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: 19QR111 # Created Tue Apr 1 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 1.15y # First observation: 2019/08/30 # Last observation: 2020/10/22 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.029045 -0.000000 -0.003344 0.026763 0.000000 # Chi-squared of fit: 1.05 DOF: 10 RMS: 0.06 # Min/Max residuals: -0.11 0.13 # Exact a, adot, b, bdot, g, gdot: 1.709852E-05 2.904306E-02 -1.914704E-06 -3.345337E-03 2.675485E-02 -3.454036E-03 # Covariance matrix: 7.4090E-13 1.8260E-12 1.3073E-14 -3.6962E-13 1.9812E-12 9.5470E-11 1.8260E-12 6.4705E-10 6.2905E-12 -1.7968E-10 1.9546E-10 4.8320E-08 1.3073E-14 6.2905E-12 4.5490E-13 -2.1092E-12 1.8703E-12 4.7182E-10 -3.6962E-13 -1.7968E-10 -2.1092E-12 5.0709E-11 -5.3409E-11 -1.3478E-08 1.9812E-12 1.9546E-10 1.8703E-12 -5.3409E-11 6.4236E-11 1.4347E-08 9.5470E-11 4.8320E-08 4.7182E-10 -1.3478E-08 1.4347E-08 3.6252E-06 # lat0 lon0 xBary yBary zBary JD0 -3.094354 -8.497613 0.257833 -0.052392 -0.969272 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 332.75448 +/- 8.717 Argument of Peri: 246.37516 +/- 15.545 Long of Asc Node: 146.58799 +/- 0.035 Inclination: 7.23509 +/- 0.009 Eccentricity: 0.21341427 +/- 0.0486 Semi-Major Axis: 46.58471790 +/- 0.9382 Time of Perihelion: 2467509.8382 +/- 2799.6 Perihelion: 36.64287412 +/- 2.3797 Aphelion: 56.52656168 +/- 2.5326 Period (y) 317.9607 +/- 9.61 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 37.83696608 +/- 0.0111 Ecliptic Y -5.92039927 +/- 0.0017 Ecliptic Z -2.01766632 +/- 0.0006 Ecliptic XDOT 0.00008029 +/- 0.0002 Ecliptic YDOT 0.00299485 +/- 0.0000 Ecliptic ZDOT -0.00032298 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.35046424 +/- 0.0109 Geocenter to KBO 37.37640508 +/- 0.0112 # Hcoef: 9.00
The following table shows the complete astrometric record for 19QR111. 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 (19QR111) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 33 40.975 -06 12 45.61 24.6r 19QR111 W84 C~7XLj 2019 08 30.387214 23 33 40.171 -06 12 51.30 24.6r 19QR111 W84 C~7XLj 2019 09 28.012277 23 31 25.796 -06 28 12.83 24.9r 19QR111 W84 C~7XLj 2019 09 28.177548 23 31 25.011 -06 28 17.68 24.9r 19QR111 W84 C~7XLj 2020 10 20.004233 23 36 16.591 -06 09 28.38 24.6r 19QR111 W84 C~7XLj 2020 10 20.172968 23 36 15.948 -06 09 32.27 24.6r 19QR111 W84 C~7XLj 2020 10 22.003924 23 36 09.127 -06 10 13.33 24.9r 19QR111 W84 C~7XLj 2020 10 22.173214 23 36 08.491 -06 10 17.30 24.9r 19QR111 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 0.01 0.00 -0.01
2 0.0005 -13.26 -0.01 -0.48 -0.03
3 0.0788 -2217.75 0.01 -55.21 -0.08
4 0.0793 -2230.41 -0.02 -55.05 0.13
5 1.1411 2208.90 -0.08 -738.61 0.04
6 1.1416 2198.55 0.06 -738.38 -0.04
7 1.1466 2088.87 0.06 -735.70 0.11
8 1.1471 2078.59 -0.04 -735.58 -0.11
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.
19QR111 quality flag:2 Type: SCATNEAR CENTAURR SCATNEAR axisobj 46.712 49.833 46.523 ecceobj 0.218 0.355 0.197 incobj 7.232 7.198 7.239 qmin 35.295 29.671 36.339 qmax 58.539 81.485 56.698 amean 46.582 50.450 46.312 amin 46.093 44.069 45.887 amax 47.208 56.598 46.816 emean 0.223 0.376 0.197 emin 0.205 0.319 0.182 emax 0.242 0.443 0.213 imean 7.070 4.784 6.697 imin 5.812 2.110 5.822 imax 8.259 7.507 7.641 excite_mean 0.255 0.386 0.229 fracstop 1.000 0.285 1.000 cjmean 3.053 2.987 3.065 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 183.4 190.1 178.7 kozaiamp 180.0 179.9 180.0