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: 14SF404 # Created Wed Apr 24 01:16:19 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 3.09y # First observation: 2014/09/30 # Last observation: 2017/11/01 Preliminary a, adot, b, bdot, g, gdot: -0.000100 0.033047 -0.000014 -0.001679 0.028903 0.000000 # Chi-squared of fit: 6.24 DOF: 28 RMS: 0.11 # Min/Max residuals: -0.19 0.22 # Exact a, adot, b, bdot, g, gdot: 1.759849E-05 3.296822E-02 -1.829496E-07 -1.668178E-03 2.909296E-02 3.217357E-05 # Covariance matrix: 8.0521E-13 -7.6885E-13 -4.1852E-14 3.6989E-14 1.2887E-13 -5.2241E-12 -7.6885E-13 1.1198E-12 2.2367E-14 -4.6674E-14 1.7536E-13 9.3358E-12 -4.1852E-14 2.2367E-14 3.7943E-13 -1.7129E-13 -7.7818E-14 1.0634E-13 3.6989E-14 -4.6674E-14 -1.7129E-13 1.0195E-13 1.8976E-14 -3.9429E-13 1.2887E-13 1.7536E-13 -7.7818E-14 1.8976E-14 6.9170E-13 2.3987E-12 -5.2241E-12 9.3358E-12 1.0634E-13 -3.9429E-13 2.3987E-12 8.6314E-11 # lat0 lon0 xBary yBary zBary JD0 -29.698900 13.633211 0.121077 -0.493579 -0.865702 2456930.740028 # Heliocentric elements and errors Epoch: 2456930.5000 = 2014/09/30 Mean Anomaly: 358.45765 +/- 0.093 Argument of Peri: 266.58062 +/- 0.127 Long of Asc Node: 109.71458 +/- 0.001 Inclination: 29.04483 +/- 0.000 Eccentricity: 0.14691747 +/- 0.0001 Semi-Major Axis: 41.30555440 +/- 0.0062 Time of Perihelion: 2457345.9240 +/- 25.0 Perihelion: 35.23704683 +/- 0.0069 Aphelion: 47.37406197 +/- 0.0084 Period (y) 265.4733 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 30.01057874 +/- 0.0008 Ecliptic Y 7.15668102 +/- 0.0002 Ecliptic Z -17.02965663 +/- 0.0005 Ecliptic XDOT -0.00080893 +/- 0.0000 Ecliptic YDOT 0.00299278 +/- 0.0000 Ecliptic ZDOT -0.00013775 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.24006419 +/- 0.0007 Geocenter to KBO 34.37257438 +/- 0.0010 # Hcoef: 8.02
The following table shows the complete astrometric record for 14SF404. 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 (14SF404) followed by the observatory code and reference code for the source of the astrometry.
2014 09 30.23925 01 38 02.900 -21 54 28.70 24.0g 14SF404 W84 C~55S9 2014 12 26.13333 01 31 38.351 -21 52 03.35 23.2r 14SF404 W84 C~55S9 2015 08 24.37737 01 48 02.264 -20 41 03.76 23.7r 14SF404 W84 C~55S9 2015 10 07.23614 01 44 58.661 -21 16 21.62 23.6r 14SF404 W84 C~55S9 2015 10 22.24717 01 43 34.192 -21 23 51.80 22.8i 14SF404 W84 C~55S9 2015 11 06.13151 01 42 10.870 -21 27 42.86 24.5g 14SF404 W84 C~55S9 2015 11 07.16408 01 42 05.261 -21 27 50.57 22.9z 14SF404 W84 C~55S9 2015 11 15.21747 01 41 23.217 -21 28 07.75 23.5r 14SF404 W84 C~55S9 2016 10 02.26103 01 52 48.744 -20 30 01.17 23.4r 14SF404 W84 C~55S9 2016 10 02.26243 01 52 48.733 -20 30 01.23 24.2g 14SF404 W84 C~55S9 2016 10 05.25001 01 52 32.906 -20 31 58.40 23.6r 14SF404 W84 C~55S9 2016 10 05.25140 01 52 32.888 -20 31 58.38 23.3g 14SF404 W84 C~55S9 2016 10 05.26160 01 52 32.831 -20 31 58.82 23.2i 14SF404 W84 C~55S9 2017 09 18.37609 02 01 18.561 -19 34 34.58 24.6g 14SF404 W84 C~55S9 2017 09 26.27816 02 00 42.473 -19 40 44.29 23.5r 14SF404 W84 C~55S9 2017 09 26.27954 02 00 42.453 -19 40 44.19 23.6i 14SF404 W84 C~55S9 2017 11 01.07755 01 57 27.304 -19 59 28.75 22.7z 14SF404 W84 C~55S9
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 0.07 0.00 -0.15
2 0.2379 -4818.45 0.02 2337.70 0.03
3 0.8984 9460.33 -0.09 438.98 -0.05
4 1.0185 6224.31 0.09 -371.95 -0.01
5 1.0596 4963.81 -0.16 -276.78 0.01
6 1.1003 3811.56 0.22 6.96 0.07
7 1.1031 3737.31 -0.17 33.07 -0.09
8 1.1252 3197.83 -0.12 265.24 0.20
9 2.0069 13383.59 -0.03 -713.41 -0.03
10 2.0069 13383.43 -0.07 -713.39 -0.01
11 2.0151 13131.19 0.18 -721.45 -0.01
12 2.0151 13130.97 0.08 -721.32 0.12
13 2.0151 13130.05 0.05 -721.37 0.08
14 2.9682 21355.10 -0.03 -919.86 -0.19
15 2.9898 20727.10 0.01 -1021.86 -0.03
16 2.9898 20726.89 -0.09 -1021.64 0.20
17 3.0879 17734.94 0.05 -797.91 -0.12
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.
14SF404 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.681 41.702 41.660 ecceobj 0.155 0.155 0.154 incobj 29.046 29.046 29.046 qmin 34.764 34.873 34.823 qmax 48.285 48.327 48.354 amean 41.386 41.450 41.406 amin 41.039 41.111 41.055 amax 41.766 41.833 41.784 emean 0.139 0.138 0.139 emin 0.121 0.121 0.121 emax 0.157 0.157 0.157 imean 27.558 27.590 27.563 imin 27.065 27.140 27.074 imax 28.034 28.023 28.004 excite_mean 0.483 0.483 0.483 fracstop 1.000 1.000 1.000 cjmean 2.786 2.786 2.786 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 183.9 186.6 184.3 kozaiamp 180.0 180.0 180.0