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: 19QN110 # Created Sun Apr 27 01:11:16 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: 0.000001 0.018241 0.000001 -0.000912 0.020990 0.000000 # Chi-squared of fit: 7.30 DOF: 10 RMS: 0.17 # Min/Max residuals: -0.36 0.29 # Exact a, adot, b, bdot, g, gdot: 1.408248E-05 1.823994E-02 -4.839458E-07 -9.118926E-04 2.098010E-02 1.747214E-04 # Covariance matrix: 7.3915E-13 5.0494E-13 3.6312E-15 -3.0954E-14 1.4851E-12 1.6446E-11 5.0494E-13 3.7473E-12 2.5939E-14 -2.0576E-13 4.1374E-12 1.1069E-10 3.6312E-15 2.5939E-14 3.5587E-13 -2.0824E-13 2.6240E-14 8.6238E-13 -3.0954E-14 -2.0576E-13 -2.0824E-13 2.6109E-13 -2.1395E-13 -6.7864E-12 1.4851E-12 4.1374E-12 2.6240E-14 -2.1395E-13 6.6277E-12 1.1454E-10 1.6446E-11 1.1069E-10 8.6238E-13 -6.7864E-12 1.1454E-10 3.6560E-09 # lat0 lon0 xBary yBary zBary JD0 -1.156996 -7.601718 0.305703 -0.019320 -0.956781 2458723.711696 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 173.83123 +/- 2.683 Argument of Peri: 26.99499 +/- 2.688 Long of Asc Node: 150.47760 +/- 0.011 Inclination: 3.08471 +/- 0.001 Eccentricity: 0.06552253 +/- 0.0004 Semi-Major Axis: 45.64982845 +/- 0.0126 Time of Perihelion: 2516979.2928 +/- 839.5 Perihelion: 42.65873619 +/- 0.0207 Aphelion: 48.64092070 +/- 0.0217 Period (y) 308.4373 +/- 0.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 48.14663196 +/- 0.0058 Ecliptic Y -6.74057411 +/- 0.0008 Ecliptic Z -0.96245764 +/- 0.0001 Ecliptic XDOT 0.00034355 +/- 0.0000 Ecliptic YDOT 0.00235721 +/- 0.0000 Ecliptic ZDOT -0.00011966 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 48.62571164 +/- 0.0057 Geocenter to KBO 47.66420781 +/- 0.0058 # Hcoef: 9.28
The following table shows the complete astrometric record for 19QN110. 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 (19QN110) followed by the observatory code and reference code for the source of the astrometry.
2019 08 28.210895 23 33 54.491 -04 04 45.15 26.0r 19QN110 W84 C~7XLi 2019 08 28.388381 23 33 53.839 -04 04 49.49 26.0r 19QN110 W84 C~7XLi 2019 09 29.013696 23 31 52.420 -04 18 09.28 26.1r 19QN110 W84 C~7XLi 2019 09 29.177510 23 31 51.789 -04 18 13.63 26.1r 19QN110 W84 C~7XLi 2020 10 18.012125 23 34 38.813 -04 03 41.11 25.9r 19QN110 W84 C~7XLi 2020 10 18.176134 23 34 38.283 -04 03 45.04 25.9r 19QN110 W84 C~7XLi 2021 10 04.002582 23 39 24.718 -03 36 22.83 26.2r 19QN110 W84 C~7XLi 2021 10 04.175328 23 39 24.065 -03 36 27.56 26.2r 19QN110 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 -0.07 0.00 -0.04
2 0.0005 -10.68 0.07 -0.13 -0.07
3 0.0871 -1995.36 0.08 -17.43 0.24
4 0.0875 -2005.75 -0.07 -17.70 -0.06
5 1.1411 634.44 0.08 -203.38 0.24
6 1.1416 625.60 -0.08 -203.86 -0.36
7 2.1021 5213.45 0.13 -394.27 0.29
8 2.1026 5202.59 -0.13 -394.73 -0.23
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.
19QN110 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.724 45.760 45.688 ecceobj 0.063 0.062 0.063 incobj 3.078 3.078 3.077 qmin 41.800 41.868 41.720 qmax 49.623 49.691 49.561 amean 45.596 45.632 45.560 amin 45.225 45.270 45.192 amax 45.977 46.017 45.943 emean 0.066 0.066 0.067 emin 0.053 0.053 0.055 emax 0.080 0.080 0.080 imean 2.557 2.555 2.559 imin 2.095 2.095 2.091 imax 2.987 2.980 2.995 excite_mean 0.080 0.080 0.081 fracstop 1.000 1.000 1.000 cjmean 3.113 3.114 3.113 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 178.1 178.8 177.4 kozaiamp 180.0 179.9 180.0