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: 16RK82 # Created Sun Dec 22 02:10:46 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 4.02y # First observation: 2014/11/21 # Last observation: 2018/11/28 Preliminary a, adot, b, bdot, g, gdot: -0.000278 0.028318 0.000005 0.000567 0.026707 0.000000 # Chi-squared of fit: 3.54 DOF: 22 RMS: 0.09 # Min/Max residuals: -0.25 0.14 # Exact a, adot, b, bdot, g, gdot: 1.694879E-05 2.779991E-02 1.487360E-07 5.696696E-04 2.641823E-02 -3.297895E-03 # Covariance matrix: 1.1690E-12 -1.0460E-12 1.3693E-14 -1.4269E-14 -2.5342E-13 -7.0016E-12 -1.0460E-12 1.6316E-12 -5.4276E-14 2.7618E-14 -1.7234E-13 1.2874E-11 1.3693E-14 -5.4276E-14 5.7240E-13 -1.9698E-13 4.7795E-14 -4.5847E-13 -1.4269E-14 2.7618E-14 -1.9698E-13 8.2793E-14 -5.3686E-15 2.2991E-13 -2.5342E-13 -1.7234E-13 4.7795E-14 -5.3686E-15 9.2247E-13 -1.5934E-12 -7.0016E-12 1.2874E-11 -4.5847E-13 2.2991E-13 -1.5934E-12 1.0701E-10 # lat0 lon0 xBary yBary zBary JD0 -21.208999 21.258227 -0.597496 -0.284704 -0.734211 2456982.729338 # Heliocentric elements and errors Epoch: 2456980.5000 = 2014/11/19 Mean Anomaly: 318.81658 +/- 0.089 Argument of Peri: 327.38635 +/- 0.134 Long of Asc Node: 107.92766 +/- 0.002 Inclination: 20.83778 +/- 0.000 Eccentricity: 0.14147948 +/- 0.0003 Semi-Major Axis: 42.70192954 +/- 0.0071 Time of Perihelion: 2468640.2590 +/- 24.9 Perihelion: 36.66048268 +/- 0.0130 Aphelion: 48.74337640 +/- 0.0141 Period (y) 279.0483 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.40193372 +/- 0.0012 Ecliptic Y 13.63873568 +/- 0.0005 Ecliptic Z -13.69404796 +/- 0.0005 Ecliptic XDOT -0.00132587 +/- 0.0000 Ecliptic YDOT 0.00257223 +/- 0.0000 Ecliptic ZDOT 0.00017879 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.59055890 +/- 0.0011 Geocenter to KBO 37.85264646 +/- 0.0014 # Hcoef: 7.71
The following table shows the complete astrometric record for 16RK82. 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 (16RK82) followed by the observatory code and reference code for the source of the astrometry.
2014 11 21.22856 01 50 21.658 -11 23 19.37 23.6r 16RK82 W84 C~55Zp 2015 11 07.24827 01 57 25.933 -10 42 59.51 23.2i 16RK82 W84 C~55Zp 2015 11 07.24964 01 57 25.926 -10 42 59.42 23.6r 16RK82 W84 C~55Zp 2016 09 07.29378 02 07 54.627 -09 32 37.33 23.6r 16RK82 W84 C~55Zp 2016 10 28.19810 02 04 12.018 -10 01 04.85 23.4i 16RK82 W84 C~55Zp 2016 10 28.19949 02 04 12.022 -10 01 04.77 24.0r 16RK82 W84 C~55Zp 2017 10 13.30673 02 11 28.255 -09 14 33.21 22.7z 16RK82 W84 C~55Zp 2017 10 16.24533 02 11 13.797 -09 16 01.47 23.8r 16RK82 W84 C~55Zp 2017 10 18.28531 02 11 03.619 -09 17 00.56 22.7i 16RK82 W84 C~55Zp 2017 10 18.28669 02 11 03.610 -09 17 00.63 24.0r 16RK82 W84 C~55Zp 2017 11 01.19081 02 09 53.065 -09 22 38.43 22.9z 16RK82 W84 C~55Zp 2017 11 27.15606 02 07 49.463 -09 27 06.70 23.7i 16RK82 W84 C~55Zp 2018 11 17.15302 02 14 35.417 -08 46 12.27 23.0i 16RK82 W84 C~55Zp 2018 11 28.19097 02 13 45.150 -08 47 05.40 23.5r 16RK82 W84 C~55Zp
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 -0.06 0.00 0.04
2 0.9610 6699.26 0.03 -141.88 -0.07
3 0.9610 6699.20 0.07 -141.76 0.03
4 1.7962 16928.72 0.14 154.92 0.12
5 1.9356 13213.01 -0.10 -135.76 -0.07
6 1.9356 13213.09 0.10 -135.71 -0.03
7 2.8941 20289.27 -0.25 -88.71 -0.19
8 2.9022 20055.54 0.06 -85.65 0.10
9 2.9078 19892.25 -0.05 -80.72 0.02
10 2.9078 19892.10 -0.09 -80.73 0.01
11 2.9458 18789.55 0.01 19.13 0.00
12 3.0169 16988.08 0.00 490.24 0.00
13 3.9888 23544.55 0.12 383.80 0.05
14 4.0191 22830.08 0.03 630.75 0.00
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.
16RK82 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.086 43.108 43.064 ecceobj 0.145 0.145 0.145 incobj 20.842 20.842 20.842 qmin 35.735 35.774 35.716 qmax 50.195 50.158 50.129 amean 42.764 42.799 42.755 amin 42.397 42.454 42.401 amax 43.156 43.197 43.154 emean 0.145 0.145 0.144 emin 0.129 0.129 0.127 emax 0.164 0.162 0.162 imean 19.096 19.092 19.123 imin 18.515 18.483 18.504 imax 19.739 19.741 19.750 excite_mean 0.358 0.358 0.358 fracstop 1.000 1.000 1.000 cjmean 2.934 2.934 2.933 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 173.2 173.1 172.6 kozaiamp 180.0 179.9 180.0