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: 11UW412
# Created Mon Apr 28 01:09:21 2025
# Orbit generated from Bernstein formalism
# Fitting 18 observations of 18
# Arc: 1.42y
# First observation: 2011/09/05
# Last observation: 2013/02/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000218 0.031975 -0.000016 -0.006769 0.026364 0.000000
# Chi-squared of fit: 7.11 DOF: 30 RMS: 0.11
# Min/Max residuals: -0.29 0.23
# Exact a, adot, b, bdot, g, gdot:
1.945986E-05 3.188526E-02 -5.181075E-06 -6.834894E-03 2.648576E-02 5.058793E-03
# Covariance matrix:
1.0395E-12 1.2702E-12 5.1309E-14 -6.1543E-13 1.5925E-12 7.2495E-11
1.2702E-12 3.7436E-12 1.3955E-13 -1.4465E-12 2.9884E-12 1.6852E-10
5.1309E-14 1.3955E-13 1.9506E-13 -2.4829E-13 1.1060E-13 6.8772E-12
-6.1543E-13 -1.4465E-12 -2.4829E-13 9.4488E-13 -1.2625E-12 -7.1440E-11
1.5925E-12 2.9884E-12 1.1060E-13 -1.2625E-12 3.0540E-12 1.4819E-10
7.2495E-11 1.6852E-10 6.8772E-12 -7.1440E-11 1.4819E-10 8.3245E-09
# lat0 lon0 xBary yBary zBary JD0
5.185419 31.548870 0.759925 0.059425 -0.654996 2455810.098236
# Heliocentric elements and errors
Epoch: 2455810.5000 = 2011/09/06
Mean Anomaly: 5.96723 +/- 0.103
Argument of Peri: 134.24912 +/- 0.411
Long of Asc Node: 233.21486 +/- 0.002
Inclination: 12.95475 +/- 0.001
Eccentricity: 0.52888819 +/- 0.0016
Semi-Major Axis: 79.42513142 +/- 0.1906
Time of Perihelion: 2451524.9593 +/- 72.3
Perihelion: 37.41811782 +/- 0.1582
Aphelion: 121.43214503 +/- 0.3192
Period (y) 707.8563 +/- 2.55
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 33.00528294 +/- 0.0021
Ecliptic Y 19.37202277 +/- 0.0013
Ecliptic Z 3.41218094 +/- 0.0002
Ecliptic XDOT -0.00122953 +/- 0.0000
Ecliptic YDOT 0.00312010 +/- 0.0000
Ecliptic ZDOT -0.00065631 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.42221944 +/- 0.0019
Geocenter to KBO 37.75614068 +/- 0.0025
# Hcoef: 8.97
The following table shows the complete astrometric record for 11UW412. 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 (11UW412) followed by the observatory code and reference code for the source of the astrometry.
2011 09 05.59747 01 50 04.156 +16 52 11.03 24.3r 11UW412 568 C~1CKy 2011 10 25.34656 01 46 31.946 +16 32 18.52 25.2r 11UW412 568 C~1CKy 2011 10 25.39635 01 46 31.686 +16 32 17.13 24.8r 11UW412 568 C~1CKy 2011 10 25.40523 01 46 31.661 +16 32 16.83 24.4r 11UW412 568 C~1CKy 2011 10 26.29551 01 46 27.306 +16 31 48.77 24.5r 11UW412 568 C~1CKy 2011 10 26.30517 01 46 27.252 +16 31 48.52 24.7r 11UW412 568 C~1CKy 2011 10 26.34841 01 46 27.034 +16 31 47.04 25.0r 11UW412 568 C~1CKy 2011 10 26.39151 01 46 26.823 +16 31 45.61 24.4r 11UW412 568 C~1CKy 2011 11 24.25792 01 44 16.706 +16 16 31.20 11UW412 568 C~1CKy 2011 11 26.47841 01 44 08.250 +16 15 24.06 25.1r 11UW412 568 C~1CKy 2012 08 17.57288 01 58 23.075 +17 10 50.56 24.7r 11UW412 568 C~1CKy 2012 08 24.53062 01 58 12.696 +17 10 17.90 25.4r 11UW412 568 C~1CKy 2012 10 17.37819 01 54 53.513 +16 52 57.21 24.9r 11UW412 568 C~1CKy 2012 10 20.47322 01 54 38.352 +16 51 25.71 24.1r 11UW412 568 C~1CKy 2012 10 21.33604 01 54 34.136 +16 50 59.92 24.7r 11UW412 568 C~1CKy 2012 10 21.36172 01 54 34.011 +16 50 59.22 24.9r 11UW412 568 C~1CKy 2012 10 21.38781 01 54 33.873 +16 50 58.22 11UW412 568 C~1CKy 2013 02 06.27606 01 51 05.074 +16 15 07.07 24.6r 11UW412 568 C~1CKy
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 0.23
2 0.1362 -3273.90 0.02 -27.93 -0.11
3 0.1363 -3277.89 -0.07 -27.89 0.11
4 0.1364 -3278.33 0.18 -28.04 -0.01
5 0.1388 -3346.87 0.10 -31.79 -0.07
6 0.1388 -3347.68 0.04 -31.74 0.00
7 0.1389 -3351.14 -0.04 -32.00 -0.10
8 0.1391 -3354.49 -0.02 -32.25 -0.19
9 0.2181 -5431.37 0.05 -212.00 0.18
10 0.2242 -5569.25 -0.17 -230.66 -0.04
11 0.9500 7099.05 -0.01 -1450.87 0.09
12 0.9690 6947.98 0.13 -1430.28 -0.29
13 1.1164 3905.35 -0.01 -1416.34 0.14
14 1.1249 3669.39 -0.11 -1426.21 0.06
15 1.1273 3603.65 -0.02 -1429.26 0.05
16 1.1273 3601.72 0.05 -1429.29 0.10
17 1.1274 3599.52 -0.13 -1429.54 -0.07
18 1.4228 32.80 0.10 -2390.10 -0.06
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.
11UW412 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 79.766 80.401 79.169 ecceobj 0.531 0.536 0.526 incobj 12.951 12.951 12.952 qmin 36.367 36.515 36.426 qmax 122.828 124.235 121.206 amean 78.419 78.999 77.674 amin 77.157 77.828 76.528 amax 80.053 80.748 79.226 emean 0.521 0.528 0.516 emin 0.509 0.518 0.503 emax 0.536 0.539 0.530 imean 14.259 13.961 13.955 imin 13.425 13.756 13.174 imax 15.030 14.118 14.849 excite_mean 0.577 0.580 0.570 fracstop 1.000 1.000 1.000 cjmean 3.053 3.051 3.056 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 176.9 237.6 177.4 kozaiamp 179.9 103.0 180.0