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: 19QX110 # Created Tue Apr 1 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.03y # First observation: 2019/08/30 # Last observation: 2021/09/09 Preliminary a, adot, b, bdot, g, gdot: 0.000018 0.020923 -0.000001 0.001059 0.022796 0.000000 # Chi-squared of fit: 1.01 DOF: 14 RMS: 0.06 # Min/Max residuals: -0.16 0.16 # Exact a, adot, b, bdot, g, gdot: 1.450036E-05 2.085311E-02 7.113519E-07 1.055810E-03 2.268884E-02 -1.280275E-03 # Covariance matrix: 7.3708E-13 6.5674E-13 -6.7827E-15 5.0177E-14 1.6506E-12 2.3205E-11 6.5674E-13 4.5666E-12 -3.1729E-14 2.5050E-13 5.2326E-12 1.1621E-10 -6.7827E-15 -3.1729E-14 3.5291E-13 -1.9734E-13 -3.9662E-14 -8.4331E-13 5.0177E-14 2.5050E-13 -1.9734E-13 1.9975E-13 3.0337E-13 6.6486E-12 1.6506E-12 5.2326E-12 -3.9662E-14 3.0337E-13 8.0805E-12 1.4053E-10 2.3205E-11 1.1621E-10 -8.4331E-13 6.6486E-12 1.4053E-10 3.0842E-09 # lat0 lon0 xBary yBary zBary JD0 -1.860254 -7.886357 0.268174 -0.031413 -0.967372 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 249.20712 +/- 1.123 Argument of Peri: 85.82457 +/- 1.068 Long of Asc Node: 23.94185 +/- 0.010 Inclination: 3.41475 +/- 0.001 Eccentricity: 0.07018626 +/- 0.0022 Semi-Major Axis: 43.77550375 +/- 0.0249 Time of Perihelion: 2491278.2592 +/- 328.7 Perihelion: 40.70306507 +/- 0.1006 Aphelion: 46.84794244 +/- 0.1015 Period (y) 289.6376 +/- 0.25 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.55944082 +/- 0.0055 Ecliptic Y -6.44962752 +/- 0.0008 Ecliptic Z -1.43071019 +/- 0.0002 Ecliptic XDOT 0.00020487 +/- 0.0000 Ecliptic YDOT 0.00251374 +/- 0.0000 Ecliptic ZDOT 0.00013213 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.04651366 +/- 0.0054 Geocenter to KBO 44.07452586 +/- 0.0055 # Hcoef: 7.48
The following table shows the complete astrometric record for 19QX110. 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 (19QX110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 33 58.505 -04 50 15.59 24.0r 19QX110 W84 C~7XLi 2019 08 30.387214 23 33 57.793 -04 50 20.12 24.0r 19QX110 W84 C~7XLi 2019 09 28.012277 23 31 58.722 -05 02 47.96 24.0r 19QX110 W84 C~7XLi 2019 09 28.177548 23 31 58.029 -05 02 52.18 24.0r 19QX110 W84 C~7XLi 2020 10 18.012125 23 34 58.047 -04 39 01.20 24.0r 19QX110 W84 C~7XLi 2020 10 18.176134 23 34 57.466 -04 39 04.50 24.0r 19QX110 W84 C~7XLi 2021 09 05.096099 23 42 11.725 -03 49 11.15 23.8r 19QX110 W84 C~7XLi 2021 09 05.195929 23 42 11.296 -03 49 13.86 23.8r 19QX110 W84 C~7XLi 2021 09 09.073508 23 41 55.299 -03 50 56.36 23.7r 19QX110 W84 C~7XLi 2021 09 09.192572 23 41 54.784 -03 50 59.64 23.7r 19QX110 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 0.01 0.00 0.01
2 0.0005 -11.57 0.00 0.05 -0.01
3 0.0788 -1941.74 0.04 16.06 0.03
4 0.0793 -1952.92 -0.04 16.27 -0.01
5 1.1357 1084.26 0.00 267.28 -0.02
6 1.1361 1074.97 -0.01 267.69 -0.01
7 2.0175 8229.86 0.06 437.36 -0.01
8 2.0178 8222.88 -0.16 437.43 -0.00
9 2.0284 7962.04 0.16 438.64 0.03
10 2.0287 7953.65 -0.05 438.70 -0.00
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.
19QX110 quality flag:2 Type: CLASSICAL SCATNEAR SCATNEAR axisobj 43.867 43.926 43.811 ecceobj 0.073 0.078 0.068 incobj 3.410 3.410 3.410 qmin 39.784 37.542 37.940 qmax 48.069 50.308 49.948 amean 43.726 43.782 43.704 amin 43.349 43.303 43.298 amax 44.157 44.185 44.214 emean 0.075 0.105 0.095 emin 0.058 0.069 0.058 emax 0.089 0.140 0.131 imean 3.020 3.349 3.054 imin 2.240 2.134 2.113 imax 3.753 4.532 4.045 excite_mean 0.092 0.121 0.110 fracstop 1.000 1.000 1.000 cjmean 3.088 3.081 3.083 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 180.5 179.6 185.9 kozaiamp 179.9 180.0 180.0