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: 14UW228
# Created Fri Nov 22 02:10:06 2024
# Orbit generated from Bernstein formalism
# Fitting 46 observations of 49
# Arc: 4.06y
# First observation: 2013/08/09
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000031 0.033019 0.000001 -0.001515 0.029854 0.000000
# Chi-squared of fit: 13.92 DOF: 86 RMS: 0.10
# Min/Max residuals: -0.19 0.22
# Exact a, adot, b, bdot, g, gdot:
1.821964E-05 3.283946E-02 -1.498788E-06 -1.512374E-03 2.975341E-02 4.542470E-03
# Covariance matrix:
1.4791E-13 -7.1569E-14 -1.6065E-15 1.0014E-15 4.1972E-14 -3.1389E-13
-7.1569E-14 1.5112E-13 1.4826E-15 -5.3928E-15 7.7259E-14 1.3673E-12
-1.6065E-15 1.4826E-15 1.0384E-13 -5.5026E-14 -7.3557E-16 2.2059E-14
1.0014E-15 -5.3928E-15 -5.5026E-14 4.2037E-14 -3.5757E-15 -6.7893E-14
4.1972E-14 7.7259E-14 -7.3557E-16 -3.5757E-15 1.2393E-13 8.2910E-13
-3.1389E-13 1.3673E-12 2.2059E-14 -6.7893E-14 8.2910E-13 1.7366E-11
# lat0 lon0 xBary yBary zBary JD0
3.871090 28.700740 0.965377 0.021326 -0.314666 2456514.016098
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 50.37585 +/- 0.015
Argument of Peri: 60.23963 +/- 0.027
Long of Asc Node: 263.90544 +/- 0.004
Inclination: 4.57660 +/- 0.000
Eccentricity: 0.12776347 +/- 0.0001
Semi-Major Axis: 36.51422724 +/- 0.0020
Time of Perihelion: 2445233.0345 +/- 3.3
Perihelion: 31.84904288 +/- 0.0048
Aphelion: 41.17941160 +/- 0.0050
Period (y) 220.6487 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 30.15291648 +/- 0.0003
Ecliptic Y 15.41140283 +/- 0.0002
Ecliptic Z 2.26903576 +/- 0.0000
Ecliptic XDOT -0.00108336 +/- 0.0000
Ecliptic YDOT 0.00285446 +/- 0.0000
Ecliptic ZDOT -0.00011049 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.93903700 +/- 0.0003
Geocenter to KBO 33.60959274 +/- 0.0004
# Hcoef: 9.09
The following table shows the complete astrometric record for 14UW228. 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 (14UW228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.51532 01 41 00.060 +14 37 38.52 24.2r 14UW228 568 C~2SDh 2013 08 09.55803 01 41 00.019 +14 37 38.39 24.6r 14UW228 568 C~2SDh 2013 09 02.48002 01 40 04.225 +14 34 39.33 24.5r 14UW228 568 C~2SDh 2013 09 03.45599 01 40 00.793 +14 34 24.46 25.2r 14UW228 568 C~2SDh 2013 09 03.50258 01 40 00.643 +14 34 23.78 25.3r 14UW228 568 C~2SDh 2013 10 08.51708 01 37 14.386 +14 20 24.55 23.6r 14UW228 568 C~2SDh 2013 11 01.51045 01 34 59.242 +14 07 12.82 24.1r 14UW228 568 C~2SDh 2013 11 28.28696 01 32 49.665 +13 52 54.75 24.5r 14UW228 568 C~2SDh 2013 12 04.39432 01 32 27.102 +13 50 07.02 24.8r 14UW228 568 C~2SDh 2013 12 05.28909 01 32 24.058 +13 49 43.52 23.4r 14UW228 568 C~2SDh 2013 12 29.25967 01 31 33.227 +13 41 51.38 24.9r 14UW228 568 C~2SDh 2013 12 30.36406 01 31 32.409 +13 41 38.22 23.7r 14UW228 568 C~2SDh 2014 01 02.24156 01 31 30.937 +13 41 05.38 24.5r 14UW228 568 C~2SDh 2014 07 26.53369 01 48 24.104 +15 11 36.83 24.6r 14UW228 568 C~2SDh 2014 07 26.57688 01 48 24.129 +15 11 37.25 24.5r 14UW228 568 C~2SDh 2014 08 24.47423 01 47 57.947 +15 12 06.08 24.7r 14UW228 568 C~2SDh 2014 08 24.54416 01 47 57.773 +15 12 05.59 24.2r 14UW228 568 C~2SDh 2014 08 27.56009 01 47 49.963 +15 11 38.93 25.7u 14UW228 568 C~2SDh 2014 08 27.56435 01 47 49.921 +15 11 38.53 25.7u 14UW228 568 C~2SDh 2014 08 27.57287 01 47 49.904 +15 11 38.36 25.3u 14UW228 568 C~2SDh 2014 08 30.55610 01 47 41.301 +15 11 06.29 24.4r 14UW228 568 C~2SDh 2014 09 18.47464 01 46 28.829 +15 05 46.19 24.4r 14UW228 568 C~2SDh 2014 09 18.51737 01 46 28.630 +15 05 45.10 25.1r 14UW228 568 C~2SDh 2014 09 23.51567 01 46 05.039 +15 03 49.88 24.9r 14UW228 568 C~2SDh 2014 10 22.29873 01 43 28.718 +14 49 49.04 24.6r 14UW228 568 C~2SDh 2014 10 22.34444 01 43 28.457 +14 49 47.52 24.1r 14UW228 568 C~2SDh 2014 10 22.38820 01 43 28.193 +14 49 46.25 24.4r 14UW228 568 C~2SDh 2014 10 23.48652 01 43 21.930 +14 49 10.05 24.6r 14UW228 568 C~2SDh 2014 10 25.50246 01 43 10.431 +14 48 03.42 24.4r 14UW228 568 C~2SDh 2014 11 20.37417 01 40 52.886 +14 33 52.98 25.0r 14UW228 568 C~2SDh 2014 11 21.26474 01 40 48.738 +14 33 25.27 24.2r 14UW228 568 C~2SDh 2014 11 21.27445 01 40 48.671 +14 33 25.22 24.8r 14UW228 568 C~2SDh 2014 11 21.42970 01 40 47.944 +14 33 20.26 24.7r 14UW228 568 C~2SDh 2015 02 19.25614 01 40 34.416 +14 21 02.26 24.2r 14UW228 568 C~2SDh 2015 10 10.36050 01 52 07.112 +15 31 32.07 24.1r 14UW228 568 C~2SDh 2015 10 10.42692 01 52 06.741 +15 31 30.17 24.5r 14UW228 568 C~2SDh 2015 10 13.35876 01 51 50.411 +15 30 03.17 14UW228 568 C~2SDh 2015 10 13.42514 01 51 50.037 +15 30 01.25 14UW228 568 C~2SDh 2015 10 14.31603 01 51 45.023 +15 29 34.30 24.9r 14UW228 568 C~2SDh 2015 10 14.38671 01 51 44.627 +15 29 32.19 14UW228 568 C~2SDh 2015 10 14.39084 01 51 44.596 +15 29 32.33 14UW228 568 C~2SDh 2015 10 14.47894 01 51 44.118 +15 29 29.43 14UW228 568 C~2SDh 2015 10 14.54658 01 51 43.708 +15 29 27.46 14UW228 568 C~2SDh 2015 12 06.20482 01 47 13.246 +15 02 04.67 24.3r 14UW228 568 C~2SDh 2015 12 06.27161 01 47 12.978 +15 02 02.95 24.3r 14UW228 568 C~2SDh 2015 12 07.40784 01 47 08.855 +15 01 33.27 24.9w 14UW228 568 C~2SDi 2015 12 31.32052 01 46 12.069 +14 53 30.50 24.6w 14UW228 568 C~2SDi 2016 01 07.29206 01 46 07.310 +14 52 09.14 24.7w 14UW228 568 C~2SDi 2017 08 30.58559 02 09 50.636 +16 50 45.52 25.6w 14UW228 568 C~2SDi
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 -0.16 0.00 0.14
2 0.0001 -0.60 -0.07 0.09 -0.04
3 0.0656 -820.50 -0.08 125.54 0.11
4 0.0683 -872.33 -0.13 129.69 -0.07
5 0.0684 -874.61 0.16 129.84 -0.15
6 0.1643 -3429.72 0.10 224.53 -0.17
7 0.2300 -5549.13 -0.14 205.89 -0.10
8 0.3033 -7620.56 -0.08 101.40 0.13
9 0.3200 -7988.38 ( 0.46) 66.71 ( 0.04)
10 0.3224 -8038.33 0.05 61.24 -0.03
11 0.3881 -8902.42 -0.01 -103.91 0.06
12 0.3911 -8918.40 ( 0.43) -111.74 ( 0.57)
13 0.3990 -8950.54 0.16 -134.33 0.01
14 0.9610 6742.41 0.09 -392.05 -0.01
15 0.9612 6742.89 0.07 -391.79 -0.02
16 1.0403 6398.13 0.05 -230.92 -0.03
17 1.0405 6395.60 0.12 -230.49 0.00
18 1.0487 6280.31 ( 0.40) -215.47 ( 0.26)
19 1.0487 6279.60 -0.13 -215.63 0.08
20 1.0488 6279.31 -0.06 -215.70 -0.04
21 1.0569 6151.36 -0.02 -201.67 0.00
22 1.1087 5055.85 0.02 -129.27 0.14
23 1.1088 5052.77 -0.03 -129.27 -0.01
24 1.1225 4692.24 0.02 -115.65 0.06
25 1.2013 2275.15 0.11 -93.17 0.01
26 1.2014 2271.07 0.15 -93.23 -0.04
27 1.2016 2267.04 0.08 -93.05 0.15
28 1.2046 2169.27 0.19 -94.32 -0.03
29 1.2101 1989.70 -0.07 -96.79 -0.02
30 1.2809 -178.47 -0.10 -172.80 -0.12
31 1.2834 -244.63 0.08 -176.92 -0.19
32 1.2834 -245.56 -0.11 -176.62 0.15
33 1.2838 -257.19 -0.02 -177.44 -0.04
34 1.5297 -706.81 -0.01 -794.78 0.16
35 2.1680 10188.22 -0.03 -404.55 -0.03
36 2.1681 10182.52 0.02 -404.46 -0.01
37 2.1762 9930.37 -0.02 -403.61 -0.12
38 2.1763 9924.62 0.07 -403.53 -0.08
39 2.1788 9847.12 -0.19 -403.47 -0.05
40 2.1790 9841.01 -0.07 -403.45 -0.07
41 2.1790 9840.63 -0.08 -403.16 0.21
42 2.1792 9833.13 0.22 -403.47 -0.15
43 2.1794 9826.87 -0.05 -403.24 0.05
44 2.3236 5579.26 0.10 -564.62 -0.01
45 2.3238 5575.02 -0.10 -564.86 0.10
46 2.3269 5508.60 0.00 -571.46 0.08
47 2.3923 4567.39 -0.03 -730.97 0.15
48 2.4114 4473.95 -0.10 -782.53 -0.10
49 4.0577 26346.31 0.02 -1128.77 -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.
14UW228 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.701 36.708 36.695 ecceobj 0.133 0.133 0.132 incobj 4.580 4.580 4.580 qmin 30.773 30.759 30.795 qmax 42.436 42.420 42.458 amean 36.478 36.478 36.478 amin 36.194 36.191 36.185 amax 36.785 36.792 36.795 emean 0.130 0.130 0.129 emin 0.106 0.106 0.106 emax 0.154 0.154 0.154 imean 7.279 7.247 7.317 imin 4.742 4.717 4.784 imax 8.934 8.905 8.976 excite_mean 0.182 0.182 0.182 fracstop 1.000 1.000 1.000 cjmean 2.989 2.989 2.989 libcent 0 180.1 180.5 179.2 libamp 0 23.7 20.6 26.8 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 181.2 181.3 181.1 kozaiamp 180.0 180.0 179.9