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: 16SB56 # Created Sun Dec 22 02:10:47 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 3.31y # First observation: 2014/08/19 # Last observation: 2017/12/09 Preliminary a, adot, b, bdot, g, gdot: 0.000028 0.022510 -0.000006 -0.003001 0.024077 0.000000 # Chi-squared of fit: 4.35 DOF: 28 RMS: 0.09 # Min/Max residuals: -0.19 0.23 # Exact a, adot, b, bdot, g, gdot: 1.516798E-05 2.226193E-02 -2.069271E-06 -2.957771E-03 2.387239E-02 -3.565157E-04 # Covariance matrix: 4.6116E-13 2.3983E-14 3.5218E-14 -3.6016E-14 3.0290E-13 3.7614E-12 2.3983E-14 1.3363E-12 1.2516E-13 -3.5716E-13 6.5624E-13 3.3684E-11 3.5218E-14 1.2516E-13 2.8569E-13 -1.5714E-13 9.2365E-14 3.3372E-12 -3.6016E-14 -3.5716E-13 -1.5714E-13 1.8192E-13 -1.7934E-13 -9.5826E-12 3.0290E-13 6.5624E-13 9.2365E-14 -1.7934E-13 6.3878E-13 1.7390E-11 3.7614E-12 3.3684E-11 3.3372E-12 -9.5826E-12 1.7390E-11 9.0338E-10 # lat0 lon0 xBary yBary zBary JD0 -15.643831 32.839111 0.932126 -0.108042 -0.386312 2456888.881388 # Heliocentric elements and errors Epoch: 2456880.5000 = 2014/08/11 Mean Anomaly: 219.93048 +/- 0.854 Argument of Peri: 28.06483 +/- 0.852 Long of Asc Node: 149.15577 +/- 0.003 Inclination: 17.37345 +/- 0.000 Eccentricity: 0.06604797 +/- 0.0008 Semi-Major Axis: 40.18366074 +/- 0.0039 Time of Perihelion: 2493080.9372 +/- 220.6 Perihelion: 37.52961151 +/- 0.0325 Aphelion: 42.83770998 +/- 0.0326 Period (y) 254.7314 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.73147272 +/- 0.0011 Ecliptic Y 21.31076787 +/- 0.0007 Ecliptic Z -11.29584249 +/- 0.0004 Ecliptic XDOT -0.00149935 +/- 0.0000 Ecliptic YDOT 0.00206990 +/- 0.0000 Ecliptic ZDOT -0.00031551 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.28498648 +/- 0.0010 Geocenter to KBO 41.88939534 +/- 0.0014 # Hcoef: 7.36
The following table shows the complete astrometric record for 16SB56. 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 (16SB56) followed by the observatory code and reference code for the source of the astrometry.
2014 08 19.38061 02 23 43.755 -02 16 28.44 23.5r 16SB56 W84 C~52Zm 2014 10 01.36775 02 21 55.953 -02 39 22.65 23.6r 16SB56 W84 C~52Zm 2014 10 01.36912 02 21 55.929 -02 39 22.99 23.4i 16SB56 W84 C~52Zm 2014 10 23.30444 02 20 21.786 -02 50 26.02 24.1g 16SB56 W84 C~52Zm 2014 12 16.15719 02 16 41.446 -03 02 31.29 23.8i 16SB56 W84 C~52Zn 2014 12 24.13761 02 16 21.165 -03 01 49.69 23.2r 16SB56 W84 C~52Zn 2016 09 24.28192 02 32 31.589 -02 03 25.72 23.9r 16SB56 W84 C~52Zn 2016 09 27.43969 02 32 20.49 -02 05 09.3 24.3g 16SB56 568 C~2eAH 2016 09 27.51196 02 32 20.23 -02 05 11.7 24.7g 16SB56 568 C~2eAH 2016 09 28.44870 02 32 16.82 -02 05 42.4 24.5g 16SB56 568 C~2eAH 2016 09 28.56839 02 32 16.38 -02 05 46.3 24.4g 16SB56 568 C~2eAH 2016 09 29.46036 02 32 13.10 -02 06 15.4 24.5g 16SB56 568 C~2eAH 2016 09 29.52080 02 32 12.87 -02 06 17.3 24.4g 16SB56 568 C~2eAH 2016 10 27.21403 02 30 14.648 -02 20 00.48 23.0r 16SB56 W84 C~52Zn 2016 10 27.25772 02 30 14.432 -02 20 01.38 22.5i 16SB56 W84 C~52Zn 2016 12 05.18383 02 27 24.236 -02 30 20.82 23.2i 16SB56 W84 C~52Zn 2017 12 09.09111 02 32 15.993 -02 14 23.93 22.2i 16SB56 W84 C~52Zn
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 0.02
2 0.1177 -1982.07 0.23 -755.06 0.15
3 0.1177 -1982.52 -0.13 -755.26 -0.04
4 0.1778 -3533.79 0.01 -909.15 0.03
5 0.3252 -6889.67 0.05 -492.10 -0.04
6 0.3470 -7162.56 -0.08 -351.61 -0.13
7 2.0997 7720.38 0.11 -1915.31 -0.19
8 2.1083 7528.62 -0.03 -1957.00 0.12
9 2.1085 7524.13 0.04 -1957.95 0.06
10 2.1111 7465.60 -0.15 -1969.70 0.03
11 2.1114 7458.07 -0.03 -1971.16 -0.00
12 2.1138 7401.91 0.01 -1982.06 -0.05
13 2.1140 7398.02 0.03 -1982.69 0.01
14 2.1898 5450.54 0.08 -2163.08 -0.10
15 2.1899 5447.19 0.01 -2162.84 0.16
16 2.2965 2835.25 -0.04 -1890.76 -0.03
17 3.3065 7278.62 -0.02 -2457.11 0.01
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.
16SB56 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 40.451 40.461 40.440 ecceobj 0.058 0.058 0.059 incobj 17.337 17.337 17.337 qmin 36.527 36.911 36.507 qmax 44.224 43.787 44.157 amean 40.234 40.249 40.222 amin 39.916 39.931 39.910 amax 40.557 40.571 40.556 emean 0.069 0.067 0.069 emin 0.051 0.054 0.050 emax 0.090 0.080 0.090 imean 16.649 16.648 16.654 imin 15.703 15.715 15.706 imax 17.813 17.756 17.793 excite_mean 0.295 0.294 0.295 fracstop 1.000 1.000 1.000 cjmean 2.959 2.959 2.959 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 180.8 175.5 179.8 kozaiamp 180.0 180.0 179.9