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: 14UL228
# Created Mon Apr 28 01:10:10 2025
# Orbit generated from Bernstein formalism
# Fitting 35 observations of 35
# Arc: 4.06y
# First observation: 2013/08/09
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000164 0.025885 0.000009 -0.001531 0.024750 0.000000
# Chi-squared of fit: 7.50 DOF: 64 RMS: 0.08
# Min/Max residuals: -0.21 0.22
# Exact a, adot, b, bdot, g, gdot:
1.632393E-05 2.549169E-02 -7.148530E-07 -1.509095E-03 2.460311E-02 -1.357652E-03
# Covariance matrix:
1.6996E-13 -1.1112E-13 -3.1411E-15 3.4620E-15 5.2767E-14 -6.8246E-13
-1.1112E-13 2.1859E-13 4.5358E-15 -1.0357E-14 6.1383E-14 1.9670E-12
-3.1411E-15 4.5358E-15 8.8253E-14 -4.7735E-14 -2.5460E-16 5.1011E-14
3.4620E-15 -1.0357E-14 -4.7735E-14 4.8601E-14 -4.2489E-15 -1.1975E-13
5.2767E-14 6.1383E-14 -2.5460E-16 -4.2489E-15 1.2059E-13 7.7441E-13
-6.8246E-13 1.9670E-12 5.1011E-14 -1.1975E-13 7.7441E-13 2.2720E-11
# lat0 lon0 xBary yBary zBary JD0
3.896293 27.820464 0.960468 0.022459 -0.329280 2456514.007628
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 332.26246 +/- 0.050
Argument of Peri: 167.31954 +/- 0.072
Long of Asc Node: 256.00255 +/- 0.004
Inclination: 5.07383 +/- 0.000
Eccentricity: 0.14598591 +/- 0.0001
Semi-Major Axis: 46.76497251 +/- 0.0032
Time of Perihelion: 2465510.5492 +/- 16.2
Perihelion: 39.93794533 +/- 0.0059
Aphelion: 53.59199969 +/- 0.0064
Period (y) 319.8079 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 36.60391459 +/- 0.0005
Ecliptic Y 18.23307688 +/- 0.0003
Ecliptic Z 2.76188713 +/- 0.0000
Ecliptic XDOT -0.00145335 +/- 0.0000
Ecliptic YDOT 0.00244294 +/- 0.0000
Ecliptic ZDOT -0.00017767 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.98682320 +/- 0.0005
Geocenter to KBO 40.64526476 +/- 0.0006
# Hcoef: 8.06
The following table shows the complete astrometric record for 14UL228. 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 (14UL228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.50685 01 37 34.855 +14 19 59.02 24.2r 14UL228 568 C~2SDf 2013 08 09.55027 01 37 34.809 +14 19 59.02 24.8r 14UL228 568 C~2SDf 2013 09 02.42521 01 36 45.869 +14 17 08.15 23.9r 14UL228 568 C~2SDf 2013 09 02.46835 01 36 45.758 +14 17 07.80 24.1r 14UL228 568 C~2SDf 2013 09 03.44432 01 36 42.813 +14 16 54.71 24.1r 14UL228 568 C~2SDf 2013 09 03.49095 01 36 42.659 +14 16 54.14 24.8r 14UL228 568 C~2SDf 2013 10 08.50533 01 34 22.467 +14 04 50.30 23.8r 14UL228 568 C~2SDf 2013 11 01.50035 01 32 29.801 +13 53 40.20 23.6r 14UL228 568 C~2SDf 2013 11 28.28696 01 30 42.064 +13 41 36.95 24.1r 14UL228 568 C~2SDf 2013 12 05.28909 01 30 20.763 +13 38 56.26 24.2r 14UL228 568 C~2SDf 2013 12 29.25967 01 29 38.348 +13 32 16.71 24.7r 14UL228 568 C~2SDf 2013 12 30.36406 01 29 37.638 +13 32 04.97 24.2r 14UL228 568 C~2SDf 2014 01 02.24156 01 29 36.373 +13 31 37.28 23.8r 14UL228 568 C~2SDf 2014 07 26.52194 01 43 24.768 +14 45 55.72 24.2r 14UL228 568 C~2SDf 2014 07 26.56498 01 43 24.777 +14 45 55.93 24.1r 14UL228 568 C~2SDf 2014 07 26.60835 01 43 24.788 +14 45 56.25 24.4r 14UL228 568 C~2SDf 2014 08 24.45776 01 42 58.197 +14 45 47.10 24.0r 14UL228 568 C~2SDf 2014 08 24.53170 01 42 58.028 +14 45 46.59 24.1r 14UL228 568 C~2SDf 2014 08 30.43607 01 42 43.769 +14 44 51.39 24.0r 14UL228 568 C~2SDf 2014 08 30.54438 01 42 43.462 +14 44 50.13 24.6r 14UL228 568 C~2SDf 2014 09 18.46299 01 41 40.947 +14 40 02.18 24.3r 14UL228 568 C~2SDf 2014 09 18.50571 01 41 40.781 +14 40 01.32 24.4r 14UL228 568 C~2SDf 2014 09 23.50400 01 41 20.698 +14 38 20.10 23.9r 14UL228 568 C~2SDf 2014 10 22.28665 01 39 09.150 +14 26 14.90 24.1r 14UL228 568 C~2SDf 2014 10 22.33133 01 39 08.928 +14 26 13.67 24.2r 14UL228 568 C~2SDf 2014 10 22.37555 01 39 08.716 +14 26 12.41 23.7r 14UL228 568 C~2SDf 2014 10 23.47137 01 39 03.481 +14 25 41.83 24.0r 14UL228 568 C~2SDf 2014 10 25.48732 01 38 53.909 +14 24 44.94 23.9r 14UL228 568 C~2SDf 2014 11 20.21853 01 37 00.061 +14 12 47.21 14UL228 568 C~2SDf 2014 11 20.35900 01 36 59.515 +14 12 43.44 24.1r 14UL228 568 C~2SDf 2014 11 21.25530 01 36 56.026 +14 12 19.84 23.8r 14UL228 568 C~2SDf 2014 11 21.42173 01 36 55.385 +14 12 15.42 24.4r 14UL228 568 C~2SDg 2015 12 07.42022 01 41 51.585 +14 33 06.80 24.4w 14UL228 568 C~2SDg 2017 08 25.58743 02 00 32.859 +16 03 31.04 24.4w 14UL228 568 C~2SDg 2017 08 30.60899 02 00 22.070 +16 02 53.45 24.2w 14UL228 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 0.01 0.00 -0.05
2 0.0001 -0.62 0.06 0.24 -0.04
3 0.0655 -725.40 -0.21 99.64 -0.06
4 0.0656 -727.03 0.14 99.90 0.02
5 0.0683 -771.67 0.10 103.29 0.02
6 0.0684 -773.96 0.02 103.57 0.11
7 0.1643 -2936.48 0.11 174.17 0.04
8 0.2300 -4708.48 -0.18 153.09 0.09
9 0.3033 -6435.32 -0.15 59.99 -0.17
10 0.3225 -6783.56 0.02 25.57 0.08
11 0.3881 -7506.86 0.09 -116.48 -0.01
12 0.3911 -7520.85 0.05 -123.55 0.05
13 0.3990 -7548.29 -0.08 -142.44 0.02
14 0.9610 5301.26 0.10 -377.47 0.03
15 0.9611 5301.46 -0.01 -377.32 -0.05
16 0.9613 5301.72 -0.04 -377.08 -0.03
17 1.0402 4938.00 0.01 -247.74 -0.07
18 1.0405 4935.52 0.00 -247.34 -0.00
19 1.0566 4722.52 0.07 -224.89 0.03
20 1.0569 4717.90 -0.12 -224.47 -0.00
21 1.1087 3767.55 -0.08 -168.22 0.05
22 1.1088 3764.99 -0.04 -168.16 -0.01
23 1.1225 3456.54 -0.08 -157.97 0.03
24 1.2013 1413.20 -0.02 -146.05 -0.02
25 1.2014 1409.75 -0.10 -146.03 0.02
26 1.2016 1406.42 -0.07 -146.09 -0.02
27 1.2046 1324.46 -0.07 -147.11 0.13
28 1.2101 1174.23 0.13 -149.85 -0.07
29 1.2805 -628.14 0.04 -218.49 0.08
30 1.2809 -636.91 0.22 -219.11 -0.07
31 1.2834 -692.75 -0.04 -222.64 -0.01
32 1.2838 -703.04 0.13 -223.37 -0.14
33 2.3269 3762.63 -0.06 -611.42 -0.00
34 4.0440 20928.74 0.07 -1189.96 -0.01
35 4.0578 20768.04 -0.06 -1172.54 0.04
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.
14UL228 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 47.022 47.031 47.013 ecceobj 0.148 0.149 0.148 incobj 5.076 5.076 5.076 qmin 39.083 39.088 39.070 qmax 54.485 54.543 54.496 amean 46.630 46.638 46.622 amin 46.230 46.246 46.228 amax 47.079 47.096 47.064 emean 0.145 0.145 0.145 emin 0.132 0.132 0.132 emax 0.158 0.159 0.159 imean 6.593 6.593 6.594 imin 6.097 6.091 6.098 imax 7.117 7.116 7.116 excite_mean 0.185 0.185 0.185 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 181.1 181.5 181.1 kozaiamp 179.9 180.0 180.0