 19QC110 W84 C~7XLh 2021 09 06.108763 23 40 12.623 -02 46 40.85 24.2r 19QC110 W84 C~7XLh 2021 09 06.196686 23 40 12.254 -02 46 43.16 24.2r 19QC110 W84 C~7XLh 2021 10 04.002582 23 38 19.143 -02 58 52.97 24.3r 19QC110 W84 C~7XLh 2021 10 04.175328 23 38 18.447 -02 58 57.33 24.3r 19QC110 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 -0.01 0.00 0.02
2 0.0005 -11.40 0.01 0.01 0.00
3 0.0871 -2104.51 -0.04 -1.15 -0.05
4 0.0875 -2115.20 0.04 -0.98 0.03
5 2.0257 8038.10 0.06 -14.13 -0.04
6 2.0260 8032.10 -0.06 -14.06 0.01
7 2.1021 6184.90 0.07 -12.19 0.00
8 2.1026 6173.59 -0.07 -12.06 0.03
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.
19QC110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.049 46.107 45.998 ecceobj 0.010 0.013 0.013 incobj 0.574 0.574 0.574 qmin 44.790 44.795 44.445 qmax 47.215 47.293 47.435 amean 45.910 45.969 45.858 amin 45.555 45.611 45.499 amax 46.267 46.332 46.217 emean 0.009 0.009 0.015 emin 0.000 0.000 0.001 emax 0.020 0.021 0.026 imean 1.115 1.116 1.114 imin 0.718 0.734 0.706 imax 1.438 1.434 1.445 excite_mean 0.022 0.022 0.025 fracstop 1.000 1.000 1.000 cjmean 3.125 3.125 3.124 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 201.9 184.7 212.7 kozaiamp 179.9 179.9 179.9