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: 14UM228
# Created Sun Dec 22 02:10:07 2024
# Orbit generated from Bernstein formalism
# Fitting 29 observations of 29
# Arc: 2.33y
# First observation: 2013/08/09
# Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
-0.000244 0.049720 0.000014 -0.001843 0.036424 0.000000
# Chi-squared of fit: 21.74 DOF: 52 RMS: 0.15
# Min/Max residuals: -0.40 0.33
# Exact a, adot, b, bdot, g, gdot:
2.033890E-05 4.906667E-02 -1.328547E-06 -1.821126E-03 3.631428E-02 8.900781E-04
# Covariance matrix:
1.8560E-13 -1.7901E-13 -1.1813E-15 2.2038E-15 1.7200E-14 -1.1764E-12
-1.7901E-13 7.6439E-13 1.5385E-15 -2.3119E-14 3.2038E-13 9.6308E-12
-1.1813E-15 1.5385E-15 1.6092E-13 -1.2389E-13 -1.6023E-15 4.0929E-14
2.2038E-15 -2.3119E-14 -1.2389E-13 1.3837E-13 -1.1430E-14 -3.5797E-13
1.7200E-14 3.2038E-13 -1.6023E-15 -1.1430E-14 2.6743E-13 4.1714E-12
-1.1764E-12 9.6308E-12 4.0929E-14 -3.5797E-13 4.1714E-12 1.5339E-10
# lat0 lon0 xBary yBary zBary JD0
4.532069 27.176087 0.956765 0.026947 -0.339571 2456513.995978
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 357.66671 +/- 0.033
Argument of Peri: 118.06443 +/- 0.064
Long of Asc Node: 271.51533 +/- 0.005
Inclination: 4.88394 +/- 0.000
Eccentricity: 0.29403343 +/- 0.0000
Semi-Major Axis: 39.48525002 +/- 0.0026
Time of Perihelion: 2457097.8769 +/- 8.3
Perihelion: 27.87526656 +/- 0.0024
Aphelion: 51.09523348 +/- 0.0037
Period (y) 248.1193 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 25.16051576 +/- 0.0003
Ecliptic Y 11.84516669 +/- 0.0002
Ecliptic Z 2.17592775 +/- 0.0000
Ecliptic XDOT -0.00162662 +/- 0.0000
Ecliptic YDOT 0.00332554 +/- 0.0000
Ecliptic ZDOT -0.00013143 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 27.89433973 +/- 0.0003
Geocenter to KBO 27.53737962 +/- 0.0004
# Hcoef: 10.17
The following table shows the complete astrometric record for 14UM228. 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 (14UM228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.49520 01 34 09.053 +14 41 27.20 24.6r 14UM228 568 C~2SDg 2013 08 09.53863 01 34 08.976 +14 41 26.92 24.1r 14UM228 568 C~2SDg 2013 09 02.41327 01 33 03.775 +14 38 28.30 24.4r 14UM228 568 C~2SDg 2013 09 02.45665 01 33 03.601 +14 38 27.89 24.0r 14UM228 568 C~2SDg 2013 09 03.43268 01 32 59.533 +14 38 11.09 24.9r 14UM228 568 C~2SDg 2013 09 03.47930 01 32 59.315 +14 38 10.33 24.8r 14UM228 568 C~2SDg 2013 10 08.49207 01 29 43.375 +14 21 46.36 24.4r 14UM228 568 C~2SDg 2013 12 04.34687 01 24 16.535 +13 45 46.84 24.5r 14UM228 568 C~2SDg 2013 12 29.29682 01 23 25.437 +13 36 22.45 25.0r 14UM228 568 C~2SDg 2014 07 26.52194 01 45 09.072 +15 34 06.76 24.5r 14UM228 568 C~2SDg 2014 07 26.56498 01 45 09.108 +15 34 07.42 24.5r 14UM228 568 C~2SDg 2014 07 26.60835 01 45 09.143 +15 34 07.94 24.6r 14UM228 568 C~2SDg 2014 08 24.45776 01 44 43.441 +15 35 55.99 24.6r 14UM228 568 C~2SDg 2014 08 24.53170 01 44 43.214 +15 35 55.61 24.8r 14UM228 568 C~2SDg 2014 08 30.43607 01 44 24.783 +15 34 58.40 24.9r 14UM228 568 C~2SDg 2014 08 30.54438 01 44 24.412 +15 34 57.06 24.9r 14UM228 568 C~2SDg 2014 09 18.46299 01 43 00.131 +15 29 04.51 24.7r 14UM228 568 C~2SDg 2014 09 18.50571 01 42 59.892 +15 29 03.59 24.8r 14UM228 568 C~2SDg 2014 09 23.50400 01 42 32.232 +15 26 51.73 24.4r 14UM228 568 C~2SDg 2014 10 22.28665 01 39 28.673 +15 10 23.93 24.8r 14UM228 568 C~2SDg 2014 10 22.33133 01 39 28.350 +15 10 22.63 24.4r 14UM228 568 C~2SDg 2014 10 22.37555 01 39 28.039 +15 10 20.59 24.5r 14UM228 568 C~2SDg 2014 10 23.47137 01 39 20.721 +15 09 37.53 24.8r 14UM228 568 C~2SDg 2014 11 20.21853 01 36 28.818 +14 51 28.33 24.7r 14UM228 568 C~2SDg 2014 11 20.35900 01 36 28.033 +14 51 23.14 24.5r 14UM228 568 C~2SDg 2014 11 21.25530 01 36 23.269 +14 50 49.80 24.8r 14UM228 568 C~2SDg 2014 11 21.42173 01 36 22.353 +14 50 43.84 24.3r 14UM228 568 C~2SDg 2015 10 12.48210 01 51 56.148 +16 11 40.94 14UM228 568 C~2SDg 2015 12 07.40375 01 46 21.014 +15 37 13.70 25.0w 14UM228 568 C~2SDg
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 0.21 0.00 0.11
2 0.0001 -1.14 -0.16 0.15 -0.14
3 0.0655 -946.95 0.07 180.61 -0.08
4 0.0656 -949.45 0.29 181.15 0.15
5 0.0683 -1010.54 0.01 187.19 -0.04
6 0.0684 -1013.76 -0.20 187.64 0.08
7 0.1643 -4022.07 0.14 322.10 -0.30
8 0.3199 -9245.68 -0.14 92.34 -0.10
9 0.3882 -10149.96 -0.16 -150.84 0.32
10 0.9611 10061.57 0.07 -493.69 -0.05
11 0.9612 10062.29 0.01 -493.26 -0.02
12 0.9613 10062.95 -0.11 -492.95 -0.12
13 1.0403 9753.26 0.15 -260.03 -0.19
14 1.0405 9750.05 0.00 -259.23 0.03
15 1.0566 9480.19 -0.40 -218.20 0.22
16 1.0569 9474.70 -0.19 -217.55 0.07
17 1.1087 8208.59 -0.04 -113.68 -0.07
18 1.1089 8205.02 -0.07 -113.31 0.09
19 1.1225 7783.79 0.05 -93.84 0.21
20 1.2013 4947.78 0.29 -63.58 -0.17
21 1.2015 4942.95 0.18 -63.11 0.33
22 1.2016 4938.01 -0.08 -63.39 0.08
23 1.2046 4823.60 -0.01 -65.38 -0.25
24 1.2806 2106.86 0.10 -179.40 -0.14
25 1.2809 2094.37 -0.05 -180.10 -0.05
26 1.2834 2017.89 0.03 -186.06 -0.11
27 1.2839 2003.35 -0.08 -186.78 0.15
28 2.1738 16378.43 0.00 -440.34 0.02
29 2.3269 11102.71 0.06 -686.56 -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.
14UM228 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.701 39.716 39.686 ecceobj 0.298 0.298 0.297 incobj 4.888 4.888 4.888 qmin 27.515 27.474 27.519 qmax 52.048 52.126 52.110 amean 39.455 39.455 39.455 amin 38.959 38.964 38.957 amax 40.064 40.041 40.048 emean 0.287 0.287 0.287 emin 0.272 0.270 0.271 emax 0.301 0.302 0.302 imean 6.815 6.838 6.759 imin 6.214 6.317 6.144 imax 7.418 7.478 7.364 excite_mean 0.310 0.310 0.310 fracstop 1.000 1.000 1.000 cjmean 2.940 2.940 2.940 libcent 0 179.4 179.6 179.9 libamp 0 96.2 93.1 98.2 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 174.1 172.8 178.2 kozaiamp 179.9 180.0 179.9