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: 15VX169 # Created Tue Apr 1 01:10:40 2025 # Orbit generated from Bernstein formalism # Fitting 33 observations of 33 # Arc: 2.32y # First observation: 2015/08/20 # Last observation: 2017/12/13 Preliminary a, adot, b, bdot, g, gdot: -0.000077 0.020111 -0.000001 0.001082 0.022101 0.000000 # Chi-squared of fit: 7.83 DOF: 60 RMS: 0.09 # Min/Max residuals: -0.26 0.31 # Exact a, adot, b, bdot, g, gdot: 1.410084E-05 1.980136E-02 9.940433E-07 1.065987E-03 2.184344E-02 -3.481199E-04 # Covariance matrix: 1.7009E-13 5.2529E-15 -3.0370E-17 4.7906E-15 1.3107E-13 2.3386E-12 5.2529E-15 2.8459E-13 -2.7482E-15 1.7304E-14 1.9415E-13 8.3511E-12 -3.0370E-17 -2.7482E-15 8.9358E-14 -6.2708E-14 -1.6525E-15 -1.2243E-13 4.7906E-15 1.7304E-14 -6.2708E-14 8.6204E-14 1.5597E-14 7.3194E-13 1.3107E-13 1.9415E-13 -1.6525E-15 1.5597E-14 2.6229E-13 7.5576E-12 2.3386E-12 8.3511E-12 -1.2243E-13 7.3194E-13 7.5576E-12 3.5302E-10 # lat0 lon0 xBary yBary zBary JD0 -0.856023 54.413423 1.013461 -0.000588 -0.048099 2457255.045359 # Heliocentric elements and errors Epoch: 2457250.5000 = 2015/08/16 Mean Anomaly: 225.92449 +/- 0.624 Argument of Peri: 123.24540 +/- 0.621 Long of Asc Node: 68.71326 +/- 0.004 Inclination: 3.18328 +/- 0.001 Eccentricity: 0.06109132 +/- 0.0006 Semi-Major Axis: 43.89293989 +/- 0.0037 Time of Perihelion: 2496808.7799 +/- 184.1 Perihelion: 41.21146239 +/- 0.0274 Aphelion: 46.57441740 +/- 0.0275 Period (y) 290.8039 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.48619647 +/- 0.0006 Ecliptic Y 36.67531528 +/- 0.0009 Ecliptic Z -0.68388179 +/- 0.0000 Ecliptic XDOT -0.00204459 +/- 0.0000 Ecliptic YDOT 0.00140407 +/- 0.0000 Ecliptic ZDOT 0.00013430 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 45.83707497 +/- 0.0008 Geocenter to KBO 45.78032471 +/- 0.0011 # Hcoef: 7.79
The following table shows the complete astrometric record for 15VX169. 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 (15VX169) followed by the observatory code and reference code for the source of the astrometry.
2015 08 20.54457 03 29 04.406 +18 02 37.69 24.6w 15VX169 568 C~2nw3 2015 08 20.55007 03 29 04.411 +18 02 37.74 25.1w 15VX169 568 C~2nw3 2015 09 07.60044 03 28 58.624 +18 02 07.38 23.8w 15VX169 568 C~2nw3 2015 09 12.44733 03 28 52.276 +18 01 42.46 25.2w 15VX169 568 C~2nw3 2015 10 07.49766 03 27 50.126 +17 57 50.96 24.8w 15VX169 568 C~2nw3 2015 10 07.55607 03 27 49.936 +17 57 50.36 24.7w 15VX169 568 C~2nw3 2015 10 09.53675 03 27 43.152 +17 57 25.55 24.6w 15VX169 568 C~2nw3 2015 11 06.31257 03 25 48.584 +17 50 33.61 23.8r 15VX169 568 C~2nw3 2015 11 06.37589 03 25 48.311 +17 50 32.53 24.2r 15VX169 568 C~2nw3 2015 11 06.44667 03 25 47.968 +17 50 31.38 24.6r 15VX169 568 C~2nw3 2015 11 07.46686 03 25 43.295 +17 50 14.75 24.5w 15VX169 568 C~2nw3 2015 11 17.44798 03 24 56.940 +17 47 30.47 24.9w 15VX169 568 C~2nw3 2015 11 17.49527 03 24 56.713 +17 47 29.86 24.5w 15VX169 568 C~2nw3 2015 12 06.31417 03 23 31.286 +17 42 30.99 24.5w 15VX169 568 C~2nw3 2015 12 06.44064 03 23 30.713 +17 42 29.31 25.1w 15VX169 568 C~2nw3 2015 12 06.44787 03 23 30.695 +17 42 29.18 24.7w 15VX169 568 C~2nw3 2015 12 31.33561 03 21 58.063 +17 37 16.63 24.7w 15VX169 568 C~2nw3 2016 01 07.36493 03 21 38.886 +17 36 15.74 23.5w 15VX169 568 C~2nw3 2016 01 07.41708 03 21 38.735 +17 36 15.19 24.4w 15VX169 568 C~2nw3 2016 02 05.31154 03 21 02.894 +17 34 50.42 24.9w 15VX169 568 C~2nw3 2016 09 07.61412 03 33 33.893 +18 22 07.33 15VX169 568 C~2nw3 2016 09 27.53935 03 32 56.077 +18 19 48.93 24.5w 15VX169 568 C~2nw3 2016 10 09.53365 03 32 19.013 +18 17 37.61 24.6w 15VX169 568 C~2nw3 2016 10 09.60571 03 32 18.764 +18 17 36.76 24.6w 15VX169 568 C~2nw3 2016 11 02.58549 03 30 41.280 +18 11 56.64 25.1w 15VX169 568 C~2nw3 2016 12 24.34518 03 26 54.927 +17 59 10.56 24.7w 15VX169 568 C~2nw3 2016 12 24.36175 03 26 54.874 +17 59 10.50 24.7w 15VX169 568 C~2nw3 2017 01 27.31949 03 25 39.184 +17 55 27.21 24.7w 15VX169 568 C~2nw3 2017 01 27.32464 03 25 39.177 +17 55 27.11 15VX169 568 C~2nw3 2017 09 15.55809 03 38 01.072 +18 41 09.48 24.6w 15VX169 568 C~2nw3 2017 09 20.60688 03 37 51.738 +18 40 36.78 24.6w 15VX169 568 C~2nw3 2017 12 13.37172 03 32 16.698 +18 21 55.35 24.6w 15VX169 568 C~2nw3 2017 12 13.40930 03 32 16.540 +18 21 54.96 24.5w 15VX169 568 C~2nw3
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 0.05 0.00 -0.05
2 0.0000 0.08 0.10 0.03 -0.01
3 0.0494 -87.37 0.04 -9.32 -0.07
4 0.0627 -181.25 -0.08 -11.42 0.09
5 0.1313 -1097.59 -0.04 -19.21 -0.05
6 0.1314 -1100.37 0.14 -19.13 0.02
7 0.1369 -1200.30 0.02 -19.45 -0.05
8 0.2129 -2886.89 -0.16 -15.63 0.08
9 0.2131 -2890.94 0.11 -15.71 -0.05
10 0.2133 -2895.97 -0.08 -15.61 -0.01
11 0.2161 -2964.75 0.04 -15.19 -0.02
12 0.2434 -3646.97 -0.00 -9.94 -0.07
13 0.2435 -3650.26 0.00 -9.73 0.11
14 0.2951 -4907.18 -0.08 5.66 -0.04
15 0.2954 -4915.53 -0.26 6.09 0.23
16 0.2954 -4915.81 -0.08 6.03 0.16
17 0.3636 -6276.83 -0.05 36.74 -0.01
18 0.3828 -6557.75 0.31 47.16 -0.07
19 0.3830 -6559.98 0.01 47.18 -0.13
20 0.4621 -7077.77 0.07 95.09 0.00
21 1.0515 4009.02 -0.00 211.87 0.05
22 1.1061 3452.98 -0.05 205.54 -0.06
23 1.1389 2908.95 -0.05 204.03 -0.00
24 1.1391 2905.30 0.06 204.05 0.01
25 1.2048 1475.36 0.01 207.53 -0.11
26 1.3465 -1841.51 -0.08 251.44 -0.08
27 1.3465 -1842.26 0.04 251.57 0.03
28 1.4395 -2944.15 0.02 302.10 0.03
29 1.4395 -2944.27 -0.04 302.02 -0.05
30 2.0726 7974.34 0.07 431.19 -0.01
31 2.0864 7837.54 -0.09 430.10 0.08
32 2.3157 2938.60 0.01 462.20 -0.05
33 2.3159 2936.32 0.06 462.36 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.
15VX169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.269 44.277 44.261 ecceobj 0.052 0.052 0.051 incobj 3.175 3.175 3.175 qmin 40.592 40.596 40.633 qmax 47.518 47.585 47.516 amean 43.967 43.976 43.959 amin 43.629 43.626 43.615 amax 44.315 44.337 44.315 emean 0.057 0.058 0.056 emin 0.040 0.041 0.040 emax 0.073 0.074 0.072 imean 1.707 1.709 1.704 imin 0.924 0.926 0.923 imax 2.295 2.299 2.290 excite_mean 0.064 0.065 0.064 fracstop 1.000 1.000 1.000 cjmean 3.096 3.096 3.096 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 185.6 185.2 185.8 kozaiamp 180.0 179.9 180.0