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: 11JY31
# Created Wed Dec 4 02:09:10 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 71 observations of 71
# Arc: 6.23y
# First observation: 2011/04/28
# Last observation: 2017/07/21
# Chi-squared of fit: 35.98 DOF: 136 RMS: 0.13
# Min/Max residuals: -0.26 0.43
# Exact a, adot, b, bdot, g, gdot:
1.460282E-05 2.303357E-02 6.846009E-07 7.250974E-04 2.365909E-02 -6.881712E-04
# Covariance matrix:
6.0877E-14 -2.5717E-14 3.7495E-17 -1.1435E-15 4.8068E-14 -2.1638E-13
-2.5717E-14 8.1831E-14 -1.3023E-15 3.1329E-15 2.7677E-14 6.4384E-13
3.7495E-17 -1.3023E-15 3.5473E-14 -7.1473E-15 -1.1733E-15 -9.9262E-15
-1.1435E-15 3.1329E-15 -7.1473E-15 3.9198E-15 7.9157E-17 2.7031E-14
4.8068E-14 2.7677E-14 -1.1733E-15 7.9157E-17 1.5222E-13 6.4745E-14
-2.1638E-13 6.4384E-13 -9.9262E-15 2.7031E-14 6.4745E-14 5.4993E-12
# lat0 lon0 xBary yBary zBary JD0
1.863015 -82.451216 0.876190 0.016302 -0.501959 2455679.794646
# Heliocentric elements and errors
Epoch: 2455680.5000 = 2011/04/29
Mean Anomaly: 301.36353 +/- 0.062
Argument of Peri: 109.61552 +/- 0.075
Long of Asc Node: 231.49476 +/- 0.002
Inclination: 2.60756 +/- 0.000
Eccentricity: 0.05965380 +/- 0.0001
Semi-Major Axis: 44.02567603 +/- 0.0029
Time of Perihelion: 2473059.4205 +/- 20.3
Perihelion: 41.39937712 +/- 0.0046
Aphelion: 46.65197494 +/- 0.0048
Period (y) 292.1240 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 4.75171154 +/- 0.0001
Ecliptic Y -42.49149329 +/- 0.0007
Ecliptic Z 1.37414313 +/- 0.0000
Ecliptic XDOT 0.00262966 +/- 0.0000
Ecliptic YDOT 0.00043771 +/- 0.0000
Ecliptic ZDOT 0.00008131 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.77846363 +/- 0.0007
Geocenter to KBO 42.26710728 +/- 0.0007
# Hcoef: 7.44
The following table shows the complete astrometric record for 11JY31. 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 (11JY31) followed by the observatory code and reference code for the source of the astrometry.
2011 04 28.29388 18 32 25.22 -21 21 50.9 11JY31 268 C~0mPC 2011 04 28.39916 18 32 25.00 -21 21 50.9 11JY31 268 C~0mPC 2011 04 30.29847 18 32 21.06 -21 21 48.6 11JY31 268 C~0mPC 2011 04 30.29915 18 32 21.06 -21 21 48.7 11JY31 268 C~0mPC 2011 05 04.35789 18 32 11.59 -21 21 45.2 11JY31 268 C~0mPC 2011 05 04.38104 18 32 11.52 -21 21 45.1 11JY31 268 C~0mPC 2011 05 04.39888 18 32 11.48 -21 21 45.2 11JY31 268 C~0mPC 2011 05 04.40573 18 32 11.46 -21 21 45.1 11JY31 268 C~0mPC 2011 05 04.42148 18 32 11.43 -21 21 45.2 11JY31 268 C~0mPC 2011 05 27.28690 18 30 54.35 -21 21 51.6 11JY31 268 C~0mPC 2011 05 27.28768 18 30 54.35 -21 21 51.6 11JY31 268 C~0mPC 2011 05 29.40904 18 30 45.50 -21 21 54.6 11JY31 266 C~0mPC 2011 05 29.54954 18 30 44.90 -21 21 54.8 11JY31 266 C~0mPC 2011 05 30.41081 18 30 41.24 -21 21 55.9 11JY31 266 C~0mPC 2011 05 30.47860 18 30 40.95 -21 21 56.0 11JY31 266 C~0mPC 2011 05 30.54565 18 30 40.65 -21 21 56.2 11JY31 266 C~0mPC 2011 05 31.22732 18 30 37.71 -21 21 57.0 11JY31 268 C~0mPC 2011 05 31.22801 18 30 37.71 -21 21 57.0 11JY31 268 C~0mPC 2011 05 31.29595 18 30 37.42 -21 21 57.1 11JY31 268 C~0mPC 2011 05 31.29705 18 30 37.41 -21 21 57.1 11JY31 268 C~0mPC 2011 05 31.37286 18 30 37.07 -21 21 57.3 11JY31 268 C~0mPC 2011 05 31.37355 18 30 37.07 -21 21 57.3 11JY31 268 C~0mPC 2011 05 31.53716 18 30 36.36 -21 21 57.6 11JY31 266 C~0mPC 2011 06 01.43469 18 30 32.44 -21 21 58.7 11JY31 266 C~0mPC 2011 06 01.51361 18 30 32.11 -21 21 59.1 11JY31 266 C~0mPC 2011 07 01.12040 18 28 08.92 -21 23 10.8 11JY31 269 C~0mPC 2011 07 01.12099 18 28 08.92 -21 23 10.8 11JY31 269 C~0mPC 2011 07 01.20571 18 28 08.48 -21 23 11.0 11JY31 269 C~0mPC 2011 07 01.20630 18 28 08.49 -21 23 11.2 11JY31 269 C~0mPC 2011 07 01.29082 18 28 08.04 -21 23 11.3 24.8R 11JY31 269 C~0mPC 2011 07 01.29141 18 28 08.05 -21 23 11.4 11JY31 269 C~0mPC 2011 07 02.32100 18 28 02.88 -21 23 14.6 11JY31 266 C~0mPC 2011 07 02.37545 18 28 02.61 -21 23 14.8 11JY31 266 C~0mPC 2012 04 17.34199 18 38 18.00 -21 14 50.4 11JY31 268 C~0mPC 2012 04 17.38720 18 38 17.95 -21 14 50.2 11JY31 268 C~0mPC 2012 04 17.41592 18 38 17.93 -21 14 50.2 11JY31 268 C~0mPC 2012 04 18.26755 18 38 17.13 -21 14 48.3 11JY31 268 C~0mPC 2012 04 18.31485 18 38 17.08 -21 14 48.3 11JY31 268 C~0mPC 2012 04 18.36265 18 38 17.03 -21 14 48.2 11JY31 268 C~0mPC 2012 04 18.40528 18 38 16.98 -21 14 48.1 11JY31 268 C~0mPC 2012 04 19.30535 18 38 16.05 -21 14 46.3 11JY31 268 C~0mPC 2012 04 19.35214 18 38 16.00 -21 14 46.1 11JY31 268 C~0mPC 2012 04 19.39905 18 38 15.94 -21 14 46.1 11JY31 268 C~0mPC 2012 09 18.64857 18 29 31.07 -21 21 20.7 24.8R 11JY31 250 S~0sHv 2012 09 18.65704 18 29 31.07 -21 21 20.7 11JY31 250 S~0sHv 2012 09 18.70856 18 29 31.06 -21 21 20.9 11JY31 250 S~0sHv 2012 09 18.71703 18 29 31.06 -21 21 20.9 11JY31 250 S~0sHv 2012 09 18.78152 18 29 31.06 -21 21 21.1 11JY31 250 S~0sHv 2012 09 18.78999 18 29 31.06 -21 21 21.0 11JY31 250 S~0sHv 2012 09 18.84353 18 29 31.05 -21 21 21.2 11JY31 250 S~0sHv 2012 09 18.85200 18 29 31.05 -21 21 21.2 11JY31 250 S~0sHv 2014 06 25.35404 18 45 45.278 -20 59 58.97 11JY31 266 C~2Gt7 2014 06 25.40771 18 45 45.007 -20 59 59.27 11JY31 266 C~2Gt7 2014 06 25.42538 18 45 44.919 -20 59 59.38 11JY31 266 C~2Gt7 2014 06 25.43398 18 45 44.874 -20 59 59.45 11JY31 266 C~2Gt7 2014 06 25.53073 18 45 44.385 -20 59 59.85 11JY31 266 C~2Gt7 2014 06 25.54838 18 45 44.290 -20 59 59.95 11JY31 266 C~2Gt7 2016 06 30.39446 18 56 44.372 -20 41 35.51 11JY31 266 C~2Gt7 2016 06 30.40165 18 56 44.333 -20 41 35.43 11JY31 266 C~2Gt7 2017 07 20.25325 19 00 50.845 -20 33 26.50 23.4r 11JY31 266 C~7ued 2017 07 20.39364 19 00 50.153 -20 33 27.58 23.4r 11JY31 266 C~7ued 2017 07 20.50567 19 00 49.606 -20 33 28.37 23.1r 11JY31 266 C~7ued 2017 07 20.53088 19 00 49.478 -20 33 28.59 23.4r 11JY31 266 C~7ued 2017 07 20.53925 19 00 49.442 -20 33 28.62 23.1r 11JY31 266 C~7ued 2017 07 20.55184 19 00 49.380 -20 33 28.71 23.1r 11JY31 266 C~7ued 2017 07 21.24888 19 00 46.029 -20 33 34.00 23.5r 11JY31 266 C~7ued 2017 07 21.26989 19 00 45.926 -20 33 34.16 23.5r 11JY31 266 C~7ued 2017 07 21.39163 19 00 45.330 -20 33 35.09 23.5r 11JY31 266 C~7ued 2017 07 21.41126 19 00 45.234 -20 33 35.25 23.5r 11JY31 266 C~7ued 2017 07 21.50353 19 00 44.782 -20 33 35.92 23.5r 11JY31 266 C~7ued 2017 07 21.52175 19 00 44.693 -20 33 36.05 23.5r 11JY31 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 0.18 0.00 -0.03
2 0.0003 0.00 0.13 0.00 -0.16
3 0.0055 0.00 -0.05 0.00 -0.02
4 0.0055 0.00 -0.03 0.00 -0.12
5 0.0166 0.00 0.05 0.00 -0.13
6 0.0167 0.00 -0.10 0.00 -0.04
7 0.0167 0.00 -0.00 0.00 -0.16
8 0.0167 0.00 -0.04 0.00 -0.06
9 0.0168 0.00 0.12 0.00 -0.18
10 0.0794 0.00 -0.14 0.00 0.00
11 0.0794 0.00 -0.09 0.00 0.01
12 0.0852 0.00 -0.04 0.00 -0.14
13 0.0856 0.00 0.07 0.00 -0.13
14 0.0879 0.00 0.08 0.00 -0.04
15 0.0881 0.00 0.17 0.00 -0.03
16 0.0883 0.00 0.08 0.00 -0.13
17 0.0902 0.00 -0.06 0.00 -0.10
18 0.0902 0.00 -0.02 0.00 -0.10
19 0.0904 0.00 0.13 0.00 -0.10
20 0.0904 0.00 0.05 0.00 -0.10
21 0.0906 0.00 -0.03 0.00 -0.20
22 0.0906 0.00 0.01 0.00 -0.20
23 0.0910 0.00 -0.07 0.00 -0.07
24 0.0935 0.00 -0.26 0.00 0.20
25 0.0937 0.00 0.09 0.00 -0.07
26 0.1747 0.00 -0.00 0.00 -0.07
27 0.1747 0.00 0.05 0.00 -0.07
28 0.1750 0.00 -0.05 0.00 -0.00
29 0.1750 0.00 0.14 0.00 -0.20
30 0.1752 0.00 -0.13 0.00 -0.05
31 0.1752 0.00 0.07 0.00 -0.15
32 0.1780 0.00 -0.01 0.00 0.05
33 0.1782 0.00 0.11 0.00 0.03
34 0.9721 0.00 0.03 0.00 -0.11
35 0.9722 0.00 -0.05 0.00 -0.00
36 0.9723 0.00 0.07 0.00 -0.07
37 0.9746 0.00 -0.01 0.00 -0.02
38 0.9747 0.00 -0.02 0.00 -0.11
39 0.9749 0.00 0.00 0.00 -0.10
40 0.9750 0.00 -0.06 0.00 -0.09
41 0.9774 0.00 -0.03 0.00 -0.14
42 0.9776 0.00 0.04 0.00 -0.02
43 0.9777 0.00 -0.04 0.00 -0.11
44 1.3945 0.00 -0.04 0.00 0.40
45 1.3946 0.00 -0.03 0.00 0.42
46 1.3947 0.00 -0.10 0.00 0.34
47 1.3947 0.00 -0.09 0.00 0.36
48 1.3949 0.00 -0.00 0.00 0.31
49 1.3949 0.00 0.01 0.00 0.43
50 1.3951 0.00 -0.07 0.00 0.36
51 1.3951 0.00 -0.06 0.00 0.38
52 3.1596 0.00 -0.04 0.00 0.06
53 3.1598 0.00 -0.02 0.00 0.02
54 3.1598 0.00 0.00 0.00 -0.00
55 3.1599 0.00 -0.02 0.00 -0.03
56 3.1601 0.00 0.01 0.00 0.02
57 3.1602 0.00 -0.07 0.00 0.00
58 5.1748 0.00 0.21 0.00 0.08
59 5.1748 0.00 0.17 0.00 0.21
60 6.2285 0.00 -0.02 0.00 -0.09
61 6.2289 0.00 -0.03 0.00 -0.08
62 6.2292 0.00 0.04 0.00 -0.05
63 6.2293 0.00 -0.02 0.00 -0.09
64 6.2293 0.00 0.05 0.00 -0.06
65 6.2293 0.00 0.05 0.00 -0.06
66 6.2312 0.00 -0.04 0.00 -0.10
67 6.2313 0.00 -0.05 0.00 -0.10
68 6.2316 0.00 -0.04 0.00 -0.09
69 6.2317 0.00 -0.03 0.00 -0.10
70 6.2319 0.00 -0.03 0.00 -0.10
71 6.2320 0.00 -0.04 0.00 -0.09
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.
11JY31 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.840 43.840 43.841 ecceobj 0.059 0.059 0.059 incobj 2.613 2.613 2.613 qmin 40.681 40.663 40.680 qmax 47.639 47.651 47.635 amean 44.049 44.048 44.049 amin 43.706 43.701 43.713 amax 44.422 44.417 44.424 emean 0.059 0.059 0.059 emin 0.044 0.044 0.043 emax 0.073 0.074 0.073 imean 4.231 4.231 4.231 imin 3.588 3.588 3.588 imax 4.845 4.844 4.843 excite_mean 0.094 0.094 0.094 fracstop 1.000 1.000 1.000 cjmean 3.091 3.091 3.091 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 178.9 179.0 178.9 kozaiamp 179.9 180.0 179.9