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: 11JW31
# Created Wed Dec 4 02:09:10 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 58 observations of 58
# Arc: 6.23y
# First observation: 2011/04/28
# Last observation: 2017/07/21
# Chi-squared of fit: 13.51 DOF: 110 RMS: 0.09
# Min/Max residuals: -0.24 0.26
# Exact a, adot, b, bdot, g, gdot:
1.520856E-05 2.310346E-02 8.997093E-07 2.764996E-04 2.350747E-02 -1.334969E-03
# Covariance matrix:
7.8435E-14 -5.6741E-14 4.5351E-16 -1.0756E-15 4.2189E-14 -4.5116E-13
-5.6741E-14 9.5845E-14 -8.9182E-16 1.6211E-15 6.8256E-15 7.4985E-13
4.5351E-16 -8.9182E-16 4.5669E-14 -9.4662E-15 -1.0537E-16 -7.2493E-15
-1.0756E-15 1.6211E-15 -9.4662E-15 4.3185E-15 -1.1837E-15 1.5099E-14
4.2189E-14 6.8256E-15 -1.0537E-16 -1.1837E-15 2.5077E-13 -2.9378E-13
-4.5116E-13 7.4985E-13 -7.2493E-15 1.5099E-14 -2.9378E-13 6.6296E-12
# lat0 lon0 xBary yBary zBary JD0
1.747528 -82.459147 0.876126 0.015294 -0.502102 2455679.793966
# Heliocentric elements and errors
Epoch: 2455680.5000 = 2011/04/29
Mean Anomaly: 309.79015 +/- 0.048
Argument of Peri: 126.74866 +/- 0.064
Long of Asc Node: 209.16943 +/- 0.005
Inclination: 1.87294 +/- 0.000
Eccentricity: 0.09795786 +/- 0.0001
Semi-Major Axis: 45.62764196 +/- 0.0041
Time of Perihelion: 2471381.4851 +/- 19.7
Perihelion: 41.15805599 +/- 0.0052
Aphelion: 50.09722794 +/- 0.0058
Period (y) 308.2125 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 4.78204752 +/- 0.0001
Ecliptic Y -42.76503131 +/- 0.0009
Ecliptic Z 1.29731318 +/- 0.0000
Ecliptic XDOT 0.00264511 +/- 0.0000
Ecliptic YDOT 0.00051410 +/- 0.0000
Ecliptic ZDOT 0.00002748 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.05117256 +/- 0.0009
Geocenter to KBO 42.53973224 +/- 0.0009
# Hcoef: 7.91
The following table shows the complete astrometric record for 11JW31. 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 (11JW31) followed by the observatory code and reference code for the source of the astrometry.
2011 04 28.29320 18 32 24.85 -21 28 47.6 11JW31 268 C~0ljV 2011 04 28.29388 18 32 24.84 -21 28 47.6 11JW31 268 C~0ljV 2011 04 28.39916 18 32 24.62 -21 28 47.4 11JW31 268 C~0ljV 2011 05 04.35789 18 32 11.36 -21 28 44.1 11JW31 268 C~0ljV 2011 05 04.36394 18 32 11.35 -21 28 44.1 11JW31 268 C~0ljV 2011 05 04.38104 18 32 11.30 -21 28 44.1 11JW31 268 C~0ljV 2011 05 04.39888 18 32 11.25 -21 28 44.1 11JW31 268 C~0ljV 2011 05 04.40573 18 32 11.24 -21 28 44.1 11JW31 268 C~0ljV 2011 05 04.42148 18 32 11.20 -21 28 44.1 11JW31 268 C~0ljV 2011 05 27.28690 18 30 54.80 -21 28 59.0 11JW31 268 C~0ljV 2011 05 27.33105 18 30 54.62 -21 28 58.8 11JW31 268 C~0ljV 2011 05 27.38632 18 30 54.36 -21 28 59.2 11JW31 268 C~0ljV 2011 07 01.12040 18 28 10.60 -21 30 27.8 11JW31 269 C~0ljV 2011 07 01.12099 18 28 10.60 -21 30 27.7 11JW31 269 C~0ljV 2011 07 01.20571 18 28 10.16 -21 30 28.0 11JW31 269 C~0ljV 2011 07 01.20630 18 28 10.17 -21 30 28.0 11JW31 269 C~0ljV 2011 07 01.29082 18 28 09.74 -21 30 28.1 25.2R 11JW31 269 C~0ljV 2011 07 01.29141 18 28 09.74 -21 30 28.2 11JW31 269 C~0ljV 2012 04 17.38698 18 38 19.35 -21 23 13.5 11JW31 268 C~0ljV 2012 04 17.41654 18 38 19.32 -21 23 13.4 11JW31 268 C~0ljV 2012 04 18.26734 18 38 18.54 -21 23 11.9 11JW31 268 C~0ljV 2012 04 18.31485 18 38 18.51 -21 23 11.9 11JW31 268 C~0ljV 2012 04 18.31517 18 38 18.50 -21 23 11.9 11JW31 268 C~0ljV 2012 04 18.36209 18 38 18.44 -21 23 11.8 11JW31 268 C~0ljV 2012 04 18.36265 18 38 18.44 -21 23 11.8 11JW31 268 C~0ljV 2012 04 18.40499 18 38 18.40 -21 23 11.7 11JW31 268 C~0ljV 2012 04 18.40528 18 38 18.40 -21 23 11.7 11JW31 268 C~0ljV 2012 04 19.30535 18 38 17.49 -21 23 10.3 11JW31 268 C~0ljV 2012 04 19.30696 18 38 17.49 -21 23 10.3 11JW31 268 C~0ljV 2012 04 19.31725 18 38 17.47 -21 23 10.3 11JW31 268 C~0ljV 2012 04 19.33912 18 38 17.45 -21 23 10.2 11JW31 268 C~0ljV 2012 04 19.35214 18 38 17.43 -21 23 10.2 11JW31 268 C~0ljV 2012 04 19.36183 18 38 17.42 -21 23 10.2 11JW31 268 C~0ljV 2012 04 19.36529 18 38 17.42 -21 23 10.1 11JW31 268 C~0ljV 2012 04 19.39518 18 38 17.38 -21 23 10.1 11JW31 268 C~0ljV 2012 04 19.39905 18 38 17.37 -21 23 10.1 11JW31 268 C~0ljV 2012 04 19.40424 18 38 17.37 -21 23 10.1 11JW31 268 C~0ljV 2012 04 19.41581 18 38 17.36 -21 23 10.1 11JW31 268 C~0ljV 2014 06 25.38473 18 45 53.711 -21 11 48.96 11JW31 266 C~2Gt7 2014 06 25.41031 18 45 53.586 -21 11 48.95 11JW31 266 C~2Gt7 2014 06 25.45768 18 45 53.342 -21 11 49.30 11JW31 266 C~2Gt7 2014 06 25.53035 18 45 52.981 -21 11 49.66 11JW31 266 C~2Gt7 2014 06 27.35946 18 45 43.903 -21 11 58.91 11JW31 266 C~2Gt7 2014 06 27.37088 18 45 43.843 -21 11 59.02 11JW31 266 C~2Gt7 2016 06 30.38784 18 57 00.553 -20 56 22.39 11JW31 266 C~2Gt7 2016 06 30.40322 18 57 00.479 -20 56 22.56 11JW31 266 C~2Gt7 2017 07 20.25325 19 01 11.834 -20 49 43.05 23.9r 11JW31 266 C~7ued 2017 07 20.27714 19 01 11.718 -20 49 43.24 23.9r 11JW31 266 C~7ued 2017 07 20.39364 19 01 11.145 -20 49 44.16 23.9r 11JW31 266 C~7ued 2017 07 20.41604 19 01 11.036 -20 49 44.32 23.9r 11JW31 266 C~7ued 2017 07 20.53088 19 01 10.472 -20 49 45.19 23.9r 11JW31 266 C~7ued 2017 07 20.55184 19 01 10.370 -20 49 45.34 23.9r 11JW31 266 C~7ued 2017 07 21.24888 19 01 07.035 -20 49 50.61 24.1r 11JW31 266 C~7ued 2017 07 21.26989 19 01 06.933 -20 49 50.80 24.0r 11JW31 266 C~7ued 2017 07 21.39163 19 01 06.338 -20 49 51.76 24.0r 11JW31 266 C~7ued 2017 07 21.41126 19 01 06.242 -20 49 51.89 24.1r 11JW31 266 C~7ued 2017 07 21.50353 19 01 05.791 -20 49 52.58 24.1r 11JW31 266 C~7ued 2017 07 21.52175 19 01 05.703 -20 49 52.73 24.0r 11JW31 266 C~7ued
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 0.08 0.00 -0.14
2 0.0000 0.00 -0.05 0.00 -0.14
3 0.0003 0.00 -0.12 0.00 -0.02
4 0.0166 0.00 0.05 0.00 -0.06
5 0.0166 0.00 0.13 0.00 -0.06
6 0.0167 0.00 0.04 0.00 -0.07
7 0.0167 0.00 -0.02 0.00 -0.08
8 0.0167 0.00 0.09 0.00 -0.08
9 0.0168 0.00 0.10 0.00 -0.09
10 0.0794 0.00 0.20 0.00 -0.18
11 0.0795 0.00 0.26 0.00 0.09
12 0.0797 0.00 -0.18 0.00 -0.24
13 0.1747 0.00 -0.07 0.00 -0.14
14 0.1748 0.00 -0.03 0.00 -0.04
15 0.1750 0.00 -0.18 0.00 -0.05
16 0.1750 0.00 0.02 0.00 -0.05
17 0.1752 0.00 0.00 0.00 0.13
18 0.1752 0.00 0.05 0.00 0.03
19 0.9722 0.00 -0.10 0.00 0.01
20 0.9723 0.00 -0.12 0.00 0.06
21 0.9746 0.00 -0.12 0.00 0.09
22 0.9747 0.00 0.17 0.00 0.02
23 0.9747 0.00 0.03 0.00 0.02
24 0.9749 0.00 -0.13 0.00 0.05
25 0.9749 0.00 -0.12 0.00 0.05
26 0.9750 0.00 -0.05 0.00 0.08
27 0.9750 0.00 -0.04 0.00 0.08
28 0.9774 0.00 0.07 0.00 0.03
29 0.9775 0.00 0.10 0.00 0.03
30 0.9775 0.00 -0.03 0.00 0.02
31 0.9775 0.00 0.05 0.00 0.09
32 0.9776 0.00 -0.02 0.00 0.07
33 0.9776 0.00 -0.01 0.00 0.05
34 0.9776 0.00 0.05 0.00 0.15
35 0.9777 0.00 -0.03 0.00 0.10
36 0.9777 0.00 -0.11 0.00 0.10
37 0.9777 0.00 -0.02 0.00 0.09
38 0.9777 0.00 0.03 0.00 0.07
39 3.1597 0.00 -0.04 0.00 -0.02
40 3.1598 0.00 0.02 0.00 0.12
41 3.1599 0.00 -0.05 0.00 0.01
42 3.1601 0.00 0.04 0.00 0.01
43 3.1651 0.00 0.08 0.00 0.06
44 3.1652 0.00 0.04 0.00 0.01
45 5.1748 0.00 0.09 0.00 0.17
46 5.1748 0.00 0.15 0.00 0.10
47 6.2285 0.00 -0.01 0.00 -0.07
48 6.2286 0.00 0.00 0.00 -0.07
49 6.2289 0.00 -0.01 0.00 -0.08
50 6.2289 0.00 0.00 0.00 -0.07
51 6.2293 0.00 -0.01 0.00 -0.08
52 6.2293 0.00 -0.00 0.00 -0.08
53 6.2312 0.00 -0.02 0.00 0.01
54 6.2313 0.00 -0.02 0.00 -0.02
55 6.2316 0.00 -0.02 0.00 -0.02
56 6.2317 0.00 -0.02 0.00 -0.00
57 6.2319 0.00 -0.03 0.00 0.00
58 6.2320 0.00 -0.02 0.00 -0.02
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.
11JW31 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.430 45.430 45.430 ecceobj 0.097 0.097 0.097 incobj 1.876 1.876 1.876 qmin 40.503 40.529 40.521 qmax 51.058 51.078 51.063 amean 45.643 45.643 45.643 amin 45.270 45.273 45.267 amax 46.048 46.048 46.049 emean 0.096 0.096 0.096 emin 0.083 0.082 0.083 emax 0.109 0.109 0.109 imean 3.157 3.157 3.157 imin 2.644 2.644 2.644 imax 3.590 3.589 3.591 excite_mean 0.111 0.111 0.111 fracstop 1.000 1.000 1.000 cjmean 3.106 3.106 3.106 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 179.1 179.0 179.2 kozaiamp 180.0 180.0 180.0