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: 19RO4 # Created Fri Nov 22 02:11:01 2024 # Orbit generated from Bernstein formalism # Fitting 16 observations of 17 # Arc: 4.83y # First observation: 2019/09/04 # Last observation: 2024/07/03 Preliminary a, adot, b, bdot, g, gdot: 0.000163 0.022063 -0.000037 -0.007978 0.024793 0.000000 # Chi-squared of fit: 10.40 DOF: 26 RMS: 0.14 # Min/Max residuals: -0.26 0.36 # Exact a, adot, b, bdot, g, gdot: 1.276479E-05 2.258819E-02 -5.561520E-06 -8.125036E-03 2.477907E-02 4.089052E-03 # Covariance matrix: 2.2309E-13 -2.6008E-13 -1.7040E-14 5.1463E-14 1.5951E-13 -1.3595E-12 -2.6008E-13 6.9447E-13 5.3195E-14 -1.6166E-13 -4.1151E-13 4.2682E-12 -1.7040E-14 5.3195E-14 1.5444E-13 -5.4815E-14 -2.0254E-14 3.6654E-13 5.1463E-14 -1.6166E-13 -5.4815E-14 7.2402E-14 5.3328E-14 -1.1302E-12 1.5951E-13 -4.1151E-13 -2.0254E-14 5.3328E-14 8.6843E-13 -1.4261E-12 -1.3595E-12 4.2682E-12 3.6654E-13 -1.1302E-12 -1.4261E-12 2.9804E-11 # lat0 lon0 xBary yBary zBary JD0 -1.311444 -39.948936 -0.366536 -0.021423 -0.934032 2458730.694311 # Heliocentric elements and errors Epoch: 2458730.5000 = 2019/09/04 Mean Anomaly: 74.91403 +/- 0.055 Argument of Peri: 88.37094 +/- 0.055 Long of Asc Node: 136.99285 +/- 0.000 Inclination: 19.80575 +/- 0.000 Eccentricity: 0.17837752 +/- 0.0002 Semi-Major Axis: 41.93859498 +/- 0.0105 Time of Perihelion: 2438087.1630 +/- 12.9 Perihelion: 34.45769233 +/- 0.0128 Aphelion: 49.41949764 +/- 0.0155 Period (y) 271.5995 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.88469125 +/- 0.0012 Ecliptic Y -26.23250674 +/- 0.0010 Ecliptic Z -0.92382279 +/- 0.0000 Ecliptic XDOT 0.00194154 +/- 0.0000 Ecliptic YDOT 0.00163711 +/- 0.0000 Ecliptic ZDOT -0.00090807 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.29929048 +/- 0.0011 Geocenter to KBO 40.35663828 +/- 0.0015 # Hcoef: 7.00
The following table shows the complete astrometric record for 19RO4. 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 (19RO4) followed by the observatory code and reference code for the source of the astrometry.
2019 09 04.193510 21 31 33.430 -16 02 32.09 22.7G 19RO4 G37 C~3JLq 2019 09 04.265730 21 31 33.074 -16 02 34.14 19RO4 G37 C~3JLq 2019 09 04.321210 21 31 32.835 -16 02 35.58 19RO4 G37 C~3JLq 2019 09 07.216320 21 31 20.280 -16 03 47.61 22.8G 19RO4 G37 C~3JLq 2019 09 07.260390 21 31 20.107 -16 03 48.78 19RO4 G37 C~3JLq 2019 09 07.300310 21 31 19.935 -16 03 49.83 19RO4 G37 C~3JLq 2019 10 26.083200 21 29 06.746 -16 17 05.51 23.0G 19RO4 G37 C~3Qz5 2019 10 26.150510 21 29 06.730 -16 17 05.50 19RO4 G37 C~3Qz5 2019 10 26.218710 21 29 06.619 -16 17 06.44 19RO4 G37 C~3Qz5 2020 09 21.121660 21 36 04.790 -16 10 52.97 23.3G 19RO4 G37 C~4Ae6 2020 09 21.170420 21 36 04.621 -16 10 54.01 19RO4 G37 C~4Ae6 2021 07 09.323940 21 47 05.242 -15 39 01.71 23.2G 19RO4 G37 C~4v6H 2021 07 09.370510 21 47 05.036 -15 39 02.64 19RO4 G37 C~4v6H 2021 07 09.415640 21 47 04.901 -15 39 03.85 19RO4 G37 C~4v6H 2024 07 03.353100 22 03 57.201 -15 35 25.07 23.0G 19RO4 G37 C~8922 2024 07 03.393680 22 03 57.073 -15 35 25.98 19RO4 G37 C~8922 2024 07 03.430690 22 03 56.976 -15 35 26.76 19RO4 G37 C~8922
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 0.34 0.00 0.08
2 0.0002 -5.52 -0.18 -0.32 0.02
3 0.0003 -9.24 -0.08 -0.59 -0.07
4 0.0083 -203.72 -0.19 -11.50 0.04
5 0.0084 -206.46 0.04 -11.82 -0.13
6 0.0085 -209.14 0.04 -12.03 -0.21
7 0.1421 -2281.07 0.08 -161.13 -0.02
8 0.1423 -2281.29 ( 0.74) -161.05 ( 0.21)
9 0.1424 -2283.10 -0.20 -161.44 -0.04
10 1.0484 3545.24 0.03 -1725.71 0.07
11 1.0485 3542.60 0.15 -1725.91 -0.00
12 1.8457 13189.59 0.19 -3055.78 -0.05
13 1.8458 13186.46 -0.26 -3055.66 0.36
14 1.8459 13184.21 0.08 -3056.15 0.14
15 4.8300 27137.92 0.01 -7931.18 -0.15
16 4.8301 27135.83 -0.12 -7931.37 -0.04
17 4.8302 27134.21 0.06 -7931.61 0.00
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.
19RO4 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 41.602 41.657 41.548 ecceobj 0.174 0.177 0.172 incobj 19.836 19.836 19.836 qmin 33.871 33.816 33.983 qmax 49.889 49.990 49.594 amean 41.727 41.745 41.690 amin 41.354 41.375 41.322 amax 42.137 42.214 42.089 emean 0.165 0.166 0.158 emin 0.146 0.148 0.139 emax 0.186 0.188 0.181 imean 19.018 19.034 19.061 imin 18.096 18.113 18.159 imax 19.976 19.997 20.012 excite_mean 0.365 0.366 0.363 fracstop 1.000 1.000 1.000 cjmean 2.917 2.917 2.919 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 179.2 179.4 179.9 kozaiamp 180.0 179.9 180.0