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: 19UW173 # Created Tue May 7 01:17:40 2024 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 83.92d # First observation: 2019/09/29 # Last observation: 2019/12/22 Preliminary a, adot, b, bdot, g, gdot: -0.000068 0.034058 0.000056 0.006111 0.027870 0.000000 # Chi-squared of fit: 28.54 DOF: 64 RMS: 0.16 # Min/Max residuals: -0.49 0.41 # Exact a, adot, b, bdot, g, gdot: 1.592319E-05 2.805953E-02 4.885219E-06 6.691061E-03 2.701453E-02 3.182777E-03 # Covariance matrix: 3.3326E-13 -2.9473E-12 -1.7376E-14 3.7990E-13 4.1924E-13 1.4375E-10 -2.9473E-12 1.4405E-09 1.3354E-11 -1.3981E-10 2.0923E-10 -8.3552E-09 -1.7376E-14 1.3354E-11 2.8620E-13 -2.3597E-12 1.9535E-12 -7.7744E-11 3.7990E-13 -1.3981E-10 -2.3597E-12 2.3200E-11 -1.9638E-11 9.6925E-10 4.1924E-13 2.0923E-10 1.9535E-12 -1.9638E-11 3.3452E-11 -6.7567E-10 1.4375E-10 -8.3552E-09 -7.7744E-11 9.6925E-10 -6.7567E-10 1.5287E-07 # lat0 lon0 xBary yBary zBary JD0 -17.262742 32.979830 0.450729 -0.264810 -0.852151 2458755.943631 # Heliocentric elements and errors Epoch: 2458750.5000 = 2019/09/24 Mean Anomaly: 38.12952 +/- 2.602 Argument of Peri: 256.84336 +/- 4.028 Long of Asc Node: 83.30227 +/- 0.048 Inclination: 21.29285 +/- 0.013 Eccentricity: 0.14635101 +/- 0.0108 Semi-Major Axis: 42.32995874 +/- 0.1192 Time of Perihelion: 2448096.1001 +/- 725.8 Perihelion: 36.13492651 +/- 0.4664 Aphelion: 48.52499097 +/- 0.4752 Period (y) 275.4102 +/- 1.16 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.65012396 +/- 0.0063 Ecliptic Y 19.34294893 +/- 0.0041 Ecliptic Z -10.98480324 +/- 0.0024 Ecliptic XDOT -0.00111228 +/- 0.0000 Ecliptic YDOT 0.00266367 +/- 0.0000 Ecliptic ZDOT 0.00055162 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.87143612 +/- 0.0056 Geocenter to KBO 37.01711756 +/- 0.0079 # Hcoef: 9.65
The following table shows the complete astrometric record for 19UW173. 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 (19UW173) followed by the observatory code and reference code for the source of the astrometry.
2019 09 29.44283 02 26 24.44 -03 45 18.5 25.6r 19UW173 T09 C~7ulL 2019 09 29.46532 02 26 24.34 -03 45 19.0 25.8r 19UW173 T09 C~7ulL 2019 09 29.54579 02 26 23.97 -03 45 21.7 25.9i 19UW173 T09 C~7ulL 2019 09 29.60928 02 26 23.71 -03 45 23.2 25.1z 19UW173 T09 C~7ulL 2019 10 23.53309 02 24 29.84 -03 56 49.2 24.3z 19UW173 T09 C~7ulL 2019 10 23.55512 02 24 29.73 -03 56 49.7 24.4z 19UW173 T09 C~7ulL 2019 10 23.55861 02 24 29.71 -03 56 50.2 24.6z 19UW173 T09 C~7ulL 2019 10 27.29097 02 24 10.46 -03 58 18.3 25.7r 19UW173 T09 C~7ulL 2019 10 27.30213 02 24 10.39 -03 58 18.7 25.3r 19UW173 T09 C~7ulL 2019 10 27.31332 02 24 10.33 -03 58 18.9 25.6r 19UW173 T09 C~7ulL 2019 10 27.31576 02 24 10.32 -03 58 19.2 25.5r 19UW173 T09 C~7ulL 2019 10 27.42875 02 24 09.73 -03 58 21.4 24.9i 19UW173 T09 C~7ulL 2019 10 27.44703 02 24 09.62 -03 58 21.9 24.8i 19UW173 T09 C~7ulL 2019 10 31.49580 02 23 48.57 -03 59 49.9 25.2z 19UW173 T09 C~7ulL 2019 10 31.53991 02 23 48.32 -03 59 50.9 25.7z 19UW173 T09 C~7ulL 2019 10 31.55809 02 23 48.24 -03 59 51.2 25.1z 19UW173 T09 C~7ulL 2019 11 01.35808 02 23 44.06 -04 00 07.8 25.8g 19UW173 T09 C~7ulL 2019 11 01.36928 02 23 44.03 -04 00 07.5 26.1g 19UW173 T09 C~7ulL 2019 11 01.44979 02 23 43.59 -04 00 09.4 26.3g 19UW173 T09 C~7ulL 2019 11 01.52871 02 23 43.18 -04 00 10.9 26.1g 19UW173 T09 C~7ulL 2019 11 01.57346 02 23 42.95 -04 00 11.7 26.1g 19UW173 T09 C~7ulL 2019 11 27.25481 02 21 35.18 -04 05 29.3 25.1z 19UW173 T09 C~7ulL 2019 11 27.32148 02 21 34.89 -04 05 29.5 24.9i 19UW173 T09 C~7ulL 2019 11 27.34361 02 21 34.76 -04 05 29.5 25.4i 19UW173 T09 C~7ulL 2019 11 27.36574 02 21 34.67 -04 05 29.6 25.0i 19UW173 T09 C~7ulL 2019 11 27.45540 02 21 34.27 -04 05 30.1 25.5r 19UW173 T09 C~7ulL 2019 12 04.32949 02 21 04.44 -04 05 39.0 25.0z 19UW173 T09 C~7ulL 2019 12 04.35162 02 21 04.36 -04 05 38.8 25.5z 19UW173 T09 C~7ulL 2019 12 04.39987 02 21 04.15 -04 05 38.3 24.8i 19UW173 T09 C~7ulL 2019 12 04.42190 02 21 04.07 -04 05 38.3 25.1i 19UW173 T09 C~7ulL 2019 12 04.44386 02 21 03.97 -04 05 38.2 25.3i 19UW173 T09 C~7ulL 2019 12 22.27977 02 20 01.65 -04 03 18.2 25.9r 19UW173 T09 C~7ulL 2019 12 22.29498 02 20 01.61 -04 03 18.1 25.6r 19UW173 T09 C~7ulL 2019 12 22.30453 02 20 01.57 -04 03 17.7 25.4r 19UW173 T09 C~7ulL 2019 12 22.36184 02 20 01.43 -04 03 17.2 24.9i 19UW173 T09 C~7ulL
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 0.10 0.00 -0.20
2 0.0001 -1.58 0.13 0.03 0.02
3 0.0003 -7.70 -0.25 -0.66 -0.01
4 0.0005 -11.87 0.10 -0.78 0.41
5 0.0660 -1847.38 0.10 -77.92 0.11
6 0.0660 -1849.10 0.18 -77.84 0.12
7 0.0660 -1849.55 0.02 -78.21 -0.26
8 0.0762 -2150.52 0.15 -65.10 -0.01
9 0.0763 -2151.64 -0.06 -65.13 -0.09
10 0.0763 -2152.55 -0.06 -65.01 -0.03
11 0.0763 -2152.80 -0.10 -65.25 -0.28
12 0.0766 -2161.85 0.11 -64.37 0.05
13 0.0767 -2163.57 -0.11 -64.30 0.04
14 0.0878 -2489.91 0.05 -42.13 -0.06
15 0.0879 -2493.77 -0.22 -41.83 -0.06
16 0.0879 -2495.00 0.03 -41.71 -0.07
17 0.0901 -2559.51 -0.49 -36.49 -0.15
18 0.0901 -2559.83 0.10 -36.05 0.20
19 0.0904 -2566.68 -0.18 -35.65 0.01
20 0.0906 -2572.96 -0.04 -35.02 0.06
21 0.0907 -2576.47 0.08 -34.62 0.12
22 0.1610 -4485.34 -0.03 303.29 -0.00
23 0.1612 -4489.50 0.25 304.55 -0.04
24 0.1613 -4491.34 -0.11 305.19 0.18
25 0.1613 -4492.64 0.06 305.55 0.10
26 0.1616 -4498.45 0.20 307.07 -0.13
27 0.1804 -4922.48 -0.23 447.33 -0.35
28 0.1804 -4923.55 0.02 447.92 -0.26
29 0.1806 -4926.35 0.08 449.43 0.18
30 0.1806 -4927.47 0.25 449.83 0.09
31 0.1807 -4928.85 0.16 450.43 0.20
32 0.2295 -5762.15 -0.10 892.91 0.08
33 0.2296 -5762.69 -0.08 893.20 -0.05
34 0.2296 -5763.12 -0.17 893.78 0.26
35 0.2298 -5764.93 0.07 894.95 -0.17
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.
19UW173 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.705 43.271 42.242 ecceobj 0.151 0.181 0.128 incobj 21.255 21.254 21.271 qmin 35.656 34.924 36.241 qmax 49.343 51.433 48.015 amean 42.328 42.982 41.966 amin 41.919 42.604 41.618 amax 42.742 43.416 42.336 emean 0.095 0.168 0.115 emin 0.024 0.150 0.098 emax 0.155 0.185 0.135 imean 20.386 19.723 19.638 imin 19.326 19.060 18.969 imax 21.365 20.444 20.312 excite_mean 0.363 0.377 0.355 fracstop 1.000 1.000 1.000 cjmean 2.923 2.919 2.927 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 268.5 180.6 178.2 kozaiamp 53.9 180.0 179.9