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: 14UN250 # Created Tue Jan 21 02:10:20 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 20 # Arc: 10.19y # First observation: 2014/10/23 # Last observation: 2024/12/31 # Chi-squared of fit: 85.70 DOF: 30 RMS: 0.39 # Min/Max residuals: -0.25 2.21 # Exact a, adot, b, bdot, g, gdot: 1.589568E-05 2.558296E-02 -2.174733E-06 -4.117434E-03 2.573272E-02 1.186079E-03 # Covariance matrix: 3.3518E-13 -1.5884E-13 -2.8271E-14 2.0289E-14 8.0800E-14 -5.7752E-13 -1.5884E-13 1.1311E-13 2.0810E-14 -1.6343E-14 1.6726E-15 4.2552E-13 -2.8271E-14 2.0810E-14 1.5049E-13 -2.5973E-14 -8.6581E-15 8.6973E-14 2.0289E-14 -1.6343E-14 -2.5973E-14 9.7298E-15 -4.2597E-15 -6.4139E-14 8.0800E-14 1.6726E-15 -8.6581E-15 -4.2597E-15 4.7956E-13 -1.7388E-13 -5.7752E-13 4.2552E-13 8.6973E-14 -6.4139E-14 -1.7388E-13 1.7772E-12 # lat0 lon0 xBary yBary zBary JD0 -28.233908 38.886293 0.162139 -0.465041 -0.866453 2456953.855358 # Heliocentric elements and errors Epoch: 2456954.5000 = 2014/10/24 Mean Anomaly: 57.54163 +/- 0.079 Argument of Peri: 190.80710 +/- 0.087 Long of Asc Node: 148.22145 +/- 0.000 Inclination: 28.98937 +/- 0.000 Eccentricity: 0.04380302 +/- 0.0001 Semi-Major Axis: 40.62706180 +/- 0.0047 Time of Perihelion: 2441836.2601 +/- 20.9 Perihelion: 38.84747398 +/- 0.0055 Aphelion: 42.40664962 +/- 0.0058 Period (y) 258.9592 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.51449784 +/- 0.0007 Ecliptic Y 21.98628870 +/- 0.0006 Ecliptic Z -18.38420282 +/- 0.0005 Ecliptic XDOT -0.00178799 +/- 0.0000 Ecliptic YDOT 0.00205362 +/- 0.0000 Ecliptic ZDOT -0.00044555 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.72935364 +/- 0.0006 Geocenter to KBO 38.86103405 +/- 0.0010 # Hcoef: 7.60
The following table shows the complete astrometric record for 14UN250. 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 (14UN250) followed by the observatory code and reference code for the source of the astrometry.
2014 10 23.35458 03 01 37.96 -12 21 31.1 23.8r 14UN250 W84 C~3coQ 2014 10 23.35594 03 01 37.965 -12 21 31.08 23.6i 14UN250 W84 C~4yUy 2014 10 29.33865 03 01 08.948 -12 24 33.20 24.0g 14UN250 W84 C~4yUy 2014 11 03.32573 03 00 44.157 -12 26 46.05 22.9i 14UN250 W84 C~4yUy 2015 12 17.17492 03 03 17.389 -12 17 34.52 23.9g 14UN250 W84 C~4yUy 2016 09 24.33743 03 15 25.450 -11 33 04.21 23.4r 14UN250 W84 C~4yUy 2016 09 25.28379 03 15 22.646 -11 33 46.41 23.8g 14UN250 W84 C~4yUy 2016 11 10.29386 03 12 03.505 -12 00 12.25 23.6r 14UN250 W84 C~4yUy 2016 11 10.29523 03 12 03.488 -12 00 12.21 24.3g 14UN250 W84 C~4yUy 2016 11 22.20715 03 11 03.445 -12 03 12.74 22.9i 14UN250 W84 C~4yUy 2016 12 23.17814 03 08 47.810 -12 01 27.21 23.7r 14UN250 W84 C~4yUy 2016 12 23.17951 03 08 47.808 -12 01 27.23 24.3g 14UN250 W84 C~4yUy 2017 10 29.34346 03 19 00.155 -11 39 49.48 23.6r 14UN250 W84 C~4yUz 2017 10 29.34483 03 19 00.168 -11 39 49.44 23.7i 14UN250 W84 C~4yUz 2017 10 29.34620 03 19 00.164 -11 39 49.30 24.0g 14UN250 W84 C~4yUz 2018 10 19.30647 03 25 41.709 -11 18 23.50 24.0g 14UN250 W84 C~4yUz 2018 10 20.36891 03 25 37.044 -11 19 01.10 23.5i 14UN250 W84 C~4yUz 2024 12 31.10409 03 54 55.686 -09 48 09.50 23.4G 14UN250 G37 2024 12 31.15533 03 54 55.484 -09 48 08.78 14UN250 G37 2024 12 31.20612 03 54 55.299 -09 48 07.50 14UN250 G37
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 -0.01 0.00 -0.08
2 0.0000 0.00 0.16 0.00 -0.02
3 0.0164 0.00 -0.11 0.00 0.00
4 0.0300 0.00 -0.14 0.00 0.12
5 1.1494 0.00 0.30 0.00 -0.04
6 1.9219 0.00 0.04 0.00 0.03
7 1.9245 0.00 0.11 0.00 0.03
8 2.0505 0.00 -0.10 0.00 -0.04
9 2.0505 0.00 -0.25 0.00 0.03
10 2.0831 0.00 -0.04 0.00 0.11
11 2.1679 0.00 -0.03 0.00 -0.02
12 2.1679 0.00 0.01 0.00 -0.07
13 3.0171 0.00 -0.16 0.00 -0.11
14 3.0171 0.00 0.14 0.00 -0.03
15 3.0171 0.00 0.18 0.00 0.15
16 3.9889 0.00 -0.09 0.00 0.01
17 3.9918 0.00 0.09 0.00 -0.02
18 10.1896 0.00 ( 2.29) 0.00 ( 0.61)
19 10.1897 0.00 2.21 0.00 0.37
20 10.1899 0.00 ( 2.36) 0.00 ( 0.69)
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.
14UN250 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.932 40.932 40.932 ecceobj 0.051 0.051 0.051 incobj 28.945 28.945 28.945 qmin 37.975 37.974 38.008 qmax 43.427 43.428 43.425 amean 40.636 40.636 40.636 amin 40.337 40.337 40.335 amax 40.953 40.952 40.954 emean 0.048 0.048 0.048 emin 0.037 0.037 0.037 emax 0.061 0.061 0.061 imean 27.919 27.919 27.919 imin 27.536 27.537 27.536 imax 28.286 28.286 28.289 excite_mean 0.471 0.471 0.471 fracstop 1.000 1.000 1.000 cjmean 2.791 2.791 2.791 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 192.4 192.4 192.4 kozaiamp 180.0 180.0 179.9