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: 14UD228
# Created Sun Apr 27 01:10:10 2025
# Orbit generated from Bernstein formalism
# Fitting 34 observations of 34
# Arc: 4.06y
# First observation: 2013/08/09
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000007 0.010236 -0.000003 -0.000975 0.015362 0.000000
# Chi-squared of fit: 7.62 DOF: 62 RMS: 0.08
# Min/Max residuals: -0.24 0.23
# Exact a, adot, b, bdot, g, gdot:
1.101987E-05 1.027933E-02 -1.189288E-06 -9.827755E-04 1.539994E-02 3.128004E-03
# Covariance matrix:
1.7796E-13 -5.9730E-14 -2.0561E-15 1.0329E-15 7.7237E-14 -3.2848E-13
-5.9730E-14 1.2570E-13 3.9359E-15 -9.3701E-15 5.1598E-14 2.8015E-12
-2.0561E-15 3.9359E-15 8.9380E-14 -4.6367E-14 1.1700E-15 1.3551E-13
1.0329E-15 -9.3701E-15 -4.6367E-14 4.6900E-14 -6.6360E-15 -3.2957E-13
7.7237E-14 5.1598E-14 1.1700E-15 -6.6360E-15 1.1922E-13 1.9644E-12
-3.2848E-13 2.8015E-12 1.3551E-13 -3.2957E-13 1.9644E-12 9.8500E-11
# lat0 lon0 xBary yBary zBary JD0
4.520929 27.151184 0.956617 0.026914 -0.339990 2456513.995978
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 109.69471 +/- 0.135
Argument of Peri: 0.42057 +/- 0.099
Long of Asc Node: 246.29896 +/- 0.006
Inclination: 6.97725 +/- 0.001
Eccentricity: 0.32741151 +/- 0.0004
Semi-Major Axis: 54.94903581 +/- 0.0199
Time of Perihelion: 2411176.7429 +/- 50.1
Perihelion: 36.95808916 +/- 0.0278
Aphelion: 72.93998246 +/- 0.0359
Period (y) 407.3318 +/- 0.22
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 58.33963000 +/- 0.0013
Ecliptic Y 28.84796171 +/- 0.0006
Ecliptic Z 5.11837704 +/- 0.0001
Ecliptic XDOT -0.00033464 +/- 0.0000
Ecliptic YDOT 0.00188450 +/- 0.0000
Ecliptic ZDOT -0.00013020 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 65.28334479 +/- 0.0012
Geocenter to KBO 64.93532408 +/- 0.0015
# Hcoef: 6.06
The following table shows the complete astrometric record for 14UD228. 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 (14UD228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.49520 01 34 04.332 +14 40 17.18 24.3r 14UD228 568 C~2SDe 2013 08 09.53863 01 34 04.306 +14 40 17.32 23.9r 14UD228 568 C~2SDe 2013 09 02.41327 01 33 27.743 +14 38 06.58 24.4r 14UD228 568 C~2SDe 2013 09 02.45665 01 33 27.658 +14 38 06.24 24.1r 14UD228 568 C~2SDe 2013 09 03.43268 01 33 25.584 +14 37 57.08 24.3r 14UD228 568 C~2SDe 2013 09 03.47930 01 33 25.477 +14 37 56.62 24.2r 14UD228 568 C~2SDe 2013 11 28.28696 01 29 22.961 +14 14 07.71 24.3r 14UD228 568 C~2SDe 2013 12 04.39432 01 29 10.099 +14 12 30.10 23.8r 14UD228 568 C~2SDe 2013 12 05.28909 01 29 08.373 +14 12 16.19 24.1r 14UD228 568 C~2SDe 2013 12 29.25967 01 28 37.432 +14 07 26.60 24.1r 14UD228 568 C~2SDe 2013 12 30.36406 01 28 36.789 +14 07 17.44 24.7r 14UD228 568 C~2SDe 2014 01 02.24156 01 28 35.479 +14 06 55.12 24.1r 14UD228 568 C~2SDe 2014 01 02.28865 01 28 35.454 +14 06 54.51 24.0r 14UD228 568 C~2SDe 2014 01 03.21159 01 28 35.138 +14 06 48.26 24.5r 14UD228 568 C~2SDe 2014 01 03.25404 01 28 35.129 +14 06 47.90 24.3r 14UD228 568 C~2SDe 2014 08 23.54865 01 36 07.924 +14 49 10.70 24.3r 14UD228 568 C~2SDe 2014 08 23.59554 01 36 07.847 +14 49 10.17 24.0r 14UD228 568 C~2SDe 2014 08 27.44097 01 36 01.326 +14 48 45.23 24.1r 14UD228 568 C~2SDe 2014 08 27.53681 01 36 01.151 +14 48 44.50 24.1r 14UD228 568 C~2SDe 2014 09 18.37151 01 35 11.849 +14 44 57.72 24.5r 14UD228 568 C~2SDe 2014 09 23.45425 01 34 57.919 +14 43 46.96 24.1r 14UD228 568 C~2SDe 2014 10 22.27410 01 33 30.023 +14 35 35.73 24.4r 14UD228 568 C~2SDe 2014 10 22.31909 01 33 29.873 +14 35 34.89 24.1r 14UD228 568 C~2SDe 2014 10 22.36391 01 33 29.728 +14 35 34.07 24.1r 14UD228 568 C~2SDe 2014 10 23.45625 01 33 26.287 +14 35 13.48 24.3r 14UD228 568 C~2SDe 2014 10 25.47218 01 33 19.967 +14 34 35.41 24.2r 14UD228 568 C~2SDe 2014 11 20.20326 01 32 05.037 +14 26 33.06 24.6r 14UD228 568 C~2SDe 2014 11 20.34387 01 32 04.680 +14 26 30.38 24.1r 14UD228 568 C~2SDe 2014 11 21.24351 01 32 02.373 +14 26 14.45 24.0r 14UD228 568 C~2SDe 2015 02 19.23532 01 31 44.875 +14 17 39.53 24.2r 14UD228 568 C~2SDe 2016 01 03.25961 01 33 15.807 +14 26 40.00 23.8r 14UD228 568 C~2SDe 2016 01 03.32552 01 33 15.770 +14 26 39.72 24.0r 14UD228 568 C~2SDe 2017 08 25.60644 01 43 03.142 +15 17 15.63 24.1w 14UD228 568 C~2SDe 2017 08 30.62762 01 42 54.390 +15 16 41.39 24.1w 14UD228 568 C~2SDe
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 -0.10 0.00 0.04
2 0.0001 -0.30 0.19 0.27 0.14
3 0.0655 -541.93 -0.02 72.91 -0.07
4 0.0656 -543.20 0.11 73.05 -0.06
5 0.0683 -574.56 0.11 75.56 -0.02
6 0.0684 -576.18 0.04 75.70 -0.01
7 0.3033 -4378.38 -0.14 45.91 0.06
8 0.3201 -4588.36 -0.02 24.59 0.23
9 0.3225 -4616.84 -0.00 20.98 -0.04
10 0.3881 -5142.47 -0.00 -80.96 -0.04
11 0.3912 -5154.57 0.06 -85.99 0.06
12 0.3990 -5180.57 0.10 -99.64 -0.03
13 0.3992 -5181.13 -0.07 -100.07 -0.24
14 0.4017 -5187.72 -0.05 -104.17 0.06
15 0.4018 -5187.98 0.01 -104.46 -0.04
16 1.0378 1863.95 -0.05 -157.30 0.11
17 1.0379 1862.72 -0.13 -157.38 -0.13
18 1.0484 1765.55 -0.00 -146.21 -0.00
19 1.0487 1762.92 0.00 -145.97 -0.06
20 1.1085 1014.35 -0.01 -96.68 -0.15
21 1.1224 800.39 -0.05 -88.83 0.05
22 1.2013 -566.42 0.05 -79.57 0.01
23 1.2014 -568.75 -0.04 -79.56 0.04
24 1.2016 -571.01 -0.06 -79.55 0.07
25 1.2045 -625.03 -0.09 -80.40 0.04
26 1.2101 -724.35 -0.05 -82.19 0.05
27 1.2805 -1913.62 -0.07 -131.20 0.12
28 1.2809 -1919.42 0.04 -131.79 -0.11
29 1.2834 -1956.45 -0.03 -134.27 -0.02
30 1.5297 -2382.45 0.15 -519.47 0.01
31 2.4005 -954.88 0.06 -502.34 -0.19
32 2.4006 -955.48 0.05 -502.40 0.04
33 4.0441 8085.82 0.00 -751.67 0.04
34 4.0579 7955.10 0.02 -738.50 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.
14UD228 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 55.264 55.322 55.205 ecceobj 0.326 0.327 0.324 incobj 6.974 6.975 6.975 qmin 35.962 35.959 36.051 qmax 74.488 74.784 74.452 amean 54.712 54.888 54.788 amin 53.987 54.301 54.177 amax 55.596 55.698 55.577 emean 0.328 0.331 0.328 emin 0.314 0.318 0.317 emax 0.341 0.343 0.340 imean 8.160 8.201 8.175 imin 7.576 7.599 7.620 imax 8.772 8.884 8.545 excite_mean 0.357 0.360 0.358 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.072 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 172.3 171.1 168.0 kozaiamp 180.0 180.0 180.0