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: 19QJ111 # Created Mon Apr 28 01:11:17 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 2.10y # First observation: 2019/08/30 # Last observation: 2021/10/06 Preliminary a, adot, b, bdot, g, gdot: 0.000013 0.022196 -0.000000 0.000372 0.023546 0.000000 # Chi-squared of fit: 0.58 DOF: 10 RMS: 0.05 # Min/Max residuals: -0.14 0.09 # Exact a, adot, b, bdot, g, gdot: 1.504313E-05 2.218950E-02 -1.684359E-07 3.727430E-04 2.348677E-02 3.564780E-04 # Covariance matrix: 7.4127E-13 1.6541E-12 -8.2906E-16 3.5356E-14 1.8606E-12 4.5441E-11 1.6541E-12 1.8119E-11 -1.0748E-14 3.5766E-13 1.1092E-11 4.5837E-10 -8.2906E-16 -1.0748E-14 3.8128E-13 -1.8817E-13 -5.4856E-15 -2.7723E-13 3.5356E-14 3.5766E-13 -1.8817E-13 1.8581E-13 2.1535E-13 9.1513E-12 1.8606E-12 1.1092E-11 -5.4856E-15 2.1535E-13 9.9059E-12 2.7654E-10 4.5441E-11 4.5837E-10 -2.7723E-13 9.1513E-12 2.7654E-10 1.1727E-08 # lat0 lon0 xBary yBary zBary JD0 -2.408888 -7.135477 0.280835 -0.040523 -0.963432 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 136.13970 +/- 11.228 Argument of Peri: 154.30257 +/- 11.215 Long of Asc Node: 60.55761 +/- 0.023 Inclination: 2.53878 +/- 0.000 Eccentricity: 0.01855573 +/- 0.0032 Semi-Major Axis: 42.96327530 +/- 0.0138 Time of Perihelion: 2419822.5438 +/- 3208.1 Perihelion: 42.16606057 +/- 0.1363 Aphelion: 43.76049003 +/- 0.1363 Period (y) 281.6140 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.13483286 +/- 0.0057 Ecliptic Y -5.68949035 +/- 0.0007 Ecliptic Z -1.78955336 +/- 0.0002 Ecliptic XDOT 0.00037277 +/- 0.0000 Ecliptic YDOT 0.00256179 +/- 0.0000 Ecliptic ZDOT 0.00004144 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.54522485 +/- 0.0056 Geocenter to KBO 42.57715305 +/- 0.0057 # Hcoef: 8.42
The following table shows the complete astrometric record for 19QJ111. 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 (19QJ111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 37 36.813 -05 02 40.10 24.7r 19QJ111 W84 C~7XLi 2019 08 30.387214 23 37 36.091 -05 02 44.92 24.7r 19QJ111 W84 C~7XLi 2019 09 28.012277 23 35 33.824 -05 15 48.89 24.7r 19QJ111 W84 C~7XLj 2019 09 28.177548 23 35 33.108 -05 15 53.04 24.7r 19QJ111 W84 C~7XLj 2021 09 09.073508 23 46 12.304 -04 04 17.04 24.6r 19QJ111 W84 C~7XLj 2021 09 09.192572 23 46 11.792 -04 04 20.35 24.6r 19QJ111 W84 C~7XLj 2021 10 06.002765 23 44 17.375 -04 16 25.03 24.8r 19QJ111 W84 C~7XLj 2021 10 06.167954 23 44 16.688 -04 16 29.21 24.8r 19QJ111 W84 C~7XLj
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 -0.02 0.00 0.09
2 0.0005 -11.81 0.02 -0.15 -0.01
3 0.0788 -1999.59 -0.01 3.00 -0.14
4 0.0793 -2011.06 0.01 3.42 0.06
5 2.0284 8469.95 -0.01 149.28 -0.03
6 2.0287 8461.60 0.01 149.30 -0.03
7 2.1021 6600.40 0.00 167.12 0.05
8 2.1025 6589.30 0.00 167.38 0.01
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.
19QJ111 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.022 43.084 42.967 ecceobj 0.014 0.021 0.013 incobj 2.539 2.539 2.539 qmin 41.185 41.284 40.910 qmax 44.778 44.835 44.942 amean 42.908 42.971 42.852 amin 42.579 42.648 42.532 amax 43.239 43.301 43.188 emean 0.017 0.016 0.021 emin 0.000 0.000 0.001 emax 0.036 0.035 0.041 imean 1.132 1.125 1.144 imin 0.000 0.040 0.044 imax 1.895 1.872 1.920 excite_mean 0.027 0.026 0.031 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.087 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 177.5 170.3 172.6 kozaiamp 179.9 180.0 180.0