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: 19WA36 # Created Tue Apr 1 01:11:17 2025 # Orbit generated from Bernstein formalism # Fitting 35 observations of 35 # Arc: 68.11d # First observation: 2019/09/27 # Last observation: 2019/12/04 Preliminary a, adot, b, bdot, g, gdot: -0.000017 0.024688 0.000007 -0.005898 0.024274 0.000000 # Chi-squared of fit: 43.20 DOF: 64 RMS: 0.20 # Min/Max residuals: -0.40 0.63 # Exact a, adot, b, bdot, g, gdot: 1.587551E-05 2.135548E-02 -5.589172E-06 -5.797903E-03 2.377813E-02 3.059788E-03 # Covariance matrix: 1.4898E-13 -8.8205E-13 2.5662E-15 -7.6918E-14 2.7728E-13 7.9633E-11 -8.8205E-13 3.3073E-09 9.8586E-12 -1.0200E-10 5.0447E-10 -1.3565E-08 2.5662E-15 9.8586E-12 1.4810E-13 -1.0959E-12 1.5348E-12 -3.3129E-11 -7.6918E-14 -1.0200E-10 -1.0959E-12 1.1404E-11 -1.6360E-11 2.1239E-10 2.7728E-13 5.0447E-10 1.5348E-12 -1.6360E-11 7.9930E-11 -1.3174E-09 7.9633E-11 -1.3565E-08 -3.3129E-11 2.1239E-10 -1.3174E-09 2.6086E-07 # lat0 lon0 xBary yBary zBary JD0 -17.766473 31.409398 0.458515 -0.271202 -0.846353 2458753.849591 # Heliocentric elements and errors Epoch: 2458750.5000 = 2019/09/24 Mean Anomaly: 101.24902 +/- 4.241 Argument of Peri: 113.96947 +/- 3.685 Long of Asc Node: 163.37293 +/- 0.073 Inclination: 23.07140 +/- 0.024 Eccentricity: 0.13491759 +/- 0.0201 Semi-Major Axis: 41.13475947 +/- 0.2053 Time of Perihelion: 2431648.5721 +/- 1116.9 Perihelion: 35.58495679 +/- 0.8474 Aphelion: 46.68456214 +/- 0.8608 Period (y) 263.8285 +/- 1.97 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.18112377 +/- 0.0129 Ecliptic Y 20.93670806 +/- 0.0078 Ecliptic Z -12.83293450 +/- 0.0048 Ecliptic XDOT -0.00116048 +/- 0.0000 Ecliptic YDOT 0.00216818 +/- 0.0000 Ecliptic ZDOT -0.00074347 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.90386256 +/- 0.0113 Geocenter to KBO 42.05545743 +/- 0.0158 # Hcoef: 9.54
The following table shows the complete astrometric record for 19WA36. 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 (19WA36) followed by the observatory code and reference code for the source of the astrometry.
2019 09 27.34879 02 21 26.09 -04 44 05.3 26.3g 19WA36 T09 C~85Km 2019 09 27.43906 02 21 25.76 -04 44 08.2 25.3g 19WA36 T09 C~85Km 2019 09 27.53109 02 21 25.46 -04 44 11.9 25.5g 19WA36 T09 C~85Km 2019 09 27.53425 02 21 25.43 -04 44 12.2 25.9g 19WA36 T09 C~85Km 2019 09 29.45166 02 21 18.39 -04 45 20.0 26.0r 19WA36 T09 C~85Km 2019 09 29.45729 02 21 18.34 -04 45 20.0 26.4r 19WA36 T09 C~85Km 2019 09 29.46043 02 21 18.31 -04 45 20.5 26.3r 19WA36 T09 C~85Km 2019 09 29.49462 02 21 18.20 -04 45 21.5 25.8i 19WA36 T09 C~85Km 2019 09 29.49845 02 21 18.18 -04 45 21.5 26.2i 19WA36 T09 C~85Km 2019 09 29.51677 02 21 18.13 -04 45 21.9 25.5i 19WA36 T09 C~85Km 2019 09 29.53122 02 21 18.08 -04 45 22.6 26.1i 19WA36 T09 C~85Km 2019 11 01.36371 02 18 57.26 -05 02 08.1 25.7g 19WA36 T09 C~85Km 2019 11 01.44414 02 18 56.90 -05 02 10.1 26.3g 19WA36 T09 C~85Km 2019 11 01.58288 02 18 56.28 -05 02 13.8 25.5g 19WA36 T09 C~85Km 2019 11 02.26339 02 18 53.19 -05 02 29.7 25.1i 19WA36 T09 C~85Km 2019 11 02.26722 02 18 53.15 -05 02 30.0 25.9i 19WA36 T09 C~85Km 2019 11 02.28153 02 18 53.10 -05 02 30.3 25.5i 19WA36 T09 C~85Km 2019 11 02.28536 02 18 53.10 -05 02 30.7 25.2i 19WA36 T09 C~85Km 2019 11 02.29968 02 18 53.01 -05 02 30.7 25.2i 19WA36 T09 C~85Km 2019 11 02.30351 02 18 53.00 -05 02 31.2 25.1i 19WA36 T09 C~85Km 2019 11 02.31783 02 18 52.96 -05 02 31.2 25.8i 19WA36 T09 C~85Km 2019 11 02.32166 02 18 52.91 -05 02 31.0 25.5i 19WA36 T09 C~85Kn 2019 11 27.31047 02 17 05.13 -05 09 30.2 25.5i 19WA36 T09 C~85Kn 2019 11 27.32876 02 17 05.08 -05 09 30.4 25.7i 19WA36 T09 C~85Kn 2019 11 27.33643 02 17 05.04 -05 09 30.5 25.8i 19WA36 T09 C~85Kn 2019 11 29.32156 02 16 57.39 -05 09 47.3 25.8r 19WA36 T09 C~85Kn 2019 11 29.32540 02 16 57.37 -05 09 47.3 26.2r 19WA36 T09 C~85Kn 2019 11 29.33675 02 16 57.31 -05 09 47.3 25.9r 19WA36 T09 C~85Kn 2019 12 04.38500 02 16 38.70 -05 10 18.6 25.8i 19WA36 T09 C~85Kn 2019 12 04.39267 02 16 38.68 -05 10 18.6 25.5i 19WA36 T09 C~85Kn 2019 12 04.41091 02 16 38.62 -05 10 18.6 26.1i 19WA36 T09 C~85Kn 2019 12 04.41474 02 16 38.60 -05 10 18.6 25.8i 19WA36 T09 C~85Kn 2019 12 04.42904 02 16 38.57 -05 10 18.6 26.3i 19WA36 T09 C~85Kn 2019 12 04.45101 02 16 38.48 -05 10 18.8 26.2i 19WA36 T09 C~85Kn 2019 12 04.45483 02 16 38.45 -05 10 18.9 26.0i 19WA36 T09 C~85Kn
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 -0.35 0.00 0.36
2 0.0002 -5.63 -0.19 -1.05 0.63
3 0.0005 -11.10 0.25 -3.00 0.00
4 0.0005 -11.63 -0.07 -3.13 -0.08
5 0.0058 -133.67 0.32 -31.02 -0.35
6 0.0058 -134.37 -0.01 -30.77 -0.02
7 0.0058 -134.96 -0.40 -31.09 -0.29
8 0.0059 -136.85 -0.04 -31.47 -0.21
9 0.0059 -137.13 -0.07 -31.37 -0.05
10 0.0059 -137.97 0.30 -31.49 0.07
11 0.0060 -138.91 0.31 -31.89 -0.13
12 0.0959 -2460.16 -0.12 -261.45 0.25
13 0.0961 -2465.90 0.04 -261.50 0.14
14 0.0965 -2475.87 0.20 -261.83 -0.30
15 0.0983 -2524.70 0.09 -261.10 0.18
16 0.0983 -2525.36 -0.30 -261.18 0.10
17 0.0984 -2526.17 -0.06 -261.21 0.06
18 0.0984 -2526.31 0.08 -261.58 -0.32
19 0.0984 -2527.57 -0.14 -261.13 0.12
20 0.0984 -2527.88 -0.17 -261.55 -0.30
21 0.0985 -2528.44 0.31 -261.34 -0.11
22 0.0985 -2529.08 -0.05 -260.90 0.32
23 0.1669 -4186.51 -0.18 -108.61 0.07
24 0.1670 -4187.28 0.13 -108.54 -0.08
25 0.1670 -4187.88 -0.01 -108.44 -0.06
26 0.1724 -4301.14 0.24 -85.48 -0.10
27 0.1724 -4301.42 0.18 -85.38 -0.05
28 0.1725 -4302.26 -0.01 -85.08 0.12
29 0.1863 -4574.55 -0.23 -20.26 -0.01
30 0.1863 -4574.83 -0.11 -20.16 -0.02
31 0.1863 -4575.67 0.01 -19.85 0.03
32 0.1864 -4575.96 -0.08 -19.75 0.07
33 0.1864 -4576.38 0.25 -19.60 0.02
34 0.1865 -4577.71 0.06 -19.33 -0.02
35 0.1865 -4578.17 -0.19 -19.28 -0.02
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.
19WA36 quality flag:2 Type: SCATNEAR SCATEXTD SCATEXTD axisobj 41.469 42.215 40.897 ecceobj 0.131 0.172 0.102 incobj 23.040 23.045 23.051 qmin 32.889 34.125 35.941 qmax 49.935 50.190 45.702 amean 41.190 41.979 40.697 amin 40.775 41.601 40.342 amax 41.632 42.410 41.079 emean 0.155 0.165 0.096 emin 0.119 0.144 0.079 emax 0.200 0.185 0.114 imean 22.069 22.642 22.677 imin 21.012 21.966 22.075 imax 22.960 23.339 23.255 excite_mean 0.407 0.419 0.397 fracstop 1.000 1.000 1.000 cjmean 2.873 2.867 2.876 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 176.2 186.2 182.4 kozaiamp 180.0 180.0 180.0