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: 19SQ247 # Created Mon Apr 28 01:11:17 2025 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 32.11d # First observation: 2019/09/29 # Last observation: 2019/10/31 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.017613 0.000000 0.009492 0.022936 0.000000 # Chi-squared of fit: 5.67 DOF: 28 RMS: 0.10 # Min/Max residuals: -0.29 0.23 # Exact a, adot, b, bdot, g, gdot: 1.282164E-05 1.827754E-02 6.631781E-06 9.510713E-03 2.301167E-02 3.612937E-03 # Covariance matrix: 6.6410E-13 4.3403E-10 5.9897E-14 2.2747E-11 7.4194E-11 1.7420E-09 4.3403E-10 6.3899E-07 8.7156E-11 3.2645E-08 1.0695E-07 1.8336E-06 5.9897E-14 8.7156E-11 3.6861E-13 8.7300E-14 1.4601E-11 2.5706E-10 2.2747E-11 3.2645E-08 8.7300E-14 1.7570E-09 5.5074E-09 1.1931E-07 7.4194E-11 1.0695E-07 1.4601E-11 5.5074E-09 1.8003E-08 3.6632E-07 1.7420E-09 1.8336E-06 2.5706E-10 1.1931E-07 3.6632E-07 4.0904E-05 # lat0 lon0 xBary yBary zBary JD0 -16.920642 31.430669 0.426479 -0.263164 -0.865046 2458755.941191 # Heliocentric elements and errors Epoch: 2458750.5000 = 2019/09/24 Mean Anomaly: 103.55472 +/- 65.609 Argument of Peri: 204.30370 +/- 52.993 Long of Asc Node: 59.77695 +/- 1.032 Inclination: 31.60981 +/- 0.840 Eccentricity: 0.18450704 +/- 0.2264 Semi-Major Axis: 41.30980159 +/- 4.6083 Time of Perihelion: 2430854.2716 +/- 17046.6 Perihelion: 33.68785239 +/- 10.0809 Aphelion: 48.93175079 +/- 10.8304 Period (y) 265.5143 +/- 44.43 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 36.47142472 +/- 0.2069 Ecliptic Y 21.78047864 +/- 0.1264 Ecliptic Z -12.64751808 +/- 0.0737 Ecliptic XDOT -0.00049357 +/- 0.0006 Ecliptic YDOT 0.00224264 +/- 0.0004 Ecliptic ZDOT 0.00095723 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 44.32283593 +/- 0.1824 Geocenter to KBO 43.45620813 +/- 0.2534 # Hcoef: 8.77
The following table shows the complete astrometric record for 19SQ247. 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 (19SQ247) followed by the observatory code and reference code for the source of the astrometry.
2019 09 29.44039 02 20 21.38 -03 55 57.3 25.5r 19SQ247 T09 C~85Kh 2019 09 29.46287 02 20 21.29 -03 55 57.8 25.5r 19SQ247 T09 C~85Kh 2019 09 29.50563 02 20 21.13 -03 55 59.0 25.5i 19SQ247 T09 C~85Kh 2019 09 29.52392 02 20 21.05 -03 55 59.4 25.5i 19SQ247 T09 C~85Kh 2019 10 27.28540 02 18 19.44 -04 06 30.7 24.9r 19SQ247 T09 C~85Kh 2019 10 27.29655 02 18 19.38 -04 06 30.9 25.1r 19SQ247 T09 C~85Kh 2019 10 27.41777 02 18 18.81 -04 06 33.0 24.8i 19SQ247 T09 C~85Kh 2019 10 27.43602 02 18 18.73 -04 06 33.4 24.5i 19SQ247 T09 C~85Kh 2019 10 27.45429 02 18 18.63 -04 06 33.6 24.9i 19SQ247 T09 C~85Kh 2019 10 27.45813 02 18 18.60 -04 06 33.6 24.6i 19SQ247 T09 C~85Kh 2019 10 27.47257 02 18 18.55 -04 06 34.1 24.6i 19SQ247 T09 C~85Kh 2019 10 31.48092 02 17 59.82 -04 07 43.2 24.8z 19SQ247 T09 C~85Kh 2019 10 31.48475 02 17 59.80 -04 07 43.4 24.7z 19SQ247 T09 C~85Kh 2019 10 31.48859 02 17 59.78 -04 07 43.5 25.5z 19SQ247 T09 C~85Kh 2019 10 31.50302 02 17 59.71 -04 07 43.9 24.9z 19SQ247 T09 C~85Kh 2019 10 31.50685 02 17 59.71 -04 07 44.1 25.4z 19SQ247 T09 C~85Kh 2019 10 31.55090 02 17 59.49 -04 07 44.6 24.7z 19SQ247 T09 C~85Kh
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 -0.05 0.00 -0.02
2 0.0001 -1.44 -0.03 -0.01 0.06
3 0.0002 -4.10 0.08 -0.33 -0.07
4 0.0002 -5.36 0.01 -0.29 0.03
5 0.0762 -1931.31 0.06 24.54 -0.11
6 0.0763 -1932.22 -0.05 24.66 -0.07
7 0.0766 -1940.96 0.05 25.58 0.01
8 0.0766 -1942.22 0.12 25.61 -0.08
9 0.0767 -1943.70 -0.02 25.93 0.11
10 0.0767 -1944.12 -0.17 26.08 0.23
11 0.0767 -1944.99 0.01 25.86 -0.08
12 0.0877 -2232.06 0.07 56.03 0.22
13 0.0877 -2232.41 -0.00 55.94 0.10
14 0.0877 -2232.72 -0.04 55.95 0.07
15 0.0878 -2233.85 -0.12 55.93 -0.07
16 0.0878 -2233.91 0.09 55.74 -0.29
17 0.0879 -2237.18 0.00 56.39 -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.
19SQ247 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0