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: 14UK228
# Created Mon Apr 28 01:10:10 2025
# Orbit generated from Bernstein formalism
# Fitting 47 observations of 47
# Arc: 4.06y
# First observation: 2013/08/09
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000275 0.023497 -0.000037 0.002915 0.022846 0.000000
# Chi-squared of fit: 11.97 DOF: 88 RMS: 0.09
# Min/Max residuals: -0.25 0.25
# Exact a, adot, b, bdot, g, gdot:
1.575131E-05 2.283132E-02 2.065886E-06 2.813295E-03 2.267872E-02 -5.979882E-03
# Covariance matrix:
1.4373E-13 -7.1505E-14 1.7486E-15 -5.4905E-15 5.5419E-14 -4.6540E-13
-7.1505E-14 1.3715E-13 -7.8886E-15 1.6539E-14 2.7324E-14 1.4809E-12
1.7486E-15 -7.8886E-15 6.2196E-14 -3.2736E-14 -3.2755E-15 -1.1276E-13
-5.4905E-15 1.6539E-14 -3.2736E-14 3.4453E-14 5.0739E-15 2.3375E-13
5.5419E-14 2.7324E-14 -3.2755E-15 5.0739E-15 7.1780E-14 4.8008E-13
-4.6540E-13 1.4809E-12 -1.1276E-13 2.3375E-13 4.8008E-13 2.0968E-11
# lat0 lon0 xBary yBary zBary JD0
2.909026 27.967151 0.961332 0.016654 -0.327098 2456514.003748
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 327.21817 +/- 0.009
Argument of Peri: 87.98721 +/- 0.020
Long of Asc Node: 4.78764 +/- 0.001
Inclination: 7.68625 +/- 0.000
Eccentricity: 0.35790734 +/- 0.0002
Semi-Major Axis: 58.41835771 +/- 0.0093
Time of Perihelion: 2471361.4136 +/- 1.7
Perihelion: 37.50999852 +/- 0.0130
Aphelion: 79.32671689 +/- 0.0172
Period (y) 446.5111 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 39.63422634 +/- 0.0005
Ecliptic Y 19.95965000 +/- 0.0002
Ecliptic Z 2.23792473 +/- 0.0000
Ecliptic XDOT -0.00195082 +/- 0.0000
Ecliptic YDOT 0.00208730 +/- 0.0000
Ecliptic ZDOT 0.00030270 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 44.43273380 +/- 0.0004
Geocenter to KBO 44.09420398 +/- 0.0005
# Hcoef: 7.43
The following table shows the complete astrometric record for 14UK228. 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 (14UK228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.50297 01 39 37.004 +13 27 57.06 24.4r 14UK228 568 C~2SDf 2013 08 09.54639 01 39 36.951 +13 27 57.05 23.8r 14UK228 568 C~2SDf 2013 09 02.42913 01 38 50.951 +13 25 46.76 23.7r 14UK228 568 C~2SDf 2013 09 02.47226 01 38 50.836 +13 25 46.19 23.9r 14UK228 568 C~2SDf 2013 09 03.44820 01 38 48.089 +13 25 35.40 24.0r 14UK228 568 C~2SDf 2013 09 03.49483 01 38 47.960 +13 25 34.73 23.9r 14UK228 568 C~2SDf 2013 10 08.50929 01 36 36.962 +13 15 25.84 23.9r 14UK228 568 C~2SDf 2013 10 30.50202 01 34 59.948 +13 06 50.63 23.3r 14UK228 568 C~2SDf 2013 11 01.50542 01 34 51.283 +13 06 02.72 23.9r 14UK228 568 C~2SDf 2013 12 04.39045 01 32 51.013 +12 54 16.20 23.6r 14UK228 568 C~2SDf 2013 12 05.27155 01 32 48.604 +12 54 00.77 23.7r 14UK228 568 C~2SDf 2013 12 05.27696 01 32 48.585 +12 54 00.86 24.0r 14UK228 568 C~2SDf 2013 12 05.28395 01 32 48.560 +12 54 00.68 23.6r 14UK228 568 C~2SDf 2013 12 29.25579 01 32 06.112 +12 49 04.11 23.7r 14UK228 568 C~2SDf 2013 12 30.34676 01 32 05.304 +12 48 56.48 24.4r 14UK228 568 C~2SDf 2013 12 30.35196 01 32 05.322 +12 48 56.35 23.8r 14UK228 568 C~2SDf 2014 01 02.23765 01 32 03.717 +12 48 39.69 23.7r 14UK228 568 C~2SDf 2014 01 02.28476 01 32 03.695 +12 48 39.41 24.0r 14UK228 568 C~2SDf 2014 01 02.36727 01 32 03.644 +12 48 38.97 24.3r 14UK228 568 C~2SDf 2014 01 03.20771 01 32 03.344 +12 48 34.90 23.8r 14UK228 568 C~2SDf 2014 01 03.25016 01 32 03.327 +12 48 34.80 23.9r 14UK228 568 C~2SDf 2014 01 03.31330 01 32 03.307 +12 48 34.39 24.0r 14UK228 568 C~2SDf 2014 07 26.51805 01 44 30.477 +14 04 19.74 23.9r 14UK228 568 C~2SDf 2014 07 26.56107 01 44 30.483 +14 04 20.10 23.8r 14UK228 568 C~2SDf 2014 07 26.60436 01 44 30.490 +14 04 20.47 24.1r 14UK228 568 C~2SDf 2014 08 24.45388 01 44 04.336 +14 04 48.07 24.2r 14UK228 568 C~2SDf 2014 08 24.52781 01 44 04.179 +14 04 47.67 23.8r 14UK228 568 C~2SDf 2014 08 30.43216 01 43 50.660 +14 04 04.91 24.0r 14UK228 568 C~2SDf 2014 08 30.54047 01 43 50.377 +14 04 03.87 23.9r 14UK228 568 C~2SDf 2014 09 18.45910 01 42 51.467 +14 00 07.04 24.1r 14UK228 568 C~2SDf 2014 09 18.50183 01 42 51.304 +14 00 06.36 23.8r 14UK228 568 C~2SDf 2014 09 23.50009 01 42 32.427 +13 58 41.37 23.7r 14UK228 568 C~2SDf 2014 10 22.28248 01 40 28.749 +13 48 28.44 24.0r 14UK228 568 C~2SDf 2014 10 22.32723 01 40 28.524 +13 48 27.48 23.6r 14UK228 568 C~2SDf 2014 10 22.37167 01 40 28.325 +13 48 26.42 23.4r 14UK228 568 C~2SDf 2014 10 23.46633 01 40 23.397 +13 48 00.39 23.5r 14UK228 568 C~2SDf 2014 10 25.48228 01 40 14.368 +13 47 12.50 23.8r 14UK228 568 C~2SDf 2014 11 20.21348 01 38 26.706 +13 37 11.64 23.7r 14UK228 568 C~2SDf 2014 11 20.35396 01 38 26.158 +13 37 08.77 23.9r 14UK228 568 C~2SDf 2014 11 21.25141 01 38 22.855 +13 36 49.26 24.0r 14UK228 568 C~2SDf 2014 11 21.41785 01 38 22.236 +13 36 45.88 24.0r 14UK228 568 C~2SDf 2015 02 18.26839 01 38 00.654 +13 31 02.84 23.8r 14UK228 568 C~2SDf 2015 12 07.42022 01 42 24.402 +14 09 50.97 24.1w 14UK228 568 C~2SDf 2016 11 04.38287 01 49 25.596 +14 59 54.54 24.0w 14UK228 568 C~2SDf 2016 11 04.43686 01 49 25.349 +14 59 53.26 24.0w 14UK228 568 C~2SDf 2017 08 25.58743 01 59 03.875 +15 58 00.51 23.7w 14UK228 568 C~2SDf 2017 08 30.60899 01 58 53.262 +15 57 36.03 24.0w 14UK228 568 C~2SDf
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 0.03 0.00 -0.02
2 0.0001 -0.72 -0.06 0.27 -0.01
3 0.0655 -673.51 -0.12 121.47 0.22
4 0.0656 -675.28 -0.05 121.55 0.07
5 0.0683 -716.55 -0.00 126.00 0.03
6 0.0684 -718.54 0.04 126.06 -0.16
7 0.1643 -2721.24 -0.05 252.86 -0.12
8 0.2245 -4228.83 0.17 290.08 -0.13
9 0.2300 -4364.23 0.11 291.78 -0.06
10 0.3200 -6259.92 0.19 278.92 0.01
11 0.3224 -6298.39 -0.08 277.51 -0.09
12 0.3224 -6298.61 -0.07 277.70 0.10
13 0.3225 -6299.02 -0.17 277.67 0.08
14 0.3881 -6986.05 0.09 230.24 0.10
15 0.3911 -6999.87 -0.06 227.50 -0.05
16 0.3911 -6999.67 0.20 227.28 -0.25
17 0.3990 -7027.66 0.03 220.43 -0.01
18 0.3991 -7028.07 0.03 220.29 -0.05
19 0.3994 -7028.92 -0.13 220.16 0.00
20 0.4017 -7034.51 -0.08 217.99 -0.03
21 0.4018 -7034.77 -0.03 217.99 0.05
22 0.4019 -7035.20 -0.00 217.71 -0.08
23 0.9610 4774.94 0.08 502.83 -0.09
24 0.9611 4775.15 0.02 503.14 -0.06
25 0.9613 4775.37 -0.01 503.45 -0.02
26 1.0402 4429.56 -0.01 665.01 -0.02
27 1.0405 4427.28 0.01 665.45 0.00
28 1.0566 4228.19 0.02 695.74 0.09
29 1.0569 4223.97 -0.07 696.24 -0.01
30 1.1087 3338.40 0.02 781.65 0.00
31 1.1088 3335.94 -0.03 781.87 0.03
32 1.1225 3048.90 -0.01 800.95 -0.00
33 1.2013 1147.83 0.24 876.25 -0.07
34 1.2014 1144.42 -0.01 876.54 0.13
35 1.2016 1141.34 0.03 876.59 0.09
36 1.2046 1064.99 -0.10 878.19 0.03
37 1.2101 925.04 -0.02 880.95 0.05
38 1.2805 -755.05 0.02 887.93 -0.12
39 1.2809 -763.54 -0.11 888.15 0.13
40 1.2834 -815.49 -0.07 887.42 0.08
41 1.2838 -825.12 0.07 887.54 0.25
42 1.5271 -1242.81 0.00 681.96 -0.02
43 2.3269 3180.00 -0.06 1468.01 0.13
44 3.2385 9970.22 0.01 2106.57 -0.08
45 3.2387 9966.41 -0.02 2106.63 -0.06
46 4.0440 19066.40 0.03 2486.60 -0.08
47 4.0578 18912.89 -0.01 2515.84 -0.01
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.
14UK228 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 58.740 58.764 58.715 ecceobj 0.358 0.359 0.358 incobj 7.661 7.661 7.661 qmin 36.626 36.361 36.911 qmax 80.462 80.799 80.315 amean 57.892 57.999 57.901 amin 57.068 57.049 57.072 amax 58.941 58.977 58.929 emean 0.352 0.356 0.350 emin 0.335 0.339 0.335 emax 0.368 0.372 0.364 imean 8.406 8.324 8.325 imin 7.768 7.613 7.881 imax 9.052 9.115 8.865 excite_mean 0.382 0.384 0.379 fracstop 1.000 1.000 1.000 cjmean 3.087 3.085 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 185.2 177.1 185.3 kozaiamp 180.0 180.0 180.0