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: 11JA32
# Created Mon Apr 28 01:09:18 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 31 observations of 31
# Arc: 6.22y
# First observation: 2011/05/02
# Last observation: 2017/07/21
# Chi-squared of fit: 8.38 DOF: 56 RMS: 0.09
# Min/Max residuals: -0.25 0.24
# Exact a, adot, b, bdot, g, gdot:
1.573023E-05 2.295590E-02 4.366396E-07 9.617866E-04 2.337094E-02 -2.175530E-03
# Covariance matrix:
8.7217E-14 -4.8800E-14 4.8218E-16 -1.9225E-15 6.5189E-15 -3.0526E-13
-4.8800E-14 2.0500E-13 -2.4078E-15 7.0588E-15 3.0637E-13 1.2738E-12
4.8218E-16 -2.4078E-15 7.7962E-14 -1.5110E-14 -2.5403E-15 -1.7272E-14
-1.9225E-15 7.0588E-15 -1.5110E-14 7.5271E-15 -1.0701E-15 6.3333E-14
6.5189E-15 3.0637E-13 -2.5403E-15 -1.0701E-15 1.4591E-12 5.0440E-13
-3.0526E-13 1.2738E-12 -1.7272E-14 6.3333E-14 5.0440E-13 1.0389E-11
# lat0 lon0 xBary yBary zBary JD0
2.125193 -82.333299 0.842217 0.020699 -0.558532 2455683.784186
# Heliocentric elements and errors
Epoch: 2455684.5000 = 2011/05/03
Mean Anomaly: 308.03844 +/- 0.045
Argument of Peri: 106.06783 +/- 0.063
Long of Asc Node: 235.99907 +/- 0.003
Inclination: 3.22363 +/- 0.000
Eccentricity: 0.13532006 +/- 0.0001
Semi-Major Axis: 46.64585103 +/- 0.0097
Time of Perihelion: 2472480.1818 +/- 34.2
Perihelion: 40.33373171 +/- 0.0108
Aphelion: 52.95797034 +/- 0.0130
Period (y) 318.5868 +/- 0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 4.94900695 +/- 0.0003
Ecliptic Y -43.04268488 +/- 0.0022
Ecliptic Z 1.58675027 +/- 0.0001
Ecliptic XDOT 0.00262872 +/- 0.0000
Ecliptic YDOT 0.00062125 +/- 0.0000
Ecliptic ZDOT 0.00010318 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.35539013 +/- 0.0022
Geocenter to KBO 42.78826532 +/- 0.0022
# Hcoef: 8.95
The following table shows the complete astrometric record for 11JA32. 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 (11JA32) followed by the observatory code and reference code for the source of the astrometry.
2011 05 02.28342 18 32 51.70 -21 05 44.6 11JA32 268 C~0pNL 2011 05 02.28856 18 32 51.69 -21 05 44.6 11JA32 268 C~0pNL 2011 05 02.30851 18 32 51.65 -21 05 44.5 11JA32 268 C~0pNL 2011 05 02.32221 18 32 51.62 -21 05 44.6 11JA32 268 C~0pNL 2011 05 02.33338 18 32 51.59 -21 05 44.4 11JA32 268 C~0pNL 2011 05 02.35124 18 32 51.54 -21 05 44.5 11JA32 268 C~0pNL 2011 05 02.35411 18 32 51.53 -21 05 44.5 11JA32 268 C~0pNL 2011 05 03.28524 18 32 49.38 -21 05 43.5 11JA32 268 C~0pNL 2011 05 03.29159 18 32 49.37 -21 05 43.5 11JA32 268 C~0pNL 2011 05 03.30873 18 32 49.34 -21 05 43.4 11JA32 268 C~0pNL 2011 05 03.32834 18 32 49.28 -21 05 43.3 11JA32 268 C~0pNL 2011 05 03.34419 18 32 49.24 -21 05 43.3 11JA32 268 C~0pNL 2011 05 03.36010 18 32 49.20 -21 05 43.3 11JA32 268 C~0pNL 2011 05 03.36568 18 32 49.18 -21 05 43.4 11JA32 268 C~0pNL 2011 05 27.25954 18 31 31.26 -21 05 40.4 11JA32 268 C~0pNL 2011 05 28.29575 18 31 27.04 -21 05 41.2 25.8R 11JA32 268 C~0pNL 2012 04 21.32330 18 38 46.31 -20 57 52.9 11JA32 268 C~0pNL 2012 04 21.37086 18 38 46.23 -20 57 52.8 11JA32 268 C~0pNL 2012 04 21.40842 18 38 46.18 -20 57 52.7 11JA32 268 C~0pNL 2014 06 25.39079 18 46 20.342 -20 40 57.45 11JA32 266 C~2Gt7 2014 06 25.45257 18 46 20.032 -20 40 57.78 11JA32 266 C~2Gt7 2014 06 25.50827 18 46 19.760 -20 40 57.94 11JA32 266 C~2Gt7 2014 06 25.54018 18 46 19.591 -20 40 58.01 11JA32 266 C~2Gt7 2016 06 05.50446 18 59 18.002 -20 18 31.86 11JA32 266 C~2Gt7 2016 06 05.54180 18 59 17.850 -20 18 31.87 11JA32 266 C~2Gt7 2017 07 20.27714 19 01 31.565 -20 11 27.21 24.9r 11JA32 266 C~7ued 2017 07 20.41604 19 01 30.887 -20 11 28.28 24.9r 11JA32 266 C~7ued 2017 07 20.55184 19 01 30.225 -20 11 29.27 24.9r 11JA32 266 C~7ued 2017 07 21.26989 19 01 26.811 -20 11 34.57 25.1r 11JA32 266 C~7ued 2017 07 21.38744 19 01 26.240 -20 11 35.48 25.1r 11JA32 266 C~7ued 2017 07 21.51474 19 01 25.622 -20 11 36.42 25.1r 11JA32 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 -0.05 0.00 0.04
2 0.0000 0.00 -0.02 0.00 0.04
3 0.0001 0.00 0.09 0.00 0.11
4 0.0001 0.00 0.12 0.00 -0.00
5 0.0001 0.00 0.07 0.00 0.18
6 0.0002 0.00 -0.05 0.00 0.06
7 0.0002 0.00 -0.10 0.00 0.06
8 0.0027 0.00 -0.02 0.00 -0.11
9 0.0028 0.00 0.07 0.00 -0.12
10 0.0028 0.00 0.24 0.00 -0.03
11 0.0029 0.00 0.06 0.00 0.04
12 0.0029 0.00 0.04 0.00 0.03
13 0.0029 0.00 0.03 0.00 0.01
14 0.0030 0.00 -0.07 0.00 -0.10
15 0.0684 0.00 -0.05 0.00 -0.25
16 0.0712 0.00 -0.07 0.00 -0.09
17 0.9720 0.00 0.03 0.00 -0.02
18 0.9722 0.00 -0.22 0.00 -0.02
19 0.9723 0.00 -0.22 0.00 -0.01
20 3.1488 0.00 0.03 0.00 0.06
21 3.1490 0.00 0.02 0.00 0.01
22 3.1491 0.00 0.12 0.00 0.10
23 3.1492 0.00 -0.02 0.00 0.17
24 5.0957 0.00 0.03 0.00 -0.05
25 5.0958 0.00 0.16 0.00 0.08
26 6.2176 0.00 -0.03 0.00 -0.08
27 6.2180 0.00 -0.03 0.00 -0.09
28 6.2184 0.00 -0.04 0.00 -0.09
29 6.2204 0.00 -0.02 0.00 0.02
30 6.2207 0.00 -0.02 0.00 0.02
31 6.2210 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.
11JA32 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.445 46.445 46.445 ecceobj 0.135 0.135 0.135 incobj 3.230 3.230 3.230 qmin 39.659 39.702 39.681 qmax 54.025 53.944 53.991 amean 46.655 46.655 46.655 amin 46.250 46.253 46.251 amax 47.113 47.090 47.104 emean 0.134 0.134 0.134 emin 0.121 0.121 0.121 emax 0.147 0.146 0.146 imean 4.760 4.760 4.759 imin 4.293 4.296 4.295 imax 5.212 5.208 5.210 excite_mean 0.157 0.157 0.157 fracstop 1.000 1.000 1.000 cjmean 3.104 3.104 3.104 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 180.9 180.6 180.6 kozaiamp 180.0 180.0 180.0