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: 19AR143 # Created Sun Apr 27 01:11:11 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 39 observations of 39 # Arc: 10.00y # First observation: 2014/12/30 # Last observation: 2024/12/31 # Chi-squared of fit: 12.63 DOF: 72 RMS: 0.10 # Min/Max residuals: -0.28 0.33 # Exact a, adot, b, bdot, g, gdot: 1.566006E-05 2.645565E-02 8.203199E-06 1.373264E-02 2.632491E-02 5.835180E-04 # Covariance matrix: 1.0545E-13 -2.7698E-14 7.0132E-15 -7.7175E-15 9.5965E-14 -6.1274E-14 -2.7698E-14 2.4062E-14 -7.3492E-15 1.0105E-14 -8.3799E-15 8.4685E-14 7.0132E-15 -7.3492E-15 6.4286E-14 -1.4158E-14 4.7535E-15 -3.1518E-14 -7.7175E-15 1.0105E-14 -1.4158E-14 9.7317E-15 -5.8216E-16 4.4248E-14 9.5965E-14 -8.3799E-15 4.7535E-15 -5.8216E-16 2.7740E-13 5.6354E-15 -6.1274E-14 8.4685E-14 -3.1518E-14 4.4248E-14 5.6354E-15 3.7242E-13 # lat0 lon0 xBary yBary zBary JD0 -14.691767 137.988658 0.628827 -0.191139 -0.729776 2457021.837105 # Heliocentric elements and errors Epoch: 2457022.5000 = 2014/12/31 Mean Anomaly: 1.12791 +/- 0.003 Argument of Peri: 328.60652 +/- 0.006 Long of Asc Node: 162.93180 +/- 0.000 Inclination: 30.45624 +/- 0.000 Eccentricity: 0.26293085 +/- 0.0001 Semi-Major Axis: 52.53213110 +/- 0.0066 Time of Perihelion: 2456586.7799 +/- 1.2 Perihelion: 38.71981323 +/- 0.0063 Aphelion: 66.34444896 +/- 0.0093 Period (y) 380.7551 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.44481122 +/- 0.0005 Ecliptic Y 25.56508987 +/- 0.0005 Ecliptic Z -9.63393773 +/- 0.0002 Ecliptic XDOT -0.00215822 +/- 0.0000 Ecliptic YDOT -0.00176787 +/- 0.0000 Ecliptic ZDOT 0.00136624 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.72471894 +/- 0.0005 Geocenter to KBO 37.98684708 +/- 0.0008 # Hcoef: 7.23
The following table shows the complete astrometric record for 19AR143. 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 (19AR143) followed by the observatory code and reference code for the source of the astrometry.
2014 12 30.336327 09 03 52.10 +01 25 21.7 23.2r 19AR143 W84 C~89Vd 2015 01 16.37961 09 02 38.53 +01 29 40.1 22.8z 19AR143 T09 C~8eYm 2015 01 16.48492 09 02 38.03 +01 29 42.3 22.8z 19AR143 T09 C~8eYm 2015 01 16.49591 09 02 37.97 +01 29 42.5 22.6z 19AR143 T09 C~8eYm 2015 01 16.50946 09 02 37.90 +01 29 42.8 22.7z 19AR143 T09 C~8eYm 2015 01 16.52039 09 02 37.86 +01 29 43.1 22.6z 19AR143 T09 C~8eYm 2015 01 16.52316 09 02 37.85 +01 29 43.1 22.6z 19AR143 T09 C~8eYm 2015 01 21.44802 09 02 14.34 +01 31 30.0 23.1i 19AR143 T09 C~8eYm 2015 01 21.47600 09 02 14.19 +01 31 30.5 22.8i 19AR143 T09 C~8eYm 2015 01 21.49246 09 02 14.12 +01 31 30.8 22.8i 19AR143 T09 C~8eYm 2015 01 21.51438 09 02 14.00 +01 31 31.3 22.8i 19AR143 T09 C~8eYm 2015 01 27.31320 09 01 45.60 +01 33 53.7 23.0y 19AR143 T09 C~8eYm 2015 01 27.34202 09 01 45.45 +01 33 54.4 22.9y 19AR143 T09 C~8eYm 2015 01 27.38828 09 01 45.23 +01 33 55.7 23.0y 19AR143 T09 C~8eYm 2015 01 27.40562 09 01 45.14 +01 33 56.1 23.0y 19AR143 T09 C~8eYm 2015 01 27.45558 09 01 44.89 +01 33 57.4 23.0y 19AR143 T09 C~8eYm 2015 01 27.52154 09 01 44.56 +01 33 59.1 23.1y 19AR143 T09 C~8eYm 2015 01 27.53517 09 01 44.48 +01 33 59.6 22.7y 19AR143 T09 C~8eYm 2015 03 18.367624 08 58 03.14 +02 02 31.9 19AR143 T09 C~89Vd 2015 11 08.627105 09 11 55.83 +01 48 09.0 19AR143 T09 C~89Vd 2015 11 08.644172 09 11 55.85 +01 48 08.6 19AR143 T09 C~89Vd 2016 03 07.410658 09 05 24.88 +02 14 13.2 19AR143 T09 C~89Vd 2018 02 05.241642 09 21 18.42 +02 32 24.2 22.5z 19AR143 W84 C~89Vd 2018 11 15.55104 09 31 47.16 +02 38 20.8 22.7z 19AR143 T09 C~89Vd 2018 11 15.58818 09 31 47.19 +02 38 20.1 23.0z 19AR143 T09 C~89Vd 2018 11 15.61442 09 31 47.21 +02 38 19.9 22.8z 19AR143 T09 C~89Vd 2019 01 06.45393 09 30 18.64 +02 38 21.7 24.2g 19AR143 T09 C~89Vd 2019 01 06.47073 09 30 18.58 +02 38 21.9 24.1g 19AR143 T09 C~89Vd 2019 01 06.56149 09 30 18.21 +02 38 23.6 23.7g 19AR143 T09 C~89Vd 2019 01 06.58489 09 30 18.12 +02 38 23.9 23.2g 19AR143 T09 C~89Vd 2019 01 06.59550 09 30 18.09 +02 38 23.7 23.3g 19AR143 T09 C~89Vd 2019 01 06.61492 09 30 18.01 +02 38 24.4 23.7g 19AR143 T09 C~89Vd 2019 01 06.61703 09 30 17.99 +02 38 24.2 23.9g 19AR143 T09 C~89Vd 2019 01 08.505185 09 30 10.63 +02 38 55.1 19AR143 T09 C~89Vd 2019 03 08.291798 09 25 38.22 +03 08 04.9 19AR143 T09 C~89Vd 2019 03 08.334003 09 25 38.04 +03 08 06.5 19AR143 T09 C~89Vd 2024 12 31.419550 10 10 27.759 +04 18 36.89 23.1G 19AR143 G37 C~8cS6 2024 12 31.471850 10 10 27.605 +04 18 37.70 19AR143 G37 C~8cS6 2024 12 31.524310 10 10 27.468 +04 18 38.97 19AR143 G37 C~8cS6
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 -0.01
2 0.0467 0.00 -0.01 0.00 -0.06
3 0.0470 0.00 0.04 0.00 0.00
4 0.0470 0.00 -0.07 0.00 -0.02
5 0.0470 0.00 -0.15 0.00 0.01
6 0.0470 0.00 0.04 0.00 0.08
7 0.0471 0.00 0.09 0.00 0.03
8 0.0605 0.00 0.08 0.00 0.20
9 0.0606 0.00 -0.10 0.00 0.06
10 0.0607 0.00 0.07 0.00 -0.02
11 0.0607 0.00 -0.11 0.00 -0.02
12 0.0766 0.00 -0.06 0.00 -0.04
13 0.0767 0.00 -0.15 0.00 -0.09
14 0.0768 0.00 0.04 0.00 0.00
15 0.0768 0.00 -0.00 0.00 -0.05
16 0.0770 0.00 0.02 0.00 -0.05
17 0.0772 0.00 0.06 0.00 -0.07
18 0.0772 0.00 -0.11 0.00 0.07
19 0.2136 0.00 0.00 0.00 0.04
20 0.8577 0.00 0.04 0.00 -0.01
21 0.8578 0.00 0.11 0.00 -0.07
22 1.1857 0.00 0.05 0.00 0.05
23 3.1017 0.00 0.06 0.00 -0.28
24 3.8774 0.00 -0.04 0.00 0.13
25 3.8775 0.00 0.03 0.00 -0.02
26 3.8776 0.00 0.06 0.00 0.17
27 4.0195 0.00 -0.02 0.00 0.00
28 4.0195 0.00 0.07 0.00 -0.06
29 4.0198 0.00 -0.12 0.00 0.21
30 4.0198 0.00 -0.09 0.00 0.14
31 4.0199 0.00 0.09 0.00 -0.22
32 4.0199 0.00 0.03 0.00 0.17
33 4.0199 0.00 -0.14 0.00 -0.06
34 4.0251 0.00 0.01 0.00 0.04
35 4.1861 0.00 0.00 0.00 -0.07
36 4.1862 0.00 0.02 0.00 -0.05
37 10.0043 0.00 0.10 0.00 -0.21
38 10.0045 0.00 -0.08 0.00 -0.17
39 10.0046 0.00 0.00 0.00 0.33
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.
19AR143 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 52.329 52.329 52.329 ecceobj 0.259 0.259 0.259 incobj 30.534 30.534 30.534 qmin 37.576 37.597 37.601 qmax 67.295 67.301 67.333 amean 52.134 52.134 52.135 amin 51.639 51.643 51.635 amax 52.723 52.717 52.735 emean 0.260 0.260 0.260 emin 0.243 0.243 0.243 emax 0.277 0.277 0.277 imean 29.586 29.586 29.586 imin 29.218 29.218 29.208 imax 30.033 30.033 30.038 excite_mean 0.558 0.558 0.558 fracstop 1.000 1.000 1.000 cjmean 2.788 2.788 2.788 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 158.7 158.8 158.8 kozaiamp 180.0 180.0 180.0