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: 19AP142 # Created Sun Dec 22 02:11:03 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 112.78d # First observation: 2018/11/15 # Last observation: 2019/03/08 Preliminary a, adot, b, bdot, g, gdot: 0.000007 0.059585 0.000036 -0.015422 0.049701 0.000000 # Chi-squared of fit: 3.74 DOF: 22 RMS: 0.09 # Min/Max residuals: -0.24 0.20 # Exact a, adot, b, bdot, g, gdot: 1.913902E-05 5.632583E-02 -4.398598E-06 -1.479091E-02 4.736836E-02 1.377587E-02 # Covariance matrix: 3.6560E-13 -3.2448E-12 8.0701E-16 -4.5381E-13 -2.1765E-13 2.3617E-11 -3.2448E-12 2.4297E-10 4.0391E-12 -3.8118E-12 1.0137E-10 4.5417E-09 8.0701E-16 4.0391E-12 3.6691E-13 -1.4140E-12 2.1228E-12 1.1347E-10 -4.5381E-13 -3.8118E-12 -1.4140E-12 1.0084E-11 -6.6908E-12 -5.3724E-10 -2.1765E-13 1.0137E-10 2.1228E-12 -6.6908E-12 5.0814E-11 2.6219E-09 2.3617E-11 4.5417E-09 1.1347E-10 -5.3724E-10 2.6219E-09 1.4916E-07 # lat0 lon0 xBary yBary zBary JD0 -9.847525 148.149608 0.990972 0.014935 0.085421 2458438.062331 # Heliocentric elements and errors Epoch: 2458430.5000 = 2018/11/08 Mean Anomaly: 119.12016 +/- 1.229 Argument of Peri: 74.38351 +/- 1.075 Long of Asc Node: 292.90734 +/- 0.014 Inclination: 17.94981 +/- 0.006 Eccentricity: 0.23636263 +/- 0.0032 Semi-Major Axis: 18.28691316 +/- 0.0366 Time of Perihelion: 2448979.1945 +/- 93.3 Perihelion: 13.96457033 +/- 0.0640 Aphelion: 22.60925598 +/- 0.0732 Period (y) 78.2022 +/- 0.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -17.07140679 +/- 0.0027 Ecliptic Y 11.76459404 +/- 0.0017 Ecliptic Z -3.61070094 +/- 0.0005 Ecliptic XDOT -0.00225250 +/- 0.0000 Ecliptic YDOT -0.00243088 +/- 0.0000 Ecliptic ZDOT -0.00097868 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 21.04461366 +/- 0.0023 Geocenter to KBO 21.11113912 +/- 0.0032 # Hcoef: 9.93
The following table shows the complete astrometric record for 19AP142. 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 (19AP142) followed by the observatory code and reference code for the source of the astrometry.
2018 11 15.56153 09 47 42.02 +02 51 37.2 23.2z 19AP142 T09 C~870S 2018 11 15.57003 09 47 42.05 +02 51 36.9 23.0z 19AP142 T09 C~870S 2018 11 15.61124 09 47 42.12 +02 51 34.8 23.0z 19AP142 T09 C~870S 2018 11 15.62300 09 47 42.14 +02 51 34.2 22.8z 19AP142 T09 C~870S 2019 01 06.56778 09 45 23.29 +02 31 00.7 23.6g 19AP142 T09 C~870S 2019 01 06.59117 09 45 23.12 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 01 06.60179 09 45 23.06 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 01 06.62123 09 45 22.91 +02 31 00.7 23.8g 19AP142 T09 C~870S 2019 01 06.62334 09 45 22.90 +02 31 00.7 23.7g 19AP142 T09 C~870S 2019 03 08.26245 09 36 35.50 +03 01 55.7 23.3r 19AP142 T09 C~870S 2019 03 08.29600 09 36 35.20 +03 01 57.2 23.3r 19AP142 T09 C~870S 2019 03 08.29809 09 36 35.20 +03 01 57.3 23.3r 19AP142 T09 C~870S 2019 03 08.31706 09 36 35.05 +03 01 58.0 23.0r 19AP142 T09 C~870S 2019 03 08.33820 09 36 34.86 +03 01 59.0 23.2r 19AP142 T09 C~870S
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 -0.11
2 0.0000 0.52 0.09 -0.13 0.08
3 0.0001 2.22 0.00 -1.75 0.02
4 0.0002 2.71 -0.02 -2.21 0.01
5 0.1424 -1538.30 -0.06 -1866.53 0.15
6 0.1424 -1540.70 -0.09 -1867.39 0.02
7 0.1425 -1541.54 0.13 -1867.69 0.04
8 0.1425 -1543.66 -0.02 -1868.45 -0.11
9 0.1425 -1543.80 0.05 -1868.50 -0.10
10 0.3086 -9616.08 0.00 -2786.13 0.10
11 0.3087 -9620.83 -0.24 -2786.23 -0.03
12 0.3087 -9620.86 0.01 -2786.14 0.06
13 0.3087 -9623.22 0.20 -2786.23 -0.05
14 0.3088 -9626.24 0.02 -2786.25 -0.08
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.
19AP142 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 18.445 19.275 17.733 ecceobj 0.242 0.252 0.244 incobj 17.904 17.870 17.940 qmin 13.321 13.663 13.378 qmax 23.856 24.502 22.056 amean 18.466 19.205 17.604 amin 18.115 18.667 17.533 amax 18.674 19.528 17.733 emean 0.261 0.231 0.235 emin 0.241 0.209 0.231 emax 0.281 0.275 0.244 imean 19.155 19.541 19.631 imin 18.844 18.998 19.513 imax 19.527 20.082 19.714 excite_mean 0.419 0.407 0.410 fracstop 0.011 0.107 0.001 cjmean 3.062 3.031 3.110 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 149.9 178.4 60.8 kozaiamp 80.9 179.9 4.1