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: 19QV109 # Created Tue Apr 1 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 2.11y # First observation: 2019/08/29 # Last observation: 2021/10/07 Preliminary a, adot, b, bdot, g, gdot: 0.000089 0.025836 -0.000011 0.003200 0.024719 0.000000 # Chi-squared of fit: 0.75 DOF: 14 RMS: 0.05 # Min/Max residuals: -0.13 0.09 # Exact a, adot, b, bdot, g, gdot: 1.617400E-05 2.533370E-02 1.662724E-06 3.133121E-03 2.413716E-02 -1.005158E-02 # Covariance matrix: 6.1003E-13 5.0711E-13 -1.2328E-14 9.0131E-14 1.1870E-12 1.3491E-11 5.0711E-13 4.7929E-12 -8.4646E-14 6.3839E-13 4.8183E-12 9.5365E-11 -1.2328E-14 -8.4646E-14 3.5114E-13 -2.0145E-13 -8.7001E-14 -1.7506E-12 9.0131E-14 6.3839E-13 -2.0145E-13 2.6344E-13 6.4772E-13 1.3219E-11 1.1870E-12 4.8183E-12 -8.7001E-14 6.4772E-13 6.3898E-12 9.6839E-11 1.3491E-11 9.5365E-11 -1.7506E-12 1.3219E-11 9.6839E-11 1.9746E-09 # lat0 lon0 xBary yBary zBary JD0 -2.257213 -9.180792 0.262763 -0.038180 -0.968754 2458724.712719 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 338.11477 +/- 0.101 Argument of Peri: 50.14567 +/- 0.084 Long of Asc Node: 7.68918 +/- 0.002 Inclination: 7.40551 +/- 0.001 Eccentricity: 0.51538839 +/- 0.0020 Semi-Major Axis: 69.12151133 +/- 0.2111 Time of Perihelion: 2471480.9756 +/- 4.1 Perihelion: 33.49708672 +/- 0.1745 Aphelion: 104.74593594 +/- 0.3498 Period (y) 574.6826 +/- 2.63 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.78544923 +/- 0.0043 Ecliptic Y -7.02604253 +/- 0.0007 Ecliptic Z -1.63167212 +/- 0.0002 Ecliptic XDOT -0.00064390 +/- 0.0000 Ecliptic YDOT 0.00301687 +/- 0.0000 Ecliptic ZDOT 0.00039979 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.40343612 +/- 0.0042 Geocenter to KBO 41.42989113 +/- 0.0043 # Hcoef: 8.01
The following table shows the complete astrometric record for 19QV109. 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 (19QV109) followed by the observatory code and reference code for the source of the astrometry.
2019 08 29.211918 23 29 49.874 -05 42 48.10 24.2r 19QV109 W84 C~7XLh 2019 08 29.387113 23 29 49.121 -05 42 52.81 24.2r 19QV109 W84 C~7XLh 2019 09 27.014583 23 27 44.427 -05 55 16.72 24.1r 19QV109 W84 C~7XLh 2019 09 27.176040 23 27 43.724 -05 55 20.71 24.1r 19QV109 W84 C~7XLh 2020 10 16.001792 23 31 31.039 -05 18 07.45 24.3r 19QV109 W84 C~7XLh 2020 10 16.175804 23 31 30.376 -05 18 10.81 24.3r 19QV109 W84 C~7XLh 2021 09 05.096099 23 39 39.788 -04 15 14.88 24.0r 19QV109 W84 C~7XLh 2021 09 05.195929 23 39 39.348 -04 15 17.46 24.0r 19QV109 W84 C~7XLh 2021 10 07.004805 23 37 19.498 -04 29 05.77 24.1r 19QV109 W84 C~7XLh 2021 10 07.169933 23 37 18.800 -04 29 09.64 24.1r 19QV109 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 0.09 0.00 0.08
2 0.0005 -12.19 -0.07 0.11 -0.05
3 0.0789 -2015.60 -0.03 49.99 0.02
4 0.0793 -2026.81 0.00 50.45 0.01
5 1.1329 1972.54 0.02 763.70 -0.13
6 1.1334 1962.11 -0.02 764.53 0.01
7 2.0202 10183.70 -0.04 1329.27 -0.02
8 2.0205 10176.62 0.02 1329.52 0.05
9 2.1076 7923.69 -0.00 1401.11 -0.00
10 2.1080 7912.55 0.02 1401.70 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.
19QV109 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 69.791 70.320 69.277 ecceobj 0.521 0.526 0.516 incobj 7.390 7.391 7.390 qmin 32.564 32.468 32.659 qmax 118.385 118.857 106.987 amean 68.565 68.909 64.821 amin 63.048 63.296 61.321 amax 76.075 76.196 70.223 emean 0.511 0.513 0.482 emin 0.467 0.470 0.449 emax 0.556 0.560 0.524 imean 7.966 8.192 8.010 imin 6.653 6.869 6.775 imax 9.266 9.733 9.354 excite_mean 0.530 0.532 0.502 fracstop 1.000 1.000 1.000 cjmean 3.007 3.006 3.009 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 168.5 168.1 179.5 kozaiamp 180.0 180.0 180.0