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: 19SP235 # Created Sun Apr 27 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: 0.000010 0.021871 0.000001 -0.001241 0.023260 0.000000 # Chi-squared of fit: 3.04 DOF: 10 RMS: 0.11 # Min/Max residuals: -0.28 0.17 # Exact a, adot, b, bdot, g, gdot: 1.429799E-05 2.181378E-02 -9.747422E-07 -1.237062E-03 2.318191E-02 -1.456163E-03 # Covariance matrix: 7.3956E-13 6.1605E-13 4.2036E-15 -3.9640E-14 1.6411E-12 1.5240E-11 6.1605E-13 4.6276E-12 3.3412E-14 -2.7734E-13 5.1329E-12 1.0945E-10 4.2036E-15 3.3412E-14 3.5392E-13 -2.0723E-13 3.3124E-14 8.8160E-13 -3.9640E-14 -2.7734E-13 -2.0723E-13 2.6507E-13 -2.8884E-13 -7.2099E-12 1.6411E-12 5.1329E-12 3.3124E-14 -2.8884E-13 8.0018E-12 1.1281E-10 1.5240E-11 1.0945E-10 8.8160E-13 -7.2099E-12 1.1281E-10 2.8546E-09 # lat0 lon0 xBary yBary zBary JD0 -1.972022 -7.598261 0.273037 -0.033253 -0.965949 2458725.713221 # Heliocentric elements and errors Epoch: 2458720.5000 = 2019/08/25 Mean Anomaly: 272.15198 +/- 0.377 Argument of Peri: 306.49144 +/- 0.298 Long of Asc Node: 141.40809 +/- 0.010 Inclination: 3.78137 +/- 0.001 Eccentricity: 0.06964900 +/- 0.0024 Semi-Major Axis: 44.01035507 +/- 0.0246 Time of Perihelion: 2484743.6709 +/- 109.5 Perihelion: 40.94507790 +/- 0.1089 Aphelion: 47.07563223 +/- 0.1097 Period (y) 291.9715 +/- 0.24 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 43.65775351 +/- 0.0052 Ecliptic Y -6.10590656 +/- 0.0007 Ecliptic Z -1.48445364 +/- 0.0002 Ecliptic XDOT 0.00017376 +/- 0.0000 Ecliptic YDOT 0.00257762 +/- 0.0000 Ecliptic ZDOT -0.00014032 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.10765397 +/- 0.0052 Geocenter to KBO 43.13707521 +/- 0.0053 # Hcoef: 9.48
The following table shows the complete astrometric record for 19SP235. 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 (19SP235) followed by the observatory code and reference code for the source of the astrometry.
2019 08 30.212420 23 35 12.848 -04 49 35.12 25.9r 19SP235 W84 C~7XM8 2019 08 30.387214 23 35 12.117 -04 49 40.04 25.9r 19SP235 W84 C~7XM8 2019 09 28.012277 23 33 11.999 -05 02 56.47 25.7r 19SP235 W84 C~7XM8 2019 09 28.177548 23 33 11.288 -05 03 00.50 25.7r 19SP235 W84 C~7XM8 2020 10 18.012125 23 36 35.107 -04 45 36.88 25.8r 19SP235 W84 C~7XM8 2020 10 18.176134 23 36 34.524 -04 45 40.30 25.8r 19SP235 W84 C~7XM8 2021 10 06.002765 23 42 05.973 -04 14 44.84 25.9r 19SP235 W84 C~7XM8 2021 10 06.167954 23 42 05.283 -04 14 49.13 25.9r 19SP235 W84 C~7XM8
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 0.12 0.00 0.03
2 0.0005 -11.98 -0.12 -0.20 0.01
3 0.0788 -1975.75 0.02 -22.08 -0.28
4 0.0793 -1987.10 -0.02 -21.58 0.17
5 1.1357 1223.43 -0.05 -268.04 0.04
6 1.1361 1214.08 0.06 -267.73 0.13
7 2.1021 6501.89 0.11 -532.72 -0.06
8 2.1025 6490.70 -0.11 -532.55 -0.02
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.
19SP235 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.109 44.165 44.054 ecceobj 0.074 0.078 0.069 incobj 3.778 3.778 3.779 qmin 39.516 39.397 39.634 qmax 48.702 48.904 48.430 amean 43.971 44.026 43.918 amin 43.620 43.676 43.559 amax 44.352 44.405 44.296 emean 0.081 0.086 0.077 emin 0.065 0.068 0.060 emax 0.098 0.102 0.093 imean 3.229 3.232 3.225 imin 2.480 2.481 2.478 imax 3.931 3.935 3.929 excite_mean 0.099 0.103 0.096 fracstop 1.000 1.000 1.000 cjmean 3.089 3.089 3.089 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 178.9 178.7 178.3 kozaiamp 180.0 180.0 179.9