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 Sat Apr 20 01:16:39 2024 # Orbit generated from Bernstein formalism # Fitting 24 observations of 24 # Arc: 3.99y # First observation: 2014/10/23 # Last observation: 2018/10/20 Preliminary a, adot, b, bdot, g, gdot: -0.000044 0.025539 0.000010 -0.004123 0.025745 0.000000 # Chi-squared of fit: 9.26 DOF: 42 RMS: 0.11 # Min/Max residuals: -0.22 0.26 # Exact a, adot, b, bdot, g, gdot: 1.590525E-05 2.558295E-02 -2.153672E-06 -4.117421E-03 2.573254E-02 1.185367E-03 # Covariance matrix: 2.3321E-13 -1.4914E-13 -7.2228E-15 1.2111E-14 1.1104E-14 -8.8151E-13 -1.4914E-13 3.1330E-13 1.4043E-14 -4.4926E-14 2.6898E-13 3.1812E-12 -7.2228E-15 1.4043E-14 1.9194E-13 -7.6137E-14 7.3834E-16 1.6451E-13 1.2111E-14 -4.4926E-14 -7.6137E-14 4.9699E-14 -4.6037E-14 -5.2732E-13 1.1104E-14 2.6898E-13 7.3834E-16 -4.6037E-14 6.0772E-13 3.1648E-12 -8.8151E-13 3.1812E-12 1.6451E-13 -5.2732E-13 3.1648E-12 3.7338E-11 # lat0 lon0 xBary yBary zBary JD0 -28.233908 38.886293 0.162139 -0.465041 -0.866453 2456953.855358 # Heliocentric elements and errors Epoch: 2456950.5000 = 2014/10/20 Mean Anomaly: 57.48993 +/- 0.156 Argument of Peri: 190.84678 +/- 0.185 Long of Asc Node: 148.22136 +/- 0.001 Inclination: 28.98936 +/- 0.000 Eccentricity: 0.04378839 +/- 0.0002 Semi-Major Axis: 40.62807329 +/- 0.0039 Time of Perihelion: 2441845.2805 +/- 40.9 Perihelion: 38.84903524 +/- 0.0092 Aphelion: 42.40711135 +/- 0.0093 Period (y) 258.9689 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.51468241 +/- 0.0008 Ecliptic Y 21.98643804 +/- 0.0007 Ecliptic Z -18.38432938 +/- 0.0006 Ecliptic XDOT -0.00178805 +/- 0.0000 Ecliptic YDOT 0.00205359 +/- 0.0000 Ecliptic ZDOT -0.00044551 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.72964601 +/- 0.0007 Geocenter to KBO 38.86130082 +/- 0.0012 # Hcoef: 7.58
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 37.961 -12 21 31.07 23.1r 14UN250 W84 C~4yUy 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 2014 11 03.32573 03 00 44.16 -12 26 46.1 23.2i 14UN250 W84 C~3coQ 2015 12 17.17492 03 03 17.389 -12 17 34.52 23.9g 14UN250 W84 C~4yUy 2015 12 17.17492 03 03 17.39 -12 17 34.5 23.9g 14UN250 W84 C~3coQ 2016 09 24.33743 03 15 25.450 -11 33 04.21 23.4r 14UN250 W84 C~4yUy 2016 09 24.33743 03 15 25.45 -11 33 04.2 23.6r 14UN250 W84 C~3coQ 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 10.29386 03 12 03.50 -12 00 12.3 23.8r 14UN250 W84 C~3coQ 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 11 22.20715 03 11 03.44 -12 03 12.7 23.0i 14UN250 W84 C~3coQ 2016 12 23.17814 03 08 47.810 -12 01 27.21 23.7r 14UN250 W84 C~4yUy 2016 12 23.17814 03 08 47.81 -12 01 27.2 23.9r 14UN250 W84 C~3coQ 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
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 -0.08
2 0.0000 0.02 -0.01 0.02 -0.05
3 0.0000 0.08 0.14 -0.00 -0.07
4 0.0164 -460.85 -0.11 -38.08 0.03
5 0.0300 -847.36 -0.08 -49.29 0.09
6 0.0300 -847.38 -0.10 -49.22 0.15
7 1.1494 1456.75 0.24 -238.60 -0.14
8 1.1494 1456.77 0.26 -238.58 -0.12
9 1.9219 12446.27 0.08 -1171.85 0.02
10 1.9219 12446.27 0.07 -1171.85 0.01
11 1.9245 12393.29 0.13 -1198.20 -0.01
12 2.0505 9102.03 -0.19 -1739.42 -0.03
13 2.0505 9102.12 -0.10 -1739.40 -0.01
14 2.0505 9101.89 -0.22 -1739.28 0.10
15 2.0831 8208.63 -0.01 -1622.86 0.11
16 2.0831 8208.57 -0.06 -1622.80 0.17
17 2.1679 6358.12 -0.05 -877.21 -0.00
18 2.1679 6358.11 -0.06 -877.22 -0.01
19 2.1679 6358.08 -0.03 -877.23 -0.07
20 3.0171 15303.49 -0.18 -2600.72 -0.06
21 3.0171 15303.68 0.12 -2600.75 -0.08
22 3.0171 15303.67 0.22 -2600.60 0.08
23 3.9889 21345.04 -0.09 -3371.19 0.04
24 3.9918 21266.94 0.07 -3383.45 -0.05
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 40.944 40.920 ecceobj 0.051 0.051 0.051 incobj 28.945 28.945 28.945 qmin 38.041 37.981 38.035 qmax 43.416 43.453 43.359 amean 40.636 40.646 40.625 amin 40.331 40.344 40.314 amax 40.946 40.966 40.946 emean 0.048 0.049 0.048 emin 0.037 0.037 0.037 emax 0.061 0.061 0.060 imean 27.919 27.916 27.921 imin 27.534 27.536 27.540 imax 28.281 28.274 28.283 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 192.5 191.1 191.1 kozaiamp 179.9 179.9 180.0