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: 19UF178 # Created Sun Dec 22 02:11:10 2024 # Orbit generated from Bernstein formalism # Fitting 26 observations of 26 # Arc: 62.02d # First observation: 2019/10/27 # Last observation: 2019/12/28 Preliminary a, adot, b, bdot, g, gdot: -0.000013 0.050702 0.000023 -0.012671 0.035544 0.000000 # Chi-squared of fit: 18.28 DOF: 46 RMS: 0.15 # Min/Max residuals: -0.34 0.40 # Exact a, adot, b, bdot, g, gdot: 1.967587E-05 4.185194E-02 -6.446911E-06 -1.117929E-02 3.429228E-02 5.841774E-03 # Covariance matrix: 1.6543E-13 -1.9402E-12 -5.0741E-15 8.1176E-14 3.4364E-13 1.2686E-10 -1.9402E-12 4.1783E-09 1.0740E-11 -6.8665E-10 5.5549E-10 -5.7406E-08 -5.0741E-15 1.0740E-11 1.5319E-13 -2.8062E-12 1.4013E-12 -1.5599E-10 8.1176E-14 -6.8665E-10 -2.8062E-12 1.2923E-10 -9.2420E-11 9.2765E-09 3.4364E-13 5.5549E-10 1.4013E-12 -9.2420E-11 7.9520E-11 -6.3321E-09 1.2686E-10 -5.7406E-08 -1.5599E-10 9.2765E-09 -6.3321E-09 1.1195E-06 # lat0 lon0 xBary yBary zBary JD0 -18.202143 33.521999 -0.004105 -0.310952 -0.945662 2458783.794201 # Heliocentric elements and errors Epoch: 2458780.5000 = 2019/10/24 Mean Anomaly: 21.20294 +/- 2.654 Argument of Peri: 193.58096 +/- 5.335 Long of Asc Node: 165.07279 +/- 0.044 Inclination: 22.98778 +/- 0.014 Eccentricity: 0.26999227 +/- 0.0161 Semi-Major Axis: 39.45794368 +/- 0.3082 Time of Perihelion: 2453448.4558 +/- 664.4 Perihelion: 28.80460389 +/- 0.6745 Aphelion: 50.11128346 +/- 0.7466 Period (y) 247.8620 +/- 2.90 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.92484070 +/- 0.0060 Ecliptic Y 15.84463551 +/- 0.0040 Ecliptic Z -9.10925152 +/- 0.0024 Ecliptic XDOT -0.00169989 +/- 0.0001 Ecliptic YDOT 0.00287762 +/- 0.0000 Ecliptic ZDOT -0.00099380 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 30.10695834 +/- 0.0053 Geocenter to KBO 29.16108293 +/- 0.0076 # Hcoef: 10.36
The following table shows the complete astrometric record for 19UF178. 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 (19UF178) followed by the observatory code and reference code for the source of the astrometry.
2019 10 27.29340 02 29 36.97 -04 28 06.7 25.5r 19UF178 T09 C~8Aja 2019 10 27.30457 02 29 36.91 -04 28 07.4 24.8r 19UF178 T09 C~8Aja 2019 10 27.31576 02 29 36.84 -04 28 07.7 25.2r 19UF178 T09 C~8Aja 2019 10 27.43225 02 29 36.12 -04 28 12.1 25.1i 19UF178 T09 C~8Aja 2019 10 27.46883 02 29 35.89 -04 28 13.4 25.7i 19UF178 T09 C~8Aja 2019 10 31.49932 02 29 11.19 -04 30 42.8 25.5z 19UF178 T09 C~8Aja 2019 10 31.52139 02 29 11.03 -04 30 43.8 25.2z 19UF178 T09 C~8Aja 2019 10 31.54341 02 29 10.91 -04 30 44.3 24.5z 19UF178 T09 C~8Aja 2019 11 01.44090 02 29 05.41 -04 31 16.1 25.5g 19UF178 T09 C~8Aja 2019 11 01.45227 02 29 05.33 -04 31 16.4 25.8g 19UF178 T09 C~8Aja 2019 11 01.53116 02 29 04.86 -04 31 19.3 25.3g 19UF178 T09 C~8Aja 2019 11 01.57590 02 29 04.57 -04 31 20.6 25.4g 19UF178 T09 C~8Aja 2019 11 27.25830 02 26 33.29 -04 41 56.5 24.5z 19UF178 T09 C~8Aja 2019 11 27.32500 02 26 32.93 -04 41 57.5 24.6i 19UF178 T09 C~8Aja 2019 11 27.34715 02 26 32.82 -04 41 57.7 24.8i 19UF178 T09 C~8Aja 2019 11 27.36927 02 26 32.68 -04 41 58.0 24.7i 19UF178 T09 C~8Aja 2019 12 04.28879 02 25 57.24 -04 43 09.6 24.0z 19UF178 T09 C~8Aja 2019 12 04.33301 02 25 56.99 -04 43 09.8 24.6z 19UF178 T09 C~8Aja 2019 12 04.35514 02 25 56.89 -04 43 09.8 24.4z 19UF178 T09 C~8Aja 2019 12 04.40339 02 25 56.65 -04 43 10.3 25.1i 19UF178 T09 C~8Aja 2019 12 04.42539 02 25 56.54 -04 43 10.5 24.7i 19UF178 T09 C~8Aja 2019 12 04.44735 02 25 56.44 -04 43 10.6 24.7i 19UF178 T09 C~8Aja 2019 12 28.22186 02 24 26.72 -04 41 27.8 26.2g 19UF178 T09 C~8Aja 2019 12 28.22821 02 24 26.71 -04 41 27.3 26.1g 19UF178 T09 C~8Aja 2019 12 28.28244 02 24 26.59 -04 41 26.3 26.5g 19UF178 T09 C~8Aja 2019 12 28.31763 02 24 26.46 -04 41 26.1 26.0g 19UF178 T09 C~8Aja
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 -0.08 0.00 0.27
2 0.0000 -1.08 -0.04 -0.36 -0.03
3 0.0001 -2.17 -0.01 -0.30 0.09
4 0.0004 -13.78 0.07 -0.86 0.15
5 0.0005 -17.46 0.07 -0.95 0.25
6 0.0115 -415.48 0.04 -19.01 -0.12
7 0.0116 -418.07 -0.34 -19.16 -0.22
8 0.0116 -419.93 -0.00 -19.03 -0.04
9 0.0141 -508.07 0.03 -21.68 -0.18
10 0.0141 -509.30 -0.07 -21.56 -0.04
11 0.0143 -516.89 0.22 -21.96 -0.30
12 0.0145 -521.41 0.14 -21.75 0.00
13 0.0848 -2866.27 -0.11 129.47 0.09
14 0.0850 -2871.68 -0.07 130.31 -0.02
15 0.0850 -2873.30 0.13 130.66 0.02
16 0.0851 -2875.37 -0.14 131.07 0.11
17 0.1040 -3399.08 0.23 239.18 -0.18
18 0.1041 -3402.67 -0.15 240.23 0.07
19 0.1042 -3404.08 0.05 240.73 0.17
20 0.1043 -3407.63 -0.00 241.44 0.01
21 0.1044 -3409.25 -0.03 241.80 -0.04
22 0.1045 -3410.69 0.12 242.20 -0.03
23 0.1696 -4642.72 -0.21 783.53 -0.25
24 0.1696 -4642.69 0.02 784.05 0.09
25 0.1697 -4644.06 0.40 785.59 0.13
26 0.1698 -4645.82 -0.24 786.42 -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.
19UF178 quality flag:1 Type: 3:2E 5:3EE CENTAURS axisobj 39.835 42.727 37.794 ecceobj 0.276 0.351 0.208 incobj 22.959 23.017 22.900 qmin 27.030 27.372 29.695 qmax 52.688 58.004 46.277 amean 39.454 42.325 37.701 amin 38.944 41.840 37.279 amax 40.100 42.926 38.163 emean 0.286 0.342 0.121 emin 0.260 0.330 0.081 emax 0.316 0.353 0.214 imean 21.412 22.438 24.540 imin 20.348 22.075 22.043 imax 22.299 22.786 25.936 excite_mean 0.464 0.513 0.433 fracstop 1.000 1.000 1.000 cjmean 2.805 2.771 2.821 libcent 0 179.8 174.4 -180.0 libamp 0 108.2 104.0 -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 195.5 181.5 189.0 kozaiamp 180.0 180.0 180.0