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: 14US228
# Created Sun Dec 22 02:10:07 2024
# Orbit generated from Bernstein formalism
# Fitting 40 observations of 40
# Arc: 3.99y
# First observation: 2013/09/02
# Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
0.000117 0.021016 0.000030 0.002393 0.022856 0.000000
# Chi-squared of fit: 7.90 DOF: 74 RMS: 0.08
# Min/Max residuals: -0.25 0.18
# Exact a, adot, b, bdot, g, gdot:
1.473477E-05 2.142257E-02 1.883714E-06 2.445006E-03 2.313099E-02 7.581265E-03
# Covariance matrix:
1.9901E-13 -9.8035E-14 2.2409E-15 -5.0793E-15 8.8560E-14 -5.7395E-13
-9.8035E-14 1.5346E-13 -6.9377E-15 1.4824E-14 2.7783E-14 1.7988E-12
2.2409E-15 -6.9377E-15 8.8857E-14 -4.5105E-14 -2.8580E-15 -1.1132E-13
-5.0793E-15 1.4824E-14 -4.5105E-14 4.0086E-14 5.7612E-15 2.3697E-13
8.8560E-14 2.7783E-14 -2.8580E-15 5.7612E-15 1.2735E-13 7.4938E-13
-5.7395E-13 1.7988E-12 -1.1132E-13 2.3697E-13 7.4938E-13 2.8885E-11
# lat0 lon0 xBary yBary zBary JD0
2.979852 28.885341 0.763181 0.034440 -0.660717 2456537.941568
# Heliocentric elements and errors
Epoch: 2456530.5000 = 2013/08/26
Mean Anomaly: 56.73846 +/- 0.024
Argument of Peri: 290.54413 +/- 0.011
Long of Asc Node: 3.84137 +/- 0.002
Inclination: 7.16941 +/- 0.000
Eccentricity: 0.32354343 +/- 0.0002
Semi-Major Axis: 48.01656149 +/- 0.0098
Time of Perihelion: 2437376.4749 +/- 5.7
Perihelion: 32.48111855 +/- 0.0133
Aphelion: 63.55200444 +/- 0.0173
Period (y) 332.7322 +/- 0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.74969319 +/- 0.0006
Ecliptic Y 20.50976786 +/- 0.0003
Ecliptic Z 2.24752018 +/- 0.0000
Ecliptic XDOT -0.00045958 +/- 0.0000
Ecliptic YDOT 0.00264469 +/- 0.0000
Ecliptic ZDOT 0.00033579 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.90034906 +/- 0.0005
Geocenter to KBO 43.23204892 +/- 0.0007
# Hcoef: 7.68
The following table shows the complete astrometric record for 14US228. 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 (14US228) followed by the observatory code and reference code for the source of the astrometry.
2013 09 02.44079 01 43 02.006 +13 51 43.35 24.2r 14US228 568 C~2SDh 2013 09 02.48390 01 43 01.887 +13 51 42.95 24.2r 14US228 568 C~2SDh 2013 09 03.45987 01 42 59.102 +13 51 32.03 24.1r 14US228 568 C~2SDh 2013 09 03.50647 01 42 58.966 +13 51 31.49 23.9r 14US228 568 C~2SDh 2013 10 08.52096 01 40 45.716 +13 41 13.82 24.1r 14US228 568 C~2SDh 2013 11 01.52560 01 38 57.240 +13 31 37.76 23.6r 14US228 568 C~2SDh 2013 11 29.25439 01 37 08.179 +13 21 03.81 24.3r 14US228 568 C~2SDh 2013 12 04.40215 01 36 52.304 +13 19 24.84 24.6r 14US228 568 C~2SDh 2013 12 29.27201 01 36 03.752 +13 13 47.47 23.8r 14US228 568 C~2SDh 2013 12 29.27671 01 36 03.745 +13 13 47.54 23.6r 14US228 568 C~2SDh 2014 01 02.24937 01 36 00.793 +13 13 18.84 24.1r 14US228 568 C~2SDh 2014 01 02.30286 01 36 00.768 +13 13 18.54 24.3r 14US228 568 C~2SDh 2014 01 03.26180 01 36 00.261 +13 13 12.89 24.5r 14US228 568 C~2SDh 2014 01 03.33665 01 36 00.244 +13 13 12.38 24.0r 14US228 568 C~2SDh 2014 08 24.54028 01 47 53.533 +14 26 49.71 24.2r 14US228 568 C~2SDh 2014 08 30.44562 01 47 40.006 +14 26 06.26 24.1r 14US228 568 C~2SDh 2014 08 30.55222 01 47 39.724 +14 26 05.45 24.4r 14US228 568 C~2SDh 2014 09 18.47076 01 46 40.589 +14 22 06.55 24.2r 14US228 568 C~2SDh 2014 09 18.51348 01 46 40.431 +14 22 05.94 24.3r 14US228 568 C~2SDh 2014 09 23.51179 01 46 21.426 +14 20 40.27 24.0r 14US228 568 C~2SDh 2014 10 22.29484 01 44 16.457 +14 10 21.68 24.0r 14US228 568 C~2SDh 2014 10 22.33958 01 44 16.243 +14 10 20.64 24.0r 14US228 568 C~2SDh 2014 10 22.38432 01 44 16.044 +14 10 19.58 24.3r 14US228 568 C~2SDh 2014 10 23.48145 01 44 11.035 +14 09 53.19 24.0r 14US228 568 C~2SDh 2014 10 25.49739 01 44 01.867 +14 09 04.58 24.0r 14US228 568 C~2SDh 2014 11 20.22868 01 42 12.082 +13 58 52.82 23.9r 14US228 568 C~2SDh 2014 11 20.36911 01 42 11.531 +13 58 49.77 23.5r 14US228 568 C~2SDh 2014 11 21.26474 01 42 08.150 +13 58 29.72 24.3r 14US228 568 C~2SDh 2014 11 21.27445 01 42 08.105 +13 58 29.54 23.9r 14US228 568 C~2SDh 2015 02 19.25614 01 41 37.437 +13 51 32.42 24.5r 14US228 568 C~2SDh 2015 10 09.40974 01 49 44.522 +14 48 54.48 24.1w 14US228 568 C~2SDh 2015 10 09.42762 01 49 44.443 +14 48 54.12 24.0w 14US228 568 C~2SDh 2015 10 09.45292 01 49 44.321 +14 48 53.60 24.3w 14US228 568 C~2SDh 2015 10 09.47042 01 49 44.241 +14 48 53.15 24.3w 14US228 568 C~2SDh 2015 10 09.51628 01 49 44.040 +14 48 52.17 24.3w 14US228 568 C~2SDh 2015 10 14.54658 01 49 21.677 +14 47 01.79 14US228 568 C~2SDh 2015 12 07.40784 01 45 42.804 +14 26 48.95 24.5w 14US228 568 C~2SDh 2016 09 27.46659 01 54 57.493 +15 25 11.55 24.7w 14US228 568 C~2SDh 2017 08 25.58743 02 01 00.373 +16 03 01.95 24.3w 14US228 568 C~2SDh 2017 08 30.60899 02 00 49.868 +16 02 35.12 24.4w 14US228 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 -0.02 0.00 -0.04
2 0.0001 -1.76 0.08 0.25 -0.01
3 0.0028 -43.54 0.00 4.61 -0.05
4 0.0029 -45.58 0.02 4.81 -0.07
5 0.0988 -2079.15 0.08 127.13 -0.25
6 0.1645 -3762.25 0.05 162.29 -0.02
7 0.2404 -5475.83 -0.07 150.14 0.12
8 0.2545 -5727.86 -0.17 142.43 0.11
9 0.3226 -6511.60 0.03 87.04 -0.00
10 0.3226 -6511.67 0.04 87.14 0.11
11 0.3335 -6562.33 -0.07 76.17 -0.06
12 0.3336 -6562.78 0.07 76.03 -0.08
13 0.3363 -6571.75 -0.12 73.47 0.04
14 0.3365 -6572.16 0.17 73.09 -0.16
15 0.9749 4713.18 0.00 457.28 -0.01
16 0.9911 4513.93 -0.04 486.21 -0.03
17 0.9914 4509.81 -0.09 486.90 0.10
18 1.0432 3621.43 -0.04 568.19 -0.06
19 1.0433 3619.07 0.03 568.44 -0.00
20 1.0570 3330.39 -0.07 586.47 -0.06
21 1.1358 1412.17 0.06 656.13 0.08
22 1.1359 1408.90 -0.03 656.27 0.14
23 1.1361 1405.81 0.09 656.32 0.11
24 1.1391 1328.34 -0.04 657.72 0.07
25 1.1446 1186.43 -0.10 660.02 0.04
26 1.2150 -524.13 0.06 661.87 -0.00
27 1.2154 -532.71 0.04 661.91 0.09
28 1.2179 -585.84 0.10 660.89 -0.06
29 1.2179 -586.52 0.01 660.96 0.02
30 1.4642 -1153.24 -0.17 432.47 0.18
31 2.0998 6689.50 0.07 1128.66 -0.04
32 2.0999 6688.30 0.09 1128.73 -0.02
33 2.1000 6686.46 -0.02 1128.86 0.04
34 2.1000 6685.21 -0.07 1128.85 -0.02
35 2.1001 6682.13 -0.01 1128.96 -0.04
36 2.1139 6339.37 -0.02 1139.84 0.00
37 2.2614 2937.04 0.07 1130.72 -0.04
38 3.0692 11706.88 -0.03 1587.23 0.02
39 3.9785 17436.13 0.01 1924.73 -0.13
40 3.9922 17283.52 0.02 1951.00 -0.00
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.
14US228 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 48.361 48.389 48.333 ecceobj 0.327 0.328 0.327 incobj 7.148 7.148 7.148 qmin 31.394 31.446 30.899 qmax 65.110 65.140 65.839 amean 47.797 47.797 47.797 amin 47.156 47.146 47.181 amax 48.535 48.604 48.584 emean 0.308 0.292 0.338 emin 0.262 0.225 0.315 emax 0.343 0.342 0.355 imean 9.616 11.058 5.291 imin 6.805 7.338 4.502 imax 13.061 15.781 7.708 excite_mean 0.353 0.354 0.350 fracstop 1.000 1.000 1.000 cjmean 2.991 2.991 2.991 libcent 0 82.3 92.1 76.0 libamp 0 46.7 59.3 36.8 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 339.9 84.2 317.3 kozaiamp 34.2 180.0 31.8