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: 15UN105 # Created Sat Apr 27 01:17:38 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 3.06y # First observation: 2014/11/04 # Last observation: 2017/11/24 Preliminary a, adot, b, bdot, g, gdot: 0.000193 0.029210 -0.000028 -0.007716 0.024910 0.000000 # Chi-squared of fit: 4.23 DOF: 12 RMS: 0.12 # Min/Max residuals: -0.23 0.26 # Exact a, adot, b, bdot, g, gdot: 1.928052E-05 2.957488E-02 -6.142821E-06 -7.777818E-03 2.401018E-02 4.136718E-03 # Covariance matrix: 1.2669E-12 -1.5272E-12 -1.6874E-13 3.1988E-13 -3.4732E-13 -1.3389E-11 -1.5272E-12 2.6316E-12 2.8841E-13 -5.9516E-13 -1.0216E-12 2.8388E-11 -1.6874E-13 2.8841E-13 6.3560E-13 -3.5067E-13 3.9309E-13 2.6731E-12 3.1988E-13 -5.9516E-13 -3.5067E-13 3.2499E-13 -1.3167E-13 -6.3884E-12 -3.4732E-13 -1.0216E-12 3.9309E-13 -1.3167E-13 2.1280E-11 -3.8568E-11 -1.3389E-11 2.8388E-11 2.6731E-12 -6.3884E-12 -3.8568E-11 3.6228E-10 # lat0 lon0 xBary yBary zBary JD0 -35.165551 14.170096 -0.453225 -0.508740 -0.722427 2456965.690158 # Heliocentric elements and errors Epoch: 2456960.5000 = 2014/10/30 Mean Anomaly: 1.50141 +/- 0.014 Argument of Peri: 231.50989 +/- 0.068 Long of Asc Node: 129.44698 +/- 0.001 Inclination: 37.04626 +/- 0.000 Eccentricity: 0.77494582 +/- 0.0012 Semi-Major Axis: 184.05038570 +/- 1.0303 Time of Perihelion: 2453156.8486 +/- 12.9 Perihelion: 41.42130884 +/- 0.3264 Aphelion: 326.67946255 +/- 1.8431 Period (y) 2496.9699 +/- 20.97 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.75454780 +/- 0.0063 Ecliptic Y 8.99255167 +/- 0.0016 Ecliptic Z -23.98762829 +/- 0.0046 Ecliptic XDOT -0.00095131 +/- 0.0000 Ecliptic YDOT 0.00323425 +/- 0.0000 Ecliptic ZDOT -0.00099660 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.37501379 +/- 0.0057 Geocenter to KBO 41.64900531 +/- 0.0080 # Hcoef: 7.27
The following table shows the complete astrometric record for 15UN105. 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 (15UN105) followed by the observatory code and reference code for the source of the astrometry.
2014 11 04.18938 01 50 01.293 -26 40 02.75 23.1z 15UN105 W84 C~55XC 2015 10 23.32395 01 58 36.518 -26 16 38.81 23.2r 15UN105 W84 C~55XC 2015 11 03.18232 01 57 45.580 -26 19 32.24 24.2r 15UN105 W84 C~55XC 2015 11 05.20075 01 57 36.237 -26 19 52.24 23.1r 15UN105 W84 C~55XC 2015 11 14.11356 01 56 56.248 -26 20 30.29 23.7r 15UN105 W84 C~55XC 2016 11 09.25846 02 04 45.441 -25 58 52.58 23.6i 15UN105 W84 C~55XC 2016 11 09.26672 02 04 45.390 -25 58 52.32 24.2g 15UN105 W84 C~55XC 2017 11 24.23228 02 11 05.376 -25 35 49.64 23.8r 15UN105 W84 C~55XC 2017 11 24.23365 02 11 05.383 -25 35 49.73 23.0i 15UN105 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 0.04 0.00 0.21
2 0.9668 6834.43 0.03 -1777.20 -0.10
3 0.9966 6143.26 0.02 -1626.87 -0.05
4 1.0021 6021.76 -0.22 -1588.85 -0.23
5 1.0265 5522.82 0.10 -1383.97 -0.03
6 2.0152 11759.23 0.01 -3073.97 -0.09
7 2.0153 11758.73 -0.01 -3073.42 0.26
8 3.0556 16975.42 -0.04 -4227.33 0.09
9 3.0556 16975.46 0.06 -4227.45 -0.08
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.
15UN105 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 193.185 196.787 189.723 ecceobj 0.786 0.790 0.782 incobj 37.015 37.016 37.015 qmin 39.289 39.773 39.216 qmax 348.976 354.318 341.408 amean 185.232 188.523 181.978 amin 179.856 182.865 176.338 amax 195.012 198.079 191.150 emean 0.778 0.779 0.774 emin 0.768 0.768 0.764 emax 0.790 0.790 0.786 imean 35.336 35.788 35.270 imin 34.888 35.102 34.799 imax 36.032 36.392 36.014 excite_mean 0.969 0.974 0.966 fracstop 1.000 1.000 1.000 cjmean 2.708 2.708 2.708 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 243.6 236.2 245.0 kozaiamp 12.3 5.9 14.2