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: 19PV99 # Created Wed May 21 01:11:19 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 23 observations of 23 # Arc: 8.06y # First observation: 2015/07/15 # Last observation: 2023/08/05 # Chi-squared of fit: 5.07 DOF: 40 RMS: 0.08 # Min/Max residuals: -0.19 0.21 # Exact a, adot, b, bdot, g, gdot: 1.600105E-05 2.506652E-02 -1.813420E-06 -2.781697E-03 2.501651E-02 -2.245700E-03 # Covariance matrix: 7.1857E-13 -2.7615E-13 -3.8808E-14 2.4576E-14 -2.0775E-13 -9.0412E-13 -2.7615E-13 1.8537E-13 3.0688E-14 -2.0376E-14 2.9081E-13 7.4143E-13 -3.8808E-14 3.0688E-14 4.0306E-13 -6.2108E-14 4.8854E-14 1.2965E-13 2.4576E-14 -2.0376E-14 -6.2108E-14 1.2567E-14 -3.6054E-14 -8.6484E-14 -2.0775E-13 2.9081E-13 4.8854E-14 -3.6054E-14 9.4840E-13 1.2819E-12 -9.0412E-13 7.4143E-13 1.2965E-13 -8.6484E-14 1.2819E-12 3.1436E-12 # lat0 lon0 xBary yBary zBary JD0 -8.803695 -69.720877 -0.038555 -0.155502 -1.004904 2457218.763726 # Heliocentric elements and errors Epoch: 2457218.5000 = 2015/07/15 Mean Anomaly: 309.58226 +/- 0.032 Argument of Peri: 294.48460 +/- 0.038 Long of Asc Node: 56.80188 +/- 0.001 Inclination: 10.63443 +/- 0.000 Eccentricity: 0.10502940 +/- 0.0001 Semi-Major Axis: 43.57902388 +/- 0.0067 Time of Perihelion: 2471934.6945 +/- 22.8 Perihelion: 39.00194515 +/- 0.0076 Aphelion: 48.15610261 +/- 0.0088 Period (y) 287.6898 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 14.07711767 +/- 0.0005 Ecliptic Y -37.99462443 +/- 0.0014 Ecliptic Z -6.11799127 +/- 0.0002 Ecliptic XDOT 0.00247067 +/- 0.0000 Ecliptic YDOT 0.00121606 +/- 0.0000 Ecliptic ZDOT -0.00026317 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.97793383 +/- 0.0013 Geocenter to KBO 39.97370261 +/- 0.0016 # Hcoef: 7.21
The following table shows the complete astrometric record for 19PV99. 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 (19PV99) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.262937 19 33 48.067 -30 36 24.91 23.0r 19PV99 W84 C~8r9E 2015 07 15.328501 19 33 47.702 -30 36 25.85 23.3r 19PV99 W84 C~8r9E 2019 08 06.03649 19 58 46.71 -30 13 26.77 19PV99 W84 C~8r9E 2019 08 06.04377 19 58 46.66 -30 13 26.8 23.0r 19PV99 W84 C~8r9E 2019 08 06.05105 19 58 46.63 -30 13 26.95 19PV99 W84 C~8r9E 2019 08 06.05833 19 58 46.57 -30 13 27.0 19PV99 W84 C~8r9E 2019 08 06.99897 19 58 41.60 -30 13 36.96 19PV99 W84 C~8r9E 2019 08 07.00624 19 58 41.57 -30 13 37.1 19PV99 W84 C~8r9E 2019 08 07.02813 19 58 41.46 -30 13 37.32 19PV99 W84 C~8r9E 2019 08 07.03542 19 58 41.41 -30 13 37.5 19PV99 W84 C~8r9E 2021 08 30.15163 20 10 20.74 -29 55 45.0 23.3V 19PV99 W84 C~8r9E 2021 08 31.09725 20 10 16.80 -29 55 48.5 23.3V 19PV99 W84 C~8r9E 2021 08 31.13469 20 10 16.65 -29 55 48.6 23.3V 19PV99 W84 C~8r9E 2023 06 12.20577 20 30 24.34 -29 06 12.6 23.8V 19PV99 W84 C~8r9E 2023 06 12.28540 20 30 24.04 -29 06 14.5 23.7V 19PV99 W84 C~8r9E 2023 06 12.33999 20 30 23.86 -29 06 15.8 23.3V 19PV99 W84 C~8r9E 2023 06 12.40760 20 30 23.60 -29 06 17.4 23.4V 19PV99 W84 C~8r9E 2023 08 04.99323 20 26 00.01 -29 25 25.1 23.1V 19PV99 W84 C~8r9E 2023 08 04.99842 20 25 59.98 -29 25 25.2 23.5V 19PV99 W84 C~8r9E 2023 08 05.03810 20 25 59.76 -29 25 25.9 22.9V 19PV99 W84 C~8r9E 2023 08 05.08643 20 25 59.49 -29 25 26.8 23.2V 19PV99 W84 C~8r9E 2023 08 05.11225 20 25 59.35 -29 25 27.2 23.5V 19PV99 W84 C~8r9E 2023 08 05.16236 20 25 59.08 -29 25 27.9 23.5V 19PV99 W84 C~8r9E
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 -0.04 0.00 0.01
2 0.0002 0.00 0.05 0.00 -0.12
3 4.0596 0.00 0.21 0.00 -0.03
4 4.0596 0.00 0.04 0.00 0.02
5 4.0597 0.00 0.18 0.00 -0.04
6 4.0597 0.00 -0.13 0.00 -0.01
7 4.0622 0.00 -0.19 0.00 0.11
8 4.0623 0.00 -0.06 0.00 0.05
9 4.0623 0.00 0.04 0.00 0.07
10 4.0623 0.00 -0.13 0.00 -0.03
11 6.1270 0.00 -0.03 0.00 0.04
12 6.1296 0.00 -0.11 0.00 0.03
13 6.1297 0.00 0.01 0.00 0.05
14 7.9095 0.00 0.06 0.00 0.02
15 7.9097 0.00 -0.13 0.00 0.00
16 7.9099 0.00 0.13 0.00 -0.02
17 7.9100 0.00 -0.09 0.00 -0.04
18 8.0568 0.00 0.06 0.00 0.07
19 8.0568 0.00 0.04 0.00 0.05
20 8.0569 0.00 -0.00 0.00 -0.00
21 8.0570 0.00 -0.07 0.00 -0.12
22 8.0571 0.00 -0.03 0.00 -0.11
23 8.0572 0.00 0.07 0.00 -0.01
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.
19PV99 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.585 43.585 43.585 ecceobj 0.110 0.110 0.110 incobj 10.665 10.665 10.665 qmin 38.461 38.461 38.461 qmax 49.311 49.314 49.307 amean 43.727 43.726 43.726 amin 43.328 43.324 43.312 amax 44.167 44.168 44.174 emean 0.101 0.096 0.099 emin 0.080 0.073 0.080 emax 0.117 0.117 0.117 imean 9.139 9.153 9.174 imin 8.301 8.286 8.389 imax 9.802 9.819 9.802 excite_mean 0.188 0.186 0.188 fracstop 1.000 1.000 1.000 cjmean 3.055 3.056 3.056 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 181.3 182.7 181.1 kozaiamp 180.0 180.0 180.0