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: 11UW411
# Created Tue Apr 1 01:09:19 2025
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 20
# Arc: 1.43y
# First observation: 2011/08/29
# Last observation: 2013/02/03
Preliminary a, adot, b, bdot, g, gdot:
-0.000110 0.024268 0.000004 0.001840 0.024348 0.000000
# Chi-squared of fit: 8.91 DOF: 34 RMS: 0.12
# Min/Max residuals: -0.28 0.22
# Exact a, adot, b, bdot, g, gdot:
1.621029E-05 2.412579E-02 1.442390E-06 1.840204E-03 2.439905E-02 -3.353498E-03
# Covariance matrix:
3.4092E-13 1.0478E-13 -7.0942E-15 4.6431E-14 3.9879E-13 1.8768E-11
1.0478E-13 7.1058E-13 -1.1840E-14 8.0493E-14 5.7092E-13 3.2848E-11
-7.0942E-15 -1.1840E-14 1.4994E-13 -1.5412E-13 -1.6060E-14 -9.6610E-13
4.6431E-14 8.0493E-14 -1.5412E-13 3.1670E-13 1.0675E-13 6.6712E-12
3.9879E-13 5.7092E-13 -1.6060E-14 1.0675E-13 8.5101E-13 4.3322E-11
1.8768E-11 3.2848E-11 -9.6610E-13 6.6712E-12 4.3322E-11 2.7327E-09
# lat0 lon0 xBary yBary zBary JD0
1.107006 33.595481 0.854661 0.010253 -0.532370 2455802.986416
# Heliocentric elements and errors
Epoch: 2455800.5000 = 2011/08/27
Mean Anomaly: 299.63466 +/- 0.071
Argument of Peri: 92.65918 +/- 0.166
Long of Asc Node: 18.45625 +/- 0.004
Inclination: 4.52059 +/- 0.001
Eccentricity: 0.16768272 +/- 0.0022
Semi-Major Axis: 44.14044646 +/- 0.0332
Time of Perihelion: 2473761.8375 +/- 6.1
Perihelion: 36.73885627 +/- 0.1003
Aphelion: 51.54203666 +/- 0.1040
Period (y) 293.2671 +/- 0.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 35.05263182 +/- 0.0013
Ecliptic Y 22.25792061 +/- 0.0008
Ecliptic Z 0.79190728 +/- 0.0000
Ecliptic XDOT -0.00181782 +/- 0.0000
Ecliptic YDOT 0.00205001 +/- 0.0000
Ecliptic ZDOT 0.00019924 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.52985847 +/- 0.0012
Geocenter to KBO 40.98520340 +/- 0.0015
# Hcoef: 8.41
The following table shows the complete astrometric record for 11UW411. 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 (11UW411) followed by the observatory code and reference code for the source of the astrometry.
2011 08 29.48565 02 03 53.744 +13 45 21.00 24.9r 11UW411 568 C~1C6P 2011 08 29.53760 02 03 53.633 +13 45 20.60 24.6r 11UW411 568 C~1C6P 2011 08 29.58466 02 03 53.533 +13 45 20.08 24.7r 11UW411 568 C~1C6P 2011 09 05.52418 02 03 36.475 +13 44 07.62 24.7r 11UW411 568 C~1C6P 2011 10 24.40337 02 00 18.033 +13 28 03.90 11UW411 568 C~1C6P 2011 10 24.44610 02 00 17.817 +13 28 03.02 24.8r 11UW411 568 C~1C6P 2011 10 24.48881 02 00 17.606 +13 28 01.91 24.6r 11UW411 568 C~1C6P 2011 10 26.42314 02 00 08.300 +13 27 14.42 24.6r 11UW411 568 C~1C6P 2011 10 28.30027 01 59 59.297 +13 26 28.05 11UW411 568 C~1C6P 2011 11 24.29629 01 57 57.036 +13 15 47.42 24.8r 11UW411 568 C~1C6P 2011 11 30.34253 01 57 33.572 +13 13 41.74 24.5r 11UW411 568 C~1C6P 2012 01 26.26707 01 56 13.076 +13 05 57.76 24.4r 11UW411 568 C~1C6P 2012 01 27.32416 01 56 14.433 +13 06 04.48 11UW411 568 C~1C6P 2012 08 17.56010 02 09 26.408 +14 20 35.19 24.4r 11UW411 568 C~1C6P 2012 08 22.61568 02 09 19.663 +14 20 14.82 24.4r 11UW411 568 C~1C6P 2012 08 24.51776 02 09 16.537 +14 20 04.02 24.3r 11UW411 568 C~1C6P 2012 10 17.36532 02 06 05.095 +14 05 25.51 24.2r 11UW411 568 C~1C6P 2012 10 20.46016 02 05 50.268 +14 04 11.83 24.6r 11UW411 568 C~1C6P 2013 01 14.35870 02 01 13.872 +13 39 49.04 24.5r 11UW411 568 C~1C6P 2013 02 03.24708 02 01 33.432 +13 41 15.45 24.3r 11UW411 568 C~1C6P
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 -0.12 0.00 -0.05
2 0.0001 -1.66 -0.01 0.18 -0.03
3 0.0003 -3.20 0.04 0.18 -0.16
4 0.0193 -261.55 -0.04 16.89 0.02
5 0.1531 -3310.03 0.12 103.99 -0.04
6 0.1532 -3313.29 0.09 104.25 0.15
7 0.1533 -3316.56 0.04 104.27 0.10
8 0.1586 -3460.41 -0.07 106.48 0.22
9 0.1638 -3599.72 0.06 108.24 0.10
10 0.2377 -5496.45 -0.09 124.27 -0.11
11 0.2542 -5861.65 -0.03 125.28 0.07
12 0.4101 -7126.59 -0.13 99.18 -0.28
13 0.4130 -7105.64 0.15 98.57 -0.16
14 0.9694 5271.66 0.01 351.58 0.00
15 0.9832 5172.42 0.21 365.30 0.09
16 0.9885 5125.97 -0.00 370.38 0.17
17 1.1359 2208.09 -0.20 482.46 0.12
18 1.1444 1980.14 -0.13 486.29 -0.11
19 1.3795 -2302.69 -0.07 485.87 -0.04
20 1.4340 -2005.24 0.18 469.08 -0.07
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.
11UW411 quality flag:1 Type: CLASSICAL SCATNEAR 7:4EEE axisobj 44.235 44.325 44.149 ecceobj 0.167 0.173 0.161 incobj 4.516 4.516 4.516 qmin 36.218 34.610 36.052 qmax 51.877 53.707 51.901 amean 43.846 43.953 43.727 amin 43.437 43.514 43.275 amax 44.299 44.436 44.242 emean 0.150 0.177 0.159 emin 0.127 0.152 0.143 emax 0.172 0.211 0.175 imean 4.535 3.248 3.834 imin 2.797 0.231 2.816 imax 5.993 5.133 4.986 excite_mean 0.170 0.187 0.173 fracstop 1.000 1.000 1.000 cjmean 3.064 3.057 3.062 libcent 0 -180.0 -180.0 179.6 libamp 0 -180.0 -180.0 109.9 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 178.8 176.8 189.2 kozaiamp 180.0 180.0 179.9