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: 16QF135 # Created Wed Dec 25 02:10:41 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 8.88y # First observation: 2013/11/05 # Last observation: 2022/09/22 # Chi-squared of fit: 2.65 DOF: 30 RMS: 0.07 # Min/Max residuals: -0.22 0.15 # Exact a, adot, b, bdot, g, gdot: 1.675253E-05 2.979511E-02 7.175388E-06 1.197554E-02 2.781748E-02 -1.878456E-03 # Covariance matrix: 4.5581E-13 -1.5225E-13 6.5250E-14 -4.1418E-14 -8.1089E-14 -3.5885E-13 -1.5225E-13 7.8510E-14 -3.8934E-14 2.4971E-14 2.2928E-16 2.1782E-13 6.5250E-14 -3.8934E-14 2.9888E-13 -6.1948E-14 -2.2332E-14 -1.3088E-13 -4.1418E-14 2.4971E-14 -6.1948E-14 2.0788E-14 1.2106E-14 8.3449E-14 -8.1089E-14 2.2928E-16 -2.2332E-14 1.2106E-14 4.1584E-13 9.2993E-14 -3.5885E-13 2.1782E-13 -1.3088E-13 8.3449E-14 9.2993E-14 7.2513E-13 # lat0 lon0 xBary yBary zBary JD0 -17.407375 12.216336 -0.498407 -0.255938 -0.816737 2456601.516448 # Heliocentric elements and errors Epoch: 2456602.5000 = 2013/11/06 Mean Anomaly: 352.38473 +/- 0.005 Argument of Peri: 333.94021 +/- 0.009 Long of Asc Node: 48.77793 +/- 0.000 Inclination: 27.63514 +/- 0.000 Eccentricity: 0.24883127 +/- 0.0001 Semi-Major Axis: 48.69857236 +/- 0.0068 Time of Perihelion: 2459228.2649 +/- 25.4 Perihelion: 36.58084479 +/- 0.0066 Aphelion: 60.81629992 +/- 0.0094 Period (y) 339.8463 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.25584867 +/- 0.0008 Ecliptic Y 7.92970122 +/- 0.0002 Ecliptic Z -10.75430991 +/- 0.0002 Ecliptic XDOT -0.00045449 +/- 0.0000 Ecliptic YDOT 0.00290170 +/- 0.0000 Ecliptic ZDOT 0.00118013 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.76956192 +/- 0.0007 Geocenter to KBO 35.94869735 +/- 0.0008 # Hcoef: 6.86
The following table shows the complete astrometric record for 16QF135. 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 (16QF135) followed by the observatory code and reference code for the source of the astrometry.
2013 11 05.01567 01 12 16.44 -11 11 44.6 22.9r 16QF135 W84 C~55Zd 2013 11 05.05474 01 12 16.24 -11 11 44.8 16QF135 W84 C~55Zd 2013 11 05.14797 01 12 15.78 -11 11 45.4 16QF135 W84 C~55Zd 2016 08 16.36770 01 33 57.488 -06 39 40.24 22.0i 16QF135 W84 C~55Zd 2016 08 29.34394 01 33 22.821 -06 45 58.00 23.2g 16QF135 W84 C~55Zd 2017 09 25.35779 01 36 42.601 -05 39 28.26 22.2i 16QF135 W84 C~55Zd 2017 09 25.35916 01 36 42.591 -05 39 28.31 22.3r 16QF135 W84 C~55Zd 2017 10 22.24122 01 34 22.145 -05 50 45.73 23.4g 16QF135 W84 C~55Zd 2017 10 30.20292 01 33 39.783 -05 53 06.18 22.7z 16QF135 W84 C~55Zd 2017 11 15.16254 01 32 20.246 -05 55 51.83 22.8r 16QF135 W84 C~55Zd 2017 11 15.16390 01 32 20.222 -05 55 51.75 23.3g 16QF135 W84 C~55Zd 2017 11 23.14423 01 31 45.048 -05 56 08.92 22.4r 16QF135 W84 C~55Zd 2017 11 23.14561 01 31 45.039 -05 56 09.07 23.1g 16QF135 W84 C~55Zd 2018 09 09.39300 01 43 02.997 -04 11 04.78 22.1z 16QF135 W84 C~55Zd 2018 10 19.27570 01 39 50.074 -04 29 06.43 22.2z 16QF135 W84 C~55Zd 2022 09 22.509387 02 02 43.631 +01 05 41.05 22.2w 16QF135 F51 C~5oPL 2022 09 22.523468 02 02 43.565 +01 05 40.70 22.2w 16QF135 F51 C~5oPL 2022 09 22.537472 02 02 43.494 +01 05 40.23 22.2w 16QF135 F51 C~5oPL
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 -0.05
2 0.0001 0.00 -0.04 0.00 0.01
3 0.0004 0.00 -0.02 0.00 0.04
4 2.7799 0.00 -0.02 0.00 -0.08
5 2.8154 0.00 0.00 0.00 0.15
6 3.8887 0.00 0.02 0.00 -0.04
7 3.8887 0.00 -0.03 0.00 -0.05
8 3.9623 0.00 0.08 0.00 0.03
9 3.9841 0.00 -0.00 0.00 0.04
10 4.0278 0.00 0.04 0.00 -0.06
11 4.0278 0.00 -0.22 0.00 0.03
12 4.0496 0.00 0.09 0.00 0.09
13 4.0496 0.00 0.04 0.00 -0.07
14 4.8443 0.00 0.05 0.00 0.01
15 4.9535 0.00 0.03 0.00 -0.02
16 8.8802 0.00 0.06 0.00 0.03
17 8.8802 0.00 0.01 0.00 0.04
18 8.8803 0.00 -0.11 0.00 -0.08
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.
16QF135 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 49.050 49.050 49.050 ecceobj 0.254 0.254 0.254 incobj 27.619 27.619 27.619 qmin 35.295 35.310 35.316 qmax 62.627 62.582 62.617 amean 48.684 48.676 48.687 amin 48.236 48.223 48.222 amax 49.232 49.225 49.220 emean 0.254 0.254 0.254 emin 0.237 0.236 0.236 emax 0.273 0.273 0.273 imean 26.555 26.555 26.556 imin 26.006 25.984 25.992 imax 27.048 27.042 27.055 excite_mean 0.514 0.514 0.514 fracstop 1.000 1.000 1.000 cjmean 2.819 2.819 2.819 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 174.8 174.4 174.9 kozaiamp 180.0 180.0 180.0