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: 14UR228
# Created Mon Apr 28 01:10:10 2025
# Orbit generated from Bernstein formalism
# Fitting 50 observations of 50
# Arc: 4.06y
# First observation: 2013/08/09
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000153 0.032063 0.000013 -0.004623 0.028846 0.000000
# Chi-squared of fit: 15.66 DOF: 94 RMS: 0.10
# Min/Max residuals: -0.29 0.26
# Exact a, adot, b, bdot, g, gdot:
1.696714E-05 3.162918E-02 -2.646689E-06 -4.562034E-03 2.874932E-02 8.954400E-04
# Covariance matrix:
1.7348E-13 -7.4952E-14 -3.3714E-15 3.7480E-15 7.3215E-14 -2.7860E-13
-7.4952E-14 1.1824E-13 6.9569E-15 -1.4435E-14 2.2920E-14 9.7936E-13
-3.3714E-15 6.9569E-15 7.4689E-14 -3.6564E-14 1.4189E-15 7.4636E-14
3.7480E-15 -1.4435E-14 -3.6564E-14 3.0076E-14 -6.2354E-15 -1.6074E-13
7.3215E-14 2.2920E-14 1.4189E-15 -6.2354E-15 9.0132E-14 3.9839E-13
-2.7860E-13 9.7936E-13 7.4636E-14 -1.6074E-13 3.9839E-13 1.0861E-11
# lat0 lon0 xBary yBary zBary JD0
3.817168 28.645956 0.965075 0.021091 -0.315607 2456514.016098
# Heliocentric elements and errors
Epoch: 2456510.5000 = 2013/08/06
Mean Anomaly: 359.49456 +/- 0.052
Argument of Peri: 155.43315 +/- 0.064
Long of Asc Node: 231.97682 +/- 0.001
Inclination: 8.91937 +/- 0.000
Eccentricity: 0.10125933 +/- 0.0000
Semi-Major Axis: 39.06930008 +/- 0.0020
Time of Perihelion: 2456635.7329 +/- 12.9
Perihelion: 35.11316887 +/- 0.0023
Aphelion: 43.02543128 +/- 0.0026
Period (y) 244.2090 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 31.19804860 +/- 0.0003
Ecliptic Y 15.94575555 +/- 0.0002
Ecliptic Z 2.31558066 +/- 0.0000
Ecliptic XDOT -0.00135016 +/- 0.0000
Ecliptic YDOT 0.00269719 +/- 0.0000
Ecliptic ZDOT -0.00042767 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 35.11334889 +/- 0.0003
Geocenter to KBO 34.78343076 +/- 0.0004
# Hcoef: 8.64
The following table shows the complete astrometric record for 14UR228. 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 (14UR228) followed by the observatory code and reference code for the source of the astrometry.
2013 08 09.51532 01 40 52.239 +14 33 26.50 24.1r 14UR228 568 C~2SDg 2013 08 09.55803 01 40 52.181 +14 33 26.44 24.6r 14UR228 568 C~2SDg 2013 09 02.43301 01 39 59.343 +14 29 51.28 24.3r 14UR228 568 C~2SDg 2013 09 02.47614 01 39 59.202 +14 29 50.74 24.2r 14UR228 568 C~2SDg 2013 09 03.45211 01 39 55.928 +14 29 34.81 24.3r 14UR228 568 C~2SDg 2013 09 03.49870 01 39 55.766 +14 29 34.14 24.1r 14UR228 568 C~2SDg 2013 10 08.51317 01 37 16.567 +14 15 01.76 24.0r 14UR228 568 C~2SDg 2013 11 01.51045 01 35 06.921 +14 01 35.85 23.8r 14UR228 568 C~2SDg 2013 11 28.28696 01 33 02.650 +13 47 03.24 24.0r 14UR228 568 C~2SDg 2013 12 04.39432 01 32 41.026 +13 44 11.29 23.9r 14UR228 568 C~2SDg 2013 12 05.28909 01 32 38.097 +13 43 47.35 23.9r 14UR228 568 C~2SDg 2013 12 29.25967 01 31 49.661 +13 35 34.43 24.1r 14UR228 568 C~2SDg 2013 12 30.36406 01 31 48.901 +13 35 19.15 24.0r 14UR228 568 C~2SDg 2014 01 02.24156 01 31 47.548 +13 34 43.46 24.2r 14UR228 568 C~2SDg 2014 01 02.37231 01 31 47.509 +13 34 42.04 24.8r 14UR228 568 C~2SDg 2014 01 03.21159 01 31 47.317 +13 34 32.80 23.8r 14UR228 568 C~2SDg 2014 01 03.25404 01 31 47.305 +13 34 32.45 24.0r 14UR228 568 C~2SDg 2014 01 03.31834 01 31 47.268 +13 34 31.81 23.8r 14UR228 568 C~2SDg 2014 07 26.52975 01 48 16.271 +14 56 48.59 24.2r 14UR228 568 C~2SDg 2014 07 26.57298 01 48 16.305 +14 56 48.91 24.1r 14UR228 568 C~2SDg 2014 08 30.44562 01 47 36.568 +14 55 08.43 24.2r 14UR228 568 C~2SDg 2014 08 30.55222 01 47 36.248 +14 55 06.87 24.1r 14UR228 568 C~2SDg 2014 09 18.47076 01 46 26.862 +14 49 18.88 23.9r 14UR228 568 C~2SDg 2014 09 18.51348 01 46 26.656 +14 49 17.91 24.0r 14UR228 568 C~2SDg 2014 09 23.51179 01 46 04.029 +14 47 16.52 23.7r 14UR228 568 C~2SDg 2014 10 22.29484 01 43 33.840 +14 32 49.50 24.2r 14UR228 568 C~2SDg 2014 10 22.33958 01 43 33.605 +14 32 48.14 24.1r 14UR228 568 C~2SDg 2014 10 22.38432 01 43 33.349 +14 32 46.56 24.1r 14UR228 568 C~2SDg 2014 10 23.48145 01 43 27.318 +14 32 09.74 24.0r 14UR228 568 C~2SDg 2014 11 20.22868 01 41 04.719 +14 16 42.14 23.8r 14UR228 568 C~2SDg 2014 11 20.36911 01 41 04.047 +14 16 37.55 24.4r 14UR228 568 C~2SDg 2014 11 21.27445 01 40 59.983 +14 16 09.07 24.2r 14UR228 568 C~2SDg 2014 11 21.42970 01 40 59.279 +14 16 04.17 24.0r 14UR228 568 C~2SDg 2015 02 19.25614 01 40 49.177 +14 02 20.95 24.3r 14UR228 568 C~2SDg 2015 10 09.40974 01 52 16.980 +15 04 00.87 24.2w 14UR228 568 C~2SDg 2015 10 09.42762 01 52 16.879 +15 04 00.19 24.3w 14UR228 568 C~2SDg 2015 10 09.45292 01 52 16.752 +15 03 59.52 24.2w 14UR228 568 C~2SDg 2015 10 09.47042 01 52 16.654 +15 03 58.92 24.2w 14UR228 568 C~2SDg 2015 10 09.51628 01 52 16.409 +15 03 57.60 24.2w 14UR228 568 C~2SDg 2015 10 10.36051 01 52 11.941 +15 03 32.13 23.9r 14UR228 568 C~2SDg 2015 10 10.42693 01 52 11.576 +15 03 30.07 23.9r 14UR228 568 C~2SDg 2015 10 13.35876 01 51 55.841 +15 02 00.19 14UR228 568 C~2SDg 2015 10 13.42514 01 51 55.490 +15 01 58.09 14UR228 568 C~2SDg 2015 10 14.47894 01 51 49.772 +15 01 25.39 23.9r 14UR228 568 C~2SDg 2015 10 14.54658 01 51 49.404 +15 01 23.16 14UR228 568 C~2SDg 2015 12 07.40784 01 47 24.675 +14 32 58.09 24.3w 14UR228 568 C~2SDh 2016 09 05.56240 02 02 13.838 +15 39 42.76 24.7w 14UR228 568 C~2SDh 2016 09 06.51122 02 02 10.817 +15 39 28.18 23.9w 14UR228 568 C~2SDh 2017 08 25.56297 02 10 11.705 +16 03 25.00 24.5w 14UR228 568 C~2SDh 2017 08 30.58559 02 10 00.876 +16 02 37.87 24.2w 14UR228 568 C~2SDh
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 0.09 0.00 0.03
2 0.0001 -0.81 -0.05 0.25 0.09
3 0.0655 -793.97 -0.12 76.67 -0.05
4 0.0656 -796.07 0.01 76.90 0.05
5 0.0683 -846.16 0.06 79.25 0.03
6 0.0684 -848.60 0.11 79.47 0.11
7 0.1643 -3321.02 0.02 106.24 0.09
8 0.2300 -5371.80 -0.29 45.06 -0.04
9 0.3033 -7377.22 -0.11 -101.70 0.08
10 0.3200 -7733.95 0.24 -145.44 -0.17
11 0.3224 -7782.52 -0.29 -151.96 0.00
12 0.3881 -8621.95 0.01 -349.56 0.26
13 0.3911 -8637.92 0.13 -359.67 -0.08
14 0.3990 -8669.50 -0.09 -385.56 -0.21
15 0.3993 -8670.56 0.09 -386.67 -0.18
16 0.4016 -8676.58 0.10 -394.23 -0.14
17 0.4017 -8676.88 0.15 -394.49 -0.04
18 0.4019 -8677.62 -0.08 -394.89 0.12
19 0.9610 6519.40 -0.08 -988.98 0.05
20 0.9611 6519.97 0.01 -988.85 -0.01
21 1.0566 5945.15 0.12 -879.26 -0.05
22 1.0569 5940.26 0.03 -879.08 -0.18
23 1.1087 4875.54 0.10 -848.03 -0.04
24 1.1088 4872.40 -0.09 -847.88 0.06
25 1.1225 4522.36 0.01 -844.82 0.04
26 1.2013 2176.38 -0.13 -877.55 0.08
27 1.2014 2172.71 0.11 -877.60 0.12
28 1.2016 2168.67 -0.01 -877.74 0.07
29 1.2046 2073.72 -0.11 -880.78 0.04
30 1.2805 -193.03 0.23 -1002.18 -0.02
31 1.2809 -203.79 -0.11 -1002.94 -0.05
32 1.2834 -269.17 -0.03 -1008.21 0.05
33 1.2838 -280.48 0.04 -1009.09 0.01
34 1.5297 -714.42 0.01 -1723.96 -0.05
35 2.1654 9942.55 0.01 -1809.03 0.07
36 2.1654 9940.93 -0.10 -1809.16 -0.05
37 2.1655 9938.97 0.06 -1809.15 -0.01
38 2.1655 9937.43 -0.01 -1809.21 -0.07
39 2.1656 9933.63 0.05 -1809.21 -0.02
40 2.1680 9863.93 0.07 -1810.50 -0.03
41 2.1681 9858.25 -0.02 -1810.58 -0.07
42 2.1762 9612.72 -0.16 -1815.22 0.04
43 2.1763 9607.21 0.01 -1815.41 -0.07
44 2.1792 9517.98 -0.04 -1817.11 0.12
45 2.1794 9512.19 -0.00 -1817.33 -0.01
46 2.3269 5312.70 -0.00 -2062.95 -0.04
47 3.0747 18831.23 0.01 -2767.61 0.03
48 3.0773 18784.85 0.03 -2766.55 -0.02
49 4.0439 25890.30 0.04 -3737.70 -0.11
50 4.0577 25724.80 -0.02 -3730.60 0.17
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.
14UR228 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 39.265 39.272 39.259 ecceobj 0.106 0.106 0.106 incobj 8.914 8.914 8.914 qmin 34.336 34.344 34.341 qmax 44.046 44.052 44.071 amean 39.020 39.027 39.014 amin 38.690 38.693 38.688 amax 39.410 39.411 39.395 emean 0.092 0.092 0.091 emin 0.065 0.066 0.065 emax 0.119 0.118 0.120 imean 8.898 8.881 8.917 imin 6.242 6.250 6.210 imax 10.596 10.608 10.586 excite_mean 0.181 0.180 0.181 fracstop 1.000 1.000 1.000 cjmean 3.012 3.013 3.012 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 181.3 182.1 180.8 kozaiamp 180.0 180.0 180.0