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: 15UO105 # Created Sun Nov 24 02:10:28 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 3.13y # First observation: 2015/10/17 # Last observation: 2018/12/03 Preliminary a, adot, b, bdot, g, gdot: 0.000182 0.022765 -0.000127 -0.020354 0.027205 0.000000 # Chi-squared of fit: 7.55 DOF: 20 RMS: 0.13 # Min/Max residuals: -0.26 0.36 # Exact a, adot, b, bdot, g, gdot: 1.392091E-05 2.321451E-02 -1.321175E-05 -2.072386E-02 2.715933E-02 3.828342E-03 # Covariance matrix: 3.4883E-13 -1.6776E-13 -4.8414E-14 4.0626E-14 2.0187E-13 -1.3086E-12 -1.6776E-13 6.2518E-13 1.1169E-13 -5.0278E-13 5.8014E-13 8.4628E-12 -4.8414E-14 1.1169E-13 3.1801E-13 -2.3405E-13 -1.0767E-14 2.1528E-12 4.0626E-14 -5.0278E-13 -2.3405E-13 5.8492E-13 -5.5463E-13 -8.1377E-12 2.0187E-13 5.8014E-13 -1.0767E-14 -5.5463E-13 1.4860E-12 7.2107E-12 -1.3086E-12 8.4628E-12 2.1528E-12 -8.1377E-12 7.2107E-12 1.4245E-10 # lat0 lon0 xBary yBary zBary JD0 -35.741540 6.679065 -0.286025 -0.559846 -0.778275 2457312.742649 # Heliocentric elements and errors Epoch: 2457310.5000 = 2015/10/15 Mean Anomaly: 16.55365 +/- 0.040 Argument of Peri: 195.67170 +/- 0.082 Long of Asc Node: 154.46815 +/- 0.001 Inclination: 52.20407 +/- 0.000 Eccentricity: 0.28918098 +/- 0.0003 Semi-Major Axis: 51.23347720 +/- 0.0131 Time of Perihelion: 2451151.3548 +/- 14.6 Perihelion: 36.41772981 +/- 0.0167 Aphelion: 66.04922459 +/- 0.0219 Period (y) 366.7237 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.59727498 +/- 0.0013 Ecliptic Y 3.87105197 +/- 0.0002 Ecliptic Z -21.50796853 +/- 0.0010 Ecliptic XDOT -0.00117469 +/- 0.0000 Ecliptic YDOT 0.00221222 +/- 0.0000 Ecliptic ZDOT -0.00192103 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.60014614 +/- 0.0012 Geocenter to KBO 36.81976550 +/- 0.0017 # Hcoef: 7.99
The following table shows the complete astrometric record for 15UO105. 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 (15UO105) followed by the observatory code and reference code for the source of the astrometry.
2015 10 17.24186 01 26 20.874 -29 53 33.77 23.5r 15UO105 W84 C~55XC 2015 11 06.23187 01 24 31.963 -30 00 15.38 24.0r 15UO105 W84 C~55XC 2015 11 07.26667 01 24 26.654 -30 00 23.97 24.3g 15UO105 W84 C~55XC 2015 11 16.11771 01 23 43.526 -30 00 42.64 24.2r 15UO105 W84 C~55XC 2016 09 30.37705 01 35 46.322 -30 08 53.43 23.4i 15UO105 W84 C~55XC 2016 10 29.28465 01 33 06.381 -30 25 06.32 23.4r 15UO105 W84 C~55XC 2016 12 02.07985 01 30 28.254 -30 23 55.64 23.2i 15UO105 W84 C~55XC 2016 12 20.14308 01 29 40.861 -30 14 41.39 23.7r 15UO105 W84 C~55XC 2016 12 20.14445 01 29 40.855 -30 14 41.38 24.2g 15UO105 W84 C~55XC 2017 11 26.22703 01 38 44.371 -30 50 28.91 24.2r 15UO105 W84 C~55XC 2018 02 04.03275 01 38 01.479 -29 58 41.27 22.9z 15UO105 W84 C~55XC 2018 12 03.07175 01 46 10.864 -31 11 16.22 24.4r 15UO105 W84 C~55XC 2018 12 03.07313 01 46 10.871 -31 11 15.94 24.6g 15UO105 W84 C~55XC
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 0.24
2 0.0547 -1443.61 -0.02 284.73 0.08
3 0.0576 -1509.01 -0.15 308.25 -0.26
4 0.0818 -2017.38 0.10 544.42 -0.06
5 0.9559 6077.31 -0.03 -4229.60 -0.19
6 1.0350 3789.76 0.00 -4110.39 0.03
7 1.1276 2012.33 0.36 -3093.38 0.10
8 1.1770 1724.90 0.04 -2317.83 0.02
9 1.1770 1724.84 -0.03 -2317.79 0.00
10 2.1108 6912.66 0.01 -7525.23 -0.00
11 2.3020 7914.41 -0.23 -4527.53 0.14
12 3.1289 11335.29 -0.12 -11427.37 -0.12
13 3.1289 11335.51 0.15 -11427.17 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.
15UO105 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.796 51.840 51.752 ecceobj 0.297 0.298 0.296 incobj 52.076 52.077 52.076 qmin 34.572 34.447 34.615 qmax 69.019 69.290 68.792 amean 51.443 51.488 51.362 amin 50.957 50.997 50.898 amax 52.072 52.122 51.965 emean 0.308 0.310 0.306 emin 0.286 0.287 0.286 emax 0.326 0.330 0.324 imean 50.823 50.804 50.830 imin 50.477 50.441 50.500 imax 51.267 51.265 51.253 excite_mean 0.834 0.835 0.834 fracstop 1.000 1.000 1.000 cjmean 2.157 2.156 2.157 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 264.0 265.7 264.1 kozaiamp 70.0 72.2 69.8