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: 19JW147 # Created Tue Jan 21 02:11:21 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 15 # Arc: 4.90y # First observation: 2015/02/23 # Last observation: 2020/01/19 Preliminary a, adot, b, bdot, g, gdot: -0.000010 0.017120 0.000001 -0.001092 0.020867 0.000000 # Chi-squared of fit: 4.52 DOF: 20 RMS: 0.10 # Min/Max residuals: -0.20 0.24 # Exact a, adot, b, bdot, g, gdot: 1.316642E-05 1.724149E-02 -8.506391E-07 -1.095811E-03 2.069272E-02 6.889907E-04 # Covariance matrix: 1.4677E-12 -6.3047E-13 -2.8539E-15 1.8581E-14 -3.4253E-13 -3.8509E-12 -6.3047E-13 1.6272E-12 1.4763E-14 -9.7572E-14 1.8538E-12 2.0038E-11 -2.8539E-15 1.4763E-14 1.4109E-12 -3.3694E-13 1.7216E-14 1.9300E-13 1.8581E-14 -9.7572E-14 -3.3694E-13 9.3320E-14 -1.1879E-13 -1.2673E-12 -3.4253E-13 1.8538E-12 1.7216E-14 -1.1879E-13 2.4440E-12 2.3769E-11 -3.8509E-12 2.0038E-11 1.9300E-13 -1.2673E-12 2.3769E-11 2.6129E-10 # lat0 lon0 xBary yBary zBary JD0 -6.559669 154.372191 0.004001 -0.112535 -0.979978 2457076.853936 # Heliocentric elements and errors Epoch: 2457070.5000 = 2015/02/17 Mean Anomaly: 159.85531 +/- 0.337 Argument of Peri: 76.39628 +/- 0.339 Long of Asc Node: 273.88648 +/- 0.007 Inclination: 7.37731 +/- 0.000 Eccentricity: 0.12911632 +/- 0.0003 Semi-Major Axis: 43.91249540 +/- 0.0046 Time of Perihelion: 2409874.5031 +/- 99.1 Perihelion: 38.24267552 +/- 0.0131 Aphelion: 49.58231529 +/- 0.0135 Period (y) 290.9983 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -44.17768816 +/- 0.0033 Ecliptic Y 21.19560968 +/- 0.0016 Ecliptic Z -5.52073111 +/- 0.0004 Ecliptic XDOT -0.00105701 +/- 0.0000 Ecliptic YDOT -0.00203040 +/- 0.0000 Ecliptic ZDOT -0.00015436 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.30923314 +/- 0.0030 Geocenter to KBO 48.32617288 +/- 0.0037 # Hcoef: 7.80
The following table shows the complete astrometric record for 19JW147. 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 (19JW147) followed by the observatory code and reference code for the source of the astrometry.
2015 02 23.353158 10 15 25.27 +03 47 26.2 19JW147 T14 C~8ZqA 2019 01 11.428672 10 32 19.22 +01 56 06.5 19JW147 T09 C~8ZqA 2019 01 11.471600 10 32 19.12 +01 56 06.8 19JW147 T09 C~8ZqA 2019 04 07.29808 10 27 13.03 +02 24 39.2 25.1g 19JW147 T09 C~8Mhu 2019 04 07.35595 10 27 12.86 +02 24 40.2 25.1g 19JW147 T09 C~8Mhu 2019 04 07.38562 10 27 12.76 +02 24 41.0 25.1g 19JW147 T09 C~8Mhu 2019 04 07.38772 10 27 12.76 +02 24 41.0 25.3g 19JW147 T09 C~8Mhu 2019 05 08.33057 10 26 14.81 +02 33 50.8 23.8i 19JW147 T09 C~8Mhu 2019 05 08.35738 10 26 14.80 +02 33 51.3 24.3i 19JW147 T09 C~8Mhu 2019 05 08.38689 10 26 14.75 +02 33 51.7 24.7i 19JW147 T09 C~8Mhu 2019 05 08.38956 10 26 14.75 +02 33 51.7 25.2i 19JW147 T09 C~8Mhu 2019 05 31.28414 10 26 15.53 +02 36 53.4 24.7r 19JW147 T09 C~8Mhu 2019 05 31.32078 10 26 15.57 +02 36 54.1 25.2r 19JW147 T09 C~8Mhu 2019 05 31.33963 10 26 15.60 +02 36 54.1 24.8r 19JW147 T09 C~8Mhu 2020 01 19.425168 10 35 30.29 +01 32 36.0 19JW147 T09 C~8ZqA
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 0.00 0.00 0.00
2 3.8825 16612.79 -0.08 -741.44 -0.01
3 3.8826 16611.27 0.14 -741.71 0.02
4 4.1176 11691.25 -0.02 -808.28 0.23
5 4.1177 11688.50 0.05 -808.26 -0.04
6 4.1178 11686.81 -0.20 -808.06 0.03
7 4.1178 11686.81 -0.10 -808.06 0.02
8 4.2025 10675.27 0.11 -609.48 -0.15
9 4.2026 10674.95 0.24 -609.07 0.07
10 4.2027 10674.10 -0.11 -608.97 -0.04
11 4.2027 10674.10 -0.07 -608.97 -0.05
12 4.2654 10619.09 0.02 -435.12 -0.15
13 4.2655 10619.39 ( -0.07) -434.25 ( 0.45)
14 4.2655 10619.81 ( 0.15) -434.08 ( 0.47)
15 4.9037 19819.09 0.00 -1017.31 0.06
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.
19JW147 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.662 43.675 43.649 ecceobj 0.137 0.137 0.138 incobj 7.374 7.374 7.374 qmin 35.142 35.350 34.727 qmax 52.833 52.611 53.324 amean 43.727 43.727 43.727 amin 43.296 43.311 43.284 amax 44.194 44.226 44.217 emean 0.154 0.149 0.164 emin 0.104 0.094 0.113 emax 0.196 0.191 0.206 imean 7.886 8.303 7.131 imin 5.310 5.755 4.257 imax 10.305 10.927 9.824 excite_mean 0.208 0.211 0.209 fracstop 1.000 1.000 1.000 cjmean 3.045 3.044 3.045 libcent 0 181.5 169.9 183.0 libamp 0 109.6 121.7 109.7 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 91.1 89.8 99.4 kozaiamp 36.0 38.4 46.8